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Unvegetated to vegetated ratio of marsh units in Eastern Shore of Virginia salt marshes

Dates

Publication Date

Citation

Ackerman, K.V., Defne, Z., and Ganju, N.K., 2023, Geospatial characterization of salt marshes on the Eastern Shore of Virginia: U.S. Geological Survey data release, https://doi.org/10.5066/P9E6V0QK.

Summary

This data release contains coastal wetland synthesis products for the Atlantic-facing Eastern Shore of Virginia (the data release for the Chesapeake Bay-facing portion of the Eastern Shore of Virginia is found here: https://doi.org/10.5066/P997EJYB). Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and tidal range 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 of providing federal, state, and local managers with tools to estimate the [...]

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Attached Files

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UVVR_ESV_Browse.png
“UVVR of marsh units on the Eastern Shore of Virginia.”
thumbnail 1.12 MB image/png
Shapefile: mu_UVVR_ESV.zip
mu_UVVR_ESV.CPG 5 Bytes
mu_UVVR_ESV.dbf 484.49 KB
mu_UVVR_ESV.prj 425 Bytes
mu_UVVR_ESV.sbn 59.89 KB
mu_UVVR_ESV.sbx 2.23 KB
mu_UVVR_ESV.shp 49.11 MB
mu_UVVR_ESV.shx 49.77 KB
mu_UVVR_ESV.sld 9.37 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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