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  4. Mean tidal range of marsh units in Maine salt marshes

Mean tidal range of marsh units in Maine salt marshes

Dates

Publication Date

Citation

Ackerman, K.V., Defne, Z., and Ganju, N.K., 2024, Geospatial characterization of salt marshes in Maine: U.S. Geological Survey data release, https://doi.org/10.5066/P9FRGLB0.

Summary

This data release contains coastal wetland synthesis products for the state of Maine. Metrics for resiliency, including the unvegetated to vegetated ratio (UVVR), marsh elevation, tidal range, and lifespan, 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 vulnerability and ecosystem service potential of these wetlands. For this purpose, the response and resilience of coastal wetlands to physical factors [...]

Contacts

Point of Contact :
Kate V Ackerman
Author :
Kate V Ackerman, Zafer Defne, Neil Kamal Ganju
Data Owner :
Woods Hole Coastal and Marine Science Center
USGS Program :
U.S. Geological Survey, Coastal and Marine Hazards and Resources Program
Publisher :
U.S. Geological Survey
USGS Mission Area :
Natural Hazards
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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MN_ME_Browse.png
“Tidal range of marsh units in Maine salt marshes” 		thumbnail 1.12 MB image/png
Shapefile: mu_MN_ME.zip
mu_MN_ME.xml
Original FGDC Metadata
View 		28.05 KB
mu_MN_ME.cpg 5 Bytes
mu_MN_ME.dbf 352.64 KB
mu_MN_ME.lyrx 24.93 KB
mu_MN_ME.prj 425 Bytes
mu_MN_ME.sbn 45.58 KB
mu_MN_ME.sbx 1.44 KB
mu_MN_ME.shp 17.9 MB
mu_MN_ME.shx 36.25 KB
mu_MN_ME.sld 5.87 KB

Purpose

The purpose of this shapefile is to calculate mean tidal range in each marsh unit. Analysis of mean tidal range (MN) is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. Biomass production is positively correlated with mean tidal range in salt marshes along the Atlantic coast of the United States. Recent studies support the idea that enhanced stability of the marshes can be attributed to increased vegetative growth due to increased tidal range. This dataset displays the spatial variation of mean tidal range of marsh units in Maine salt marsh complexes. Mean tidal range is based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v.4.5.1) database (http://vdatum.noaa.gov/).
Tidal range of marsh units in Maine salt marshes
Tidal range of marsh units in Maine salt marshes

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