Completed Ecoregional Assessments
Here is a list of completed Ecoregional Assessments organized by region. Assessments are categorized as terrestrial, marine or freshwater however, many assessments address more than one biome. This list is updated periodically. For the most up to date information, or to provide updates on an Ecoregional Assessment you are working on, visitEAST(TNC intranet). If you can provide a link to a completed report that you do not see here, please send the link to conservationgateway@tnc.org.
Terrestrial Ecoregional Assessments ShowHideAsia Pacific Assessment Name: Hengduan Mountains
Ecoregions: PA0509 Hengduan Mountains subalpine conifer forests
(report not available)
Assessment Name: Micronesia
Ecoregions: OC0204 Yap tropical dry forests, OC0101 Carolines tropical moist forests
/coldocs/2004/03/MicroPg1-47_main.pdf
Assessment Name: Nujiang-Lancang Gorge
Ecoregions: PA0516. Nujiang Langcang Gorge alpine conifer and mixed forests
(report not available)
Central United States
Assessment Name: Black Hills
Ecoregions: NA0502. Black Hills
/coldocs/2002/04/bhills_final_apr02pdf.pdf Assessment Name: Central Mixed-Grass Prairie
Ecoregions: NA0802. Central Mixed-Grass Prairie
/coldocs/2003/04/cmgp_final.pdf
Assessment Name: Central Tallgrass Prairie
Ecoregions: NA0804. Central Tallgrass Prairie
/coldocs/2000/11/ctp.pdf
Assessment Name: Crosstimbers and Southern Tallgrass Prairie
Ecoregions: NA0805. Crosstimbers and Southern Tallgrass Prairie
(report not available)
Assessment Name: Edwards Plateau
Ecoregions: NA0807. Edwards Plateau
/coldocs/2005/07/Edwards%20Plateau%20Biodiversity%20and%20Conservation%20Assessment.pdf
Assessment Name: Great Lakes
Ecoregions: NA0404. Great Lakes
/coldocs/2001/06/Summdoc.PDF
Assessment Name: Gulf Coast Prairies and Marshes
Ecoregions: NA0701 Gulf Coast Prairies and Marshes
/coldocs/2003/06/GCPM_Ecoregional_Conservation_Plan.pdf
/coldocs/2003/06/GCPM_Appendices.pdf
Assessment Name: Interior Low Plateau
Ecoregions: NA0406. Interior Low Plateau
/coldocs/2005/01/ILP_plan.pdf
Assessment Name: North Central Tillplain
Ecoregions: NA0410. North Central Tillplain
/coldocs/2003/11/NCT0703.pdf
Assessment Name: Northern Great Plains Steppe
Ecoregions: NA0810. Northern Great Plains Steppe
/coldocs/2002/12/ngps_final_feb99.pdf Assessment Name: Northern Tallgrass Prairie
Ecoregions: NA0811. Northern Tallgrass Prairie
/coldocs/2000/11/plan_main.pdf
Bird Addenum: /coldocs/2000/12/Bird_m_1.pdf
Assessment Name: Osage Plains/Flint Hills Prairie
Ecoregions: NA0812. Osage Plains/Flint Hills Prairie
/coldocs/2000/12/final_plan.pdf
/coldocs/2000/12/final_plan_appendices.pdf
Assessment Name: Ozarks
Ecoregions: NA0413. Ozarks
/coldocs/2004/01/Ozarks_Ecoregional_Conservation_Assessment.pdf Assessment Name: Prairie-Forest Border
Ecoregions: NA0415. Prairie-Forest Border
(report not available)
Assessment Name: Southern Shortgrass Prairie
Ecoregions: NA0813. Southern Shortgrass Prairie
http://conserveonline.org/library/SSP%20Biodiversity%20and%20Conservation%20Assessment_052107.pdf Assessment Name: Superior Mixed Forest
Ecoregions: NA0418. Superior Mixed Forest
/coldocs/2003/05/SMF_Ecoregional_Plan.pdf
Assessment Name: Tamaulipan Thorn Scrub
Ecoregions: NA1312 Tamaulipan Thorn Scrub
(report not available)
Eastern United States
Assessment Name: Central Appalachian Forest
Ecoregions: NA0401. Central Appalachian Forest
