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Zooplankton production, composition and diversity in the coastal waters of Goa

DRS at CSIR-National Institute of Oceanography

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Title Zooplankton production, composition and diversity in the coastal waters of Goa
 
Creator Goswami, S.C.
Padmavati, G.
 
Subject zooplankton
biological production
check lists
species diversity
temporal variations
spatial variations
coastal waters
 
Description Spatial and temporal variability in zooplankton production, composition and diversity in the coastal waters of Goa were studied. Zooplankton production was bimodal with primary peak during September-October and secondary peak during March-April. Secondary production computed from the zooplankton biomass values fluctuated between 24.7 and 87.2 mgC.m sup(-2) d sup(-1) . Herbiores dominated the zooplankton community and copepods were most abundant. Cladocerans, pteropods and decapod larvae, sergestids, siphonophores, chaetognaths and fish eggs were the other common taxa. Zooplankton population was never dominated by a single group. Swarms of copepods (Temora turbinata), cladocerans (Evadne tergestina), and pteropods (Creseis acicula) occurred in the nutrient enriched enriched environment during early postmonsoon months (October-November). Swarming of these zooplanktonic forms resulted in high biomass but low diversity community. Faunal and species diversity were enhanced with increase of carnivores in the ecosystem. An inverse relationship between zooplankton biomass and species diversity was the general trend. A total of 58 species of pelagic copepods belonging to calanoids(42), cyclopoids (12) and harpacticoids(4) were identified. The occurrence and abundance were influenced by seasons, depth of sampling station and prevailing hydrographic conditions. Niche partioning among congeners was evident.
 
Date 2009-01-20T08:46:48Z
2009-01-20T08:46:48Z
1996
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.25; 91-97p.
http://drs.nio.org/drs/handle/2264/2133
 
Language en
 
Rights Copyright [1996]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher NISCAIR, CSIR