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Effect of mining activities on the clam fisheries and bottom fauna of Goa estuaries

DRS at CSIR-National Institute of Oceanography

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Title Effect of mining activities on the clam fisheries and bottom fauna of Goa estuaries
 
Creator Parulekar, A.H.
Ansari, Z.A.
Ingole, B.S.
 
Subject Aquatic Pollution
estuaries
biomass
species diversity
environmental impact
zoobenthos
marine molluscs
mining
pollution effects
ISW, India, Goa
 
Description Comparison of two clam beds and associated benthic fauna, in Mandovi and Cumbarjua canal estuarine system of Goa, India, severely affected by massive inputs of mining rejects, revealed that, in less than 10 years (1972-73 to 1982-83), high biotic variability induced by increasing environmental stress has caused irreversible ecosystem instability. Reduced dissolved oxygen concentration; high suspended solids and blanketing of bottom deposits by mining rejects, has resulted in more than 70% reduction in clam production; near extinction of resident fauna and the appearance of a low diversity bottom fauna, comprising of tolerant but vagrant species. Ever increasing entry of mining rejects, which has reduced the healthy and highly productive estuarine environment of 1972-73, into an impoverished biotope, in less than 10 years, unless prevented will result in the total extinction of estuarine life in the near future
 
Date 1995-06-09T10:01:15Z
2017-09-29T13:48:18Z
1995-06-09T10:01:15Z
2017-09-29T13:48:18Z
1986
 
Type Journal Article
 
Identifier Proceedings of the Indian Academy of Sciences (Animal Sciences), vol.95; 1986; 325-339
http://drs.nio.org/drs/handle/2264/6188
 
Language en
 
Relation P Indian As-Anim Sci
SCI
 
Publisher Indian Academy of Sciences, Bangalore