Benthic polychaetes in the Ratnagiri bay, India: Influence of anthropogenic factors

Show simple item record Sukumaran, S. Bhokepode, K. Telavane, M. Kubal, P. Gajbhiye, S.N. 2011-11-14T10:51:22Z 2011-11-14T10:51:22Z 2011
dc.identifier.citation Journal of Environmental Biology, vol.32; 2011; 719-724
dc.description.abstract Study of changes in macrobenthic community structure is an intrinsic part of many environmental monitoring programmes. Hence, it is pivotal to distinguish the effects of natural and anthropogenic factors on these sensitive organisms for accurate assessment and management of coastal environment. Polychaete species diversity of five stations in the Ratnagiri bay was investigated during premonsoon and postmonsoon months in 2007. Though no spatial trends in polychaete diversity vis-a-vis the pollution was visible, the polychaete univariate indices were uniformily better in premonsoon indicating clear seasonal trends. Shannon diversity values ranged from 1.4-2.4 during premonsoon and 0.6-1.6 during postmonsoon. Station 5, which was most impacted by anthropogenic wastes as demonstrated by the anoxic conditions coupled with higher nutrient load, had comparatively higher H’ values (1.9 and 1.6) and better evenness values (0.9 and 0.7) during both seasons indicating that the polychaetes were not influenced by anthropogenic contamination. The study indicates that the polychaete distribution and diversity in the bay were governed primarily by variations in sediment texture rather than the anthropogenic disturbances.
dc.language.iso en
dc.publisher Triveni Enterprises
dc.rights © 2011 Triveni Enterprises. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject benthos
dc.subject community composition
dc.subject anthropogenic factors
dc.subject seasonal variations
dc.title Benthic polychaetes in the Ratnagiri bay, India: Influence of anthropogenic factors
dc.type Journal Article

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