/coldocs/2005/03/CAP-plan_2001.pdf
Assessment Name: Chesapeake Bay Lowlands
Ecoregions: NA0421. Chesapeake Bay Lowlands
/coldocs/2005/03/CBYplan.pdf
Assessment Name: High Allegheny Plateau
Ecoregions: NA0405. High Allegheny Plateau
/coldocs/2005/03/HALplan.pdf
Assessment Name: Lower New England / Northern Piedmont
Ecoregions: NA0407. Lower New England / Northern Piedmont
/coldocs/2005/03/LNEplanwithAppendices.pdf
Assessment Name: North Atlantic Coast
Ecoregions: NA0409. North Atlantic Coast
(report not available)
Assessment Name: Northern Appalachian / Acadian
Ecoregions: NA0411. Northern Appalachian-Boreal Forest
(report not available)
Assessment Name: St. Lawrence - Champlain Valley
Ecoregions: NA0417. St. Lawrence-Champlain Valley
/coldocs/2005/03/STL_report.pdf
Assessment Name: Western Allegheny Plateau
Ecoregions: NA0420. Western Allegheny Plateau
(report not available)
Mesoamerica and Caribbean
Assessment Name: Caribbean Basin
Ecoregions: NT0134. Leeward Islands moist forests (partial), NT0179. Windward Islands moist forests (partial), NT0213. Cuban dry forests (partial), NT0220. Lesser Antillean dry forests (partial), NT1305. Caribbean shrublands (partial), NT1402. Bahamian-Antillean mangroves (partial)
(report not available)
Assessment Name: Selvas Maya, Zoque y Olmeca
Ecoregions: NT0148 Pantanos de Centla, NT0154 Peten-Veracruz moist forests, NT0161 Sierra de los Tuxtlas, NT0181 Yucatan moist forests, NT0233 Veracruz dry forests, NT0235 Yucatan dry forests, NT0302 Belizian pine forests, NT0308 Sierra Madre de Oaxaca pine-oak forests, NT1403 Mesoamerican Gulf-Caribbean mangroves
(report not available)
Pacific North America
Assessment Name: Alaska Peninsula and Bristol Bay Basin
Ecoregions: NA0601. Alaska Peninsula, NA1106. Bristol Bay Basin
/coldocs/2004/12/Alaska_Peninsula_and_Bristol_Bay_Basin_Ecoregional_Assessment.pdf
Assessment Name: Alaska-Yukon Arctic
Ecoregions: NA1102. Alaska-Yukon Arctic
http://nature.org/wherewework/northamerica/states/alaska/preserves/art13301.html
Assessment Name: Bering Sea and Aleutian Islands
Ecoregions: NA1104. Bering Sea and Aleutian Islands
/coldocs/2004/04/Ecoregion-Based_Conservation_in_the_Bering_Sea.pdf
Assessment Name: California Central Coast
Ecoregions: NA1201. California Central Coast
/coldocs/2007/07/California%20Central%20Coast%20Ecoregional%20Plan%20Update_Oct_FINAL_APPS.pdf Assessment Name: California North Coast
Ecoregions: NA0503. California North Coast
/coldocs/2002/07/NorthCoast_ERP.pdf
Assessment Name: Canadian Rocky Mountains
Ecoregions: NA0504. Canadian Rocky Mountains
http://science.natureconservancy.ca/initiatives/blueprints/canrockies.php
Assessment Name: Columbia Plateau
Ecoregions: NA1306. Columbia Plateau
/coldocs/2006/01/Columbia%20Plateau%20Final%20Assessment.pdf Assessment Name: Cook Inlet Basin
Ecoregions: NA0611. Cook Inlet Basin
/coldocs/2004/09/Cook_Inlet_Ecoregional_Assessment.pdf
Assessment Name: East Cascades and Modoc Plateau and West Cascades
Ecoregions: NA0506. East Cascades-Modoc Plateau, NA0581. West Cascades
http://conserveonline.org/coldocs/2007/08/EW_Cascades_EA_Main%20Report_final_COL.pdf
Maps: /coldocs/2007/08/EW_Cascades_EA_Maps_COL.pdf
Appendices: /coldocs/2007/08/EW_Cascades_EA_Appendices_COL.pdf Assessment Name: Hawaiian High Islands
Ecoregions: OC0703. Northwestern Hawaii scrub, OC0106. Hawaii tropical moist forests, OC0202. Hawaii tropical dry forests, OC0702. Hawaii tropical low shrublands
