Abstract:
:The macrofauna in the north Marmara Sea were identified and evaluated with univariate measures and biotic indices (BENTIX, AMBI). As expected, the diversity and species' variety decreased as the sediments became muddier and as the stress increased. The AMBI index failed to detect the spatial differentiation of the EcoQ between the sites whereas, the BENTIX index succeeded (in 70% of the cases) in producing an ecologically relevant classification reflecting the environmental pressures. Results suggested that risks of reduced species' richness and diversity from organic loading and other associated stressors in sediments should be relatively low at TOC concentrations < about 6 mg/g, high at concentrations>about 22 mg/g, and intermediate at concentrations in-between. It is suggested that these TOC critical points may be used as a general screening-level indicator for assessing the EcoQ in association with reduced biodiversity over coastal areas receiving organic wastes and other pollutants from human activities. It is further suggested that both assignment of species to ecological groups and classification scales for biotic indices (AMBI, BENTIX) for sites in the Mediterranean Sea should be readjusted so as to be closer related to environmental variables.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Albayrak S,Balkis H,Zenetos A,Kurun A,Kubanç Cdoi
10.1016/j.marpolbul.2005.11.022subject
Has Abstractpub_date
2006-07-01 00:00:00pages
790-9issue
7eissn
0025-326Xissn
1879-3363pii
S0025-326X(05)00558-8journal_volume
52pub_type
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更新日期:2020-07-01 00:00:00
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journal_title:Marine pollution bulletin
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更新日期:2006-01-01 00:00:00
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journal_title:Marine pollution bulletin
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