Level i ecoregions of north america select map for larger pdf version north america has been divided into 15 broad. Maps offreshwater and marine ecoregions are similarly needed for conservation planning. Terrestrial ecoregions a total of 14 major habitat types reflect the diverse array of organisms adapted to life on land. Terrestrial ecoregions of the world teow is a biogeographic regionalization of the earths terrestrial biodiversity. The wwf identifies terrestrial, freshwater, and marine ecoregions the terrestrial scheme divides the earths land surface into 8 terrestrial ecozones, containing 867 smaller ecoregions. Downloads a shapefile containing the terrestrial ecoregions as defined by olson et al. Although some marine ecoregions may have important levels of endemism, this is not a key determinant in ecoregion identification, as it has been in terrestrial ecoregions.
Terrestrial ecosystems of the world teow, version 2. Nov 01, 2001 the map of terrestrial ecoregions of the world recognizes 867 distinct units, roughly a fourfold increase in biogeographic discrimination over that of the 193 units of udvardy 1975. Ecoregion simple english wikipedia, the free encyclopedia. The biogeographic units are ecoregions, which are defined as relatively large units of land or water containing a distinct assemblage of natural communities sharing a large majority of species, dynamics, and environmental conditions. The wwf has identified 825 terrestrial ecoregions, and approximately 450 freshwater ecoregions across the earth. Covering virtually all freshwater habitats on earth, this firstever ecoregion map, together with associated species data, is a useful tool for underpinning global and regional conservation planning efforts, particularly to identify outstanding and imperiled. This is the master spatial data layer for tncs terrestrial ecoregions of the world, exported from the geodatabase listed above. This is a list of terrestrial ecoregions as compiled by the world wildlife fund wwf. A conservation assessment of the terrestrial ecoregions of latin america and the caribbean eric dinerstein david m. Freshwater ecoregions of the world, feow provides a new global biogeographic regionalization of the earths freshwater biodiversity. Ecoregions are areas where ecosystems and the type, quality, and quantity of environmental resources are generally similar. A conservation assessment of the terrestrial ecoregions of latin america and the caribbean english abstract. Download the report download the digital map purchase the poster version of the map. Terrestrial ecoregions of the indopacific offers a comprehensive examination of the state of the indopacifics biodiversity and habitats, moving beyond endangered or charismatic species to quantify for the first time the number of mammal and bird species, including endemics, in each ecoregion.
Oct 27, 2010 this map depicts the 825 terrestrial ecoregions of the globe. On our map, the indoburma hotspot mittermeier et al. Wwf conservation science wwfs terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or water in the world containing a characteristic set of natural communities that share a large majority of their species, dynamics, and environmental conditions. The rich mosaic of the maps ecoregions calls attention to the importance of global biodiversity, including those. Our biogeographic units are ecoregions, which are defined as relatively large units of land or water containing a distinct assemblage of natural communities sharing a large majority of species, dynamics, and environmental.
Indigenous and traditional peoples in the worlds terrestrial. Note that it includes mangroves, inland water, and rock and ice mhts, although they are not being handled by terrestrial assessments. A map of freshwater ecoregions of the world, released in 2008, has 426 ecoregions covering virtually the entire nonmarine surface of the earth. Covering virtually all freshwater habitats on earth, this firstever ecoregion map, together with associated species data, is a useful tool for underpinning global and regional conservation planning efforts, particularly to identify outstanding and. We define ecoregions as relatively large units ofland containing a distinct assemblage ofnatural communities and species,with. This ecoregion framework is derived from omernik 1987 and from mapping done in collaboration with epa regional offices, other federal agencies, state resource management agencies, and neighboring north american countries. These habitats range from the wettest of forest types to the driest and hottest desert conditions. Global ecoregions, major habitat types, biogeographical realms and the nature conservancy terrestrial assessment units as of december 14, 2009 developed originally by olson, d. Wwf conservation science wwfs terrestrial ecoregions of. World wildlife fund the leading organization in wildlife conservation and endangered species. A conservation assessment of the terrestrial ecoregions of. An integrated approach to conserving the worlds biological and cultural diversity.
