Abstract:
:Ecostatus of Ulhas estuary, one of the most polluted estuaries along the industrialized and urbanized northwest coast of India, was evaluated by six widely accepted benthic indices viz. H'(log2), AMBI, M-AMBI, BENTIX, BOPA and BO2A to test their efficiency in a tropical setting. The mesohaline zone, which presented eutrophic conditions, was classified as 'bad' by all indices due to the azoic status. Despite significant correlations obtained between indices, there were discrepancies in the accurate level of EcoQS assigned to each station. AMBI was observed to be most efficient in indicating a clear spatial variability from a 'poor' to 'bad' ecological quality status in the middle and upstream zones to an improved status in the downstream region. Limitations of all indices are discussed in light of their suitability for assessing the estuarine environmental condition. The present results could provide a fillip to environmental improvement initiatives currently being undertaken in the estuary.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Mulik J,Sukumaran S,Srinivas T,Vijapure Tdoi
10.1016/j.marpolbul.2017.05.014subject
Has Abstractpub_date
2017-07-15 00:00:00pages
192-202issue
1-2eissn
0025-326Xissn
1879-3363pii
S0025-326X(17)30400-9journal_volume
120pub_type
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