Journal
MARINE POLLUTION BULLETIN
Volume 72, Issue 1, Pages 188-196Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2013.04.004
Keywords
Suprabenthos; Peracaridan crustaceans; Mercury; Bioaccumulation; Population dynamics
Funding
- FCT (Fundacao para a Ciencia e Tecnologia) through a Project (MERCOAST) [PTDC/MAR/10916/2008]
- POPH - Promotion of Scientific Job
- European Social Fund
- National funds of MEC
- QREN - Promotion of Scientific Job
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This study focuses on the impact of mercury on the dynamics and bioaccumulation patterns of suprabenthic peracarida community along a mercury gradient. Suprabenthic peracarida was negatively affected in terms of biomass, diversity and productivity. Mysids including Mesopodopsis slabberi dominated the community, presenting a regular distribution along the Hg gradient, so are considered tolerant species to mercury. Then, isopods, the second most abundant group, dominated in the most contaminated areas being considered also a tolerant group. Contrarily, amphipods were negatively correlated with higher Hg concentrations, dominating in the intermediate areas, thus are considered more sensitive species. In addition, isopods and amphipods were the taxa with higher mercury body burden, followed by mysids. This paper highlights the importance of suprabenthic peracarida as a vehicle of mercury transference through the estuarine trophic web since it is a main link between benthic and pelagic levels and an essential food resource for numerous fish species. (C) 2013 Elsevier Ltd. All rights reserved.
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