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Hydrography and plankton productivity of the surf zone of Moplah Bay North Kerala

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Relation http://eprints.cmfri.org.in/4626/
 
Title Hydrography and plankton productivity of the surf zone of Moplah Bay North Kerala
 
Creator Selvaraj, G S D
Varghese, Molly
 
Subject Primary Production
Seawater Analysis
 
Description The study is hased on hydrographic and plankton data collected at intervals of two hours during 0630-1 830 hours from a fixed station in the surf zone of Moplah
Bay during April. July, August, December 1991 and March 1992. Water temperature ranged from 25.1 to 32.@C, salinity 18.9-35.8 ppt, dissolved oxygen 1.9-
4.3 ml/l and net primary productivity 0.01-1.26 g.C/m3/day. Monthwise mean values of temperature, salinity and dissolvedoxygen in water exhibited almost the
same trend of rise and fall during high and low tide periods. Seasonal average values of temperature were 30.3.26.0 and 27.5'C. salinity 33.7.28.5 and 34.5 ppt,
dissolved oxygen 3.5.3.2 and 3.1 ml/l and net primary productivity 610,447 and 573 mg.C/m3/day during March- April (premonsoon), July-August (southwest
monsoon) and December (postmonsoon) re?.pectively, with an average primary production of 543 mg.C/m3day in the hay. Wet displacement volumes of zooplankton
biomass during these periods were 13.5,20.3 and 22.9 ml respectively with an average of 18.9 ml per l00m" water which would mount to 2.82mg C/m3/day. The estimated mew turn-over fmm primary to secondary production level was less than I% in the bay. Results of the experiments pertaining to the
production potential and microbiochemical oxygen demand indicated that the shallow intertidal water zone in the Moplah Bay provides a self replenishing
autotrophic environment.
 
Date 1999
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/4626/1/414.pdf
Selvaraj, G S D and Varghese, Molly (1999) Hydrography and plankton productivity of the surf zone of Moplah Bay North Kerala. In: The Fourth Indian Fisheries Forum, Proceedings, 24-28 November, 1996, Kochi.