Organic matter content and particle size modifications in mangrove sediments as responses to sea level rise.

SelectedWorks Author Profiles:

Joseph M. Smoak

Document Type


Publication Date


Date Issued

January 2012

Date Available

November 2013




Mangroves sediments contain large reservoirs of organic material (OM) as mangrove ecosystems produce large quantities and rapidly burial OM. Sediment accumulation rates of approximately 2.0 mm year(-1), based on Pb-210(ex) dating, were estimated at the margin of two well-developed mangrove forest in southern Brazil. Regional data point to a relative sea level (RSL) rise of up to similar to 4.0 mm year(-1). This RSL rise in turn, may directly influence the origin and quantity of organic matter (OM) deposited along mangrove sediments. Lithostratigraphic changes show that sand deposition is replacing the mud (<63 mu m) fraction and OM content is decreasing in successively younger sediments. Sediment accumulation in coastal areas that are not keeping pace with sea level rise is potentially conducive to the observed shifts in particle size and OM content.


Abstract only. Full-text article is available only through licensed access provided by the publisher. Published in Marine Environmental Research, 77, 150-155. DOI: 10.1016/j.marenvres.2012.02.004 Members of the USF System may access the full-text of the article through the authenticated link provided.





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Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.