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ACJV Predicted occupancy - Saltmarsh Sparrow (Ammospiza caudacuta) [U.S. Fish and Wildlife Service]

Department of the Interior Full Details

Full Details

Title
ACJV Predicted occupancy - Saltmarsh Sparrow (Ammospiza caudacuta) [U.S. Fish and Wildlife Service]
Description
These data estimate and predict the occupancy for the Saltmarsh Sparrow (Ammospiza caudacuta) using a fine-scale, raster-based vegetation data layer (Correll et al. 2019) using the existing Saltmarsh Habitat and Avian Research Program (SHARP; 2011-2014) point count database spanning tidal marshes from Maine to Virginia. These data were produced along with 5 other complementary layers to 1) estimate Saltmarsh and Nelson's Sparrow occupancy and density across suitable habitat in USFWS Region 5, 2) predict sparrow occupancy and density using these established relationships in unsurveyed areas, and 3) provide an estimate of unknown Sharp-tailed Sparrows within the established hybrid zone for these two species. These data can be used to examine predicted hotspots for Saltmarsh and Nelson's Sparrow occupancy and density to inform local, state, and regional planning efforts involving these species. A full description of methods, results, and accuracy assessment can be foundhere.We strongly recommend use of the numeric values presented in these layers only as an index to identify hotspots, and not for extrapolation of population estimates or trends. For population estimates for Saltmarsh and Nelson's sparrows please reference Wiest et al. 2016 and 2019. For trend estimates please reference Correll et al. 2017.
Creator
Department of the Interior
Temporal Coverage
Last modified 2023-02-14
Date Issued
2023-02-13
Access Rights
Public
Format
File
Language
English
Date Added
August 28, 2025

Location

Links

Cite and Reference

  • Citation
    Department of the Interior (2023). ACJV Predicted occupancy - Saltmarsh Sparrow (Ammospiza caudacuta) [U.S. Fish and Wildlife Service]. . https://gis-fws.opendata.arcgis.com/maps/fws::acjv-predicted-occupancy-saltmarsh-sparrow-ammospiza-caudacuta (web service)
  • BTAA Geoportal Link

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