This page lists publicly available completed ecoregional assessments carried out by The Nature Conservancy and our partners. You can find out more at the Ecoregional Assessment Status Tool (EAST).

• Asia Pacific

  • Baltic Sea Marine
         Ecoregion Type(s): Marine
  • Bismarck Solomon Seas Ecoregional Conservation Assessment
         Ecoregion Type(s): Marine
  • Borneo Conservation Assessment
         Ecoregion Type(s): Terrestrial
  • East Kalimantan Conservation Assessment
         Ecoregion Type(s): Terrestrial
  • Federated States of Micronesia Ecoregional Plan
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://conserveonline.org/docs/2004/03/MicroPg1-47_main.pdf
  • Freshwater Priority Areas in the Southeastern United States
         Ecoregion Type(s): Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/08/se_biodiv_assess.pdf
  • Lesser Sundas Network Design
         Ecoregion Type(s): Marine
  • Palau Protected Areas Network
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://conserveonline.org/workspaces/pacific.island.countries.publications/palau/palauera
  • Papua New Guinea National GAP Analysis and Conservation Plan for Climate Change.
         Ecoregion Type(s): Terrestrial
  • Sulu Suluwesi Sea Conservation Assessment
         Ecoregion Type(s): Marine
  • Suluwesi Conservation Assessment
         Ecoregion Type(s): Terrestrial, Freshwater
  • Transfly Conservation Assessment
         Ecoregion Type(s): Terrestrial, Freshwater

• Latin America

  • Alto Parana Atlantic Forests
         Ecoregion Type(s): Terrestrial
  • Amazon Regional Assessment
         Ecoregion Type(s): Terrestrial
  • Amazonia
         Ecoregion Type(s): Marine
  • Amazonian Flooded Forests
         Ecoregion Type(s): Terrestrial
  • Baja California Peninsula
         Ecoregion Type(s): Terrestrial, Freshwater
  • Bolivian Yungas
         Ecoregion Type(s): Terrestrial
  • Central Chile
         Ecoregion Type(s): Terrestrial, Freshwater
  • Central and Occident of Mexico
         Ecoregion Type(s): Terrestrial
  • Cerrado
         Ecoregion Type(s): Terrestrial, Freshwater
  • Chaco
         Ecoregion Type(s): Terrestrial
  • Chiquitano Dry Forests
         Ecoregion Type(s): Terrestrial
  • Cordillera Real Oriental Paramo and Montane Forests
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/workspaces/cro.era
  • Eastern Brazil
         Ecoregion Type(s): Marine
  • Ecuador Economic Exclusive Zone (EEZ) Marine
         Ecoregion Type(s): Marine
  • Ecuadorian Choco
         Ecoregion Type(s): Terrestrial
  • Equatorial Pacific
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://conserveonline.org/workspaces/pe_era
  • Freshwater Systems of Mesoamerica
         Ecoregion Type(s): Freshwater
         Assessment URL: http://geo.usm.edu/pto/documents/ERP_AguaDulce_Meso_V1.pdf
  • Galapagos Xeric Scrub
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://www.darwinfoundation.org/english/_upload/bio_vision_galapagos_eng.pdf
  • Gulf of California (Sea of Cortez) and Near Shore Pacific Marine
         Ecoregion Type(s): Marine, Freshwater
  • Gulf of Mexico Northern Neotropical Forests
         Ecoregion Type(s): Terrestrial
  • Humboldt Current
         Ecoregion Type(s): Marine
  • Mesoamerican Reef Marine
         Ecoregion Type(s): Marine
  • Northeastern Brazil
         Ecoregion Type(s): Marine
  • Northern Andes
         Ecoregion Type(s): Terrestrial
  • Orinoco Llanos
         Ecoregion Type(s): Terrestrial
  • Pantanal
         Ecoregion Type(s): Terrestrial
  • Peruvian Yungas
         Ecoregion Type(s): Terrestrial
  • Rio Grande
         Ecoregion Type(s): Marine
  • Selvas Maya, Zoque y Olmeca
         Ecoregion Type(s): Terrestrial
  • Serra do Mar coastal forests
         Ecoregion Type(s): Terrestrial
  • Southwestern Amazon
         Ecoregion Type(s): Terrestrial
  • Terrestrial Systems of Mesoamerica
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://www.ecomeso.org/
  • Tropical Eastern Pacific Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://geo.usm.edu/pto/documents/EEC_Meso_PTO_May08.pdf
  • Valdivian Temperate Forests
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://assets.panda.org/downloads/resumen_vision_biodiversidad.pdf

