Summary This layer is an input layer for one of the South Atlantic LCC indicators in the “pine woodlands, savannas, and prairies” category. To read more about the indicators and how they are being used, please visit the indicator page (http://www.southatlanticlcc.org/page/indicators). Description Bachman's and Henslow's sparrow habitat distribution models were developed by the SE GAP analysis group and the Designing Sustainable Landscapes project . For these models, the expert opinion and natural history of southeastern bird species, summarized by Hamel (1992), were matched with SE GAP land cover classifications, mapped in 2000, to determine potential presence or absence of species. Data show potential distribution of bird species [...]
Summary
Summary This layer is an input layer for one of the South Atlantic LCC indicators in the “pine woodlands, savannas, and prairies” category. To read more about the indicators and how they are being used, please visit the indicator page (http://www.southatlanticlcc.org/page/indicators).
Description Bachman's and Henslow's sparrow habitat distribution models were developed by the SE GAP analysis group and the Designing Sustainable Landscapes project . For these models, the expert opinion and natural history of southeastern bird species, summarized by Hamel (1992), were matched with SE GAP land cover classifications, mapped in 2000, to determine potential presence or absence of species. Data show potential distribution of bird species (yes/no) based on land cover, but do not depict species distribution.
For Bachman's sparrow, a minimum of 3 ha patch sizes were considered suitable and approximately 25 land cover classifications were mapped as suitable (habitat present) in the South Atlantic LCC pine ecosystem. Translated to the 2011 NLCD, the classifications related to some evergreen forests (i.e., SE GAP longleaf and pine flatwoods classifications only), shrub/scrub, and grassland/herbaceous (i.e., ~pastures and fallow fields).
For Henslow's sparrow, a minimum of 30 ha patch sizes were considered suitable and ~33 land cover classifications were mapped as suitable within the South Atlantic LCC (habitat present) pine ecosystem. Translated to the 2011 NLCD, classifications are extremely similar to Bachman's sparrow (see above). Taken together, the species ranges extend the entire South Atlantic LCC.
GIS Processing All indicators were initially computed, or in the case of existing data, were resampled to 1 ha spatial resolution using the nearest neighbor method. For computational reasons, we then used the Spatial Analyst aggregate function to rescale the resolution to 200 m. The aggregate function avoided loss of detail by taking the maximum value of each cell in the conversion (e.g., species presence).
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HenslowsSparrow.zip
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Henslow.zip
Henslow.sd
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Purpose
This layer is an input layer for one of the South Atlantic LCC indicators in the “pine woodlands, savannas, and prairies” category. To read more about the indicators and how they are being used, please visit the indicator page (http://www.southatlanticlcc.org/page/indicators).