╨╧рб▒с>■  xz■   stuvw                                                                                                                                                                                                                                                                                                                                                                                                                                ье┴@ °┐`bjbjюFюF 6VМ,М,ЎW      ИH H H H ─ ─ ─ ╪ ▄5▄5▄5864H6Ь╪ bXЎЁ9Ё9Ё9Ё9:G;G;G;Е@З@З@З@<├@Р SLР уW$XYRк[bX─ G;%;%;"G;G;XH H Ё9:XЛ;Л;Л;G;"H Ё9t 8Ё9Е@Л;G;Е@Л;Л;V╙?@f м a@Ё9ф9 ░7╞CК5┼▄5i;"@BЕ@2X0bXU@ \Л; \a@╪ ╪ H H H H \─ a@$Л;G;G;G;XX╪ ╪ (▄5Л;╪ ╪ ▄5 NORTHERN APPALACHIAN ECOREGION (NAP) & PRIVATE  SAINT LAWRENCE/CHAMPLAIN VALLEY ECOREGION (STCV) KNOWN OR SUSPECTED, EXTIRPATED OR EXTANT LACUSTRINE MACROHABITATS/ALLIANCES Crosswalked to Current and Potential State and National Classifications David Hunt, New York Natural Heritage Program April 26, 2000 (FIRST DRAFT) System: LACUSTRINE. Aquatic Classification Units. Macrohabitat-Alliance Classification with component Microhabitat-Associations. NAC: "MACROHABITAT UNITS" (with corresponding proposed aquatic alliance units) * = Assemblage thought to be essentially restricted to the described macrohabitat. NAC Generalized Macrohabitat Type #1: LACUSTRINE CAVE COMMUNITY Macrohabitat Name: St. Lawrence-Champlain Valley Subterranean Lake (LM1) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: AQUATIC CAVE COMMUNITY =VTHP (89): Subterranean Stream/Pool (in part: pool part) =VT 98: Subterranean areas (VT Lake Macroinvertebrates Type 28) Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: [unknown fish]-[unknown characteristic invertebrates] Non-Vegetated Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: littoral-epilimnion, may extend to sublittoral-hypolimnion. Light regime microhabitats: all subterranean (dark, twilight, entrance). Flow microhabitat: all pool. Water Permanence: permanent (known example) Depth/Surface Area/Morphometry: small, shallow Turnover/Temperature Regime: variable Water/Substrate Acidity/Alkalinity: neutral-basic/hardwater (known example). Trophy/Productivity: mesotrophic-eutrophic (known example) Substrate: bedrock Landscape Setting: with overlying upland areas. Biota: fish reported; no species level information available. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Lake Champlain Fish (LAF6) (only known example) Assemblage Description: (SEE SLCV Summer Stratified Monomictic Lake) Suggested Microhabitat-Association Composition: 1) Dark-Twilight Zone. 2) Entrance Zone. If large examples exist, there may be different pelagic or benthic associations as well as different depth associations within both pelagic and benthic zones. Plant Assemblage: Non-Vegetated Lake (LAP1) Assemblage Description: (See Plant Assemblage Descriptions) * Macroinvertebrate Assemblage: Subterranean Macroinvertebrates (LAM10) unknown species assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). type description. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Uncertain, potential splits could include the following, but only limited examples are known or reported and these may all represent one of the full component of theoretical variants. 1) Trophy variants. 2) Regional variants. Distribution: NY: NAPn, STCVy; VT: NAP., STCV.; ME: NAP? NOTE: A NAP equivalent is not suspected based on expert interviews, at least in NY. ME has "cave pool communities", but NYHP is not sure if these are in NAP or lacustrine in nature (as opposed to riverine) (MEHP 1991). NY Examples: Leads: NYCLIN Valcour Island Sources: Reschke (1990), NYHP Community Leads, VT Aquatic Group (1998), MEHP (1991), VTHP (1989). NAC Generalized Macrohabitat Type #2: INTERMITTENT POND Macrohabitat Name: Northern Appalachian (Acidic) Vernal Pool (LM2) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: VERNAL POOL (in part) NOTES: NYHP currently classifies this "aquatic community" type under the palustrine system, forested subsystem; this placement has been reevaluated as a lacustrine community since about 1995 and continues to be evaluated. =VTHP (96): Vernal Woodland Pool (in part: NAP part) =VT 98: Temporary Palustrine Systems (VT Lake Macroinvertebrates Type 27) =VT 98: Over 1200 feet Vernal Pool (VT Lake Herpetofauna Type 2) =NHHP: Vernal Woodland Pool (?: unsure if in NAP) =NHHP: Vernal Floodplain Pool (?: unsure if in NAP) =MEHP: Vernal Pool Community Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: Eleocharis acicularis-mosquito-aquatic beetle-Ambystoma maculatum Fishless Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. The pelagic zone is so small it usually merges with benthic zone. Water Permanence: Intermittent (semipermanent/temporary), typically vernally flooded but can flood in fall. dry during portions of late summer or fall. VT (1998): water above substrate at least 2 months during springs of average rainfall. Depth/Surface Area/Morphometry: small, shallow (NYHP EOR: to 1m deep), "ponds". Turnover/Temperature Regime: unstratified. Water/Substrate Acidity/Alkalinity: neutral (to acidic/softwater). "pH >4" (VT, 1998). probably low alkalinity. Trophy/Productivity: suspect oligotrophic. Substrate: loamy (to sandy) with abundant leaf litter. Other Features: cold, clear, lightly stained. Landscape Setting: Settings variable, upland forest typical, can be palustrine forest, can also be somewhat open. Includes intermittent oxbows, intermittent swamps. Isolated from other surface waters. VTHP: in perched basins. Biota: With diverse invertebrates and amphibians, hydrophytic plants tolerant of intermittent flooding, but no fish. Breeding habitat for amphibians and invertebrates. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Fishless Lakes (LAF7) (See Fish Assemblage Descriptions) Suggested Microhabitat-Association Composition: All uniform littoral microhabitat. * Plant Assemblage: NAP Vernal Pool Plants (LAP2) NAP Eleocharis acicularis assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: type description. Macroinvertebrate Assemblage: NAP Temporary Palustrine Macroinvertebrates (LAM11) mosquito-caddisfly-aquatic beetle assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) Herpetofauna Assemblage: NAP Vernal Pool Herpetofauna (LAH2) Ambystoma maculatum-Pseudoacris crucifer-Rana sylvatica assemblage Assemblage Description: (See Herpetofauno Assemblage Descriptions) Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Only limited examples are known or reported and these may all represent one of the full component of theoretical variants; uncertain, potential splits could include: 1) Landscape Setting Variants. Terrestrial/upland forest setting vs. floodplain setting. Forest vs. woodland setting (e.g., see NHHP classification). 2) Water/Substrate Acidity/Alkalinity Variants. 3) Regional Variants. 4) Substrate Variants. Distribution: NY: NAPy, STCVn?; VT: NAPn?, STCVy; NH: NAPy?; ME: NAPy? NY Examples: EORs: NYWARR River Road North Creek; Leads: NYLEWI Chase Lake Sandplain, NYWARR Schroon River, NYWARR Oven Mountain Pond, NYHAMI Sacandaga River Wells, NYHAMI Auger Flats, many additional less certain leads. Sources: NYHP BCD Community EORs, Reschke (1990), Hunt (1995-2000) NYHP ANC Community Leads, Sperduto (1992), MEHP (1991), VTHP (1996). NAC Generalized Macrohabitat Type #2: INTERMITTENT POND Macrohabitat Name: St. Lawrence-Champlain Valley (neutral) Vernal Pool (LM3) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: VERNAL POOL (in part) NOTES: NYHP currently classifies this "aquatic community" type under the palustrine system, forested subsystem; this placement has been reevaluated as a lacustrine community since about 1995 and continues to be evaluated. =VTHP (96): Vernal Woodland Pool (in part: SLCV part) =VT 98: Temporary Palustrine Systems (VT Lake Macroinvertebrates Type 27) =VT 98: Under 1200 feet Vernal Pool (VT Herptile Lake Type 1) Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: (unknown characteristic plants)-(unknown characteristic invertebrates)-Ambystoma jeffersonianum Fishless Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. The pelagic zone is so small it usually merges with benthic zone. Water Permanence: Intermittent (semipermanent), typically vernal. VT (1998): water above substrate at least 2 months during springs of average rainfall dry during portions of late summer or fall. Depth/Surface Area/Morphometry: small, shallow, "ponds". Turnover/Temperature Regime: unstratified. Water/Substrate Acidity/Alkalinity: pH >4. neutral to basic/hardwater. Trophy/Productivity: eutrophic? Substrate: loamy (to sandy) to conglomerate. Landscape Setting: Settings variable, terrestrial forest typical, can be palustrine, can be somewhat open. Includes intermittent oxbows, intermittent swamps. Biota: With diverse invertebrates and amphibians, hydrophytic plants tolerant of intermittent flooding, but no fish. Breeding habitat for amphibians and invertebrates. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Fishless Lakes (LAF7) Assemblage Description: (See Fish Assemblage Descriptions) Suggested Microhabitat-Association Composition: All uniform, littoral microhabitat. Plant Assemblage: uncertain; possibly: SLCV Vernal Pool Plants (LAP3) Eleocharis acicularis-Sium suave assemblage? Assemblage Description: Very poor data. unusual bryophytes reported from one potential example. Assemblage suspected similar to SLCV Sinkhole Pond. Macroinvertebrate Assemblage: SLCV Temporary Palustrine Macroinvertebrates (LAM12) [unknown characteristic macroinvertebrates] assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) *? Herpetofauna Assemblage: SLCV Vernal Pool Herpetofauna (LAH1) Ambystoma (maculatum, jeffersonianum, A. laterale)-Rana sylvatica-Hemidactylium scutatum Assemblage Description: (See Herpetofauno Assemblage Descriptions) Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Only limited examples are known or reported and these may all represent one of the full component of theoretical variants; uncertain, potential splits could include: 1) Trophy/Alkalinity Variants. 2) Substrate Variants. 3) Regional Variants. Distribution: NY: NAPn?, STCVy?; VT: NAP., STCV. NY Examples: Leads: NYSTLA Fullerville Sands?, NYCLIN Altona Flat Rock?. Sources: Reschke (1990), Hunt (1995-2000) NYHP ANC Community Leads, VTHP (1996). NAC Generalized Macrohabitat Type #2: INTERMITTENT POND Macrohabitat Name: Northern Appalachian (GL/LNE) Pine Barrens Vernal Pond (LM4) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: PINE BARRENS VERNAL POND (aquatic part) NOTES: NYHP has both aquatic and non-aquatic (emergent) portions lumped into a "landscape complex" community type and classifies under the palustrine system. =?NHHP: Vernal Woodland Pool? (if in NAP and this landscape setting present) =?MEHP: Vernal Pool Community? (in part: if in NAP and this landscape setting present) =VTHP (96): affinities with Outwash Plain Pondshore ("Outwash Plain Pond"?) (NEED VERIFICATION OF CONCEPT) =VT 98: Temporary Palustrine Systems (VT Lake Macroinvertebrates Type 27) Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: Potamogeton sp.-Rana clamitans-(Bufo woodhousii)-water beetle Sparsely-Vegetated Fishless Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. The pelagic zone becomes so small it may merge with benthic zone. Water Permanence: Seasonally fluctuating water levels. Intermittent (semipermanent), typically vernal. EOR: apparently dry during portions of late summer or fall. VTHP (1996): water levels can drop significantly in dry years. Depth/Surface Area/Morphometry: shallow, "ponds". Turnover/Temperature Regime: unstratified. Water/Substrate Acidity/Alkalinity: circumneutral, probably low alkalinity. Trophy/Productivity: probably oligo-mesotrophic. Substrate: coarse, sandy. Other Features: possibly groundwater fed (Reschke, 1990), warm. Landscape Setting: Large outwash sandplains, pine forests typical, glacial kettlehole depressions, open canopy. Biota: Excludes emergent zones (usually characterized by Dulichium arundinaceum), assumed to be covered in terrestrial community crosswalks. Probably characteristic herpetofauna, need to evaluate comparison with more typical vernal pools. No fish known or suspected. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Fishless Lakes (LAF7) Assemblage Description: (See Fish Assemblage Descriptions) Suggested Microhabitat-Association Composition: All uniform littoral microhabitat. Plant Assemblage: NAP Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation (6196) Plant Assemblage: SLCV Eutrophic Water Lily Shallows (LAP5B)? (large enough?) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation (2386) Assemblage Descriptions: (See Individual Plant Assemblage Descriptions) NYHP EOR for this type: sparsely vegetated with Nuphar variegatum (1%), Potamogeton spp. (10%), with submergent Sphagnum cuspidatum. Macroinvertebrate Assemblage: NAP Outwash Plain Temporary Palustrine Macroinvertebrates (LAM13) [unknown characteristic macroinvertebrates] assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) Herpetofauna Assemblage: SLCV Vernal Pool Herpetofauna (LAH1) Ambystoma (maculatum, jeffersonianum, A. laterale)-Rana sylvatica-Hemidactylium scutatum assemblage Assemblage Description: (See Herpetofauno Assemblage Descriptions) Need to develop if different from LAH1. NYHP EOR: Dominated by spring peeper (Pseudacris cruciata), with associated Green frog (Rana clamitans), exotic bullfrog (R. catesbyiana). Could Bufo woodhousii (listed in Reschke, 1990 for this community type and in VT 98 in this assemblage type) be in NAP/SLCV examples of this lake type? Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Only limited examples are known or reported and these may all represent one of the full component of theoretical variants; uncertain, potential splits could include: 1) Regional Variants. Distribution: NY: NAPyp?, STCV?; VT: NAP?, STCV? (GL, LNE type peripheral in NAP?); ME: NAP?; NH: NAP? VTHP (1996) suggests rare in VT. NY Examples: EOR: NYLEWI Chase Lake Sandplain. Sources: NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), VTHP (1996). NAC Generalized Macrohabitat Type #2: INTERMITTENT POND Macrohabitat Name: St. Lawrence-Champlain Valley Sinkhole Pond (LM5) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: SINKHOLE WETLAND (aquatic part) NOTES: NYHP has both aquatic and non-aquatic (emergent) portions lumped into a "landscape complex" community type and classifies under the palustrine system. =VTHP (96): Vernal Woodland Pool? (in part: if in SLCV and corresponding to this state type) =VT 98: Temporary Palustrine Systems (VT Lake Macroinvertebrates Type 27)? Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: Eleocharis acicularis-Sium suave-(unknown characteristic invertebrates)-(unknown characteristic herptile) Fishless Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. The pelagic zone becomes so small it may merge with benthic zone. Water Permanence: Possibly intermittent (semipermanent), possibly vernal. Water levels thought to fluctuate dramatically with rainfall. Poorly drained (Reschke, 1990) Depth/Surface Area/Morphometry: small, very shallow (EOR: to 15 cm), "ponds". Turnover/Temperature Regime: unstratified. Water/Substrate Acidity/Alkalinity: basic. high alkalinity?/hardwater. Trophy/Productivity: eutrophic. Substrate: deep gleyed clay (EOR); dark muck (Reschke, 1990). Landscape Setting: Ideally karst topography. Bedrock types in NY include marble, leucogranitic gneiss bedrock, Theresa dolostone, Potsdam sandstone. Biota: Excludes emergent zones, assumed to be covered in terrestrial community crosswalks. There are probably characteristic herpetofauna; need to evaluate comparison with more typical vernal pools. NYHP EOR: breeding frogs. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Fishless Lakes (LAF7) Assemblage Description: (See Fish Assemblage Descriptions) Suggested Microhabitat-Association Composition: All uniform littoral microhabitat. Plant Assemblage: SLCV Vernal Pool Plants (LAP3) Eleocharis acicularis-Sium suave assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP: type description. Macroinvertebrate Assemblage: SLCV Temporary Palustrine Macroinvertebrates (LAM12) [unknown characteristic macroinvertebrates] assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) NYHP: poor data; suspected to differ from (loamy) vernal pool and pine barrens vernal pond assemblages, need more data and evaluation. NYHP EOR: diverse assemblage of breeding (adult) damselflies, but in pond shore zone. Herpetofauna Assemblage: SLCV Vernal Pool Herpetofauna (LAH1) ? Ambystoma (maculatum, jeffersonianum, A. laterale)-Rana sylvatica-Hemidactylium scutatum assemblage Assemblage Description: (See Herpetofauno Assemblage Descriptions for LAH1) Need to develop new assemblage if different. NYHP EOR: Green frog, leopard frog. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Only limited examples are known or reported and these may all represent one of the full component of theoretical variants; uncertain, potential splits could include: 1) Regional Variants. Need to evaluate Saint Lawrence River Valley vs. Champlain Valley examples. Distribution: NY: NAPn?, STCVy; VT: NAP., STCV. Probably some chance that the basic sinkhole pond lake type could be in NAP (non-aquatic sinkholes have been seen in NY NAP; some apparent sinkholes are seen on aerial photos at the periphery of NAP). NAP examples could be different but no known examples. No equivalent NAP type is yet designated; NAP sinkholes need more field observations for evaluation. NY Examples: EOR: NYSTLA Spile Bridge Road Wetlands, NYJEFF Johnny Cake Road Sinkhole Wetlands. Leads: NYSTLA Chippewa Creek Plains, NYSTLA Beaver Creek Macomb, NYSTLA Beaver Creek Dekalb, NYSTLA Bostwick Creek, NYSTLA Indian Creek, NYCLIN Chazy Barrens?. Sources: NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990). NAC Generalized Macrohabitat Type #4: DYSTROPHIC LAKE Macrohabitat Name: Northern Appalachian Bog Lake (LM6) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: BOG LAKE (in part) =VTHP (89): Tannic Water Lake/Pond =VT 98: Dystrophic Lake (Lake Macrophyte Type 1) =VT 98: Dystrophic Lake (Lake Macroinvertebrate Types 1-5) =VT 98: Dystrophic/High Elevation Lake (Lake Fish Type 1) =MEHP: Bog Pond Community (ME Lake Type 3) =NHHP: Acidic Brownwater Lake/Pond =NY FWI: "Clearwater Acid Lakes" =Widoff: Softwater, Strongly Colored, variously stratified (Unstratified and ?Stratified) Lakes/Ponds Great Lakes Basin 2000: ?Adirondack Headwater Lakes and Lake Outlets (Lake Type L6) Suggested Alliance Name: brown bullhead-Nymphaea odorata-Zalutschia-Hyallela azteca Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: littoral, may extend into sublittoral (and reportedly profundal zone in some occurrences). Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: relatively shallow (less than 30 feet deep), relatively small. Turnover/Temperature Regime: Winter stratified monomictic to dimictic. "unstratified monomictic" per MEHP, but probably implying unstratified in summer, not in winter. Water/Substrate Acidity/Alkalinity: acidic/softwater (e.g., EOR: pH 4.3), low alkalinity, ANC 2.0-7.0 Trophy/Productivity: Dystrophic (dark brown to tan color ("stained") >30 pt-co from tannic and humic acids (VT, 1998)) low productivity, low light penetration. Substrate: substrate thick organic muck with abundant peaty detritus, undefined bottom. Other Features: clear. warm. low conductivity. Landscape Setting: Typically associated with kettlehole and domed peatlands (e.g., "bogs"), typically acidic and typically on glacial outwash. Biota: Low species richness (MEHP, 1991). NYHP: fish absent or low diversity; hooded mergansers, ring-neck duck, beaver reported in pelagic zone. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. *? Fish Assemblage: Dystrophic/High Elevation Lake Fish (LAF1) Assemblage Description: (See Fish Assemblage Descriptions) Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: Brown bullhead-Nymphaea odorata-Hyallela azteca association. Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association Assemblage Description: (See Plant Assemblage Descriptions) * Macroinvertebrate Assemblage: Dystrophic Benthic Littoral Mud/Sand Macroinvertebrates (LAM8) Hyallela azteca-Musculium assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) 2) Benthic Littoral Rock: Brown bullhead-[algae?]-Ferresia californica association. Macroinvertebrate Assemblage: Dystrophic/Acidic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM6) Ferresia californica-Trebelos-Phaenopsectra assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) Plant Assemblage: uncertain Assemblage Description: Unknown, no data yet, green algae likely. 1 or more of the 4 basic sparsely vegetated rocky associations (LAP 12-15) are possible, especially aquatic pavement (LAP13). 3) Benthic Profundal-Sublittoral: Brown bullhead-Zalutschia Non-Vegetated association. Macroinvertebrate Assemblage: *Dystrophic Benthic Profundal-Sublittoral Macroinvertebrates (LAM1) Zalutschia-Chironomus-Musculium assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) 4) Pelagic: Brown bullhead-Synura-Chaoborus Non-vegetated association. uncertain if unique pelagic macroinvertebrate assemblages or same as in benthic associations. Plant Assemblage: Meromictic? Phytoplankton (LAP17) *? Synura-Asterionella Phytoplankton assemblage Assemblage Description: (See Plant Assemblage Description) NYHP EOR: Phytoplankton at very low concentrations {Asterionella, Ceratium hirundinella}. * Zooplankton Assemblage: NAP Dystrophic Zooplankton assemblage (LAZ1) Keratella-Chaoborus assemblage Assemblage Description: (See Zooplankton Assemblage Description). NYHP EOR: type descriptioin. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Uncertain, potential splits could include: 1) Temperature Regime/Stratification Variants. Dimictic vs. monomictic. 2) Substrate Variants. Rock versus mud. 3) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAPy, STCVn?; ME: NAPy?, NH: NAPy? NY Examples: EORs: NYHAMI Helldiver Pond, NYFRAN Spring Pond Bog. Leads: very numerous including A ranked examples: NYFRAN Pink Pond, NYFRAN Rolley Pond, NYFRAN Rat Pond, NYFRAN Blue Pond, NYFRAN Little Echo Pond, NYFRAN Rock Pond, NYFRAN Bog Pond, NYHERK Squash Pond, NYHERK Wheeler Pond, NYHAMI Ferd Bog, NYHAMI Long Pond, NYCLIN Mud Pond Black Brook. Sources: NYHP BCD Community EORs, VT Aquatic Group (1998), D.M.Hunt NY-NAP Community Crosswalk July 14, 1999, Hunt (1995-2000) NYHP ANC Community Leads, NYHP BCD Plant EORs, Reschke (1990), Sperduto (1992), MEHP (1991), Widoff (1986), VTHP (1989). NAC Generalized Macrohabitat Type #4: DYSTROPHIC LAKE Macrohabitat Name: St. Lawrence-Champlain Valley Bog Lake (LM7) 4/25 IF EOS ARE IN SLCV, ARE THEY A UNIQUE TYPE OR SIMPLY PERIPHERAL EOS OF THE NAP TYPE??? Synonymy/Affinities/Crosswalk: =NYHP: BOG LAKE (in part) =VTHP (89): Tannic Water Lake/Pond (?: if in ecoregion) =VT 98: Dystrophic Lake (Lake Macrophyte Type 1) (?: if in ecoregion) =VT 98: Dystrophic Lake (Lake Macroinvertebrate Types 1-5) =Widoff: Softwater, Strongly Colored, variously stratified (Unstratified and ?Stratified) Lakes/Ponds Great Lakes Basin 2000: ?apparently no equivalent/not addressed. Suggested Alliance Name: (unknown characteristic fish-plant-macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): (Same as NAP Bog Lake???) Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: at least littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: Turnover/Temperature Regime: Water/Substrate Acidity/Alkalinity: probably acidic/softwater. Trophy/Productivity: Substrate: One NYHP lead, Mud Lake, is described as having peaty bottom and flooded boggy shore. Landscape Setting: peatlands, may be less acidic than NAP. Biota: Same as NAP Bog Lake???. Assume that macroinvertebrates and possibly plants may differ from NAP assemblages, but poor data readily available or analyzed. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Same as NAP Bog Lake???: Dystrophic/High Elevation Lake Fish (LAF1) Suggested Microhabitat-Association Composition: (Same as NAP Bog Lake???) possible Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association Assemblage Description: (See Plant Assemblage Descriptions) One NYHP lead, Mud Lake, NY, is described as having the following plant species: Ceratophyllum, Scirpus subterminalis, Najas, Nuphar, Nymphaea, Hippuris vulgaris, Vallisneria, Eleocharis robbinsii. Could Hippuris be a SLCV indicator species? possible Macroinvertebrate Assemblages: Dystrophic Benthic Littoral Mud/Sand Macroinvertebrates (LAM8) Dystrophic/Acidic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM6) Dystrophic Benthic Profundal-Sublittoral Macroinvertebrates (LAM1) Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Temperature Regime/Stratification Variants. Dimictic vs. monomictic. 2) Substrate Variants. Rock versus mud. 3) Regional Variants. Distribution: NY: NAPn?, STCVy?; VT: NAP., STCV. (CHECK WITH VT EXPERTS FOR PRESENCE IN SLCV) NY Examples: Leads: NYJEFF Mud Lake (Fort Drum Training Area 19). No expert leads available. Strongly suspected at sites such as Lisbon Swamp, Rogers Pond. Sources: Reschke (1990), Hunt (1995-2000) NYHP ANC Community Leads. NAC Generalized Macrohabitat Type #5: MEROMICTIC LAKE Macrohabitat Name: Northern Appalachian Meromictic Lake (LM8) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: MEROMICTIC LAKE (in part) =VTHP (89): uncertain if present in VT, and if so which state type, if any, would correspond. =VT 98: Dystrophic Lake (Lake Macroinvertebrate Types 1-5) (?: if this type present in VT) =VT 98: Dystrophic Lake (Lake Macrophyte Type 1) (?: if this type present in VT) =VT 98: Dystrophic/High Elevation Lake (Lake Fish Type 1) (?: if this type present in VT) =MEHP: Meromictic Lake (Lake Type L7) =NHHP: ?apparently no equivalent/not addressed.? =Widoff: Meromictic Lakes/Ponds (1 or more of various alkalinity and color types) Great Lakes Basin 2000: ?apparently no equivalent/not addressed.? Suggested Alliance Name: brown bullhead-freshwater sponge-Synura-Diaphanasoma brachyurium Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: mostly littoral, may extend into sublittoral (and possibly profundal zone in some EOs). Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: relatively deep (e.g., 40 to 50 feet), small surface area, low surface area/depth ratio. Turnover/Temperature Regime: Water column never completely mixes at any time of the year: with only partial mixing in the mixolimnion above the chemocline but no mixing in the monimolimnion below the chemocline. Basic type is reported by Reschke (1990) to be frequently dicothermic (with minimum temperature in middle stratum), however known NY NAP EOs are not dicothermic. Water/Substrate Acidity/Alkalinity: acidic/softwater, NYHP EOR: pH 5.4. Trophy/Productivity: dystrophic (stained): probably affinities to NAP Bog Lake. Chlorophyll a at 3-6 ug/l. Substrate: abundant woody debris. Other Features: Meromictic (permanently chemically stratified; forming a chemocline), chemocline reflected by zones for Fe, NH4, Ca, SiO2, DIC with high levels of dissolved salts below the chemocline; low flushing rate; anoxic/anaerobic below 7-10 m (0 ppm D.O). Possibly all "biogenically created" in NAP. Low flushing rate. Landscape Setting: variable?. sheltered kettleholes may be typical. Biota:Reportedly biotically depauperate. "Chemically tolerant" species hypothesized for the monimolimnion zone. Low fish abundance allowing for abundant zooplankton populations. Aquatic macrophytes in low abundance. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Dystrophic/High Elevation Lake Fish (LAF1)? Assemblage Description: (See Fish Assemblage Descriptions) 1 NYHP EOR: yellow perch, brown bullhead, white sucker. Stocked fish reportedly often/usually die in this specific macrohabitat type. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: brown bullhead-[unknown characteristic plants]-freshwater sponge sparsely vegetated association. Plant Assemblage: Non-Vegetated Lake (LAP1)? Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). NYHP EOR: apparently this type. * Macroinvertebrate Assemblage: NAP Meromictic? Macroinvertebrates (LAM16) Freshwater Sponge assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). NYHP EOR: type description. 