Vertical distribution of mesozooplankton in the central and eastern Arabian Sea during the winter monsoons

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dc.contributor.author Padmavati, G.
dc.contributor.author Haridas, P.
dc.contributor.author Nair, K.K.C.
dc.contributor.author Gopalakrishnan, T.C.
dc.contributor.author Shiney, P.
dc.contributor.author Madhupratap, M.
dc.date.accessioned 2009-01-11T11:47:43Z
dc.date.available 2009-01-11T11:47:43Z
dc.date.issued 1998
dc.identifier.citation Journal of Plankton Research, Vol.20; 343-354p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/1869
dc.description.abstract The vertical distribution of mesozooplankton in the central and eastern Arabian Sea was investigated during the winter monsoon in 1995. Samples were analysed from discrete depth zones defined according to oxygen and temperature profiles of the water column. Zooplankton had higher standing stock in the mixed layer compared to the strata below. The mixed layer had 78.5% of the total column biomass, while the deepest (500-1000 m) layer accounted for only 0.9%. The stratum between 500 and 1000 m had the lowest abundance of copepods as well as other zooplankton. A notable feature was that zooplankton biomass and density did not show much variations between coastal and offshore regions. Copepoda were the dominant group. Herbivores were generally more abundant at all depths. A total of 94 species of calanoid copepods were identified. Based on vertical distributions, they were assigned to four groups: (1) species restricted to the upper 200 m; (2) predominantly surface-living species with tails to deeper waters; (3) sparser deeper-living species generally confined below 300 m; (4) species occurring throughout the water column. Diversity was fairly high in all strata with equitability being higher in the deeper strata
dc.language.iso en
dc.publisher Cambridge University Press
dc.rights Copyright [1998]. 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.
dc.subject zooplankton
dc.subject vertical distribution
dc.subject oxygen profiles
dc.subject temperature profiles
dc.subject vertical profiles
dc.subject biomass
dc.subject mixed layer
dc.subject check lists
dc.subject species diversity
dc.subject dominant species
dc.subject monsoons
dc.title Vertical distribution of mesozooplankton in the central and eastern Arabian Sea during the winter monsoons
dc.type Journal Article


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