• North America

  • Alaska - Coastal Forests and Mountains Ecoregion Assessment and Resource Synthesis
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/workspaces/akcfm
  • Alaska Peninsula and Bristol Bay Basin
         Ecoregion Type(s): Terrestrial, Marine, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/12/Alaska_Peninsula_and_Bristol_Bay_Basin_Ecoregional_Assessment.pdf
  • Alaska Regional Assessment
         Ecoregion Type(s): Terrestrial
  • Alaska Yukon Arctic
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://nature.org/wherewework/northamerica/states/alaska/preserves/art13301.html
  • Apache Highlands
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/04/Apache_Highlands_Report.pdf/
  • Arizona-New Mexico Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2000/11/AZNMEcor.pdf/
  • Aspen Parkland
         Ecoregion Type(s): Terrestrial
  • Bahamas
         Ecoregion Type(s): Terrestrial
  • Bering Sea and Aleutian Islands
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://conserveonline.org/coldocs/2004/04/Ecoregion-Based_Conservation_in_the_Bering_Sea.pdf/
  • Black Hills
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/docs/2002/04/bhills_final_apr02pdf.pdf
  • British Virgin Islands
         Ecoregion Type(s): Terrestrial
  • California Central Coast
         Ecoregion Type(s): Terrestrial, Freshwater
  • California North Coast
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2002/07/NorthCoast_ERP.pdf/
  • California South Coast
         Ecoregion Type(s): Terrestrial, Freshwater
  • Canadian Rocky Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://science.natureconservancy.ca/initiatives/blueprints/canrockies.php
  • Caribbean Basin
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/workspaces/Caribbean.conservation/CDSS_technical_report_final.pdf
  • Carolinian Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://conserveonline.org/workspaces/MECA/carolinian_era.pdf
  • Central Appalachian Forest
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/docs/2005/03/CAP-plan_2001.pdf
  • Central Mixed-Grass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/04/cmgp_final.pdf
  • Central Shortgrass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/workspaces/csp/report/csp_final
  • Central Tallgrass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/central-tallgrass-prairie-ecoregional-assessment
  • Chesapeake Bay Lowlands
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/docs/2007/03/CBYplan_070130.pdf
  • Chihuahuan Desert
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/coldocs/2003/06/Final_English_CDERP_Report_6-13-03.pdf
  • Colorado Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
  • Columbia Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2006/01/Columbia%20Plateau%20Final%20Assessment.pdf
  • Cook Inlet Basin
         Ecoregion Type(s): Terrestrial, Marine, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/09/Cook_Inlet_Ecoregional_Assessment.pdf/
  • Crosstimbers and Southern Tallgrass Prairie
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/library/a-conservation-blueprint-for-the-crosstimbers
  • Cuba ERA
         Ecoregion Type(s): Terrestrial
  • Cumberlands and Southern Ridge and Valley
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/01/CSRVPlan.pdf
  • Dakota Mixed-Grass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/workspaces/dmgp/documents/conserving-the-biological-diversity-of-the-dakota
  • Dominican Republic
         Ecoregion Type(s): Terrestrial, Freshwater
  • East Cascades - Modoc Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2007/08/EW_Cascades_EA_Main%20Report_final_COL.pdf
  • East Gulf Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/08/egcp_ERA_june03.pdf
  • Edwards Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2005/07/Edwards%20Plateau%20Biodiversity%20and%20Conservation%20Assessment.pdf
  • Fescue-Mixed Grass Prairie
         Ecoregion Type(s): Terrestrial
  • Florida Peninsula
