This appendix describes the terrestrial ecological systems that are specific to the San Juan planning area, including ranking criteria which serve as indicators of size, condition and landscape context. Note that Appendix 6 summarizes the detailed ranking criteria from this appendix. This appendix describes each of the following 11 systems that BLM selected, out of 33 systems total that are known to exist on the BLM lands in the San Juan Planning Area:
Colorado Plateau Hanging Garden, Colorado Plateau Mixed Bedrock Canyon and Tableland, Colorado Plateau Pinyon-Juniper Shrubland, Colorado Plateau Pinyon-Juniper Woodland, Inter-Mountain Basins Big Sagebrush Shrubland, Inter-Mountain Basins Mixed Salt Desert Scrub, Inter-Mountain Basins Semi-desert Grassland, Rocky Mountain Alpine-Montane Wet Meadow, Rocky Mountain Gambel Oak-Mixed Montane Shrubland, Rocky Mountain Lower Montane Riparian Woodland and Shrubland, Rocky Mountain Subalpine-Montane Fen.
BLM and other agencies can use these descriptions to inform desired conditions for systems, potential area-wide lease stipulations or use restrictions, and vegetation and fire management plans and activities.