http://www.hawaiiecoregionplan.info/ Assessment Name: Klamath Mountains
Ecoregions: NA0510. Klamath Mountains
/coldocs/2004/10/Klamath_Mountains_Ecoregional_Assessment_report.pdf
Assessment Name: North Cascades and Pacific Ranges
Ecoregions: NA0514. North Cascades
http://science.natureconservancy.ca/initiatives/blueprints/northcascades.php Assessment Name: Okanagan
Ecoregions: NA0568. Okanagan
http://science.natureconservancy.ca/initiatives/blueprints/okanagan.php Assessment Name: Pacific Northwest Coast
Ecoregions: NA0515. Pacific Northwest Coast
/coldocs/2007/02/PNW%20Coast%20EA%20Final_Main_Report_Aug21.pdf
Maps: /coldocs/2007/02/PNW%20Coast%20EA%20Maps_Final_Jan3_lowres.pdf
Appendices: /coldocs/2007/02/PNW%20Coast%20EA%20Appendices_Final_Jan3.pdf
Assessment Name: S.E. Alaska - B.C. Coastal Forest and Mountains
Ecoregions: NA0569. S.E. Alaska - B.C. Coastal Forest and Mountains
http://science.natureconservancy.ca/resources/resources.php?Type=all&Region=all&Key=coastal+forest+and+mountains
Within British Columbia: http://www.citbc.org/anaecos.html
Assessment Name: Sierra Nevada
Ecoregions: NA0512. Sierra Nevada
(report not available)
Assessment Name: Willamette Valley - Puget Trough - Georgia Basin
Ecoregions: NA0402. Willamette Valley - Puget Trough - Georgia Basin, NA0517. Willamette Valley - Puget Trough - Georgia Basin
/coldocs/2004/06/WPG_Ecoregional_Assessment.pdf
Rocky Mountains
Assessment Name: Apache Highlands
Ecoregions: NA1301 Apache Highlands
/coldocs/2004/04/Apache_Highlands_Report.pdf
Assessment Name: Arizona-New Mexico Mountains
Ecoregions: NA0501. Arizona-New Mexico Mountains
/coldocs/2000/11/AZNMEcor.pdf
Assessment Name: Central Shortgrass Prairie
Ecoregions: NA0803. Central Shortgrass Prairie
/workspaces/csp/report/csp_final/download
Appendices and other documents available at /workspaces/csp/
Assessment Name: Chihuahuan Desert
Ecoregions: NA1304 Chihuahuan Desert
/coldocs/2003/06/Final_English_CDERP_Report_6-13-03.pdf
Assessment Name: Colorado Plateau
Ecoregions: NA1305. Colorado Plateau
(report not available)
Assessment Name: Great Basin
Ecoregions: NA1307. Great Basin
/coldocs/2002/09/GBblueprint_v2001a.pdf
Assessment Name: Middle Rockies - Blue Mountains
Ecoregions: NA0527. Middle Rockies - Blue Mountains
/coldocs/2002/05/ERP_with_appendices.pdf
Assessment Name: Mojave Desert
Ecoregions: NA1308. Mojave Desert
(report not available)
Assessment Name: Sonoran Desert
Ecoregions: NA1311 Sonoran desert
/coldocs/2001/04/SonoranPlan.pdf
Assessment Name: Southern Rocky Mountains
Ecoregions: NA0521. Southern Rocky Mountains
/coldocs/2002/02/SRMreport.pdf
Assessment Name: Utah-Wyoming Rocky Mountains
Ecoregions: NA0524. Utah-Wyoming Rocky Mountains
/coldocs/2003/10/uwrm_plan_ver2001.pdf
Assessment Name: Wyoming Basins
Ecoregions: NA1313. Wyoming Basins
/coldocs/2003/10/THE_PLAN.PDF
South America
Assessment Name: Alto Parana Atlantic Forests
Ecoregions: NT0150. Alto Parana Atlantic forests
http://www.wwf.org.br/english/publicacoes/download/visao_upperparana_english.zip
Assessment Name: Chaco
Ecoregions: NT0210. Dry Chaco, NT0708. Humid Chaco
Spanish: http://www.tnc.org.br/chaco/chaco.html Assessment Name: Cordillera Real Oriental Paramo and Montane Forests
Ecoregions: NT0121. Eastern Cordillera real montane forests, NT1006. Northern Andean paramo (partial).
