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Título

Factors affecting the organochlorine pollutant load in biota of a rice field ecosystem (Ebro Delta, NE Spain)

AutorPastor, D.; Sanpera, Carolina; González-Solís, Jacob; Ruiz, Xavier; Albaigés Riera, Joan CSIC ORCID
Palabras clavePOPs
Aquatic ecosystems
Rice field
Bioaccumulation
Sediments
Invertebrates
Vertebrates
Fecha de publicación20-ene-2004
EditorElsevier
CitaciónChemosphere 55(4): 567-576 (2004)
ResumenThe concentrations of PCBs, DDTs, HCHs, HCB and OCS were determined in sediments and associated biota, both invertebrates (Physella acuta, Hirudo medicinalis, chironomid larvae, Hydrous pistaceus, Helochares lividus) and vertebrates (Rana perezi), in a temporary aquatic system, a rice field in the Ebro Delta (NE Spain). The qualitative and quantitative distribution of organochlorine compounds in sediments and aquatic biota has been explained by two mechanisms: equilibrium partitioning and/or biomagnification through the trophic web. Nevertheless, bioaccumulation processes are by far more complex, since several biotic and abiotic factors contribute to the observed pollutant loads in the organisms. In this respect, the biological characteristics of the organisms considered (e.g. species, age, lipid contents, feeding habits, etc.), as well as ecological factors (e.g. the habitat of the species and vertical distribution), have been shown to account for the organochlorine levels observed.
Descripción10 pages, 5 figures, 2 tables.-- PMID: 15006509 [PubMed].-- Printed version published Apr 2004.
Versión del editorhttp://dx.doi.org/10.1016/j.chemosphere.2003.11.036
URIhttp://hdl.handle.net/10261/17115
DOI10.1016/j.chemosphere.2003.11.036
ISSN0045-6535
E-ISSN1879-1298
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