2) Benthic Profundal-Sublittoral: brown bullhead-[unknown characteristic macroinvertebrate] non-vegetated association. 3) Pelagic Epilimnion: brown bullhead-Synura-Diaphanasoma brachyurium sparsely vegetated association. * Plant Assemblage: Meromictic? Phytoplankton (LAP17) Synura-Asterionella Phytoplankton assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: type description. *? Zooplankton Assemblage: NAP Meromictic? Zooplankton (LAZ2) Diaphanasoma brachyurium-Ceriodaphnia assemblage Assemblage Description: (See Zooplankton Assemblage Descriptions). NYHP EOR: type description. 4) Pelagic Hypolimnion: brown bullhead-[unknown characteristic macroinvertebrates] Non-vegetated association. Macroinvertebrate Assemblage: unknown. NYHP survey did not sample. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Probably very few occurrences in NAP. 1 known in NY, 1 known in ME (NAP?). Probably would not be beneficial to split classification to a finer scale. More data is needed across the range. 1) Color Variants. Widoff stratified this lake type in classification by 5 colors. 2) Alkalinity Variants. Widoff stratified this lake type in classification by 5 alkalinity types. 3) Regional Variants? Distribution: NY: NAPy, STCVn?; VT: NAP., STCV; ME: NAPy?; NH: NAP?. Apparently/assume none of this macrohabitat type in STCV. If so, may be a new type. One possible lead (expert report) from Black River watershed may be in SLCV but need specific site location. NY Examples: EORs: NYFRAN Potter Pond. Leads: NYSTLA Crystal Lake (F?). Sources:NYHP BCD Community EORs, D.M.Hunt NY-NAP Community Crosswalk July 14, 1999, Hunt (1995-2000) NYHP ANC Community Leads, MEHP (1991), Widoff (1986), Reschke (1990). NAC Generalized Macrohabitat Type #6: OLIGOTROPHIC (MONOMICTIC) POND LOOKS LIKE ENOUGH CONSENSUS BETWEEN STATES TO SPLIT OFF HIGH ELEVATION TYPE. NEED FORMAL DISCUSSION FOR FINAL DECISION. Macrohabitat Name: Northern Appalachian Oligotrophic Pond (LM9) 4/24 Synonymy/Affinities/Crosswalk: GENERAL TYPE: =NYHP: OLIGOTROPHIC POND (in part) =Widoff: Softwater, Unstratified, (variously 3 to 5 colored) Lakes/Ponds Great Lakes Basin 2000: Adirondack Headwater Lakes and Lake Outlets (Lake Type L6) (most?) MID ELEVATION TYPE: =VTHP (89): Clear, Soft Water Lake/Pond (in part: pond part) =VT 98: Oligotrophic Moderately Alkaline Lake (Lake Macroinvertebrates Types 14, 15) (?: if includes ponds) =VT 98: Oligotrophic Lake (Lake Macrophyte Type 3) (?: if includes ponds) =MEHP: Monomictic Oligotrophic Lake Community (ME Lake Type 5) =NHHP: Clear Softwater Lake/Pond (in part: pond part) HIGH ELEVATION TYPE: =VTHP (89): Soft Water, High Elevation Lake/Pond (="Tarn") =VT 98: High Elevation, Acidic Lake (Lake Macrophyte Type 2) (apparently "tarn" equivalent") =VT 98: High Elevation, Acidic Lake (Lake Fish Type 2) (apparently "tarn" equivalent") =VT 98: Clear Acidic/Oligotrophic Lake (Lake Macroinvertebrate Types 8-10) =MEHP: Tarn Community (ME Lake Type 1) =NHHP: Alpine/Subalpine Pond Suggested Alliance Name: (unknown characteristic fish)-Eriocaulon aquaticum-Notonectidae-Tabellaria Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral, at most only small sublittoral areas; all epilimnion, at most only small hypolimnion areas. The pelagic zone may become so small it merges with the benthic zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: shallow (e.g., generally < 7m), small surface area. Turnover/Temperature Regime: GENERAL TYPE: Winter-stratified monomictic, turnover once a year in spring, generally cold water but some examples are cited as warmwater; unstratified in spring. "Unstratified monomictic" per MEHP, probably implying unstratified in summer, but not in winter. HIGH ELEVATION VARIANT: Frozen for long periods. NYHP Leads: High elevation variant reportedly may approach amictic state (frozen year round). Water/Substrate Acidity/Alkalinity: very to fairly acidic/softwater, ANC 0-5 mg/l (VT 1998). NYHP leads: pH 4.8-5.7 Trophy/Productivity: Oligotrophic, unproductive to low productivity, high transparency (clear water). NYHP leads: 4.6m secchi depth. Substrate: GENERAL TYPE: Bottom rocky to gravelly to sandy with little organic matter to sandy to muddy. HIGH ELEVATION VARIANT: slightly peaty bottom and bare rock (VTHP 89). MID ELEVATION VARIANT: little organic material, bare rock and sand (VTHP 89). Other Features: Landscape Setting: Isolated, variable surrounding communities, typically upland, can be associated with deep emergent marsh (MEHP). Biota: GENERAL CONCEPT: NYHP leads: fish typically depaurate and may be lacking in some occurrences. good vascular plant, insect and zooplankton diversity. Beaver and associated dams are common. HIGH ELEVATION VARIANT: With sparse and scattered algae and vascular plants (MEHP & VTHP), with Utricularia geminiscapa. NY Leads: Utricularia geminiscapa from mid-elevation lakes at 1500-2100 ft; High elevation variant with depauperate vascular plant diversity, sometimes with only Potamogeton confervoides, and Utricularia geminiscapa as a common associate. MID ELEVATION VARIANT: With floating plants at low abundance and few algae (MEHP). See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Oligotrophic Pond Fish (LAF4) Assemblage Description: (See Fish Assemblage Descriptions). GENERAL TYPE: Some examples with no fish. May be difficult to sort out pre-settlement assemblages (with little or no fish) from effects of acid rain (possibly reducing fish diversity and abundance). GL Basin 2000 crosswalks to GL Basin Fish Type IL2 (=warmwater/eutrophic fish: LAF5 or LAF3 of NAP/SLCV assemblage classification): need to resolve discrepancy. HIGH ELEVATION VARIANT: Lake trout (Salvelinus alpinus) cited in MEHP. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: (unknown characteristic fish]-Eriocaulon aquaticum-Notonectidae association. Plant Assemblage: Benthic Littoral Pipewort-Water Lobelia Shoal (LAP7) Eriocaulon aquaticum-Lobelia dortmanna Herbaceous Vegetation Assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP Leads: typical. MID ELEVATION VARIANT: typical with Eriocaulon and Lobelia (VTHP, 89). HIGH ELEVATION VARIANT: Typical with Nymphoides cordata, Utricularia vulgaris, Potamogeton confervoides, Sparganium americanum (VTHP 89). Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation (OR) Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A)? Nymphaea odorata-Brasenia schreberi association Assemblage Description: (See Plant Assemblage Descriptions) NYHP Leads: seem typical with Utricularia purpurea, Potamogeton confervoides, Utricularia geminiscapa, Scirpus subterminalis, Sphagnum spp. Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Potamogeton epihydrus (MEHP). NYHP EORs: Utricularia vulgaris. (Both species also in LAP 5A). This assemblage probably in low abundance in this lake type. Macroinvertebrate Assemblage: NAP Oligotrophic Pond? Macroinvertebrates (LAM17) Notonectidae-Odonata-Sphaeriidae assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). NYHP EOR: type description. probably Macroinvertebrate Assemblage: Clear Acidic/Oligotrophic Benthic Littoral Mud-Sand Macroinvertebrates (LAM9)? Dytiscidae-Corixidae-Notenectidae assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Assume in ponds as well as in lakes. Macroinvertebrate Assemblage: NAP Acidic Odonates (LAM200) Aeshna-Ischnura-Cordulia-Leucorrhinia assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). type description from thesis study. 2) Benthic Littoral Rock: (unknown characteristic fish]-[algae?]-(unknown characteristic macroinvertebrates] association. possible Plant Assemblages: Possibly 1 or more of 4 basic algae-dominated sparsely vegetated rocky assemblages (LAP 12-15), especially Aquatic Pavement (LAP13) and Aquatic Boulder Field (LAP15). No NY information directly analysed yet. possibly Macroinvertebrate Assemblage: Dystrophic/Acidic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM6) Ferresia californica-Trebelos-Phaenopsectra assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Assume in ponds as well as in lakes. possibly Macroinvertebrate Assemblage: Oligotrophic/Mesotrophic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM7) Amnicola-Physidae-Stenonoma assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Assume in ponds as well as in lakes. 3) Pelagic Epilimnion: (unknown characteristic fish]-Tabellaria-Keratella Non-vegetated association. Plant Assemblage: Oligotrophic Pond? Phytoplankton (LAP21) Tabellaria-Asterionella-Keratella assemblage Assemblage Description: (See Plant Assemblage Descriptions) NYHP EOR: type description. Zooplankton Assemblage: NAP Oligotrophic Pond? Zooplankton (LAZ3) Keratella-Nauplii assemblage Assemblage Description: (See Zooplankton Assemblage Descriptions) NYHP EOR: type description. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Elevation Variants. All NAP states except NY (VT, NH, ME) distinguish high elevation and low elevation oligotrophic ponds, the former reportedly above the treeline, possibly restricted to alpine and subalpine areas. NY currently treats both under oligotrophic pond. Need careful review of difference in hydrologic parameters (especially water chemistry) and biota. Data are broken apart above where differences support this split. Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in classification by 5 colors. Most lakes are suspected to fall in the hardly colored to mildly colored range. 3) Alkalinity Variants. Widoff stratified this lake type in classification by 5 alkalinity types. Most lakes are suspected to fall in the softwater to moderately alkaline range. VTHP classification spans two alkalinity (ANC) types for macroinvertebrates. 4) Substrate Variants. 5) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAPy, STCVn HIGH ELEVATION VARIANT: not in SLCV. MID ELEVATION VARIANT: may be in SLCV. NY Examples: MID ELEVATION VARIANT EORs: NYHAMI South Pond Long Lake. Leads: numerous, A- and AB-ranked leads include NYHAMI Constable Pond, NYFRAN Polliwog Pond?, NYHERK Middle Branch Lake, NYSTLA Chaumont Pond, NYFRAN Horseshoe Pond, NYFRAN St. Regis Pond, NYHAMI Charley Pond, NYCLIN Cranberry Pond, NYWARR Wolf Pond, NYESSE Bartlett Pond, NYHAMI Fawn Lake?, NYHERK Hardscrabble Lake, NYESSE Bradley Pond HIGH ELEVATION VARIANT Leads: NYESSE Mount Redfield Pond, NYESSE Lake Tear of the Clouds, NYESSE Scott Pond. Sources: VT Aquatic Working Group (1998), NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, MEHP (1991), Sperduto (1992), Widoff (1986), Roberts et al. (1995), Reschke (1990), K. Frolich (2000), Great Lakes Basin aquatic portfolio summaries (2000). NAC Generalized Macrohabitat Type #6: OLIGOTROPHIC (MONOMICTIC) POND NO SOLID LEADS, COMPARE TO NAP OLIGOTROPHIC POND MID ELEVATION VARIANT (MAY NOT WANT SEPARATE SLCV TYPE) Macrohabitat Name: St. Lawrence-Champlain Valley Oligotrophic Pond (LM10) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: OLIGOTROPHIC POND (in part) =VTHP (89): Clear, Soft Water Lake/Pond (in part: in present in SLCV) =VT 98: Oligotrophic Moderately Alkaline Lakes (Lake Macroinvertebrates Types 14, 15) (?: if includes ponds & in SLCV) =VT 98: Oligotrophic Lake (Lake Macrophyte Type 3) (?: if includes ponds and in SLCV) =Widoff: Softwater, Unstratified, (variously 3 to 5 colored) Lakes/Ponds Great Lakes Basin 2000: St. Lawrence Lake Plain Lakes? (Lake Type L8) (1 of several) Suggested Alliance Name: (unknown characteristic fish-plant-macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Similar to NAP OLIGOTROPHIC POND? Scale: Microhabitat Composition: Depth/Substrate microhabitat: at least littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: Turnover/Temperature Regime: Water/Substrate Acidity/Alkalinity: Trophy/Productivity: Substrate: Other Features: Landscape Setting: Biota: NO SOLID LEADS, COMPARE TO NAP OLIGOTROPHIC POND (MAY NOT BE OR WARRANT SEPARATE SLCV TYPE) See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: NO SOLID LEADS, COMPARE TO NAP OLIGOTROPHIC POND (MAY NOT BE OR WARRANT SEPARATE SLCV TYPE) Suggested Microhabitat-Association Composition: NO SOLID LEADS, COMPARE TO NAP OLIGOTROPHIC POND (MAY NOT BE OR WARRANT SEPARATE SLCV TYPE) Plant Assemblages: unknown. Macroinvertebrate Assemblages: unknown. 1) Benthic Littoral: (unknown characteristic fish-plant-macroinvertebrates) association. 2) Pelagic Epilimnion: (unknown characteristic fish-macroinvertebrates) Non-vegetated association. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Similar to NAP OLIGOTROPHIC POND? Distribution: NY: NAPn?, STCV?; VT: NAP., STCV. NY Examples: No solid leads, but strongly suspected. Sources: Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990). NAC Generalized Macrohabitat Type #11: EUTROPHIC(-MESOTROPHIC) (MONOMICTIC) POND Macrohabitat Name: Northern Appalachian Eutrophic Pond (LM11) 4/24 Synonymy/Affinities/Crosswalk: GENERAL TYPE: =NYHP: EUTROPHIC POND (in part) =Widoff: Alkaline and Moderately Alkaline, Variously Colored, Unstratified Lakes/Ponds =VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes ponds) Great Lakes Basin 2000: ?Adirondack Headwater Lakes and Lake Outlets? (Lake Type L6) (in part) EUTROPHIC TYPE: =VTHP (89): Very Rich Lake/Pond (pond part) =VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes ponds) =NHHP: Highly Alkaline Lake/Pond: (in part: if not marl and if in NAP) =MEHP: Eutrophic Pond (ME Lake Community L2) MESOTROPHIC TYPE: =VTHP (89): Moderately Rich Lake/Pond (pond part) =VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes ponds) =NHHP: Moderately Alkaline Lake/Pond (in part) =MEHP: Monomictic Mesotrophic Lake Community (ME Lake Community L6) Suggested Alliance Name: (unknown characteristic fish)-Potamogeton spp.