Name: Recognized Biodiversity Value

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>To identify network of sites that could likely sustain biological diversity into the future, we wanted the network to be composed of climate resilience sites that contained the maximum amount of current biodiversity. </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>To identify areas of high biodiversity value we compiled the results of two sets of intensive, multi-year studies on the locations of exemplary habitats and rare species populations: 1) Ecoregional Plans from The Nature Conservancy and Nature Conservancy of Canada, and 2) Conservation Opportunity Area maps developed as part of State Wildlife Action Plans (SWAPs) or similar state-based biodiversity assessments. We assessed how well these two sets of maps represented the full suite of geophysical settings. In cases where specific geophysical settings were not well represented in these mapped priorities, we supplemented these maps with known occurrences of rare species and communities (NatureServe element occurrences, or EOs) when available; otherwise, for those settings, we identified the largest areas of very high estimated resilience within the relevant ecoregion. We also supplemented these maps by including lands secured from conversion to development under protected GAP1 or GAP 2 level management for nature conservation. This was an important step because in some of the TNC Ecoregional portfolios already protected land (such as Yosemite National Park) were excluded from the portfolio map to focus on new protection. We added all GAP1 and 2 secured lands to the recognized biodiversity values areas given their primary management goals to maintain high quality habitat, natural processes, and thriving species populations. GAP 1 managed lands have as their intent "Nature conservation, with little human interference”. Examples include Research Natural Areas (RNA), Wilderness Areas and Wilderness Study areas, Forever Wild easements, and some TNC preserves where TNC controls management. GAP 2 lands have as their intent "Nature conservation, with heavy management where needed". Examples include National Wildlife Refuges, Areas of Critical Environmental Concern, some National Park land or National Monuments, US Forest Service Special Interest Areas, and some TNC conservation easement lands and preserves.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN>The final Recognized Biodiversity Value dataset is a 30m raster which includes the following four values:</SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN>1: Ecoregion-based</SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>2: Ecoregion and State-based</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN>3: State-based</SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN>4: Additional Habitat and Species Areas, not already included in the above categories of Ecoregion or State-based </SPAN></P><P /><P STYLE="margin:0 0 14 0;"><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>

Service Item Id: 91ad3042aec64b3dbeccfd3ab5ca8015

Copyright Text: The Nature Conservancy created this dataset from multiple publically available source datasets. All data are provided as is. This is not a survey quality dataset. The Nature Conservancy makes no warranty as to the currency, completeness, accuracy or utility of any specific data. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Please see the file Distribute Recognized Biodiversity Value_Data Sources_2020_7_2.xls for a full listing of all the ecoregions, state-based, and additional biodiversity data sources integrated into the Recognized Biodiversity Value 7/2/2020 grid dataset.

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