Primary productivity in the fast ice area near syowa station,Antarctica, during spring and summer 1983/84 |
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Authors: | Hiroo Satoh Kentaro Watanabe |
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Institution: | (1) Tokyo University of Fisheries, Konan-4, Minatoku, 108 Tokyo;(2) National Institute of Polar Research, Kaga-1, Itabashi-ku, 173 Tokyo |
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Abstract: | In situ measurements of the primary productivity of ice algae and phytoplankton were carried out in the fast ice area near Syowa Station (69°00 S, 39°35 E) during the austral spring and summer of 1983/84. Standing stock of ice algae reached a maximum of 45.1 mg chla m–2 in late October. Phytoplankton standing stock attained a value of 3.57 mg chla m–2 in mid-January. Primary production of ice algae in late October (7.64 mgC m–2 hr–1) was 14 times greater than that in mid-January (0.54 mgC m–2 hr–1). Production in the water column in mid-January (3.46 mgC m–2 hr–1) was 50 times greater than that in late October (0.07 mgC m–2 hr–1). These results indicate a substantial production by ice algae in the spring and by phytoplankton in the summer period. |
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