A large area of land or water that contains a geographically distinct assemblage of natural communities that. Terrestrial ecoregions of the world teow is a map with a biogeographic regionalization of the earths terrestrial biodiversity. New map of life on earthpublished by the american institute of biological science olson et al. An ecoregion based approach to protecting half the terrestrial realm. Maps of freshwater and marine ecoregions are similarly needed for conservation planning. Our biogeographic units are ecoregions, which are defined as relatively large units of land or water containing a distinct assemblage of natural communities sharing a large majority of species, dynamics, and environmental conditions. Build your own mapping portal and publish it to the world or to just a few collaborators.
Ricketts is affiliated with the conservation science program of world wildlife fund. Terrestrial ecosystems of the world teow from wwfus. Nov 01, 2001 1 november 2001 terrestrial ecoregions of the world. We have developed a detailed map of the terrestrial ecoregions of the world that is better suited to identify areas of outstand ing biodiversity and. Spacesterrestrial ecoregions, for the secretariat of the commission for environmental cooperation. This prioritysetting study elevates, as a first principle, maintaining the representation of all ecosystem and habitat types in regional investment portfolios. Ecoregions of north america ecosystems research us epa. This map depicts the 825 terrestrial ecoregions of the globe. Bookbinder george ledec published in association with the world wildlife fund the world bank washington, d. World wide fund for natures full definition of an ecoregion, which is widely accepted and used, is the following. Wwf international, terralingua, and unep, 2000 this map is a companion to the wwfterralingua report indigenous and traditional peoples of the world and ecoregion conservation. Terrestrial ecoregions of the world teow is a map with a biogeographic regionalization of the earths. The map of terrestrial ecoregions of the world recognizes 867 distinct units, ro ughly a fourfold increase in biogeographic discr imination over that of the 193 units of ud va rd y 1975. The map of terrestrial ecoregions of the world recognizes 867 distinct units, roughly a fourfold.
Dinerstein 2002, bailey 1995 and environment canada wiken, 1986, these data layers were modified by the nature conservancy tnc to be used in its. A total of 14 major habitat types reflect the diverse array of organisms adapted to life on land. An ecoregionbased approach to protecting half the terrestrial realm. We define ecoregions as relatively large units of land containing a distinct assemblage of natural communities and species,with. Conservation science terrestrial ecoregions of the world.
The map of terrestrial ecoregions of the world recognizes 867 distinct units, roughly a fourfold increase in biogeographic discrimination over that of the 193 units of udvardy 1975. A new global map of terrestrial ecoregions provides an innovative tool for conserving biodiversity david m. Freshwater ecoregions are distinct from terrestrial ecoregions, which identify biotic communities of the land, and marine ecoregions, which are biotic communities of the oceans. The material herein may be reproduced without seeking. The information contained herein is the responsibility of the author and does not necessarily reflect the views of the cec, or the governments of canada, mexico or the united states of america. Worlds terrestrial ecoregions classified according to whether the 17% aichi target has been or not achieved in june 2016 for pa coverage andor for protected connected land protconn for a reference dispersal distance d 10 km. Ecoregions are relatively large units of land containing distinct assemblages of natural communities and species, with boundaries that approximate the original extent of natural communities prior to major landuse change. World wildlife fund and nature conservancy terrestrial ecoregion layer, 2011 source data available here. Terrestrial ecosystems of the world teow from wwfus olson. Level ii terrestrial ecosystems ecological regions are areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. Downloads a shapefile containing the terrestrial ecoregions as defined by. In ecological terms, these are strongly cohesive units, sufficiently large to encompass ecological or life history processes for most sedentary species.
Its available for free, along with the digital version of its companion map, indigenous and traditional peoples in the worlds terrestrial ecoregions. These communities share a large majority of their species, dynamics, and environmental conditions. World wildlife fund terrestrial ecoregions represents global terrestrial ecoregions. An ecoregion is defined as a relatively large area of land or water that contains a geographically distinct assemblage of natural communities. The map overlays the locations of the worlds ethnolinguistic groups represented by the locations of the worlds languages onto. Terrestrial ecoregions of the world oxford academic journals. Terrestrial ecoregions of the world publications wwf. Nov 18, 2011 freshwater ecoregions of the world, feow provides a new global biogeographic regionalization of the earths freshwater biodiversity. Select a link for additional details about each level, or a list of links to downloadable maps and gis data files. Earths biologically richest and most endangered terrestrial ecoregions find, read and cite all the research you need on researchgate.