Trace metals in the marine bird food chain downstream from the El Salvador copper mine, Chile / Kees Vermeer and Juan Carlos Castilla. : CW69-5/83E-PDF
"Trace metals in a marine bird food chain were investigated in the Chañaral area, downstream from the El Salvador copper mine, Chile. Beach deposits, algae and marine invertebrates showed a decreasing residue gradient for arsenic, copper, iron, lead, titanium and vanadium from the tailings discharge site on the edge of the visible tailing deposits. Cadmium was found in high levels in marine organisms at some reference sites. Observed metal levels in birds, except cadmium, were thought to be close to background levels and may reflect the presence of little contaminated prey for birds to feed upon in the tailing deposit area. Cadmium levels of some concern (40-90 ppm) were observed in Whimbrels (Numenius hudsonicus) and in sand crabs (Emerita analoga) (5-6 ppm). It is suggested that the cadmium pathway should be further investigated in the Whimbrel food chain"--Abstract, p. i.
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| Ministère/Organisme | Canada. Environment Canada. Canadian Wildlife Service. Pacific and Yukon Region. |
|---|---|
| Titre | Trace metals in the marine bird food chain downstream from the El Salvador copper mine, Chile / Kees Vermeer and Juan Carlos Castilla. |
| Titre de la série | Technical report series ; no. 83 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Issued also in print format. Includes abstract in French. |
| Information sur la publication | Delta, B.C. : Canadian Wildlife Service, Pacific and Yukon Region, 1989. |
| Auteur / Contributeur | Vermeer, Kees. Castilla, Juan Carlos. |
| Description | 16 p. : map. |
| Numéro de catalogue |
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| Descripteurs | Water birds Food chains (Ecology) Copper mines and mining Pollutants Chile |