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Unvegetated to vegetated ratio of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland

Dates

Publication Date

Citation

Ackerman, K.V., Defne, Z., and Ganju, N.K., 2021, Coastal wetlands of the Blackwater region, Chesapeake Bay, Maryland: U.S. Geological Survey data release, https://doi.org/10.5066/P9M7H6XG.

Summary

Note: The 2022 data release "Geospatial Characterization of Salt Marshes in Chesapeake Bay" incorporates the Blackwater region salt marsh dataset. (https://doi.org/10.5066/P997EJYB) This data release contains coastal wetland synthesis products for the geographic region of Blackwater salt marsh complex, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent [...]

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Attached Files

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UVVR_BW.xml
Original FGDC Metadata

View
32.36 KB application/fgdc+xml
UVVR_BW_Browse.png
“UVVR of marsh units overlaying Esri basemap”
thumbnail 1.2 MB image/png
Shapefile: mu_UVVR_BW.zip
mu_UVVR_BW.sld 9.36 KB
mu_UVVR_BW.CPG 5 Bytes
mu_UVVR_BW.dbf 607.43 KB
mu_UVVR_BW.prj 425 Bytes
mu_UVVR_BW.sbn 89.4 KB
mu_UVVR_BW.sbx 7.32 KB
mu_UVVR_BW.shp 70.68 MB
mu_UVVR_BW.shx 66.64 KB

Purpose

The purpose of this shapefile is to calculate the ratio of unvegetated area to vegetated area (UVVR) in each marsh unit. Analysis of unvegetated to vegetated marsh ratio is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. An unvegetated area to vegetated area ratio was defined as a potential indicator of the current state of a salt marsh unit. UVVR was calculated based on U.S. Department of Agriculture National Agriculture Imagery Program (NAIP) 0.6-meter resolution imagery.

Additional Information

Shapefile Extension

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namemu_UVVR_BW.dbf
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namemu_UVVR_BW.prj
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namemu_UVVR_BW

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