Heavy metal concentrations in surficial sediments and benthic macroinvertebrates from Anzali wetland, Iran

Between June 1993 and March 1994 surficial sediments and benthic macro-invertebrates (chironomid larvae, tubificid worms, Mytilaster lineatus and Corbicula fluminalis) were collected from 6 sites in various parts of the internationally important Anzali wetland reserve. All samples were analysed for...

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Bibliographic Details
Published in:Hydrobiologia 1996-09, Vol.331 (1-3), p.53-61
Main Author: POURANG, N
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Chironomidae
Corbicula fluminalis
Ecotoxicology, biological effects of pollution
Fresh water environment
Freshwater
Fundamental and applied biological sciences. Psychology
Mytilaster lineatus
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Summary:Between June 1993 and March 1994 surficial sediments and benthic macro-invertebrates (chironomid larvae, tubificid worms, Mytilaster lineatus and Corbicula fluminalis) were collected from 6 sites in various parts of the internationally important Anzali wetland reserve. All samples were analysed for copper, lead, manganese and zinc. Sediments were analysed for organic matter and the grain-size was measured. Heavy metal concentration varied significantly between sampling sites but not seasonally. Compared with other freshwater bodies, the heavy metal levels identified presented no danger to wetland ecological equilibrium. Copper and manganese concentrations were higher in detritivorous benthos than filter feeders but no definite trend was found for lead and zinc.
ISSN:0018-8158
1573-5117
DOI:10.1007/BF00025407