Ecological Land Units (ELUs)

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Almost 100 years ago, The Naturalists Guide to the Americas, a 761-page volume, was the first effort by ecologists to catalog “all preserved and preservable areas in North America in which natural conditions persist.”

Varied efforts have followed, most notably by The Nature Conservancy, and provided important contributions, but were either narrower in scope or were not ongoing.

"Last Great Places" research uses open data on an open platform to assess priority areas for conserving natural diversity in the United States - initially the lower 48 states. Any area proposed for conservation can be evaluated by a common set of standards. It seeks to improve over time as new approaches are suggested or new data are available.

Contact: Please feel free to share any questions, suggestions or contributions. Email glow@appliedconservation.com

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