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Macrobenthic community of a tropical bay system revisited: historical changes in response to anthropogenic forcing
Dash, B.; Rout, S.S.; Lovaraju, A.; Charan Kumar, B.; Bharati, A.; Ganesh, T.; Satyanarayana, B.; Raman, A.V.; Rakhesh, M.; Raut, D. (2021). Macrobenthic community of a tropical bay system revisited: historical changes in response to anthropogenic forcing. Mar. Pollut. Bull. 171: 112775. https://dx.doi.org/10.1016/j.marpolbul.2021.112775
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
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| Trefwoord |
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| Author keywords |
macrobenthic epifauna; long-term changes; multivariate analysis; mangroves; East coast of India; Kakinada Bay |
| Auteurs | | Top |
- Dash, B.
- Rout, S.S.
- Lovaraju, A.
- Charan Kumar, B.
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- Bharati, A.
- Ganesh, T.
- Satyanarayana, B., meer
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- Raman, A.V.
- Rakhesh, M.
- Raut, D.
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| Abstract |
The present study examines historical perspectives of the macrobenthic community in response to different phases of anthropogenic perturbations in Kakinada Bay, a tropical embayment on the east coast of India. Multivariate analysis of the snapshot data (1958–2017) revealed considerable changes in the Bay environment following a breakwater construction across the Bay mouth in 1997. Subsequently, port expansion activities, industrialization, urbanization, and geomorphic alterations in the Godavari delta brought deterrent changes in the Bay. The fluctuations over the years in hydrographical and sediment characteristics increased environmental heterogeneity and caused significant spatio-temporal shifts in the macrobenthic community between 1995-1996 and 2016-2017. The observed variabilities were suggestive of anthropogenic perturbations of the system with future repercussions on Bay ecosystem functioning. Overall, this study provides evidence on the long-term impact of anthropogenic activities on coastal marine communities and stresses the importance of macrobenthos as bioindicators of such changes in tropical systems. |
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