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Map of benthic substrate classification of the Mississippi barrier islands.

Map of benthic substrate classification of the Mississippi barrier islands showing the location of 8 categories of benthic substrates: coarse to medium sand, fine to very find sand, coarse to medium silt, fine to very fine silt, disposal area, dredged channel, geologic structure, and seagrass bed.

Sand and silt surround the islands of West Ship, East Ship, Horn, Sand, and Petit Bois (shown as gray on the map). Seagrass beds (green polygons) are present on the sound side of the islands. The NPS boundary is delineated as a green outline. The areas mapped as geologic structures may be sand waves.

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Graphic by Trista Thornberry-Ehrlich (Colorado State University) after Lavoie et al. (2013, figure 5) and USACE (2016a).

Public domain:Full Granting Rights

Image

Gulf Islands National Seashore, Code: GUIS

Gulf Islands National Seashore
Latitude: 30.3730602264404, Longitude: -86.9099731445313

NPS.gov Collection

01/01/0001

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Monday, June 14, 2021 1:55:50 PM

Monday, June 14, 2021 1:55:50 PM

Figure 22. GUIS_BenthicSubstrate_0103-2018_tte-01.jpg

Monday, January 1, 0001 12:00:00 AM

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