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A Changing Marsh: The Past, Present, and Future of Grand Bay (AD)

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Detailed Description

Researchers with the [U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) have been working within the Grand Bay National Estuarine Research Reserve and Grand Bay National Wildlife Refuge to track how marsh shorelines are changing over time, study how sediment moves between the marsh and the estuary, and predict how the marsh is responding to sea-level rise.  

Coastal marshes and estuaries like those at Grand Bay are very important as they provide habitat for fish and wildlife, cleanse polluted waters and recharging groundwater aquifers, store carbon from the atmosphere, and help mitigate the effects of sea-level rise and storm impacts. 

Learn more about Estuarine and Marsh Geology research.

References Cited: 

Alizad, K., Hagen, S.C., Medeiros, S.C., Bilskie, M.V., Morris, J.T., Balthis, L., et al., 2018, Dynamic responses and implications to coastal wetlands and the surrounding regions under sea level rise: PLoS ONE, 13(10), e0205176, accessed September 12, 2022 at:

Smith, K.E.L., Terrano, J.F., Khan, N.S., Smith, C.G., Pitchford, J.L., 2021, Lateral shoreline erosion and shore-proximal sediment deposition on a coastal marsh from seasonal, storm and decadal measurements: Geomorphology, v. 389, accessed September 12, 2022 at:

Any use of trade, firm, logos, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 




Video as produced by USGS is public domain.

Video Credits:

“No Title” (Marsh flyover clip) by Roman Skrypnyk from 

“Video Of Wetlands” by Dave Clark from 

“Tall Grasses on a Swamp” by Diana Smykova from 

“A Drone Video of a Marsh Landscape” by Thomas Farlow from 

 Music Credits: 

“Bumbling” by Pictures of the Floating World from Free Music Archive 

“Creative Minds” by Ben Sound from

Videos used with permission from Michael Archer, Glen (Michael) Brochard, Jonathan Pitchford, and Matthew Virden.