New Zealand Journal of Marine and Freshwater Research abstracts

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Factors controlling summer phytoplankton production in greater Cook Strait, New Zealand

J. M. BRADFORD1 P. P. LAPENNAS2 R. A. MURTAGH2 F. H. CHANG1 V. WILKINSON3*

1Division of Marine and Freshwater Science Department of Scientific and Industrial Research P. O. Box 12346, Wellington North New Zealand
2Marine Sciences Research Center State University of New York Stony Brook, New York 11794 United States of America
3Botany Department Auckland University Private Bag, Auckland New Zealand

Abstract An intensive study was made of greater Cook Strait in the summers of 1980 and 1981 to determine the availability of dissolved inorganic nutrients in surface waters and the influence this may have on phytoplankton production. Phytoplankton biomass in greater Cook Strait appears to be controlled mainly by zooplankton grazing and turbulence or advection. The relative influence of factors governing primary production on phytoplankton distribution was assessed for the tidal mixing area off Marlborough Sounds, Manawatu River water, the Kahurangi Point to Cape Farewell upwelling region, and eastern Cook Strait.

Keywords Cook Strait; New Zealand; upwelling; tidal mixing; phytoplankton; chlorophyll a; primary production; temperature; salinity; nitrate; nutrients

New Zealand Journal of Marine and Freshwater Research, 1986, Vol. 20: 253-279 Received 12 June 1985; accepted 16 October 1985

PDF file of entire paper: medium quality (2373K); (scanned from paper original: notes about this process)

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