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Macrobenthos of Vembanad estuary in relation to the deposition of degraded water fern Salvinia and other macrophytes

DRS at CSIR-National Institute of Oceanography

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Title Macrobenthos of Vembanad estuary in relation to the deposition of degraded water fern Salvinia and other macrophytes
 
Creator Gopalan, U.K.
Meenakshikunjamma, P.P.
Vengayil, D.T.
 
Contributor Nair, N.B.
 
Subject Aquatic Communities
Environmental Impact
Community Composition
Detritus
Salvinia
ISW, India, Kerala, Vembanad estuary
 
Description Composition and seasonal abundance of macrobenthos in Vembanad estuary (India) seems to be influenced by the density of decaying macrophytes, especially the water fern Salvinia , deposited at the bottom of the estuary at the rate of 356.76 g/m super(2), 400.6 g/m super(2) and 221.65 g/m super(2) during premonsoon, monsoon and postmonsoon respectively In dynamic areas with high oxygen level, the weed deposits were associated with high biomass of bivalves and other regions of denser weed deposits were poorer in biomass and dominated by polychaetes A steady long term increase in the abundance of amphipods attaining the highest density of 70.290/m super(2), seems to be partly due to the progressive ingression of exogeneous macrophytic biomass The possible role of cumulative deposition of macrophytic biomass in bringing about a gradual alternation in the estuarine benthic communities and its significance in the food chain is discussed.
 
Date 1995-09-17T10:01:36Z
2017-09-29T13:48:10Z
1995-09-17T10:01:36Z
2017-09-29T13:48:10Z
1987
 
Type Conference Article
 
Identifier Proceedings of National Seminar on Estuarine Management, Trivandrum, India, 4-5 Jun 1987.; 1987; 410-414
http://drs.nio.org/drs/handle/2264/6058
 
Language en
 
Relation National Seminar on Estuarine Management, Trivandrum, India, 4-5 Jun 1987
NON-SCI
 
Publisher Kerala: State Committee on Science, Technology and Environment