-(unknown characteristic macroinvertebrates)-Chrysosphaerella longispina Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral, at most only small sublittoral areas; all epilimnion, at most only small hypolimnion areas. The pelagic zone may become so small it merges with the benthic zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: shallow (e.g., < 5 to 7m), small surface area. Turnover/Temperature Regime: winter-stratified monomictic; turnover once per year in spring; unstratified in summer. Water/Substrate Acidity/Alkalinity: GENERAL TYPE: neutral to basic/hardwater, pH 6.7-7.3, ANC high (NYHP leads). EUTROPHIC VARIANT: highly alkaline (MEHP). MESOTROPHIC VARIANT: moderately alkaline (MEHP). Trophy/Productivity: GENERAL TYPE: nutrient rich, summer transparency 3.5-6m secchi depth. EUTROPHIC VARIANT: high productivity (MEHP), naturally eutrophic. MESOTROPHIC VARIANT: moderate productivity (MEHP, VTHP), mesotrophic. Substrate: typically with deep organic sediments/muck. Other Features: GENERAL TYPE: warm water, green. MESOTROPHIC VARIANT: clear to cloudy (MEHP). Landscape Setting: Isolated, variable surrounding communities, typically upland. Typically with associated deep emergent marsh along shoreline. Biota: GENERAL TYPE: High biotic diversity (NYHP EOR: 29 vasc. plants). EUTROPHIC VARIANT: Abundant algae, plankton and vascular plants (NYHP EOR Eu>Meso; MEHP). MESOTROPHIC VARIANT: Submergent and floating vascular plants may be common in moderate numbers (MEHP). See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Eutrophic-Mesotrophic Epilimnion/Pond Fish (LAF5) Assemblage Description: (See Fish Assemblage Descriptions) NYHP Leads: coldwater fish (brook trout); DMH: seems suspicious for this type of pond: stocked?) Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: [unknown characteristic fish]-Potamogeton-Nymphaea-[mi] association. Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation (6196) Assemblage Description: (See Plant Assemblage Descriptions) Expected in eutrophic and mesotrophic variants. May include Ceratophyllum demersum (MEHP; but is this type in NAP in ME?). NYHP EOR: typical. Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation (2386) (apparently best match) OR? Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association Assemblage Description: (See Plant Assemblage Descriptions). Data appears closer to LAP5B than LAP5A. GENERAL: Expected in eutrophic and mesotrophic variants. Includes Nuphar variegatum. Lemna minor abundant, reported to cover much of surface in some EOs (MEHP?, NHHP?, NAP or SLCV?). MESOTROPHIC VARIANT: Brasenia may be more common. NYHP EP EOR mesotrophic vairant: includes Brasenia and Utricularia. Plant Assemblage: Benthic Littoral Pipewort-Water Lobelia Shallow Shoals (LAP7) Eriocaulon aquaticum-Lobelia dortmanna Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions) MESOTROPHIC VARIANT: Expected in relatively low percent of macrohabitat. NYHP EOR (mesotrophic variant?): typical. EUTROPHIC VARIANT: essentially absent. Macroinvertebrate Assemblage: NAP Winter Stratified Monomictic? Macroinvertebrates (LAM19) Isopoda-Amphipoda-Planorbidae assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) NYHP EOR (meso): Leeches, many more species on ALS data sheets (see NYHP leads file during 2nd iteration). Macroinvertebrate Assemblage: NAP Neutral (Alkaline) Odonates (LAM15) Aeshna-Ischnura-Gomphus-Basiaeschna assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). 2) Benthic Littoral Rock: [unknown characteristic fish]-[algae?]-[unknown characteristic macroinvertebrates] association. possible Plant Assemblages: Possibly 1 or more of 4 basic algae-dominated sparsely vegetated rocky assemblages (LAP 12-15), especially Aquatic Pavement (LAP13) and Aquatic Boulder Field (LAP15). possibly Macroinvertebrate Assemblage: Oligotrophic/Mesotrophic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM7) Amnicola-Physidae-Stenonoma assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Assume VT data for ponds as well as lakes. NYHP has no data on association. 3) Pelagic Epilimnion: [unknown characteristic fish]-Chrysosphaerella longispina-unknown characteristic cyclopoid Non-vegetated association. *? Plant Assemblage: Eutrophic Pond? Phytoplankton (LAP16) Chrysosphaerella longispina-Ceratium Phytoplankton assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP EP (meso) EOR: typical. Zooplankton Assemblage: Oligotrophic-Mesotrophic Lake? Zooplankton (LAZ6) Keratella-Polyarthra-Bosmina-Daphnia assemblage Assemblage Descriptions: (See Zooplankton Assemblage Descriptions). NYHP EP EOR (meso): dominated by Cyclopoids and Nauplii, with Rotifers {Keratella, Polyarthra}, Cladocera {Bosmina, Daphnia, Diaphanasoma}. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Trophy/Productivity +/- Acidity/Alkalinity Variants. All NAP states except NY (VT, ME and NH) apparently distinguish mesotrophic versus eutrophic ponds, here tentatively lumped together based on apparently similar biota. NY does not currently recognize this split for ponds, but does for lakes. In general, the Oligo-Meso-Eu trophic split needs to be more critically evaluated with correlations in biota (association) differences for both ponds and lakes. Possibilities include a 2 or 3 parted split. Continual gradients from oligotrophic to eutrophic and acidic to alkaline lakes are suspected. There appears to be characteristic oligotrophic associations and eutrophic associations, with mesotrophic lakes supporting a mixed mosaic of the two types. Could this be analogous to the conifer-mixed-deciduous split in matrix forest classification? Could the 2 or 3 unit classification be considered arbitrary? Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in her classification by 5 colors. These may correlate closely with alkalinity and trophy gradients. 3) Substrate Variants. 4) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAP., STCV. NY Examples: EORs (not yet separated by trophy variants): NYESSE Deer Pond Newcomb. Leads. NYHERK Windfall Pond, NYWARR Sullivan Pond, NYLEWI Stony Lake, NYHAMI Willis Lake, NYFRAN Slush Pond, NYFRAN Black Pond, NYFRAN Cooler Pond, NYHAMI Mud Pond Arietta. Sources: NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, MEHP (1991), Sperduto (1992), Widoff (1986), Reschke (1990), K. Frolich (2000). NAC Generalized Macrohabitat Type #11: EUTROPHIC(-MESOTROPHIC) (MONOMICTIC) POND Macrohabitat Name: St. Lawrence-Champlain Valley Eutrophic Pond (LM12) 4/24 Synonymy/Affinities/Crosswalk: GENERAL TYPE: =NYHP: EUTROPHIC POND (in part) =Widoff: Alkaline and Moderately Alkaline, Variously Colored, Unstratified Lakes/Ponds =VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes ponds) Great Lakes Basin 2000: St. Lawrence Lake Plain Lakes? (Lake Type L8) (1 of several) EUTROPHIC TYPE: =VTHP (89): Very Rich Lake/Pond (pond part; assume in SLCV) =VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes ponds) MESOTROPHIC TYPE: =VTHP (89): Moderately Rich Lake/Pond (pond part; assume in SLCV) =VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes ponds) Suggested Alliance Name: (unknown characteristic fish-plant-macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral, at most only small sublittoral areas; all epilimnion, at most only small hypolimnion areas. The pelagic zone may become so small it merges with the benthic zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: shallow, small surface area. Turnover/Temperature Regime: winter-stratified monomictic. Water/Substrate Acidity/Alkalinity: alkaline/hardwater? Trophy/Productivity: eutrophic, Substrate: typically with organic sediments/muck. Other Features: Landscape Setting: Isolated, variable surrounding communities, typically upland. Typically associated with deep emergent marsh along shoreline. Beaver-created ponds in basins with flooded dead trees may be included here or even typical for this ecoregion. Biota: Poor data readily available for NY SLCV. NEED COMPARISON TO NAP EUTROPHIC POND. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: SAME AS NAP EUTROPHIC POND? Eutrophic-Mesotrophic Epilimnion/Pond Fish (LAF5)? Suggested Microhabitat-Association Composition: NEED COMPARISON TO NAP EUTROPHIC POND Plant Assemblages: NEED COMPARISON TO NAP EUTROPHIC POND Assemblage Description: Macroinvertebrate Assemblages: NEED COMPARISON TO NAP EUTROPHIC POND Assemblage Description: 1) Benthic Littoral Mud/Sand: [fish]-[plant]-[mi] association. 2) Benthic Littoral Rock: [fish]-[plant]-[mi] association. 3) Pelagic Epilimnion: [fish]-[mi] Non-vegetated association. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Trophy/Productivity +/- Acidity/Alkalinity Variants. VT apparently distinguish mesotrophic versus eutrophic ponds, here tentatively lumped together based on apparently similar biota. NY does not currently recognize this split for ponds, but does for lakes. In general, the Oligo-Meso-Eu trophic split needs to be more critically evaluated with correlations in biota (association) differences for both ponds and lakes. Possibilities include a 2 or 3 parted split. Continual gradients from oligotrophic to eutrophic and acidic to alkaline lakes are suspected. There appears to be characteristic oligotrophic associations and eutrophic associations, with mesotrophic lakes supporting a mixed mosaic of the two types. Could this be analogous to the conifer-mixed-deciduous split in matrix forest classification? Could the 2 or 3 unit classification be considered arbitrary? Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in classification by 5 colors. 3) Substrate Variants. 4) Regional Variants. Distribution: NY: NAPn?, STCVy?; VT: NAP., STCV. NY Examples: Leads: NYESSE Rogers Pond, NYESSE Webb Royce Swamp, NYSTLA Yellow Lake Beaver Flow (riverine?). Sources: Hunt (1995-2000) NYHP ANC Community Leads, Widoff (1986), Reschke (1990). NAC Generalized Macrohabitat Type #11: EUTROPHIC (MONOMICTIC) POND Macrohabitat Name: Marl Pond (LM13) 4/24 ECOREGIONAL SPLITS TO BE DEVELOPED IN GREAT LAKES ECOREGION PLANNING EFFORTS? (NAP vs. GL EOs) Synonymy/Affinities/Crosswalk: =NYHP: MARL POND (in part) Does not include alkaline ponds and lakes with localized areas of marl deposition (e.g., See ODL, EDL). =VTHP (89): Hard Water Lake/Pond (="Marl Pond") =?VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: unsure if includes this lake type) =MEHP: Alkaline Pond (in part?: "marl pond" variant) Need to crosswalk ME's non-marl pond variant. =?NHHP: Highly Alkaline Lake/Pond (?: if with marl and if in NAP) =Widoff: recheck: Highly Alkaline Lakes/Ponds Great Lakes Basin 2000: St. Lawrence Lake Plain Lakes? (Lake Type L8) (1 of several) Suggested Alliance Name: (unknown characteristic fish)-Chara sp.-(unknown characteristic macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: small, shallow. Turnover/Temperature Regime: probably winter-stratified monomictic. "unstratified" per MEHP (1991). Water/Substrate Acidity/Alkalinity: very alkaline/hardwater, CaCO3 >50 ppm. Trophy/Productivity: Suspected to be eutrophic. Cole (1979) cites marl lakes in Laurentian Great Lakes as being oligotrophic with low productivity. Substrate: calcium rich marl deposits typical. Other Features: Landscape Setting: Some occurrences possibly with associated marl fen, others with associated marl pond shore, both NY palustrine community types. Biota: Low vegetative diversity with plants thickly encrusted with calcium carbonate deposits. Cole (1979) cites marl lakes in Laurentian Great Lakes as having scattered littoral periphyton and indicator diatoms and zooplankton including species of calciphilic desmids, Holopedium (cladoceran), and calciphilic species of Brachionus (rotifer). See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: unknown Assemblage Description: Need data from ME for NAP and GL Ecoregion for GL variant. Fish may be lacking (Fish Assemblage: Fishless Lakes-LAF7) Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: (unknown characteristic fish)-Chara sp.-(unknown characteristic macroinvertebrates) association. * Plant Assemblage: Marl Pond Plants (LAP4) Potamogeton filiformis-P. strictifolius-Chara Assemblage Assemblage Description: (See Plant Assemblage Descriptions). Macroinvertebrate Assemblage: unknown Assemblage Description: need data from ME for NAP and GL Ecoregion for GL variant. 2) Pelagic Epilimnion: (unknown characteristic fish)-(unknown characteristic plankton) Non-vegetated association. Most EOs suspected to be too shallow for well developed pelagic zone? Plant Assemblage: unknown; characteristic phytoplankton suspected, unique to lake type (cf. Cole, 1979). Macroinvertebrate Assemblage: unknown; characteristic zooplankton suspected, unique to lake type (cf. Cole, 1979). Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Regional Variants. Undoubtedly different ecoregional variants between NAP and GL. NYHP EORs only from GL ecoregion. If SLCV EOs are present, need careful comparison to known NAP and GL EOs. Distribution: NY: NAPn, STCV?; VT: NAP., STCV.; ME: NAPy? ME EO reported from limestone belt of Aroostook Co. (in NAP?) NY Examples: Leads: NYHERK Deer Pond North Lake?, NYHERK Moose River Recreation Area?, NYSTLA Lisbon Swamp? Conversations with Adirondack experts revealed no solid leads. Best candidates were Deer Pond North Lake (described in 1905 literature as having marl margins, but with marl suspected to have misidentified) and Moose River Recreation Area (which contains several lakes of high alkalinity; Walter Kretser suggested looking at geology maps for calcium carbonate deposits=Hbg? of NY bedrock geology map). Slight possibility that there may be very small occurrences in NY SLCV (dense Chara beds noted in small ponds near Lisbon Swamp). Sources: Reschke (1990), MEHP (1991), Widoff (1986), Sperduto (1992), VTHP (1989), Cole (1979). NAC Generalized Macrohabitat Type #11: EUTROPHIC (MONOMICTIC) POND Macrohabitat Name: Great Lakes Salt Pond (LM14) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: INLAND SALT POND =VT 98: apparently no equivalent =VTHP (89): apparently no equivalent Widoff: apparently no equivalent/not addressed. Great Lakes Basin 2000: apparently no equivalent/not addressed. Suggested Alliance Name: TO BE DEVELOPED IN GREAT LAKES ECOREGION PLANNING EFFORTS. Macrohabitat Description (including parameters for use in ELU analysis): TO BE DEVELOPED IN GL ECOREGION PLANNING EFFORTS. Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: small, shallow. Turnover/Temperature Regime: probably winter-stratified monomictic? Water/Substrate Acidity/Alkalinity: Trophy/Productivity: Substrate: Other Features: Landscape Setting: With associated inland salt marsh. Biota: Unique saline tolerant/adapted biota. TO BE EXPANDED IN GL ECOREGION PLANNING EFFORTS. