Journal
MARINE POLLUTION BULLETIN
Volume 68, Issue 1-2, Pages 127-133Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2012.12.008
Keywords
Trace metal; Coral reef; Fluvial influence; Metal pollution
Funding
- UNAM (PAPIIT and PAPCA, FESI)
- CONACYT [VER-2006-01-37637]
- CONABIO [DM005]
- UNAM (PASPA, DGAPA)
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This study focused on the spatial distribution of trace metals in the Veracruz Reef System in the Southern Gulf of Mexico, and its variability in the early (July) and late (September) rainy season of 2008, by analyzing the concentration of Cd, Cu and Pb in benthic macroalgae. Mean concentrations are lower (Pb 295 +/- 347 ng g(-1), Cd 17.9 +/- 15.0 ng g(-1)), or similar (Cu 3.4 +/- 4.5 mu g g(-1)) to those reported from other coastal areas. Cd and Pb concentrations are influenced by the discharge of the Jamapa River, evidencing a fluvial control on coastal trace metal levels. Also, Cd and Cu concentrations were lower in the late rainy season, when there is a high load of suspended sediments derived from fluvial discharge, which probably adsorb dissolved metals decreasing their bioavailability. Pb concentrations have been decreasing in the last two decades in the SGM, after the banning of leaded-gasoline in the late 20th century. (C) 2012 Published by Elsevier Ltd.
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