Ecology of Indian estuaries: Ecology and distribution of benthic macrofauna in the Ashtamudi Estuary, Kerala

N.B. Nair, P.K.A. Azis, M. Arunachalam, K. Dharmaraj, K. Krishnakumar


The occurrence and relative abundance of benthic fauna in 4 selected stations of the Ashtamudi Estuary have been studied for one year. Maximum occurrence was observed at Neendakara, the station closest to the sea and the minimum at Kadapuzha a polluted station in the lower reaches of the Kallada River, the other two stations showing intermediate values. Quantitative distribution of the different groups of benthic fauna has been discussed in relation to salinity and dissolved oxygen. Nature of sediment and bottom water characteristics have also been briefly discussed


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