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Seabeach Amaranth Presence-Absence Data, Assateague Island National Seashore, 2014

Dates

Publication Date
Time Period
2014

Citation

Gutierrez, B.T., Heslin, J.L., Henderson, R.E., Sterne, T.K., and Sturdivant, E.J., 2023, Seabeach amaranth presence-absence and barrier island geomorphology metrics as relates to shorebird habitat for Assateague Island National Seashore — 2008, 2010, and 2014: U.S. Geological Survey data release, https://doi.org/10.5066/P9GKXN3H.

Summary

Understanding how sea-level rise will affect coastal landforms and the species and habitats they support is critical for developing approaches that balance the needs of humans and native species. Given the magnitude of the threat posed by sea-level rise, and the urgency to better understand it, there is an increasing need to forecast sea-level rise effects on barrier islands. To address this problem, scientists in the U.S. Geological Survey (USGS) Coastal and Marine Geology program are developing Bayesian networks as a tool to evaluate and to forecast the effects of sea-level rise on shoreline change, barrier island geomorphology, and habitat availability for species such as the piping plover (Charadrius melodus) and seabeach amaranth [...]

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Attached Files

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ASIS_Amaranth_2014.jpg
“Distribution of Seabeach Amaranth presence-absence data for 2014.”
thumbnail 4.71 MB image/jpeg
Presence_Absence_pts2014.csv 22.57 KB text/csv
Shapefile: Presence_Absence_pts2014.zip
Presence_Absence_pts2014.cpg 5 Bytes
Presence_Absence_pts2014.dbf 56.69 KB
Presence_Absence_pts2014.prj 167 Bytes
Presence_Absence_pts2014.sbn 1.64 KB
Presence_Absence_pts2014.sbx 180 Bytes
Presence_Absence_pts2014.shp 4.36 KB
Presence_Absence_pts2014.shx 1.32 KB

Purpose

These data (tabular and point shapefile) include observational data of seabeach amaranth (Amaranthus pumilus) as well as random points added for analysis of habitat. Data from existing lidar, vegetation, and substrate datasets were sampled to measure site specific barrier island characteristics where seabeach amaranth was observed on Assateague Island National Seashore. In addition to compiling data where seabeach amaranth are present, three times the number of randomly distributed points were sampled from sites where no seabeach amaranth were present, for the purposes of analysis and the development of habitat suitability models.

Additional Information

Shapefile Extension

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