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| 02420nam 2200409za 4500 |
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| 001 | 9.856422 |
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| 003 | CaOODSP |
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| 005 | 20221107155527 |
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| 007 | cr ||||||||||| |
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| 008 | 180510s1989 bccb ob f000 0 eng d |
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| 020 | |z0662173740 |
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| 022 | |z0831-6481 |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |as-cl--- |
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| 086 | 1 |aCW69-5/83E-PDF|zCW69-5/83E |
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| 100 | 1 |aVermeer, Kees. |
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| 245 | 10|aTrace metals in the marine bird food chain downstream from the El Salvador copper mine, Chile |h[electronic resource] / |cKees Vermeer and Juan Carlos Castilla. |
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| 260 | |aDelta, B.C. : |bCanadian Wildlife Service, Pacific and Yukon Region, |c1989. |
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| 300 | |a16 p. : |bmap. |
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| 490 | 1 |aTechnical report series ; |vno. 83 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"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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| 530 | |aIssued also in print format. |
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| 546 | |aIncludes abstract in French. |
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| 693 | 4|aWater birds |
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| 693 | 4|aFood chains (Ecology) |
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| 693 | 4|aCopper mines and mining |
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| 693 | 4|aPollutants |
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| 693 | 4|aChile |
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| 700 | 1 |aCastilla, Juan Carlos. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aCanadian Wildlife Service. |bPacific and Yukon Region. |
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| 830 | #0|aTechnical report series (Canadian Wildlife Service)|vno. 83.|w(CaOODSP)9.504438 |
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| 856 | 40|qPDF|s769 KB|uhttps://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-83-eng.pdf |
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