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Geographical variation in the distribution of different calanid species in the Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Title Geographical variation in the distribution of different calanid species in the Indian Ocean
 
Creator Stephen, R.
 
Subject zooplankton
check lists
geographical distribution
population density
abundance
hydrography
Copepoda
 
Description The species composition of Calanidae in the Indian Ocean was studied from zooplankton collections taken between 24 degrees N to 40 degrees S and 20 degrees E to 120 degrees E. Nannocalanus minor was widespread with high density along the African and Arabian coast. Calanus australis was confined to the vicinity of the subtropical convergence and the maximum population was encountered from South African Waters. Undinula vulgaris and Cosmocalanus darwin were abundant in the productive upwelling zones off Arabia, Somalia and Sumatra, the former being totally absent in the south central Indian Ocean. Canthocalanus pauper was widespread and abudant in the northern Indian Ocean. Neocalanus gracilis was well represented in the equatorial Indian Ocean and also at a few stations in the northern Arabian Sea. N. robustior was found to inhabit the equatorial and southern region, and N. tonsus was distributed in the southern provinces especially in the South African waters. Calanoides carinatus the copepod which is associated with upwelling was encountered along the Arabian and Somali coasts. This study also indicated occasional surfacing behaviour of C. carinatus. The hydrographical features that restrict the distribution of the above species are highlighted in this paper
 
Date 2009-01-11T11:51:29Z
2009-01-11T11:51:29Z
1998
 
Type Conference Article
 
Identifier Pelagic Biogeography ICoPB II. Proceedings of the 2nd International Conference. Final report of SCOR/IOC working group 93 , Ed by: Pierrot-Bults, A.C.; Spoel, S. van der 338-344p.
http://drs.nio.org/drs/handle/2264/1898
 
Language en
 
Relation IOC Workshop Rep.. 142
 
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.
 
Publisher Intergovernmental Oceanographic Commission