Occurrence of heavy metals in the sediments of Uranouchi Inlet, Kochi prefecture, Japan
Fisheries Science, ISSN: 0919-9268, Vol: 75, Issue: 2, Page: 413-423
2009
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Article Description
The present status of contamination by heavy metals, and the impact of cage culture on sediments at the Uranouchi Inlet, Kochi Prefecture, Japan, were investigated from two stations influenced by intensive aquaculture and a control station, during May-July 2006. The moisture content of the sediments at the aquaculture stations was over 65%, and the organic matter was always over 100 mg/g dry wt. In contrast, the highest moisture content and organic matter at the control station was 45.5% and 62.9 mg/g dry wt, respectively. Concentrations of zinc (Zn) (178 ± 4.8 mg/kg dry wt) and copper (Cu) (125 ± 1.2 mg/kg dry wt) were highest at the aquaculture stations. Lead (Pb) was highest (50.7 ± 0.77 mg/kg dry wt) at the aquaculture station though it was as high as 33.2 ± 0.77 mg/kg dry wt at the control station. One-way ANOVA showed that the differences in concentrations of Zn and Cu in sediments from the aquaculture and control stations were highly significant (P = 0.01), whereas Pb showed no such trend. Occurrence of a large fraction of labile Zn (56.1%) and Cu (40.3%) in these sediments warrants attention. Although factors other than metals may explain the distribution observed, the information presented here may be useful in predicting long-term effects of heavy metal contamination from aquaculture in the marine environment. © 2009 The Japanese Society of Fisheries Science.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=67849090549&origin=inward; http://dx.doi.org/10.1007/s12562-008-0054-0; http://link.springer.com/10.1007/s12562-008-0054-0; http://link.springer.com/content/pdf/10.1007/s12562-008-0054-0; http://link.springer.com/content/pdf/10.1007/s12562-008-0054-0.pdf; http://link.springer.com/article/10.1007/s12562-008-0054-0/fulltext.html; https://dx.doi.org/10.1007/s12562-008-0054-0; https://link.springer.com/article/10.1007/s12562-008-0054-0; http://www.springerlink.com/index/10.1007/s12562-008-0054-0; http://www.springerlink.com/index/pdf/10.1007/s12562-008-0054-0
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