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Some observations on primary production and plankton biomass along the continental shelf and slope off the northeast coast of India during January 1989

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Relation http://eprints.cmfri.org.in/5149/
 
Title Some observations on primary production and plankton biomass along the continental shelf and slope off the northeast coast of India during January 1989
 
Creator Selvaraj, G S D
Srinivasan, V
 
Subject Research Vessel
Primary Production
 
Description The present study deals with the quantitative aspects of chlorophyll pigments,
primary productivity and plankton biomass from the continental shelf and slope off
the northeast coast of India between 16° and 20°N latitudes towards the end of
northeast monsoon season. In surface waters, the mean values of chl-a, -b, and -c
were 0.249,0.275 and 0.837 mg/m^ along the shelf and 0.246,0.260 and 0.805 mg/m^
in the slope respectively while the net primary productivity values were 0.074 and
0.081 g C/m /d for the shelf and slope waters respectively. Column productivity in
the upper 0-50 m water in the shelf and slope regions were 2.9 and 3.25 g C/m /d with
an average production of 3.08 g C/m /d. Higher rate of production was observed
around 18° and 20°N latitudes. Zooplankton biomass exhibited progressive increase
in volume from 16° to 20°N. The estimated mean zooplankton biomass volume of the
study area was 28.83 ml/m . The mean transfer coefficient from primary to secondary
production was found to be 14% when 50% of the zooplankton biomass was
considered as the daily rate of production. From the mean primary and secondary
productivity values, potential tertiary production of pelagic fishery resources in the
upper 0-50 m water column of the study area for the month was assessed.
 
Date 1996
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/5149/1/14.pdf
Selvaraj, G S D and Srinivasan, V (1996) Some observations on primary production and plankton biomass along the continental shelf and slope off the northeast coast of India during January 1989. In: Second workshop on scientific results of FORV Sagar Sampada, 15-17 February 1994, Kochi.