Bioaccumulation syndrome: identifying factors that make some stream food webs prone to elevated mercury bioaccumulation
نویسندگان
چکیده
منابع مشابه
Mercury bioaccumulation in estuarine food webs.
We tested for unintended mercury contamination problems associated with estuarine floodplain restoration projects of the Louisiana coastal zone, USA. Barataria Bay and Breton Sound are two neighboring deltaic estuaries that were isolated by levees from the Mississippi River about 100 years ago. These estuaries recently have been reconnected to the nutrient-rich Mississippi River, starting major...
متن کاملMercury bioaccumulation in a stream network.
Mercury (Hg) contamination is common in stream and river ecosystems, but factors mediating Hg cycling in the flowing waters are much less understood than inthe lakes and wetlands. In this study, we examined the spatial patterns of methylmercury (MeHg) concentrations in the dominant groups of aquatic insect larvae across a network of streams (drainage area ranging from 0.5 to 150 km2) in norther...
متن کاملBioaccumulation patterns of methyl mercury and essential fatty acids in lacustrine planktonic food webs and fish.
Organisms of the planktonic food web convey essential nutrients as well as contaminants to animals at higher trophic levels. We measured concentrations of methyl mercury (MeHg) and essential fatty acids (EFAs, key nutrients for aquatic food webs) in four size categories of planktonic organisms - seston (10-64 microm), micro-(100-200 microm), meso-(200-500 microm), and macrozooplankton (>500 mic...
متن کاملMetal Bioaccumulation by Estuarine Food Webs in New England, USA
Evaluating the degree of metal exposure and bioaccumulation in estuarine organisms is important for understanding the fate of metals in estuarine food webs. We investigated the bioaccumulation of Hg, methylmercury (MeHg), Cd, Se, Pb, and As in common intertidal organisms across a watershed urbanization gradient of coastal marsh sites in New England to relate metal exposure and bioaccumulation i...
متن کاملMercury bioavailability and bioaccumulation in estuarine food webs in the Gulf of Maine.
Marine food webs are important links between Hg in the environment and human exposure via consumption of fish. Estuaries contain sediment repositories of Hg and are also critical habitat for marine fish and shellfish species consumed by humans. MeHg biotransfers from sites of production in estuarine sediments to higher trophic levels via both benthic and pelagic pathways. In this study, we inve...
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ژورنال
عنوان ژورنال: Annals of the New York Academy of Sciences
سال: 2010
ISSN: 0077-8923
DOI: 10.1111/j.1749-6632.2010.05456.x