Ecology of benthic production in the coastal zone of Goa

S.N. Harkantra, A.H. Parulekar

Abstract



Qualitative and quantitative differences in the spatial temporal distribution and production of benthic macrofauna in pre- and post-monsoon were observed and the differences are discussed in relation to the environmental factors. The fauna was comprised of Polychaeta (58.5%), Mollusca (18.1%), Crustacea (9.1%), Echinodermata (7.1%) and other minor taxa (7.3%). Population count and biomass varied from 25 to 7823 m-2 (X- = 1256 m-2) and 0.2 to 2251.25 g m-2 (X- = 67.07 g m-2) respectively. The higher biomass was mainly contributed by the brown mussel Perna indica. It is deduced that the benthic standing crop could possibly sustain a high yield of demersal fish catch than what is being exploited at present

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