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/florida-peninsula-ecoregional-plan
  • Floridian Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://conserveonline.org/workspaces/MECA/FL%20Marine%20Site%20Prioritization%20Framework%2C%20final%20report%20Sept%202005.pdf
  • Great Basin
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2002/09/GBblueprint_v2001a.pdf
  • Great Central Valley
         Ecoregion Type(s): Terrestrial
  • Great Lakes
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2001/06/Summdoc.PDF
  • Greater Caribbean Marine
         Ecoregion Type(s): Marine
  • Grenada
         Ecoregion Type(s): Terrestrial
  • Gulf Coast Prairies and Marshes
         Ecoregion Type(s): Terrestrial, Marine, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/06/GCPM_Ecoregional_Conservation_Plan.pdf/
  • Haiti
         Ecoregion Type(s): Terrestrial
  • Hawaiian High Islands
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://www.hawaiiecoregionplan.info/
  • Hawaiian Islands Marine
         Ecoregion Type(s): Marine
  • High Allegheny Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2005/03/HALplan.pdf/
  • Interior Low Plateau
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://www.conservationgateway.org/file/interior-low-plateau-ecoregion-conservation-plan
  • Jamaica
         Ecoregion Type(s): Terrestrial
  • Klamath Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/docs/2004/10/Klamath_Mountains_Ecoregional_Assessment_report.pdf
  • Lower New England / Northern Piedmont
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2005/03/LNEplanwithAppendices.pdf
  • Mid-Atlantic Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/mid-atlantic-coast-plain-macp-ecoregional-plan
  • Middle Rockies - Blue Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2002/05/ERP_with_appendices.pdf
  • Mississippi River Alluvial Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/conservation-planning-in-the-mississippi-river
  • Mojave Desert
         Ecoregion Type(s): Terrestrial
  • North Atlantic Coast
         Ecoregion Type(s): Terrestrial, Marine, Freshwater
         Assessment URL: http://conserveonline.org/library/NAC%20Ecoregional%20Plan.doc
  • North Cascades and Pacific Ranges
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://science.natureconservancy.ca/initiatives/blueprints/northcascades.php
  • North Central Tillplain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/11/NCT0703.pdf/
  • Northern Appalachian / Acadian
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/NAP_sections070131.pdf
  • Northern California Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://conserveonline.org/library/northern-california-marine-ecoregional-assessment
  • Northern Coastal Forests and Mountains Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://science.natureconservancy.ca/initiatives/blueprints/ncoastformtn.php
  • Northern Great Plains Steppe
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2002/12/ngps_final_feb99.pdf
  • Northern Gulf of Mexico Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://conserveonline.org/coldocs/2001/02/gulf.pdf
  • Northern Tallgrass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/workspaces/ntpe/documents/northern-tallgrass-prairie-ecoregional-plan
  • Northwest Atlantic Marine Ecoregional Assessment
         Ecoregion Type(s): Marine
  • Northwest Atlantic/Grand Banks Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://www.clf.org/work/OC/oceanconservationareas/docs/CLF_WWF_2006.pdf
  • Okanagan
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://science.natureconservancy.ca/initiatives/blueprints/okanagan.php
  • Osage Plains/Flint Hills Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/final_plan.pdf
  • Ouachita Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/05/OuachitaMts_ERA_Report_Dec2003.pdf
  • Ozarks
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/01/Ozarks_Ecoregional_Conservation_Assessment.pdf
  • Pacific Northwest Coast
