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- W3123429477 abstract "The IUCN Red List of Ecosystems (RLE) is an emerging global standard for ecosystem risk assessment that integrates data and knowledge to document the relative risk status of ecosystem types. Here we summarize initial findings from the applying IUCN criteria to 107 grassland and savanna ecosystems in temperate North America. Determining threatened status first requires type description and mapping. Then, a series of measures are applied addressing trends in ecosystem extent, the relative restricted nature of its distribution, and the relative severity of environmental degradation and disruption of biotic processes. All measures aim to gauge the probability of range wide collapse. Ecosystems may be scored as collapsed, critically endangered, endangered, vulnerable, near threatened, least concern, data deficient, or not evaluated. From this analysis, and taking uncertainty into account, 67 (63%) of grassland and savanna ecosystem types scored as threatened (i.e., either critically endangered (25%), endangered (14%), or vulnerable (24%)). Examples of threatened ecosystems include Midwestern tallgrass prairies and oak savannas, Pine barrens of the Northeast, California Central Valley grasslands and oak savannas, Palouse prairie, savannas and wet prairies of Washington and Oregon, Southeastern glades and barrens, and Florida dry prairie and inland scrub. These ecosystems historically occupied about 2.5 million km2 of North America but today account for only 834,000 km2, a loss of two-thirds of historical extent. Those listed in the most severely threatened categories of critically endangered or endangered today account for about 110,000 km2 or an 88% loss of their historical extent of about 930,000 km2. This result reflects conditions at temperate latitudes where, such as in the United States and Canada, advanced industrial economies have actively transformed ecosystems over recent centuries. The RLE provides governments with a means to prioritize conservation effort and for researchers to advance knowledge critical to natural resource conservation assessment, planning, management, and monitoring." @default.
- W3123429477 created "2021-02-01" @default.
- W3123429477 creator A5051939532 @default.
- W3123429477 date "2022-01-01" @default.
- W3123429477 modified "2023-10-17" @default.
- W3123429477 title "Red Listing Temperate Grasslands and Savannas in North America" @default.
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- W3123429477 doi "https://doi.org/10.1016/b978-0-12-821139-7.00011-8" @default.
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