dc.contributor.author | Sankaranarayanan, V.N. | |
dc.contributor.author | Qasim, S.Z. | |
dc.date.accessioned | 1993-12-08T09:56:27Z | |
dc.date.accessioned | 2017-09-29T13:47:25Z | |
dc.date.available | 1993-12-08T09:56:27Z | |
dc.date.available | 2017-09-29T13:47:25Z | |
dc.date.issued | 1968 | |
dc.identifier.citation | Bulletin of National Institute of Sciences of India, vol.38; 1968; 846-853 | |
dc.identifier.issn | 0027-9528 | |
dc.identifier.uri | http://drs.nio.org/drs/handle/2264/5990 | |
dc.description.abstract | From the seasonal changes in the hydrographical features of Cochin area during the year 1965-66, it is possible to deduce that a shore-ward influx of upwelled water occurs from about June to October The effect of this water is felt in very shallow areas During this period the bottom layers become cold, markedly saline, poorly oxygenated and rich in nutrients Minimum oxygen of less than 0.5 ml/L is recorded at 10 m in August The fish populations are not very abundant during this season and tend to avoid the oxygen-deficient water Both fish and prawn catches are poor from June to September The available evidences show that the enrichment of the euphotic zone with nutrients in the post-upwelling period produces an intense phytoplankton bloom The red-tide phenomenon which acts as a further threat to fish life is of common occurrence during this season From November onwards there is a reappearance of fish shoals in coastal waters and a resumption of large scale fishing activity | |
dc.language | en | |
dc.publisher | National Institute of Sciences of India | |
dc.relation.ispartof | B Natl Inst Sci India | |
dc.relation.isreferencedby | NON-SCI | |
dc.subject | Fisheries | |
dc.subject.other | algal blooms | |
dc.subject.other | euphotic zone | |
dc.subject.other | abundance | |
dc.subject.other | nutrients (mineral) | |
dc.subject.other | upwelling | |
dc.subject.other | hydrography | |
dc.subject.other | fisheries | |
dc.subject.other | ISW, India, Kerala, Cochin | |
dc.title | The influence of some hydrographical factors on the fisheries of Cochin area | |
dc.type | Journal Article | |
dc.affiliation.author | CSIR-National Institute of Oceanography, Kochi, Kerala, India | |