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Bull. Environ. Contam. Toxicol. (1997) 58: 115–122 © 1997 Springer-Verlag New York Inc. Heavy Metal Concentrations in Cory’s Shearwater, Calonectris diomedea, Fledglings from the Azores, Portugal 1 1,2 1 F. M. Stewart, * L. R. Monteiro, R. W. Furness Applied Ornithology Unit, IBLS, University of Glasgow, Graham Kerr Building, Glasgow, G12 8QQ, United Kingdom Department of Oceanography and Fisheries, University of the Azores, 9900 Horta, Portugal Received: 11 April 1996/Accepted: 4 September 1996 Seabirds have been used extensively as monitors of heavy metals, demonstrating both significant temporal (Thompson et al. 1992) and geographical trends (Walsh 1990). Concentrations of heavy metals are often reported for adult birds but less often for chicks or fledglings (Walsh 1990). However, chicks have been proposed as particularly useful indicators for both baseline pollution studies and monitoring programs, as they concentrate heavy metals during a specific period of time (i.e. hatching to fledging) and from a local and definable foraging area (Walsh 1990). This can be much more valuable than measurements of adult tissue concentrations where it is rarely possible to evaluate the accumulation period or define the feeding area from which metals are accumulated. The Cory’s shearwater, Calonectris diomedea, is a long-lived pelagic seabird
Bulletin of Environmental Contamination and Toxicology – Springer Journals
Published: Jan 1, 1997
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