Indicator: Marsh Extent

Aug 10, 2020
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Description:

This indicator captures the overall acres of freshwater and saltwater marsh currently present in the South Atlantic geography.

Reason for Selection

Overall acreage of existing freshwater and saltwater marsh provides an indicator of whether marsh being inundated by sea level rise is being replaced or restored somewhere else. It is also well monitored and resonates with a diversity of audiences.

Input Data

2016 National Land Cover Database (2016 NLCD)

Mapping Steps

Pixels identified as “emergent herbaceous wetlands” in the 2016 NLCD were considered existing marsh.

Final indicator values

Indicator values were assigned as follows:

1 = Freshwater or saltwater marsh

Disclaimer: Comparing with Older Indicator Versions

There are numerous problems with using South Atlantic indicators for change analysis. Please consult Blueprint staff if you would like to do this (email hilary_morris@fws.gov).

Literature Cited

Homer, Collin G., Dewitz, Jon A., Jin, Suming, Xian, George, Costello, C., Danielson, Patrick, Gass, L., Funk, M., Wickham, J., Stehman, S., Auch, Roger F., Riitters, K. H., Conterminous United States land cover change patterns 2001–2016 from the 2016 National Land Cover Database: ISPRS Journal of Photogrammetry and Remote Sensing, v. 162, p. 184–199, at https://doi.org/10.1016/j.isprsjprs.2020.02.019.

Data Provided By:
generated using ADIwg mdTranslator 2.17.1
Data Hosted by:
ScienceBase (USGS) View Record
Map Service URL:
https://gis.usgs.gov/sciencebase2/rest/services/Catalog/5f2adb5582cef313eda0f26c/MapServer/
Content date:
2020-08-15 04:00:00 (lastRevision Date), 2020-08-15 04:00:00 (Release Date), 2019-08-15 04:00:00 (Start Date), 2021-08-15 04:00:00 (End Date)
Citation:
Rua Mordecai(Point of Contact), Amy Keister(Point of Contact), Hilary Morris(Point of Contact), U.S. Fish and Wildlife Service(Point of Contact), Southeast Conservation Adaptation Strategy (SECAS)(Point of Contact), 2020-08-15(lastRevision), 2020-08-15(Release), Indicator: Marsh Extent, http://www.southatlanticlcc.org/blueprint/, http://secassoutheast.org/blueprint
Contact Organization:
Southeast Conservation Adaptation Strategy (SECAS)
U.S. Fish and Wildlife Service
Contact Person(s):
Use Constraints:
otherRestrictions - limitation not listed; This work is licensed under a [Creative Commons Attribution 4.0 International License](http://creativecommons.org/licenses/by/4.0/). The blueprint data and maps provided are only intended for use as a reference tool for landscape-level conservation planning efforts.
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FGDC Standard Metadata XML
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Original Metadata XML
Click here to see the full XML file that was originally uploaded with this layer.
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About the Uploader

South Atlantic Blueprint

The South Atlantic Conservation Blueprint is a living spatial plan to conserve natural and cultural resources for current and future generations in the face of future change. It spans parts of six states, from Virginia to Florida, including U.S. waters to 200 miles offshore. The Blueprint...