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dc.contributor.authorWang, Zhaohui Aleck  Concept link
dc.contributor.authorKroeger, Kevin D.  Concept link
dc.contributor.authorGanju, Neil K.  Concept link
dc.contributor.authorGonneea, Meagan E.  Concept link
dc.contributor.authorChu, Sophie N.  Concept link
dc.identifier.citationLimnology and Oceanography 61 (2016): 1916–1931en_US
dc.description© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Limnology and Oceanography 61 (2016): 1916–1931, doi:10.1002/lno.10347.en_US
dc.description.abstractDynamic tidal export of dissolved inorganic carbon (DIC) to the coastal ocean from highly productive intertidal marshes and its effects on seawater carbonate chemistry are thoroughly evaluated. The study uses a comprehensive approach by combining tidal water sampling of CO2 parameters across seasons, continuous in situ measurements of biogeochemically-relevant parameters and water fluxes, with high-resolution modeling in an intertidal salt marsh of the U.S. northeast region. Salt marshes can acidify and alkalize tidal water by injecting CO2 (DIC) and total alkalinity (TA). DIC and TA generation may also be decoupled due to differential effects of marsh aerobic and anaerobic respiration on DIC and TA. As marsh DIC is added to tidal water, the buffering capacity first decreases to a minimum and then increases quickly. Large additions of marsh DIC can result in higher buffering capacity in ebbing tide than incoming tide. Alkalization of tidal water, which mostly occurs in the summer due to anaerobic respiration, can further modify buffering capacity. Marsh exports of DIC and alkalinity may have complex implications for the future, more acidified ocean. Marsh DIC export exhibits high variability over tidal and seasonal cycles, which is modulated by both marsh DIC generation and by water fluxes. The marsh DIC export of 414 g C m−2 yr−1, based on high-resolution measurements and modeling, is more than twice the previous estimates. It is a major term in the marsh carbon budget and translates to one of the largest carbon fluxes along the U.S. East Coast.en_US
dc.description.sponsorshipUSGS Coastal & Marine Geology Program; U.S. National Science Foundation Grant Number: OCE-1459521; NOAA Science Collaborative Grant Number: NA09NOS4190153; USGS LandCarbon Programen_US
dc.publisherJohn Wiley & Sonsen_US
dc.rightsAttribution-NonCommercial 4.0 International*
dc.titleIntertidal salt marshes as an important source of inorganic carbon to the coastal oceanen_US

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial 4.0 International