Selvaraj, G S D and Paul Pandian, A L and Purushothaman, A (1990) Primary productivity and plankton abundance along the shelf and oceanic waters off southeast coast of India during August, 1987. In: Proceedings of the first workshop on scientific results of FORV Sagar Sampada, 5-7 June 1989, Kochi.
The study is based on the hydro biological data collected on board FORV Sagar Sampada from the shelf and oceanic waters of Bay of Bengal between Lat. 10˚ - 14˚ N and Long. 80˚ - 83˚ E in August, 1987. Mean values of chlorophyll 'a', 'b', 'c' and plant carotenoid pigments in surface water were estimated as 2.180, 0.184, 1.616 and 1.651 mg/m3 in the shelf and 0.333, 0.088,0.406 and 0.297 mg/m3 for the oceanic region respectively while primary productivity experiments (by oxygen method) showed mean values of 146 and 92 mg C/m3/day respectively in the upper euphotic zone. Phytoplankton blooms and zooplankton swarms observed in the shallow shelf region between 10°30' and 11°31YN and along the continental shelf edge and adjacent oceanic waters between 12'30' and 13"3(YN are reported. Wet volume of plankton biomass (soon after preservation ) was found to vary from 0.88-10.6 cc/m3 of water in the shelf and 0.18-1.7 cc/m3in the oceanic region with their mean volume estimated as 3.14 and 0.48 cc/m3 in the respective regions. The concentration of total suspended matter (dry weight) in the surface layer varied from 1.90 -7.91 mg/l. Contribution of plankton biomass to total suspended matter, their distribution pattern and factors relating to their abundance are discussed.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Primary productivity; plankton abundance; shelf; oceanic waters; India|
|Subjects:||Marine Biology > Zooplanktons|
Marine Environment > Primary Production
Marine Biology > Phytoplanktons
|Divisions:||CMFRI-Cochin > Fishery Environment|
|Deposited By:||INVALID USER|
|Deposited On:||14 Oct 2010 11:43|
|Last Modified:||18 Aug 2011 15:44|
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