Changes in trace metals in Thalassia testudinum after hurricane impacts
Document Type
Article
Publication Date
12-2011
Abstract
Major hurricanes Emily and Wilma hit the Mexican Caribbean in 2005. Changes in trace metals in the seagrass Thalassia testudinum prior to (May 2004, 2005) and following passage of these hurricanes (May, June 2006) were determined at four locations along a ∼130 km long stretch of coast. Before the hurricanes, essential metals were likely limiting and concentrations of potentially toxic Pb were high in a contaminated lagoon (27.5 μg g−1) and near submarine springs (6.10 μg g−1); the likely sources were inland sewage disposal or excessive boat traffic. After the hurricanes, Pb decreased to 2.0 μg g−1 in the contaminated lagoon probably through flushing. At the northern sites, essential Fe increased >2-fold (from 26.8 to 68.3 μg g−1 on average), possibly from remobilization of anoxic sediments or upwelling of deep seawater during Wilma. Thus, hurricanes can be beneficial to seagrass beds in flushing toxic metals and replenishing essential elements.
Recommended Citation
Whelan Iii, T., B. I. Van Tussenbroek, and MG Barba Santos. "Changes in trace metals in Thalassia testudinum after hurricane impacts." Marine Pollution Bulletin 62, no. 12 (2011): 2797-2802. https://doi.org/10.1016/j.marpolbul.2011.09.007
Publication Title
Marine Pollution Bulletin
DOI
10.1016/j.marpolbul.2011.09.007
Comments
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