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MEPS 175:227-239 (1998)
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Abstract
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Seasonal photoadaptation and diatom dynamics in temperate waters
Niall Broekhuizen1,*, Mark Hadfield2, Arnold H. Taylor3
1National Institute of Water & Atmospheric Research Ltd, PO Box 11-115, Gate 10, Silverdale Road, Hamilton, New Zealand
2National Institute of Water & Atmospheric Research Ltd, PO Box 14-901, 301 Evans Bay Parade, Greta Point, Wellington, New Zealand
3Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, United Kingdom
*E-mail: n.broekhuizen@niwa.cri.nz
ABSTRACT: Using a fully depth-resolved nutrient-phytoplankton model we investigate the influence that photoadaptive responses may have upon the seasonal dynamics of diatoms in the subtropical waters to the east of New Zealand. The wintertime diatom
standing stocks can differ by up to 2 orders of magnitude depending upon the form of photoadaptive response assumed. As a consequence of this difference in wintertime stocks, the timing of the spring bloom varies by almost 1 mo. The spring bloom is
terminated by N limitation rather than by Si limitation.
KEY WORDS: Phytoplankton · Overwintering · Modelling · Photoadaptation
Published in MEPS Vol.
175
(1998) on December 17
ISSN: 0171-8630.
Copyright © Inter-Research, Oldendorf/Luhe, 1998
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