         Ecoregion Type(s): Terrestrial, Marine, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2007/02/PNW%20Coast%20EA%20Final_Main_Report_Aug21.pdf
  • Piedmont
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/piedmont-ecoregion-a-plan-for-biodiversity
  • Prairie-Forest Border
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/PrairieForestBorder_FINALREPORT_wExhibits.pdf
  • Puerto Rico
         Ecoregion Type(s): Terrestrial
  • Sierra Nevada
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/docs/2006/06/SierraNV_plan_LowRes.pdf
  • Sonoran Desert
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2001/04/SonoranPlan.pdf
  • South Atlantic Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/south-atlantic-coastal-plain-ecoregion-plan
  • Southern Blue Ridge
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/southern-blue-ridge-ecoregional-conservation-plan
  • Southern California Marine
         Ecoregion Type(s): Marine
         Assessment URL: http://conserveonline.org/library/southern-california-marine-ecoregional-assessment
  • Southern Caribbean Marine
         Ecoregion Type(s): Marine
  • Southern Rocky Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2002/02/SRMreport.pdf
  • Southern Shortgrass Prairie
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/docs/2007/05/SSP%20Biodiversity%20and%20Conservation%20Assessment_052107.pdf
  • St. Lawrence - Champlain Valley
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/coldocs/2005/03/STL_report.pdf
  • St. Vincent and the Grenadines
         Ecoregion Type(s): Terrestrial
  • Superior Mixed Forest
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/05/SMF_Ecoregional_Plan.pdf
  • Tamaulipan Thornscrub
         Ecoregion Type(s): Terrestrial
  • Tropical Florida
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/tropical-florida-ecoregional-plan/
  • US Virgin Islands
         Ecoregion Type(s): Terrestrial
  • Upper East Gulf Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
  • Upper Mississippi River Basin
         Ecoregion Type(s): Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/08/UMRB_report.pdf
  • Upper West Gulf Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2004/04/UWGCP_ERA_Report_June2002.pdf
  • Utah High Plateaus
         Ecoregion Type(s): Terrestrial, Freshwater
  • Utah-Wyoming Rocky Mountains
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/10/uwrm_plan_ver2001.pdf
  • West Cascades
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2007/08/EW_Cascades_EA_Main%20Report_final_COL.pdf
  • West Gulf Coastal Plain
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2005/07/West%20Gulf%20Coastal%20Plain%20Ecoregional%20Plan.pdf
  • Western Allegheny Plateau
         Ecoregion Type(s): Terrestrial
  • Willamette Valley - Puget Trough - Georgia Basin
         Ecoregion Type(s): Terrestrial, Marine
         Assessment URL: http://conserveonline.org/docs/2004/06/WPG_Ecoregional_Assessment.pdf
  • Wyoming Basins
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/coldocs/2003/10/THE_PLAN.PDF

• North Asia

  • China National Ecoregional Assessment
         Ecoregion Type(s): Terrestrial
  • Eastern Steppe
         Ecoregion Type(s): Terrestrial
  • Lower Yangtze River Basin (Freshwater)
         Ecoregion Type(s): Freshwater
  • Mongolian and Manchurian Grasslands (China portion)
         Ecoregion Type(s): Terrestrial
  • Sichuan Provincial Ecoregional Assessment
         Ecoregion Type(s): Terrestrial
  • Upper Yangtze River Basin (Freshwater)
         Ecoregion Type(s): Freshwater
         Assessment URL: http://conserveonline.org/library/upper-yangtze-river-basin-ecoregional-assessment
  • Upper Yangtze River Basin (Terrestrial)
         Ecoregion Type(s): Terrestrial
         Assessment URL: http://conserveonline.org/library/upper-yangtze-river-basin-ecoregional-assessment/
  • Yunnan Great Rivers Project Conservation Assessment
         Ecoregion Type(s): Terrestrial, Freshwater
         Assessment URL: http://conserveonline.org/library/conservation-and-development-action-plan-for-0/