/workspaces/cro.era
Assessment Name: Equatorial Pacific
Ecoregions: NT0214 Ecuadorian dry forests, NT0232 Tumbes-Piura dry forests, NT0905 Guayaquil flooded grasslands, Guayaquil Marine Ecoregions, NT1405. South American Pacific mangroves (partial)
/workspaces/pe_era
Assessment Name: Galapagos Xeric Scrub
Ecoregions: NT1307 Galapagos Islands scrubland mosaic
http://www.darwinfoundation.org/downloads/bio_vision_galapagos_eng.pdf
Assessment Name: Northern Andes
Ecoregions: NT0109. Cauca Valley montane forests, NT0118. Cordillera Oriental montane forests, NT0136. Magdalena Valley montane forests, NT0145. Northwestern Andean montane forests, NT0175. Venezuelan Andes montane forests, NT0207. Cauca Valley dry forests, NT0221. Magdalena Valley dry forests, NT0225. Patia Valley dry forests, NT1005. Cordillera de Merida paramo
(report not available)
Assessment Name: Valdivian Temperate Forests
Ecoregions: NT0404 Valdivian temperate forests
English: http://www.wwf.cl/ingles/paginas/vision.htm
Spanish: http://www.wwf.cl/archivos_publicaciones/resumen_vision_biodiversidad.pdf
Southern United States
Assessment Name: Cumberlands and Southern Ridge and Valley
Ecoregions: NA0403. Cumberlands and Southern Ridge Valley
/coldocs/2004/01/CSRVPlan.pdf
Assessment Name: East Gulf Coastal Plain
Ecoregions: NA0507. East Gulf Coastal Plain
/coldocs/2003/08/egcp_ERA_june03.pdf
Assessment Name: Florida Peninsula
Ecoregions: NA0508. Florida Peninsula
(report not available)
Assessment Name: Mid-Atlantic Coastal Plain
Ecoregions: NA0511. Mid-Atlantic Coastal Plain
(report not available)
Assessment Name: Mississippi River Alluvial Plain
Ecoregions: NA0408. Mississippi River Alluvial Plain
(report not available)
Assessment Name: Ouachita Mountains
Ecoregions: NA0412. Ouachita Mountains
/coldocs/2004/05/OuachitaMts_ERA_Report_Dec2003.pdf
Assessment Name: South Atlantic Coastal Plain
Ecoregions: NA0520. South Atlantic Coastal Plain
(report not available)
Assessment Name: Southern Blue Ridge
Ecoregions: NA0416. Southern Blue Ridge
(report not available)
Assessment Name: Tropical Florida
Ecoregions: NT0904. Tropical Florida
(report not available)
Assessment Name: Upper East Gulf Coastal Plain
Ecoregions: NA0419. Upper East Gulf Coastal Plain
(report not available)
Assessment Name: Upper West Gulf Coastal Plain
Ecoregions: NA0522. Upper West Gulf Coastal Plain
/coldocs/2004/04/UWGCP_ERA_Report_June2002.pdf
Assessment Name: West Gulf Coastal Plain
Ecoregions: NA0526. West Gulf Coastal Plain
/coldocs/2005/07/West%20Gulf%20Coastal%20Plain%20Ecoregional%20Plan.pdf
Marine Ecoregional Assessments
ShowHideEastern United States North Atlantic Coast Terrestrial and Marine
Ecoregions: 28040. Northwest Atlantic Coast
Workspace: /workspaces/MECA/NAC_terrestrial
Final Report: /coldocs/2007/09/NAC%20Ecoregional%20Plan.doc
Mesoamerica and Caribbean
Assessment Name: Chiapas-Nicaragua
Ecoregions: 20167. Chiapas-Nicaragua
(report not available)
Assessment Name: Gulf of California (Sea of Cortez) and Near Shore Pacific
Ecoregions: Gulf of California and Near Shore Pacific
(report not available)
Assessment Name: Mexico Southern Pacific
Ecoregions: Mexico Southern Pacific
(report not available)
Assessment Name: Tropical Eastern Pacific
Ecoregions: 20168, Nicoya; 20170, Panama Bight; 20169, Cocos Islands
(report not available) Assessment Name: Equatorial Pacific Assessment
Ecoregions: Equatorial Pacific
/workspaces/MECA/Equatorial%20Pacific.pdf/download
Pacific North America
Assessment Name: Northern Coastal Forests and Mountains
Ecoregions: 28041, Coastal Forests and Mountains - BC; 28055, Coastal Forests and Mountains - SE Alaska