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. * Fish Assemblage: TO BE DEVELOPED IN GL ECOREGION PLANNING EFFORTS. Assemblage Description: Unique saline tolerant/adapted fish. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: [fish]-Ruppia maritima-[mi] association. * Plant Assemblage: Inland Salt Pond Plants (LAP11) Potamogeton pectinatus-Ruppia maritima assemblage Assemblage Description: (See Plant Assemblage Descriptions). TO BE EXPANDED IN GL ECOREGION PLANNING EFFORTS. Macroinvertebrate Assemblage: unknown. Assemblage Description: TO BE DEVELOPED IN GL ECOREGION PLANNING EFFORTS. Potential Macrohabitat Variants: none suspected, limited occurrences known. Distribution: NY: NAPn, STCVn; VT: NAP., STCV. Included for NAP/SLCV because of very slight possibility of presence in far W part of ecoregion. NY Examples: Carncross Salt Pond (GL Ecoregion) Sources: Reschke (1990). NAC Generalized Macrohabitat Type #8: OXBOW (MONOMICTIC) POND Macrohabitat Name: Northern Appalachian (Acidic) Oxbow Pond (LM15) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: OXBOW LAKE (in part) =?VTHP (89): Clear Soft Water Lake/Pond? (in part: pond part; assuming present in VT, in NAP and this type) =VT 98: Oligotrophic Moderately Alkaline Lake (Lake Macroinvertebrates Types 14, 15) (?: if includes ponds & this type) =VT 98: Oligotrophic Lake (Lake Macrophyte Type 3) (?: if includes ponds and this type) =MEHP: Monomictic Oligotrophic Lake Community? (in part; assuming present in ME, in NAP and this type) =NHHP: Clear Softwater Lake/Pond? (in part: pond part; assuming present in NH, in NAP and this type) =Widoff: Softwater, Unstratified, (variously 3 to 5 colored) Lakes/Ponds Great Lakes Basin 2000: Oxbow Lakes (Lake Type L1) Suggested Alliance Name: (unknown characteristic fish-Nymphaea-Odonata Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: shallow. Turnover/Temperature Regime: winter-stratified monomictic. Water/Substrate Acidity/Alkalinity: acidic/softwater. Trophy/Productivity: NYHP EOR: dystrophic (including stained). Substrate: probably fine texture. Other Features: water stagnant Landscape Setting: Oxbows associated with meandering river macrohabitats. Periodic hydrological exchange with river via flooding during times of high water, replenishing more typical riverine biota. Biota: Major assumption in designating this type as a biological type is that a substantial and stable component of the biota is typically comprised of riverine species. NYHP EORs/ff with poor biotic data. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Oligotrophic Epilimion/Pond Fish (LAF4)??? Assemblage Description: (See Fish Assemblage Descriptions) GL Basin (2000) Crosswalked this lake type to GL Basin Fish Type IL2 (=warmwater/eutrophic fish of NAP/SLCV assemblage LAF5 or LAF3): need to resolve discrepancy. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: (unknown characteristic fish)-Nymphaea-Odonata association. Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association Assemblage Description: (See Plant Assemblage Descriptions) Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation OR? Riverine equivalent of NVC Alliance. Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: Potamogeton spp. Macroinvertebrate Assemblage: Riverine Odonates? (LAM18) unknown Odonate assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions) NYHP EOR: diverse odonate assemblage reported, with no genus or species information. possibly? Macroinvertebrate Assemblage: Clear Acidic/Oligotrophic Benthic Littoral Mud-Sand Macroinvertebrates (LAM9)? Dytiscidae-Corixidae-Notonectidae assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). unsure if in this type. 2) Pelagic Epilimnion: (unknown characteristic fish)-(unknown characteristic plankton) Non-vegetated association. Plant Assemblage: unknown; prominent and potentially characteristic phytoplankton assemblage suspected. Macroinvertebrate Assemblage: unknown; prominent and potentially characteristic zooplankton assemblage suspected. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Geomorphological Variants: Need to evaluate "Levee Pond" vs. typical "Oxbow Pond" split (L. MacLean, 1996 pers. com recommendation). Also need to evaluate split between examples associated with marsh headwater streams (in marshes) vs. unconfined/meandering rivers (in floodplain forests). Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in classification by 5 colors. Most lakes are suspected to fall in the hardly colored to mildly colored range. 3) Trophy Variants. Possibly other examples that are not dystrophic. 4) Substrate Variants. Rock versus mud substrate probable, but intraEO variation suspected to be much greater than interEO variation. Most EOs suspected to have organic substrates, if rocky substrate is substantial, rocky plant (sparsely vegetated algae-dominated) and macroinvertebrate assemblages should be crosswalked to this type. 5) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAP., STCV.; ME: NAP?; NH: NAP? NY Examples: EORs: NYFRAN Raquette River Harrietstown. Leads: NYHERK North Branch Moose River, NYHERK South Branch Moose River, NYHERK Middle Branch Moose River, NYESSE Schroon River Oxbows, NYESSE Schroon River North Hudson, NYESSE Saranac River, NYFRAN Lyon Brook, NY.... St. Regis River, NY.... Oswegatchie River, NY.... Grass River. Sources: NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Widoff (1986), Great Lakes Basin aquatic portfolio summaries (2000). NAC Generalized Macrohabitat Type #8: OXBOW (MONOMICTIC) POND Macrohabitat Name: St. Lawrence-Champlain Valley (neutral) Oxbow Pond (LM16) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: OXBOW LAKE (in part) =?VTHP (89): Very Rich Lake/Pond? (in part: pond part; assuming present in VT, in SLCV and this type) =?VTHP (89): Moderately Rich Lake/Pond? (in part: pond part; assuming present in VT, in SLCV and this type) =VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes ponds and this type) =VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes ponds and this type) =VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes ponds and this type) =Widoff: Unstratified, (variously alkaline), (variously 3 to 5 colored) Lakes/Ponds Great Lakes Basin 2000: ?St. Lawrence Lake Plain Lakes (Lake Type L8) Suggested Alliance Name: (unknown characteristic fish)-Nuphar-(unknown characteristic macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: shallow. Turnover/Temperature Regime: winter-stratified monomictic. Water/Substrate Acidity/Alkalinity: alkaline/hardwater. Trophy/Productivity: eutrophic. Substrate: fine texture? Other Features: Landscape Setting: Oxbows associated with meandering river macrohabitats. Biota:Suspected to have species characteristic of more nutrient rich and alkaline waters relative to NAP examples of this basic macrohabitat type. No species information readily available from this habitat, but some from adjacent sloughs. Suspect that biota are similar between associated SLCV sloughs and SLCV oxbow ponds, perhaps the latter weighted more towards typically lacustrine species. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Eutrophic-Mesotrophic Epilimnion/Pond Fish (LAF5)? Assemblage Description: (See Fish Assemblage Descriptions). no data available from NYHP BCD EORs or field forms. Suggested Microhabitat-Association Composition: SEE NAP Oxbow Pond (little or no readily available information) 1) Benthic Littoral Mud/Sand: (unknown characteristic fish)-Nuphar-(unknown characteristic macroinvertebrate) association. probably Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation probably Plant Assemblage: SLCV Tapegrass-Pondweed Bed (LAP6B) Potamogeton spp.-Ceratophyllum sp.Midwest Herbaceous Vegetation Assemblage Descriptions: (See Plant Assemblage Descriptions). Adjacent SLCV sloughs have Nuphar variegata and rare indicator species Armoracia lacustris, both possible from SLCV oxbow pond. Macroinvertebrate Assemblages: NEED COMPARISON TO NAP EUTROPHIC POND Assemblage Description: 2) Pelagic Epilimnion: (unknown characteristic fish)-(unknown characteristic plankton) Non-vegetated association. Plant Assemblage: unknown; prominent and potentially characteristic phytoplankton assemblage suspected. Macroinvertebrate Assemblage: unknown; prominent and potentially characteristic zooplankton assemblage suspected. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Geomorphological Variants: Need to evaluate "Levee Pond" vs. typical "Oxbow Pond" split. Also need to evaluate split between examples associated with marsh headwater streams (in marshes) vs. unconfined/meandering rivers (in floodplain forests). Uncertain, potential splits could include: 2) Acidicity/Alkalinity Variants. 3) Color Variants. Widoff stratified this lake type in classification by 5 colors. Most lakes are suspected to fall in the hardly colored to mildly colored range. Color is thought to strongly correlate with alkalinity. 4) Trophy Variants. Possibly other examples that are not eutrophic. 5) Substrate Variants. Rock versus mud substrate probable, but intraEO variation suspected to be much greater than interEO variation. Most EOs suspected to have organic substrates, if rocky substrate is substantial, rocky plant (sparsely vegetated algae-dominated) and macroinvertebrate assemblages should be crosswalked to this type. 6) Regional Variants. Distribution: NY: NAPn?, STCVy; VT: NAP., STCV. NY Examples: Leads: NYSTLA Little River Canton, NYCLIN Ausable Delta. Sources: Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Widoff (1986). NAC Generalized Macrohabitat Type #11: FLOW-THROUGH (MONOMICTIC) POND Macrohabitat Name: Northern Appalachian (Acidic) Flow-Through Pond (LM17) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: OLIGOTROPHIC POND (in part) =NYHP: EUTROPHIC POND (in part) In older iteration of state classification, some examples of "beaver pond" would crosswalk here. =?VTHP (89): Clear Soft Water Lake/Pond? (in part: pond part; assuming present in VT, in NAP and this type) =VT 98: Oligotrophic Moderately Alkaline Lake (Lake Macroinvertebrates Types 14, 15) (?: if includes ponds & this type) =VT 98: Oligotrophic Lake (Lake Macrophyte Type 3) (?: if includes ponds and this type) =MEHP: Monomictic Oligotrophic Lake Community? (in part; assuming present in ME, in NAP and this type) =NHHP: Clear Softwater Lake/Pond? (in part: pond part; assuming present in NH, in NAP and this type) =Widoff: Softwater, Unstratified, (variously 3 to 5 colored) Lakes/Ponds May also be similar to some of VT 98 river assemblage types. Great Lakes Basin 2000: ?Adirondack Drainage Lakes (Lake Type L7) Suggested Alliance Name: (unknown characteristic fish-plant-macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool, ecotones with riverine communities may grade into runs. Water Permanence: Permanent. Beaver dam variants are prone to conversion (back) to riverine communities upon disappearance of dam. Depth/Surface Area/Morphometry: small, most are probably shallow. Turnover/Temperature Regime: Concept is winter-stratified monomictic (need data to confirm). Stratification is hypothesized to be affected strongly enough by flow from adjacent river segments so that community may attain deeper depths than other (monomictic) ponds and still remain monomictic while retaining enough lacustrine properties and attaining large enough size not to be deemed simply a pool microhabitat of a river community. Water/Substrate Acidity/Alkalinity: probably acidic/softwater. Trophy/Productivity: probably oligotrophic. Substrate: probably fine texture. Other Features: Of fluvial lake genesis. Hydrology should be so strongly influenced by the associated river as to be of a different character than larger lakes with river inlets and outlets that only have localized hydrologic influence from those rivers (e.g., usually only at the inlets and outlets). Water not stagnant, with relatively high flushing rate. Landscape Setting: Situated along the main channel of a riverine community ("in line lakes") with both connected upstream and downstream river segments. Can be caused either by large beaver impoundments, or natural widenings/deepening in the river. With closely associated riverine communities usually in a marsh or floodplain. Biota:Need to elaborate on distinction between this pond type, oxbow ponds and similar non-fluvial ponds. Are there biota differences other than those expected because of connectivity issues? Riverine species assemblages suggested from general literature. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Oligotrophic Epilimion/Pond Fish (LAF4)??? Assemblage Description: (See Fish Assemblage Descriptions) GL Basin (2000) crosswalked this lake type to GL Basin Fish Type IL1 (=warmwater/eutrophic/deepwater fish of NAP/SLCV assemblage LAF3): may not be the same lake type concept. Suggested Microhabitat-Association Composition: Plant Assemblages: unknown. Macroinvertebrate Assemblages: unknown. 1) Benthic Littoral: (unknown characteristic fish-plant-macroinvertebrates) association. 2) Pelagic Epilimnion: (unknown characteristic fish-macroinvertebrates) Non-vegetated association. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Geomorphological Variants: Need to evaluate split of "Beaver Ponds" vs. hydrologically inherent widening/deepening of a river. Other uncertain, potential splits could include: 2) Trophy Variants. may span oligotrophic to eutrophic range. 