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Título: | Trophodynamics of inorganic pollutants in a wide-range feeder: The relevance of dietary inputs and biomagnification in the Yellow-legged gull (Larus michahellis) |
Autor: | Ramos, Raül; Ramírez Benítez, Francisco CSIC ORCID CVN ; Jover, Lluís | Fecha de publicación: | 2013 | Editor: | Pergamon Press | Citación: | Environmental Pollution 172: 235- 242 (2013) | Resumen: | The suitability of sentinel species to monitor environmental pollution is often hampered by an insufficient knowledge on pollutant trophodynamics. We simultaneously evaluated the influence of individuals' trophic position (as revealed by ο15N values) and dietary exploitation of particular systems (using ο13C and ο34S as proxies) on inorganic pollutant concentrations measured on fledglings' feathers of a wide-range feeder, the Yellow-legged Gull (Larus michahellis), sampled at four locations throughout the Western Mediterranean. Concentrations of total Hg and Se in fledgling feathers (2.43 ± 1.30 and 1.16 ± 0.43 οg/g, respectively) were under the threshold points for deleterious effects on seabirds. On the contrary, alarming Pb concentrations were found in one colony (mean: 1.57 ± 2.46 οg/g, range: 0.16-12.13). With the exception of Pb, pollutant concentrations were positively influenced by consumption of marine resources (as suggested by the positive relationship with ο34S values), whereas trophic position played a minor role in determining pollutant body burdens. © 2012 Published by Elsevier Ltd. | URI: | http://hdl.handle.net/10261/67479 | DOI: | 10.1016/j.envpol.2012.09.014 | Identificadores: | doi: 10.1016/j.envpol.2012.09.014 issn: 0269-7491 |
Aparece en las colecciones: | (EBD) Artículos |
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