Concentration and mobilisation of Cd, Cu, Pb and Zn by meiofauna populations living in harbour sediment: their role in the heavy metal flux from sediment to food web

被引:48
|
作者
Fichet, D
Boucher, G
Radenac, G
Miramand, P
机构
[1] Univ La Rochelle, Lab Biol & Environm Marins, F-17042 La Rochelle 01, France
[2] Museum Natl Hist Nat, Lab Biol Invertebres Marins, UPESA 8044, F-75005 Paris, France
关键词
heavy metals; sediment; meiofauna; concentration; mobilisation; transfer; flux;
D O I
10.1016/S0048-9697(99)00401-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The bioavailability of Cd, Cu, Pb and Zn was assessed in different harbours of the Atlantic coast (France). The responses of the two dominant meiobenthic groups (nematodes and copepods) to a heavy metal contamination gradient measured in similar subtidal sediments were observed in field surveys. Heavy metal concentrations were measured in nematodes and copepods. Nematodes have higher Cd, Cu, Pb and Zn transfer factors than copepods or other benthic species. The flux of heavy metal through nematodes was estimated and appears to be important compared to plankton in the process of heavy metal transfer to benthic or pelagic food webs. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:263 / 272
页数:10
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