/workspaces/MECA/c-esa-fin-04may04_marine_maps.pdf/download Assessment Name: Pacific Northwest Coast ecoregional assessment (integrated terrestrial, freshwater and marine)
Ecoregions: 28057. Pacific Northwest Coast
/workspaces/MECA/PNWCoast_Final_Main_Report_Aug21.pdf/download Assessment Name: Southern Alaska
Ecoregions: 20054. Gulf of Alaska
(report not available) Assessment Name: Bering Sea and Aleutian Islands
Ecoregions: NA1104. Bering Sea and Aleutian Islands
/coldocs/2004/04/Ecoregion-Based_Conservation_in_the_Bering_Sea.pdf Assessment Name: Bristol Bay/Aleutian Penninsula
Ecoregions: NA0601, Alaska Peninsula and NA1106, Bristol Bay Basin
/workspaces/MECA/BristolBayERA.pdf/download Assessment Name: Cook Inlet, Alaska - Ecoregional Assessment
Ecoregions: NA0611. Cook Inlet Basin
/workspaces/MECA/Cook%20Inlet%20Ecoregional%20Assessment.pdf/download Assessment Name: Willamette Valley-Puget Trough-Georgia Basin Ecoregional Assessment
Ecoregions: Willamette Valley - Puget Trough - Georgia Basin
/workspaces/MECA/WPG%20Ecoregional%20Assessment_marine_maps.pdf/download
Southern United States
Assessment Name: Carolinian Ecoregional Assessment
Ecoregions: 28042. Carolinian
/workspaces/MECA/carolinian_era.pdf/download Assessment Name: Floridian
Ecoregions: 20070. Floridian
(report not available) Assessment Name: Florida Marine Ecoregional Assessment
Ecoregions: n/a
/workspaces/MECA/FL%20Marine%20Site%20Prioritization%20Framework,%20final%20report%20Sept%202005.pdf/download Assessment Name: Northern Gulf of Mexico
Ecoregions: 20043. Northern Gulf of Mexico
/coldocs/2001/02/gulf.pdf
/workspaces/MECA/NGoM_Final_allfigs.PDF/download
World Wildlife Fund
Assessment Name: Bismarck-Solomon Seas Marine Ecoregion
Ecoregions: 20134, Bismarck Sea; 20136, Solomon Sea
(report not available)
Assessment Name: Fiji Island Marine Ecoregion
Ecoregions: 25147 Fiji Islands
(report not available)
Assessment Name: Northwest Atlantic/Grand Banks
Ecoregions: Northwest Atlantic Coast
Partial ecoregion report: http://www.clf.org/uploadedFiles/CLF/General/Publications/Chapter_00_Contents_CLF_WWF_2006.pdf
Freshwater Ecoregional Assessments
ShowHideThe Nature Conservancy/World Wildlife Fund Assessment Name: Mackenzie River Basin
Ecoregions: Portions of: Boreal Cordillera, Boreal Plain, Boreal Shield, Montane Cordillera, Southern Arctic, Taiga Cordillera, Taiga Plain, Taiga Shield
(report not available)
Central United States
Assessment Name: Great Lakes
Ecoregions: NA0404. Great Lakes
Overview of Terrestrial and Aquatic Assessments /coldocs/2001/06/Summdoc.PDF
Aquatic Ecoregional Planning in the U.S. Portion of the Great Lakes Watershed /docs/2007/07/Great%20Lakes%20Aquatic%20Plan%20%28TNC%202001%29.pdf Assessment Name: Conservation Priorities for Freshwater Biodiversity in the Upper Mississippi River Basin
Ecoregions: all or portions of NA0811 Northern Tallgrass Prairie; NA0418 Superior Mixed Forest; NA0415 Prairie-Forest Border; NA0406 Interior Low Plateau; NA0804 Central Tallgrass Prairie; NA0404 Great Lakes
/coldocs/2003/08/UMRB_report.pdf
Mesoamerica and Caribbean
Assessment Name: Freshwater Systems of Mesoamerica
Ecoregions:
(report not available)
South America
Assessment Name: Pantanal
Ecoregions:
(report not available)
Southern United States
Assessment Name: Priority Areas for Freshwater Conservation Action: A Biodiversity Assessment of the Southeastern United States
Ecoregions: 35 Tennessee; 79 Cumberland; 36 Mobile Bay; 40 South Atlantic; 25 Mississippi Embayment
/coldocs/2003/08/se_biodiv_assess.pdf | 
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