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Smith, S.L. (1982). The northwestern Indian Ocean during the monsoons of 1979: distribution, abundance, and feeding of zooplankton. Deep Sea Research, Vol. 29. No. 11A 1331 - 1353.
6373
Smith, S.L.
1982
The northwestern Indian Ocean during the monsoons of: distribution, abundance, and feeding of zooplankton.
Deep-Sea Research, Part A, Oceanographic Research Papers
29(11):1331-1353.
Publication
Available in Wilson Copepod Library (non-digital)
Available for editors  PDF available [request]
Upwelling induced by the separation of the Somali Current from the coast of East Africa is associated with low surface temperature, high concentrations of nitrate, and blooms of phytoplankton. Coefficients of concordance, based upon 17 taxa of zooplankton collected at 33 stations in the southwest monsoon and 15 stations in the northeast monsoon were consistently larger for the southwest monsoon and indicative of a general response of the zooplankton in the north western Indian Ocean. The largest coefficients of concordance in the southwest monsoon were among adult females of Paracalanus denudatus, Paracalanus parvus and Paracalanus aculeatus and of Calanoides carinatus and Eucalanus spp. Coefficients of concordance among copepodids of six taxa had a trend similar to adult females in the southwest monsoon. During the southwest monsoon, total biomass of zooplankton was significantly greater within areas of upwelling than outside, adult females and copepodids of C. carinatus and Eucalanus spp. were significantly more abundant within the upwelling regions, along with adult females of Clausocalanus furcatus and Clausocalanus minor. The upwelling regions, which are associated with a reproductively active population of the large-bodied C. carinatus, are the primary features affecting distributions of zooplankton during the southwest monsoon and the main difference between monsoons. The ontogenetic migration of C. carinatus is essentially an annual life-history strategy and therefore on the same temporal scale as the reversals in the monsoonal winds and associated upwelling. The ability of C. carinatus to ingest readily the diatoms that dominate the upwelling regions and to store lipid is crucial to its dominance of the areas of upwelling both in numbers and biomass.
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Somali Exclusive Economic Zone for Acartia negligens Dana, 1849 
Somali Exclusive Economic Zone for Clausocalanus arcuicornis (Dana, 1849) 
Somali Exclusive Economic Zone for Clausocalanus farrani Sewell, 1929 
Somali Exclusive Economic Zone for Clausocalanus furcatus (Brady, 1883) 
Somali Exclusive Economic Zone for Clausocalanus minor Sewell, 1929 
Somali Exclusive Economic Zone for Clausocalanus parapergens Frost & Fleminger, 1968 
Somali Exclusive Economic Zone for Eucalanus crassus Giesbrecht, 1888 
Somali Exclusive Economic Zone for Paracalanus aculeatus Giesbrecht, 1888 
Somali Exclusive Economic Zone for Paracalanus denudatus Sewell, 1929 
Somali Exclusive Economic Zone for Paracalanus parvus (Claus, 1863) 
Somali Exclusive Economic Zone for Rhincalanus nasutus Giesbrecht, 1888 
Somali Exclusive Economic Zone for Undinula vulgaris (Dana, 1849) 
Somalia for Eucalanus Dana, 1852-1853