World Terrestrial Ecosystems
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1.
United States Geological Survey
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2.
Environmental Systems Research Institute (United States)
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3.
The Nature Conservancy
Description
As the source providing units for several goods and services required for human survival (e.g. food, fuel, fiber, water provision and purification, etc.) ecosystems must be sustainably managed. This will require a globally comprehensive and detailed understanding of the distribution of ecosystems on Earth. While there have been several attempts to partition the planet into large ecologically meaningful areas (ecoregions), a high spatial resolution map of Earth's terrestrial ecosystems at the on-the-ground occurrences (patch) level has heretofore been lacking. A new, high resolution (250 m) map of data-derived World Terrestrial Ecosystems is characterized, and its utility for assessing policy-mandated ecosystem conservation targets is described.