Parent Layer: Sequence Divergence

Name: anpu_dvrg

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Description: Genetic diversity within species provides the raw material for adaptation and evolution. Just as regions of high species diversity are conservation targets, identifying regions containing high genetic diversity and divergence within and among populations may be important to protect future evolutionary potential. When multiple co-distributed species show spatial overlap in high genetic diversity and divergence, these regions can be considered evolutionary hotspots. We analyzed genetic data from a variety of vertebrate and invertebrate species distributed across the Mojave Desert to map regions of high genetic diversity and divergence. These genetic landscapes can be analyzed with respect to current and proposed development footprints or other landscape level environmental stressors to assess the potential impacts on reservoirs of genetic diversity. Resulting GIS-based maps can be incorporated into ongoing landscape planning efforts and highlight specific regions where further investigation of impacts to population persistence and genetic connectivity may be warranted. A genetic divergence landscape for each species was interpolated from point values using the genetic landscapes GIS toolbox and standardized between 0 and 1. Dataset shows genetic divergence across areal extent as a series of one kilometer grids with pixel values representing a standardized divergence value expressed lowest to highest ranging from 0 to 1. Spatial extent is masked by suitable habitat derived from species distribution models and genetic sampling extent.

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Copyright Text: U.S. Geological Survey

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