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Barlow, R., Lamont, T., Mitchell-Innes, B., Lucas, M. and Thomalla, S. 2009. Primary production in the Benguela ecosystem, 1999–2002. African Journal of Marine Science, 31(1): 97-101


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Primary production in the Benguela ecosystem, 1999–2002.

Summary / Notes:

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. Keywords: chlorophyll a, primary production, temperature.

Year: 2009

Type: Journal Article

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