Title

Mangrove forest sedimentation and its reference to sea level rise, Cananeia, Brazil.

SelectedWorks Author Profiles:

Joseph M. Smoak

Document Type

Article

Publication Date

2010

Date Issued

January 2010

Date Available

January 2012

Abstract

The stability of a mangrove ecosystem in Cananeia, Brazil, is assessed based on investigations of the site-specific temporal rise in relative sea level during the past 50 years, 100-year sediment accumulation rates (SAR) and sources of organic matter (OM). Addressing this, three sediment cores were collected in a transect, intertidal mud flat, mangrove margin and well into the forest. The net SAR, as estimated by the age–depth relationships of 210Pb and 137Cs, is between 2.5 and 3.9 mm year-1. These rates are comparable to the estimates based on the Pb and Zn contaminant markers corresponding to mining initiation in the region in 1918. Further, the SARs are lower than the rate of regional relative sea level rise (4 mm year-1) as indicated by the past 50-year tide gauge record, but the rate is higher than the eustatic sea level rise (1.7 ± 0.3 mm year-1). The stratigraphies of TOC/TN, δ13C(OC), OP and δ15N indicate site-specific mangal vegetal litter, which is the predominant source of OM at all core sites, during the past century and reflects a stable mangal system over that time span.

Comments

Abstract only. Full-text article is available only through licensed access provided by the publisher. Published in Environmental Earth Sciences, 60, 1291-1301. doi 10.1007/s12665-009-0269-0 Members of the USF System may access the full-text of the article through the authenticated link provided.

Language

en_US

Publisher

Springer

Creative Commons License

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.