3) Substrate Variants. Rock versus mud substrate probable, but intraEO variation suspected to be much greater than interEO variation. Most EOs suspected to have organic substrates, if rocky substrate is substantial, rocky plant (sparsely vegetated algae-dominated) and macroinvertebrate assemblages should be crosswalked to this type. 4) Regional Variants. Distribution: NY: NAPy, STCVn?; VT: NAP., STCV. NY Examples: Leads: NYHERK Five Ponds Old-Growth. Numerous other leads on NY Gazetteer. Examples observed by NYHP include NYHAMI Fall Lake, NYHAMI Vly Lake. Sources: Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Great Lakes Basin aquatic portfolio summaries (2000). NAC Generalized Macrohabitat Type #11: FLOW-THROUGH (MONOMICTIC) POND Macrohabitat Name: St. Lawrence-Champlain Valley (neutral) Flow-Through Pond (LM18) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: OLIGOTROPHIC POND (in part) =NYHP: EUTROPHIC POND (in part) In older iteration of state classification, some examples of "beaver pond" would crosswalk here. =?VTHP (89): Very Rich Lake/Pond? (in part: pond part; assuming present in VT, in SLCV and this type) =?VTHP (89): Moderately Rich Lake/Pond? (in part: pond part; assuming present in VT, in SLCV and this type) =VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes ponds and this type) =VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes ponds and this type) =VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes ponds and this type) May also be similar to some of VT 98 river assemblage types. =Widoff: (variously alkaline), Unstratified, (variously 3 to 5 colored) Lakes/Ponds Great Lakes Basin 2000: ?St. Lawrence Lake Plain Lakes (Lake Type L8) (1 of several) Suggested Alliance Name: (unknown characteristic fish-plant-macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: small patch Microhabitat Composition: Depth/Substrate microhabitat: all littoral. Light regime microhabitat: all above-ground. Flow microhabitat: all pool, ecotones with riverine communities may grade into runs. Water Permanence: Permanent. Beaver dam variants are prone to conversion (back) to riverine communities upon disappearance of dam. Depth/Surface Area/Morphometry: small, shallow. Turnover/Temperature Regime: Concept is winter-stratified monomictic (need data to confirm). Stratification is hypothesized to be affected strongly enough by flow from adjacent river segments so that community may attain deeper depths than other (monomictic) ponds and still remain monomictic while retaining enough lacustrine properties and attaining large enough size not to be deemed simply a pool microhabitat of a river community. Water/Substrate Acidity/Alkalinity: probably neutral to basic/hardwater. Trophy/Productivity: probably eutrophic. Substrate: probably fine texture. Other Features: Of fluvial lake genesis. Hydrology should be so strongly influenced by the associated river as to be of a different character than larger lakes with river inlets and outlets that only have localized hydrologic influence from those rivers (e.g., usually only at the inlets and outlets). Water not stagnant. NYHP Leads: high flushing rate. Landscape Setting: Situated along the main channel of a riverine community ("in line lakes") with both connected upstream and downstream river segments. Can be caused either by large beaver impoundments, or natural widenings/deepening in the river. With closely associated riverine communities usually in a marsh or floodplain. Biota: Need to elaborate on distinction between this pond type, oxbow ponds and similar non-fluvial ponds. Are there biota differences other than those expected because of connectivity issues? Riverine species assemblages suggested from general literature. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Eutrophic-Mesotrophic Epilimnion/Pond Fish (LAF5)? Assemblage Description: (See Fish Assemblage Descriptions). no data available on NYHP BCD. Suggested Microhabitat-Association Composition: Plant Assemblages: unknown. Macroinvertebrate Assemblages: unknown. 1) Benthic Littoral: (unknown characteristic fish-plant-macroinvertebrates) association. 2) Pelagic Epilimnion: (unknown characteristic fish-macroinvertebrates) Non-vegetated association. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Uncertain, potential splits could include: 1) Trophy Variants. 2) Substrate Variants. 3) Regional Variants. Distribution: NY: NAPn?, STCVy?; VT: NAP., STCV. NY Examples: Leads: NYSTLA Twin Pond West. Sources: Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990). NAC Generalized Macrohabitat Type #9: WINTERSTRATIFIED MONOMICTIC LAKE Macrohabitat Name: Northern Appalachian WinterStratified Monomictic Lake (LM19) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: WINTERSTRATIFIED MONOMICTIC LAKE (in part) =?VTHP (89): Very Rich Lake/Pond? (in part?; lake part: if present in NAP and this state type) =?VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes this type) =?VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes this type) =?VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes this type) =?MEHP: Monomictic Mesotrophic Lake Community? (Lake Type 6) (in part?: if present in NAP and this state type) =?NHHP: Moderately Alkaline Lake/Pond? (in part?: if present in NAP and this state type) =Widoff: (Alkaline to Moderately Alkaline), Cold? Monomictic, (Slightly to Mildy Colored?) Lake/Pond Great Lakes Basin 2000: ?Adirondack Headwater Lakes and Lake Outlets (Lake Type L6) (1 of several) Suggested Alliance Name: yellow perch-Potamogeton-Dinobryon-Planorbidae Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: large patch Microhabitat Composition: Depth/Substrate microhabitat: mostly littoral, may have limited sublittoral areas. Pelagic zone typically well developed. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: relatively shallow (NYHP EOR: 12 ft avg., 15 ft. max), large surface area/depth ratio. Turnover/Temperature Regime: Typically stratified (inversely) only in winter; winds cause summer mixing, typically deep enough to stratify in summer without wind influence. Water/Substrate Acidity/Alkalinity: neutral, probably alkaline/hardwater, ANC 75-100 mg/l. Trophy/Productivity: eutrophic. Substrate: NYHP EOR: sand and rock. Other Features: NYHP EOR: very lightly stained. Landscape Setting: variable. Biota: loons. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Mesotrophic-Eutrophic Lake Fish (LAF3) Chain pickerel-golden shiner-pumpkinseed-largemouth bass assemblage. Assemblage Description: (See Fish Assemblage Descriptions). NYHP NAP WSML EOR: yellow perch, white sucker, pumpkinseed, brown bullhead. Need evaluation as NAP and/or epilimnion variant of LAF3. GL Basin (2000) crosswalked this lake type to GL Basin Fish Type IL2 (=NAP warmwater/eutrophic fish of NAP/SLCV assemblage LAF3): good match. Suggested Microhabitat-Association Composition: 1) Benthic Littoral (Mud/Sand): yellow perch-Potamogeton-Nuphar-Planorbidae association. Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: estimate 12% of lake surface from ALS data. Species composition seems fairly typical. Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: estimate 2% of lake surface. Nuphar and Brasenia common. LAP5B (SLCV) apparently better match than LAP5A (NAP)? Plant Assemblage: Benthic Littoral Pipewort-Water Lobelia Shoal (LAP7) Eriocaulon aquaticum-Lobelia dortmanna Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: Eriocaulon reported in ALS data, but probably at very low percent of littoral zone relative to other plant assemblages. Macroinvertebrate Assemblage: NAP Winter Stratified Monomictic? Macroinvertebrates (LAM19) Isopoda-Amphipoda-Planorbidae assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). NYHP EOR: type description. Which substrate type?: assume all species associated with mud and/or sand bottom. 2) Pelagic Epilimnion: yellow perch-Dinobryon-Keratella Non-vegetated association. *? Plant Assemblage: Winter-Stratified Epilimnion? Phytoplankton (LAP19) Dinobryon-Ceratium assemblage Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: type description. Zooplankton Assemblage: Oligotrophic-Mesotrophic Lake? Zooplankton (LAZ6) Keratella-Polyarthra-Bosmina-Daphnia assemblage OR? Zooplankton Assemblage: Eutrophic Lake? Zooplankton (LAZ7) Daphnia dubia-Keratella-Diaptomus-Bosmina assemblage Assemblage Description: NYHP EOR: dominated by Cladocera, Rotifera (Keratella), Copepoda, Daphnia spp. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Very limited in number of occurrences, suggest limiting all EOs to one classification unit. Uncertain, potential splits could include: 1) Color Variants. Widoff stratified this lake type in classification by 5 colors. 2) Alkalinity Variants. Widoff stratified this lake type in classification by 5 alkalinity types, but not all these are expected in this type and these are expected to be strongly correlated with color. 3) Substrate Variants. Rock versus mud substrate probable, but intraEO variation suspected to be much greater than interEO variation. Most EOs suspected to have organic substrates, if rocky substrate is substantial, rocky plant (sparsely vegetated algae-dominated) and macroinvertebrate assemblages should be crosswalked to this type. May contain 1 or more of 4 basic algae-dominated sparsely vegetated rocky assemblages (LAP 12-15), especially Aquatic Pavement (LAP13) and Aquatic Boulder Field (LAP15). 4) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAP., STCV. NY Examples: EORs: NYSTLA Horseshoe Lake. Leads: NYFRAN Duck Lake (?), NYCLIN Fern Lake (?). Sources: NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Widoff (1986), Great Lakes Basin aquatic portfolio summaries (2000). NAC Generalized Macrohabitat Type #9: WINTERSTRATIFIED MONOMICTIC LAKE Macrohabitat Name: St. Lawrence-Champlain Valley WinterStratified Monomictic Lake (LM20) 4/24 Synonymy/Affinities/Crosswalk: =NYHP: WINTERSTRATIFIED MONOMICTIC LAKE (in part) =VT 98: apparently no equivalent (???) =VTHP (89): Very Rich Lake/Pond? (in part?; lake part: if in SLCV and same state type) =?VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) (?: if includes this type) =?VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 23-25) (?: if includes this type) =?VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 18-20) (?: if includes this type) =Widoff: (Alkaline to Moderately Alkaline), Cold? Monomictic, (Slightly to Mildy Colored?) Lake/Pond Great Lakes Basin 2000: St. Lawrence Lake Plain Lakes (Lake Type L8) (1 of several, typical?) Suggested Alliance Name: walleye-Ceratophyllum-(unknown characteristic macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: large patch Microhabitat Composition: Depth/Substrate microhabitat: mostly littoral, may have limited sublittoral areas. Pelagic zone typically well developed. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: relatively shallow (EOR: <15 ft), large surface area/depth ratio. Turnover/Temperature Regime: Typically stratified (inversely) only in winter (freezing early); turnover once per year with mixing from complete exposure to winds throughout summer, typically deep enough to stratify in summer without wind influence, thus distinguishing this from eutrophic pond. Water/Substrate Acidity/Alkalinity: probably alkaline/hardwater. Trophy/Productivity: NYHP EOR: eutrophic. (Reschke, 1990 allows mesotrophic) Substrate: variable, includes bedrock?. Other Features: Landscape Setting: variable. Biota: See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: (SLCV?) Eutrophic/Warmwater? Lake Fish (LAF3A) Yellow Perch-Walleye-Muskellunge Assemblage Assemblage Description: (See Fish Assemblage Descriptions). NY references: type description. GL Basin (2000) crosswalked this lake type to GL Basin Fish Type IL2 (=SLCV warmwater/eutrophic fish of NAP/SLCV assemblage LAF3): good match. Suggested Microhabitat-Association Composition: (COMPARE TO NAP WSML for equivalency) Benthic: Armoracia reported, probably rare but good SLCV indicator. 1) Benthic Littoral Mud/Sand: walleye-Ceratophyllum-Nuphar-(unknown characteristic macroinvertebrate) association. Microhabitat Description: deep mud reported. Plant Assemblage: SLCV Tapegrass-Pondweed Bed (LAP6B) Potamogeton spp.-Ceratophyllum sp.Midwest Herbaceous Vegetation (2282) Assemblage Description: (See Plant Assemblage Descriptions). Described as "weed filled areas". NYHP EOR & Schiavone (1984): typical with abundant species: Ceratophyllum, Elodea canadensis, Heteranthera dubia, Najas flexilis, Potamogeton pectinatus, P. perfoliatus, P. pusillus, P. richardsonii, P. zosteriformis, P. nodosus, Vallisneria. Less common species include Potamogeton obtusifolius, P. praelongus, Myriophyllum heterophyllum. Ceratophyllum and Heteranthera dubia and NY state rare Callitriche hermaphroditica and Armoracia aquatica may be good diagnostic species separating from NAP equivalent. Other NYHP lead similar. Plant Assemblage: SLCV Eutrophic Water Lily Shallows (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation (2386) Assemblage Description: (See Plant Assemblage Descriptions). NYHP EOR: abundant species: Nuphar variegata, Nymphaea tuberosa, Spirodella polyrhiza. Less common species: Lemna minor, Lemna trisulca, Utricularia vulgaris. Macroinvertebrate Assemblages: NEED COMPARISON TO NAP EUTROPHIC POND Assemblage Description: Poor NY data readily available. NEED VT EXPERTS TO CORRELATE VT (98) ASSEMBLAGE TYPE TO THIS LAKE TYPE. 2) Benthic Littoral Rock: walleye-[algae?]-(unknown characteristic macroinvertebrate) association. Microhabitat Description: large areas of bedrock and boulders reported from Black Lake in areas of steep rocky shore. Plant Assemblages: sparsely vegetated algae-dominated rocky associations Assemblage Description: No biotia data yet, green algae likely. All 4 basic sparsely vegetated rocky associations (LAP 12-15) are reported or likely, including Aquatic Cliff Community (LAP12), Aquatic Pavement (LAP13), Aquatic Talus (LAP14) and Aquatic Boulder Field (LAP15). Different dominant algae species may vary from ecoregion to ecoregion and across the major physical gradients. 3) Pelagic Epilimnion: walleye-(unknown characteristic plankton) association. Plant Assemblage: unknown Phytoplankton assemblage Assemblage Description: Algae blooms common in summer. prominent and potentially characteristic phytoplankton assemblage suspected. Zooplankton Assemblage: unknown zooplankton assemblage Assemblage Description: prominent and potentially characteristic zooplankton assemblage suspected. Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): Uncertain, potential splits could include: 1) Regional Variants. Distribution: NY: NAPn, STCVy; VT: NAP., STCV. NY Examples: EOR: NYJEFF: Perch Lake. Leads: NYSTLA Black Lake. Other possible sites in the Indian Lake Complex (NYJEFF). Sources: NYHP BCD Community EORs, NYHP BCD Plant EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Widoff (1986), Schiavone (1984), Great Lakes Basin aquatic portfolio summaries (2000). NAC Generalized Macrohabitat Type #10: OLIGOTROPHIC DIMICTIC LAKE Macrohabitat Name: Northern Appalachian Oligotrophic Dimictic Lake (LM21) 4/25 Synonymy/Affinities/Crosswalk: GENERAL TYPE: =NYHP: OLIGOTROPHIC DIMICTIC LAKE (in part) =VTHP (89): Clear, Soft Water Lake/Pond (in part: lake part) =VT 98: Oligotrophic Lake (Macrophyte Type 3) =VT 98: Oligotrophic Lake (VT Fish Lake Type 2) =MEHP: Dimictic Oligotrophic Lake Community (ME Lake Type 8) =NHHP: Clear, Softwater Lake/Pond (in part: lake part) =Widoff: Softwater (to moderately alkaline?), variously colored, Dimictic Lake/Pond Great Lakes Basin 2000: ?Adirondack Headwater Lakes and Lake Outlets (Lake Type L6) (1 of several?) ACIDIC VARIANT: =VT 98: Clear Acidic/Oligotrophic Lake (VT Macroinvertebrate Types 6-10) MODERATELY ALKALINE VARIANT: =VT 98: Oligotrophic Moderately Alkaline Lake (VT Macroinvertebrate Types 11-15) Suggested Alliance Name: Lake trout-Eriocaulon aquaticum-Isoetes lacustris-Notonectidae Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: large patch? Microhabitat Composition: Depth/Substrate microhabitat: all depth and substrate zones; well developed profundal zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: Deep (to greater than 100 feet), MEHP (>12 m). 15-150+ ft deep (NYHP leads). Turnover/Temperature Regime: Dimictic (2 turnovers/year), thermally stratified in both summer and winter (inversely), low water temperature (coldwater), epilimnion volume small relative to hypolimnion volume. Water/Substrate Acidity/Alkalinity: GENERAL TYPE: Neutral to acidic/softwater, ANC moderate (20-50 mg/l). pH 5.2-6.6 (NYHP leads). ACIDIC VARIANT: From VT (1998) LAM2 description: ANC <10, Ca <3, pH <5.5 (is this the "tarn" pond or can it include acidic variants of this lake type?). Examples with anthropogenically altered (increased) acidity are usually deemed degraded and termed "acidified". MODERATELY ALKALINE VARIANT: NYHP Leads: some oligotrophic-alkaline examples (tentatively tracked as EDL). Trophy/Productivity: GENERAL TYPE: Oligotrophic, nutrient poor, P <11 ug/l, VT (1998), low productivity (typical) to unproductive, low Ca, DIC 7-25 g/m2/year, mean summer secchi depth >6.5 m (>4m in Reschke, 1990), high transparency. ACIDIC VARIANT: The more acidic end of the spectrum can apparently grade into stained, tannic water and dystrophic conditions (e.g., some NYHP MDL leads). MODERATELY ALKALINE VARIANT: Some examples, especially larger lakes and the alkaline variant have oligotrophic open water/pelagic and profundal zones with mesotrophic bays/littoral zone. Substrate: Typically with diverse substrate characteristics, bottom with exposed bedrock, cobble, and sand, generally low in accumulated organic matter. Silty substrate is common in portions of larger lakes especially in the alkaline variant and in bays/littoral zone. Other Features: water very clear to bluish-green, high D.O. levels year round throughout water column (VT, MEHP). Landscape Setting: Variable; typically with steep banks. "Boreal" settings. microhabitats can include inlet streams (see sandy delta for corresponding association). Biota: GENERAL TYPE: Littoral zone ranging from "unvegetated" (i.e., without vascular plants) (VT 98) or with sparse aquatic "plants" and algae (MEHP), to moderately densely vegetated with characteristically oligotrophic plants (NY). Vegetation is similar to Oligotrophic Ponds per MEHP. Many examples noted as coldwater fish spawning areas (apparently with lake trout targeted) (NYHP BCD). Loons are common on water surface. Characteristic midges include Tanytarsus rather than Chaoborus, a dystrophic indicator (Reschke, 1990). Zooplankton and Plankton are diverse but at low abundance (Reschke, 1990). Other NYHP leads suggest zooplankton and phytoplankton component can be abundant. Good faunal diversity including good fish diversity and productivity. ACIDIC VARIANT: MODERATELY ALKALINE VARIANT: Examples of the alkaline variant have richer, more diverse zooplankton (NYHP leads). Characteristic littoral algae may include Batrachospermum and Nostoc. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Oligotrophic Lake Fish (LAF2) Lake trout-round whitefish assemblage Assemblage Description: (See Fish Assemblage Descriptions). NYHP EORs & Leads: Typical, including lake trout (Salvelinus namaycush), round whitefish (Prosopium cylindraceum), rainbow smelt, Atlantic salmon and, in Lake George, cisco. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: Largemouth bass-Eriocaulon aquaticum-Isoetes lacustris-Myriophyllum tenellum-Notonectidae association. Fish Assemblage: Mesotrophic-Eutrophic Lake Fish (LAF3) Chain pickerel-golden shiner-pumpkinseed-largemouth bass assemblage. Assemblage Description: (See Fish Assemblage Descriptions). Abundant in Lake George (assume associated with bays) with typical species. Rock bass and fantail darter common especially in sparsely vegetated rocky associations (LAP12-15) and with Johnny darter common on sand. Plant Assemblage: Benthic Littoral Pipewort-Water Lobelia Shoal (LAP7) Eriocaulon aquaticum-Lobelia dortmanna Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Description: including parts extracted from Lake George Report). NYHP EORs: typical and representing large portion of vascular plant-dominated littoral zone. Some examples in SE Adirondacks may have more vascular plant diversity including potential SLCV indicator species. Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Description: including parts extracted from Lake George Report). Limited in area in this macrohabitat, mostly restricted to inlet mouths and nutrient rich portions (e.g., sheltered bays) and more common in moderately alkaline variant. See Lake George Report for detailed description. Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association OR? Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Very limited in area in this macrohabitat, mostly restricted to inlet mouths and nutrient rich portions (e.g., sheltered bays) and more common in moderately alkaline variant. Plant Assemblage: Sand Flats (LAP8) Myriophyllum tenellum-Potamogeton gramineus Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Description: including parts extracted from Lake George Report). Typical *? Plant Assemblage: Quillwort Meadow (LAP9) Isoetes lacustris-Potamogeton robbinsii Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Description: including parts extracted from Lake George Report). Typical. NYHP EOR: type description. Isoetes lacustris potentially rare but very characteristic of lake type. Macroinvertebrate Assemblage: Clear Acidic/Oligotrophic Benthic Littoral Mud-Sand Macroinvertebrates (LAM9) Dytiscidae-Corixidae-Notonectidae assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Typical. Microhabitat Description in VT (1998): mud and sandy areas in littoral zone. in protected coves and bays, often associated with macrophyte beds (may correspond to LAP6A above). Macroinvertebrate Assemblage: Lake Champlain Benthic Littoral Mud Macroinvertebrates (LAM21) Elliptio complanata-Lampsilis radiata assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Abundant in Lake George on silty to sandy bottom. Macroinvertebrate Assemblage: =LAM9? (see above) Assemblage Description: Lake George EOR: dominants include Crustaceans, Diptera, Trichoptera, Gastropoda, Ephemeroptera: where does this crosswalk with VT types? Species data may be available on NYHP EOR or secondary source reports. Macroinvertebrate Assemblage: Acidic Dystrophic/Oligotrophic Benthic Littoral Mud/Sand Macroinvertebrates (LAM8)? Hyallela azteca-Musculium assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE, suggested from VT 98 reference. Only in the acidic variant? 2) Benthic Littoral Rock: Lake trout-Myriophyllum alterniflorum-[green algae]-Physidae association. Plant Assemblages: sparsely vegetated algae-dominated rocky associations All 4 basic sparsely vegetated rocky associations (LAP 12-15) are documented. Different dominant algae species may vary from ecoregion to ecoregion and across the major physical gradients. See Lake George Report for detailed description. Plant Assemblage: Aquatic Cliff Community (LAP12) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Cliff Vegetation Plant Assemblage: Aquatic Pavement (LAP13) Myriophyllum alterniflorum-Nostoc sp. Sparsely Vegetated Permanently Flooded Pavement Vegetation Plant Assemblage: Aquatic Talus Slope (LAP14) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Talus Slope Vegetation Plant Assemblage: Aquatic Boulder Field (LAP15) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Boulder Field Vegetation Macroinvertebrate Assemblage: Oligotrophic/Mesotrophic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM7) Amnicola-Physidae-Stenonoma assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). VT (1998) Microhabitat Description: wave swept shallow shoreline and shoals. Presence in type strongly suspected. Lake George EOR: Physa heterostropha dominant, especially on aquatic cliff community (LAP12); Amnicola also present. Freshwater sponges common on aquatic pavement (LAP13) and boulder fields (LAP15). Hydroids common on aquatic cliff community (LAP12). Macroinvertebrate Assemblage: Acidic Dystrophic/Oligotrophic Benthic Littoral/Rocky Shoal Macroinvertebrates (LAM6)? Ferresia californica-Trebelos-Phaenopsectra assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. Only in the acidic variant? 3) Benthic Profundal-Sublittoral: Lake trout-Nitella flexilis-Sialis association. Microhabitat Description: below the thermocline. with deep bottom gyttja (organic-rich bottom). strongly limited by dissolved oxygen. Plant Assemblage: Sublittoral Nitella Bed (LAP10) Nitella flexilis Non-Vascular Vegetation Assemblage Description: (See Plant Assemblage Description: including parts extracted from Lake George Report). Typical. Plant Assemblage: Deep Sublittoral Dichotomosiphon tuberosus beds (LAP22) Dichotomosiphon tuberosus Non-Vascular Vegetation Assemblage Description: (See Plant Assemblage Descriptions). type description. Macroinvertebrate Assemblage: Clear, Acidic/Oligotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM2) Sialis-Procladious-Heterotrissocladious assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Presence in this lake type strongly suspected, but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. Only in the acidic variant? Macroinvertebrate Assemblage: Moderately Alkaline Oligotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM3) Pisidium-Amphipoda assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Presence in this lake type strongly suspected, but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. Only in the acidic variant? Macroinvertebrate Assemblage: Eutrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM5)? Chaoborus-Oligochaeta-Chironomus assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Apparently present in Lake George, where it may be limited in size? Chironomids are dominant, may not have genus information yet (RECHECK NYHP field forms, etc.). 4) Pelagic Epilimnion: Lake trout-Cyclotella-Keratella Non-vegetated association. Plant Assemblage: Oligotrophic Lake? Phytoplankton (LAP23) Asterionella-Cyclotella assemblage Assemblage Description: (See Plant Assemblage Descriptions). type description. Zooplankton Assemblage: Oligotrophic Lake? Zooplankton (LAZ6) Keratella-Polyarthra-Bosmina-Daphnia assemblage Assemblage Description: (See Zooplankton Assemblage Descriptions). type description. 5) Pelagic Hypolimnion: Lake trout-[zooplankton] Non-vegetated association. Zooplankton Assemblage: unknown? Assemblage Description: unknown? Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Trophy/Productivity =/- Alkalinity Variants. VT apparently distinguishes oligotrophic vs. "ultra-oligotrophic" lakes (see VT Lake Macrophytes Type 3); here tentatively lumped together pending further discussion. Widoff's classification stratified dimictic lakes into by 5 alkalinity types (which are apparently roughly correlated with trophy), two of these may cover most "oligotrophic" lakes. Need careful review of differences in biota and hydrology. Oligotrophic lakes may be sparsely vegetated (sensu VT's and MEHP's description). Oligo-mesotrophic lakes may be more vegetated (e.g. Lake George, classified by NYHP as ODL: think more about whether Lake George and nearby lakes in SE Adirondacks better fit SLCV ODL type). Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in classification by 5 colors. 3) Substrate Variants. 4) Regional Variants. Distribution: NY: NAPy, STCV?; VT: NAPy?, STCV. NY Examples: ACIDIC (NAP?) VARIANT: ODL EORs: NYFRAN Pine Pond Harrietstown. ODL Leads: numerous leads, only A- and AB-ranked leads listed here. NYHAMI Blue Mountain Lake (O), NYHAMI Queer Lake (O), NYHAMI Limekiln Lake (O), NYFRAN Bear Pond (O), NYFRAN Square Pond (O?), NYESSE Connery Pond (O), NYESSE Wolf Pond (O), NYESSE Newcomb Lake (O?), NYESSE Moose Pond (O), NYESSE Upper Cascade Lake (O), NYHERK Big Moose Lake (O?), NYHERK Honnedaga Lake (O), NYHERK Salmon Lake (O), NYHERK Big Crooked Lake (O), NYWARR Lens Lake (O?), NYFRAN Hoel Pond (O?), NYHAMI Long Lake (O?), NYHAMI Little Tupper Lake (O?), NYHAMI Lake Lila (O), NYHAMI Round Lake (O?), NYHAMI Sagamore Pond (O), NYHAMI Upper Moose Pond (O), NYHAMI Lost Pond (O). Other BCD leads from non-community EORs: NYHAM Charley Pond (O?), NYHERK Twitchell Lake (O), NY.... Madawaska Pond?, NY.... Massawepie Lake, NYESSE? Avalanche Lake, NYESSE Lower Cascade Lake, NYHERK North Lake?, NY.... Dart Lake, NYESSE? Lake Placid. MODERATELY ALKALINE (SLCV?) VARIANT: ODL EORs: NYWARR Lake George (O-M). ODL Leads: NYWARR Loon Lake (O), NYWARR Schroon Lake (O). MDL Leads: NYHAMI Durant Lake (O-M?), NYFRAN Osgood Pond(O-M?), NYFRAN Kiwassa Lake (O-M). Sources: VT Aquatic Working Group (1998), NYHP BCD Community EORs, Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), Sperduto (1992), MEHP (1991), Widoff (1986), VTHP (1989), Roberts et al 1985, NYHP BCD Animal EORs, NYHP BCD Plant EORs, NYHP BCD Significant Habitat EORs. NAC Generalized Macrohabitat Type #10: OLIGOTROPHIC DIMICTIC LAKE Macrohabitat Name: St. Lawrence-Champlain Valley Oligotrophic Dimictic Lake (LM22) 4/25 Synonymy/Affinities/Crosswalk: =NYHP: OLIGOTROPHIC DIMICTIC LAKE (in part) =VTHP (89): Clear, Soft Water Lake/Pond (in part: lake part) =VT 98: Oligotrophic Moderately Alkaline Lake (VT Macroinvertebrate Types 11-15) =VT 98: Oligotrophic Lake (Macrophyte Type 3) =VT 98: Oligotrophic Lake (VT Fish Lake Type 2) =?VT 98: Clear Acidic/Oligotrophic Lake (VT Macroinvertebrate Types 6-10) =Widoff: Softwater (to moderately alkaline?), variously colored, Dimictic Lake/Pond Great Lakes Basin 2000: ?St. Lawrence Lake Plain Lakes (Lake Type L8) (1 of several?) Suggested Alliance Name: Lake trout?