Primary productivity and chlorophyll a in Prydz Bay and its mouth in Antarctica during the austral summer of 1999/2000

Zilin, Liu and Yuming, Cai and Xiuren, Ning and Chenggang, Liu and Genhai, Zhu and Xiaogu, Wang (2001) Primary productivity and chlorophyll a in Prydz Bay and its mouth in Antarctica during the austral summer of 1999/2000. Advances in Polar Science, 12 (1). pp. 53-62.

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Abstract

The investigation of phytoplankton standing stock, euphotic layer and photosynthesis rate were carried out in 19 - 27 of January, 2000 at three longitudinal sections (70°30'E. 73°00'E and 75°30'E). The results showed that the high value of chlorophyll a concentration was in inshore bay, polynya and the continental slope of the investigated sea area. At various investigated stations, average chlorophyll a concentration at sub-surface layer (25 m) was higher than that at surface layer; its concentration at the deeper layers of over 50 m decreased with increasing depth. At anchor station, the maximum chlorophyll a concentration appeared at surface layer in Antarctic summer's afternoon while the minimum value appeared in the morning; chlorophyll a concentration at water layer at 0 - 25 m was obviously higher than that at deep water layer, being related to the releasing of ice-algae. High productivity was in inshore bay and polynya of continental shelf. Chlorophyll a concentration at surface layer is closely correlated to the dissolved oxygen concentration in seawater. The sea area with chlorophyll a concentration of over 1.0 µg/dm(3) may be the convergence of CO2 and that of below 1.0 µg/dm(3) may be the source of CO2.

Item Type:	Article
Related URLs:
Keywords:	primary productivity, chlorophyll a, carbon dioxide, Prydz Bay, Antarctica.
Subjects:	Unspecified
Organizations:	Unspecified
Date Deposited:	02 May 2023 14:02
URI:	http://library.arcticportal.org/id/eprint/2216

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