Publication Detail

Outwelling of Dissolved Organic Carbon from Salt Marshes

Robert F. Chen, Jaye Cable, Jennifer Cherrier, Christof Meile, Bernie Gardner, Xuchen Wang, Francesco Peri, Maggie Esch, Emily Gray, Hayley Schiebel, Gabrielle Lyon, Jill Arriola
22 pp.
MITSG 13-40
$5.50 DOM / $7.50 INT

Salt marshes are among the most productive ecosystems on earth. Tidal inundation by seawater leads to outwelling of dissolved organic carbon (DOC) to the marsh creek, estuary, and ultimately the coastal ocean. Up to 90% of the exported DOC can come from fringing marsh areas. Marsh creek transects, continuous creek monitoring stations, continuous water velocity measurements, well transects established near the creek bank, modeling of marsh-creek exchange across the creek bank, incubations of sediment, water, and vegetation, chemical and isotopic compositional analysis of DOC, estimates of tidal water exchange volumes, and local meteorology all contribute to our overall understanding of salt marsh outwelling processes. We will present data from the Plum Island, MA, Neponset, MA, and Snipe Creek, FL salt marshes. In our estimation,a significant amount of DOC is exported from the marsh, but most of this labile DOC is rapidly remineralized in the creek and nearshore coastal waters. Precipitation, seasonal growth patterns, and wind events can significantly affect this carbon export and must be considered in large scale estimates of carbon outwelling from salt marshes.

type: Presentations

Parent Project

Project No.: 2010-R/RT-2/RC-117
Title: Consortium for Ocean Sensing In the Nearshore Environment (COSINE)

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