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Primary production in the Benguela ecosystem, 1999–2002

Primary production in the Benguela ecosystem, 1999–2002 Phytoplankton production was investigated throughout the whole Benguela ecosystem in winter 1999 and in summer 2002 during two four-week research cruises from Cape Town, South Africa, through Namibian waters to Namibe in southern Angola. Primary production ranged from 0.14–2.26 g C m−2 d−1 during June–July 1999 and from 0.39–8.83 g C m−2 d−1 during February–March 2002. Mean productivity values indicated that the Benguela ecosystem was twice as productive in summer than in winter. In 1999, most of the productivity occurred within a temperature range of 13.5–18 °C, whereas in 2002 elevated production was associated with temperatures of 14–22 °C. The relationship between primary production and chlorophyll a was good for winter 1999 but poor for summer 2002, suggesting that predicting primary production from chlorophyll a is not straightforward for the Benguela ecosystem. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Journal of Marine Science Taylor & Francis

Primary production in the Benguela ecosystem, 1999–2002

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Primary production in the Benguela ecosystem, 1999–2002

Abstract

Phytoplankton production was investigated throughout the whole Benguela ecosystem in winter 1999 and in summer 2002 during two four-week research cruises from Cape Town, South Africa, through Namibian waters to Namibe in southern Angola. Primary production ranged from 0.14–2.26 g C m−2 d−1 during June–July 1999 and from 0.39–8.83 g C m−2 d−1 during February–March 2002. Mean productivity values indicated that the Benguela ecosystem was twice as...
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Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1814-2338
eISSN
1814-232X
DOI
10.2989/AJMS.2009.31.1.9.780
Publisher site
See Article on Publisher Site

Abstract

Phytoplankton production was investigated throughout the whole Benguela ecosystem in winter 1999 and in summer 2002 during two four-week research cruises from Cape Town, South Africa, through Namibian waters to Namibe in southern Angola. Primary production ranged from 0.14–2.26 g C m−2 d−1 during June–July 1999 and from 0.39–8.83 g C m−2 d−1 during February–March 2002. Mean productivity values indicated that the Benguela ecosystem was twice as productive in summer than in winter. In 1999, most of the productivity occurred within a temperature range of 13.5–18 °C, whereas in 2002 elevated production was associated with temperatures of 14–22 °C. The relationship between primary production and chlorophyll a was good for winter 1999 but poor for summer 2002, suggesting that predicting primary production from chlorophyll a is not straightforward for the Benguela ecosystem.

Journal

African Journal of Marine Science – Taylor & Francis

Published: Apr 1, 2009

Keywords: CHLOROPHYLL A; PRIMARY PRODUCTION; TEMPERATURE

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