-unknown characteristic plant-unknown characteristic macroinvertebrates) Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: large patch? Microhabitat Composition: Depth/Substrate microhabitat: all depth and substrate zones; well developed profundal zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: deep. 30 ft deep (NYHP lead). Turnover/Temperature Regime: dimictic, stratified in both summer and winter, coldwater. Water/Substrate Acidity/Alkalinity: neutral (apparently none of acidic variant of NAP ODL). 7.8 pH (NYHP lead). Trophy/Productivity: oligotrophic, nutrient poor, 21.5 ft secchi depth. Substrate: bottom rocky to sandy? Other Features: Landscape Setting: variable, includes examples on marble bedrock. Biota: Vegetation at low abundance. Some examples noted as coldwater fish spawning areas (apparently with lake trout targeted) (NYHP BCD). Loons are reported on water surface from multiple examples. See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Oligotrophic Lake Fish (LAF2)? Lake trout-round whitefish assemblage Assemblage Description: (See Fish Assemblage Descriptions). Little summary data readily available, compare to NAP ODL. Suggested Microhabitat-Association Composition: (little summary data readily available, compare to NAP ODL) 1) Benthic Littoral Mud/Sand: Largemouth bass-[unknown characteristic plant]-[unknown characteristic macroinvertebrate] association. Fish Assemblage: Mesotrophic-Eutrophic Lake Fish (LAF3) Chain pickerel-golden shiner-pumpkinseed-largemouth bass assemblage. Assemblage Description: (See Fish Assemblage Descriptions). Plant Assemblages: unknown. Assemblage Description: Little summary data readily available, compare to NAP ODL. Macroinvertebrate Assemblages: unknown. Assemblage Description: Little summary data readily available, compare to NAP ODL. 2) Benthic Littoral Rock: Lake trout-[unknown characteristic plant]-[unknown characteristic macroinvertebrate] association. Plant Assemblages: sparsely vegetated algae-dominated rocky associations Assemblage Description: No biotia data yet, green algae likely. All 4 basic sparsely vegetated rocky associations (LAP 12-15) are reported or likely, including Aquatic Cliff Community (LAP12), Aquatic Pavement (LAP13), Aquatic Talus (LAP14) and Aquatic Boulder Field (LAP15). Different dominant algae species may vary from ecoregion to ecoregion and across the major physical gradients. Macroinvertebrate Assemblage: Oligotrophic/Mesotrophic Rocky Littoral/Shoal Macroinvertebrates (LAM7)? Amnicola-Physidae-Stenonoma assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). (SEE NAP ODL). In both ecoregions? 3) Benthic Profundal-Sublittoral: Lake trout-[algae?]-[unknown characteristic macroinvertebrate] association. Macroinvertebrate Assemblage: Clear, Acidic, Oligotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM2)? Sialis-Procladious-Heterotrissocladious assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). (See NAP ODL). Same In both ecoregions? Macroinvertebrate Assemblage: Oligotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM3)? Pisidium-Amphipoda assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). (See NAP ODL). Same In both ecoregions? 4) Pelagic Epilimnion: Lake trout-[Cyclotella?]-[zooplankton] Non-vegetated association. Plant Assemblage: Oligotrophic Lake? Phytoplankton (LAP23)? Asterionella-Cyclotella assemblage Assemblage Description: (See Plant Assemblage Descriptions). (See NAP ODL). Same In both ecoregions? Zooplankton Assemblage: unknown? Assemblage Description: diverse zooplankton with Daphnia spp. possible as in alkaline variant of NAP ODL (Oligotrophic Lake? Zooplankton (LAZ6). 5) Pelagic Hypolimnion: Lake trout-[unknown characteristic zooplanton] Non-vegetated association. Zooplankton Assemblage: unknown? Assemblage Description: unknown? Potential Macrohabitat Variants (Needing further evaluation as separate macrohabitat types or used as prime factors in stratification during portfolio selection): 1) Trophy/Productivity =/- Alkalinity Variants. Widoff's classification stratified dimictic lakes into by 5 alkalinity types, two of these may cover most "oligotrophic" lakes. Need careful review of differences in biota and hydrology. Lakes in SLCV may be oligo-mesotrophic (and all moderately alkaline, not acidic), and moderately vegetated (e.g. Lake George, classified by NYHP as ODL: think more about whether Lake George and nearby lakes in SE Adirondacks better fit SLCV ODL type). Other uncertain, potential splits could include: 2) Color Variants. Widoff stratified this lake type in classification by 5 colors. 3) Substrate Variants. 4) Regional Variants. Distribution: NY: NAPy?, STCVy?; VT: NAP., STCV. Better to treat ODLs in STCV as peripheral example of NAP type? or unique lake type based on unique biota? Aalkaline ODL is shared with NAP while acidic ODL seems unique to NAP. NY Examples: Leads: NYSTLA Cedar Lake (O-M?), NYSTLA Chubb Lake, NY... Millsite Lake?. SEE NAP ODL, moderately alkaline variant, for other possible examples of this type in NAP. Sources: Hunt (1995-2000) NYHP ANC Community Leads, Reschke (1990), VTHP (1989), NYHP BCD Significant Habitat EORs, NYHP BCD Animal EORs. NAC Generalized Macrohabitat Type #11: EUTROPHIC DIMICTIC LAKE Macrohabitat Name: Northern Appalachian Eutrophic (-Mesotrophic) Dimictic Lake (LM23) 4/25 Synonymy/Affinities/Crosswalk: GENERAL TYPE: =Widoff: Alkaline to moderately alkaline, variously colored, Dimictic Lake/Pond =MEHP: Dimictic Mesotrophic Lake Community (ME Lake Type 9) =VT 98: Eutrophic-Mesotrophic Lakes (Lake Macrophyte Type 4) =VT 98: Mesotrophic-Eutrophic Lake (VT Fish Lake Type 3) Great Lakes Basin 2000: ?Adirondack Headwater Lakes and Lake Outlets (Lake Type L6) (1 of several?) EUTROPHIC TYPE: =NYHP: EUTROPHIC DIMICTIC LAKE (in part) =VTHP (89): Very Rich Lake/Pond (lake part; if in NAP) =VT 98: Eutrophic Lakes (Lake Macroinvertebrate Types 21-25) =NHHP: Highly Alkaline Lake/Pond? (in part) MESOTROPHIC TYPE: =NYHP: MESOTROPHIC DIMICTIC LAKE (in part) =VTHP (89): Moderately Rich Lake/Pond (lake part; if in NAP) =VT 98: Mesotrophic Lakes (Lake Macroinvertebrate Types 16-20) =NHHP: Moderately Alkaline Lake/Pond? (in part) Suggested Alliance Name: Largemouth bass-Potamogeton spp.-Chironomus-Dinobryon-Daphnia Alliance Macrohabitat Description (including parameters for use in ELU analysis): Scale: large patch? Microhabitat Composition: Depth/Substrate microhabitat: all depth and substrate zones; well developed profundal zone. Light regime microhabitat: all above-ground. Flow microhabitat: all pool. Water Permanence: permanent. Depth/Surface Area/Morphometry: GENERAL TYPE: Moderately deep (probably only mesotrophic variant); maximum depth > 12 m (MEHP). EUTROPHIC TYPE: Relatively/moderately shallow for a lake. 5-6 m (NYHP EOR), 26-74 ft (NYHP leads). Turnover/Temperature Regime: Dimictic (2 turnovers/year), thermally stratified in both summer and winter (inversely), variable warm to low water temperature, epilimnion to hypolimnion volume ratio relatively large. NYHP EOR: 20% epilimnion, 80% metalimnion/hypolimnion. Water/Substrate Acidity/Alkalinity: GENERAL TYPE: Neutral to basic/hardwater. NYHP EOR: pH 6.15-8.3. EUTROPHIC TYPE: pH 7.3, 17.5 alkalinity (NYHP leads). MESOTROPHIC TYPE: wide pH range but not acidified (NYHP leads). Trophy/Productivity: GENERAL TYPE: Moderately productive (MEHP), transparency varies seasonally and averages moderate to low. Mean summer secchi depth intermediate to low: 3.5 to 6 m (<4 m per Reschke, 1990); NYHP EOR: s.d. <= 2m. DIC 25-250 g/m2/year. EUTROPHIC TYPE: Eutrophic, nutrient rich. High P and chlorophyll a levels (Widoff), s.d. 3.5-17 ft (2-5m) (NYHP leads). MESOTROPHIC TYPE: Mesotrophic, moderately nutrient rich. Intermediate P and chlorophyll a levels (Widoff). With secchi depth 2-4 ft. and anaerobic hypolimnion (NYHP leads). Substrate: Sediment high in organic matter, silty (copropel). Silty shallow bottoms and deep sandy bottoms (NYHP leads). Rocky substrates can also be present, at least in one NYHP MDL EOR. Other Features: Moderately clear to murky, moderately well oxygenated, to oxygen depleted below summer thermocline (e.g., NYHP EDL EOR) and under ice. NYHP EOR: moderately stained. 72 spec. cond. (NYHP leads). Landscape Setting: variable, may have marsh border. Biota: GENERAL TYPE: Moderate to high amounts of algae and rooted vascular plants. Loons are present on some examples. EUTROPHIC TYPE: 1 to 15% vascular plant cover, low vascular plant diversity with 7 species, algae with 10 species and abundant; with excellent fish diversity; Chara to 100% cover in areas (NYHP leads). MESOTROPHIC TYPE: Good biotic habitat diversity with abundant aquatic beds and examples with 40 species of vascular plants (NYHP leads). See also Reschke (1990)/NYHP BCD ELDESCRIP and NYHP BCD EOSPECS. Fish Assemblage: Mesotrophic-Eutrophic Lake Fish (LAF3) Chain pickerel-golden shiner-pumpkinseed-largemouth bass assemblage. Assemblage Description: (See Fish Assemblage Descriptions). Somewhat typical. NYHP EOR: warmwater species including typical species such as northern pike as well as northern redbelly dace, creek chub, common shiner. Suggested Microhabitat-Association Composition: 1) Benthic Littoral Mud/Sand: Largemouth bass-Potamogeton spp.-[Pisidium?] association. Plant Assemblage: NAP Benthic Littoral Tapegrass-Pondweed Bed (LAP6A) Vallisneria americana-Potamogeton perfoliatus Herbaceous Vegetation AND/OR?: Plant Assemblage: SLCV Tapegrass-Pondweed Bed (LAP6B) Potamogeton spp.-Ceratophyllum sp.Midwest Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Typical. Bidens (Megalodonta) beckii in some examples in SE Adirondacks suggests the SLCV variant. Plant Assemblage: NAP Dystrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5A) Nymphaea odorata-Brasenia schreberi association OR? Plant Assemblage: SLCV Eutrophic Benthic Littoral Water Lily Herbaceous Vegetation (LAP5B) Nuphar lutea ssp. advena-Nymphaea odorata Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). typical. Plant Assemblage: Benthic Littoral Pipewort-Water Lobelia Shoal (LAP7)? Eriocaulon aquaticum-Lobelia dortmanna Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Not reported from EORs or leads, but might be in small areas and only in mesotrophic variant. Plant Assemblage: Sand Flats (LAP8) Myriophyllum tenellum-Potamogeton gramineus Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Not reported from EORs or leads, but might be in small areas in mesotrophic variant. Plant Assemblage: Quillwort Meadow (LAP9) Isoetes lacustris-Potamogeton robbinsii Herbaceous Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Not reported from EORs or leads, but might be in small areas and only in mesotrophic variant. Macroinvertebrate Assemblage: same as LAM4 below? Assemblage Description: Unionida, Spongillidae, Odonata, Coleoptera (NYHP EDL EOR); dense Unionida also reported from (NYHP MDL EOR). Macroinvertebrate Assemblage: Mesotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM4)? Hexagenia-Pisidium assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. 2) Benthic Littoral Rock: Largemouth bass-[algae?]-[Physidae?] association. Plant Assemblages: sparsely vegetated algae-dominated rocky associations Green algae likely. All 4 basic sparsely vegetated rocky associations (LAP 12-15) are reported or likely. Different dominant algae species may vary from ecoregion to ecoregion and across the major physical gradients. Plant Assemblage: Aquatic Cliff Community (LAP12) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Cliff Vegetation Plant Assemblage: Aquatic Pavement (LAP13) Myriophyllum alterniflorum-Nostoc sp. Sparsely Vegetated Permanently Flooded Pavement Vegetation Plant Assemblage: Aquatic Talus Slope (LAP14) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Talus Slope Vegetation Plant Assemblage: Aquatic Boulder Field (LAP15) Filamentous Green Algae Sparsely Vegetated Permanently Flooded Boulder Field Vegetation Macroinvertebrate Assemblage: Oligotrophic/Mesotrophic Rocky Littoral/Shoal Macroinvertebrates (LAM7) Amnicola-Physidae-Stenonoma assemblage. Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. In both NAP and SLCV ecoregions? Only in mesotrophic part of range? 3) Benthic Profundal-Sublittoral: Largemouth bass-[Nitella?]-Hexagenia-Chironomus association. Plant Assemblage: Sublittoral Nitella Bed (LAP10) Nitella flexilis Non-Vascular Vegetation Assemblage Description: (See Plant Assemblage Descriptions). Assume VT (1998) examples cited are in this lake type. Chara-dominated areas in NYHP leads. Macroinvertebrate Assemblage: Mesotrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM4) Hexagenia-Pisidium assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. Macroinvertebrate Assemblage: Eutrophic Dimictic Benthic Profundal-Sublittoral Macroinvertebrates (LAM5) Chaoborus-Oligochaeta-Chironomus assemblage Assemblage Description: (See Macroinvertebrate Assemblage Descriptions). Suspected but little summary data readily available. Consult VT EXPERTS FOR VT TYPE; suggested from VT 98 reference. 4) Pelagic Epilimnion: Largemouth bass-Dinobryon-Daphnia dubia Non-vegetated association. Plant Assemblage: Eutrophic Lake? Phytoplankton (LAP24) Ceolosphaerium-Dinobryon-Asterionella assemblage Assemblage Description: (See Plant Assemblage Descriptions). type description. Zooplankton Assemblage: Eutrophic Lake? Zoo