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ESTIMATES OF TOTAL ZOOPLANKTON IN THE ZANZIBAR AREA OF THE INDIAN OCEAN WITH A COMPARISON OF THE RESULTS WITH TWO DIFFERENT NETS
Author(s) -
WICKSTEAD J. H.
Publication year - 1963
Publication title -
proceedings of the zoological society of london
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0370-2774
DOI - 10.1111/j.1469-7998.1963.tb06101.x
Subject(s) - hydrography , zooplankton , plankton , oceanography , environmental science , period (music) , volume (thermodynamics) , geography , mathematics , zoology , climatology , geology , biology , physics , quantum mechanics , acoustics
Total plankton from vertical samples is estimated in terms of numbers, volume and dry weight per m 3 . Three stations were sampled, by day and by night, over a period of thirteen months, using both a 58 m.p.i. and a 74 m.p.i. net clamped together. Three stations had total depths of 12, 40 and 750 m respectively. Some relevant and contemporary climatic and hydrographic factors are shown. The relative catches of the two nets are shown for all three measures and their relative catching ability is discussed.