Environmental conditions of some paddy-cum-prawn culture fields of Cochin Backwaters, southwest coast of India

Temperature, salinity, pH, dissolved oxygen, inorganic phosphate, ammonia, nitrite and nitrate of seasonal and perennial prawn culture fields from 3 areas of Cochin backwaters are studied. Area 1 is a region least affected ecologically and the salinity values > 10 x 10 super(-3) occur here during...

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Bibliographic Details
Published in:Indian journal of marine sciences 1988-01, Vol.17 (1), p.24-30
Main Authors: Nair, KKC, Sankaranarayanan, V N, Gopalakrishnan, T C, Balasubramanian, T, Lalithambika Devi, CB, Aravindakshan, P N, Krishnan Kutty, M
Format: Article
Language:English
Subjects:
Brackish
Marine
Penaeidae
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Summary:Temperature, salinity, pH, dissolved oxygen, inorganic phosphate, ammonia, nitrite and nitrate of seasonal and perennial prawn culture fields from 3 areas of Cochin backwaters are studied. Area 1 is a region least affected ecologically and the salinity values > 10 x 10 super(-3) occur here during December to June. Area 2 which is near to the location of effluent discharge from a fertiliser factory shows high concentration of nutrients with low prawn production. Area 3 is most favourably situated to resist ecological distortions because of its proximity to the sea. The results indicate that the fields in areas 1 and 3 have environmental conditions highly suited for prawn culture whereas in area 2 the salinity conditions are not very conducive for prawn growth.
ISSN:0379-5136