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Estimates of high absolute densities and emergence rates of demersal zooplankton from the Agatti Atoll, Laccadives
Author(s) -
Madhupratap M.,
Achuthankutty C. T.,
Sreekumaran Nair S. R.
Publication year - 1991
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1991.36.3.0585
Subject(s) - demersal zone , water column , zooplankton , oceanography , atoll , sunset , stratum , sampling (signal processing) , environmental science , fishery , biology , geology , pelagic zone , paleontology , physics , reef , astronomy , detector , optics
Direct sampling of the sandy sub stratum of the Agatti Lagoon with a corer showed the presence of very high densities of epibenthic forms. On average, densities were about 25 times higher than previously estimated with emergence traps. About 80% of the organisms migrated into the water column within an hour after sunset, and maximal resettlement occurred soon after dawn.