Estimates of primary production by ice algae and phytoplankton in the coastal ice-covered area near Syowa Station, Antarctica
| Autor: | Hiroo Satoh, Kentaro Watanabe, Takao Hoshiai |
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| Jazyk: | English<br />Japanese |
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Antarctic Record, Vol 35, Iss 1, Pp 30-38 (1991) |
| Druh dokumentu: | article |
| ISSN: | 0085-7289 2432-079X |
| DOI: | 10.15094/00008709 |
| Popis: | Annual primary production of ice algae and phytoplankton under fast ice near Syowa Station (69°00′S, 39°35′E), Antarctica, was estimated. Mean daily production in each month from February 1983 to January 1984 was calculated with a mathematical model based on measured parameters of solar radiation, day length, attenuation coefficients of snow, ice and water, chlorophyll α standing stock, quantum yield for photosynthesis etc. Solar radiation measured at Syowa Station ranged from 0Em^h^ in June to 13.3Em^h^ in December. Relative light intensity estimated at the bottom of sea ice during the year ranged from 0 to 6.5% of incident solar radiation, due to attenuation with snow and ice. Maximum daily production of ice algae (34mgCm^(day)^) and phytoplankton (450mgCm^(day)^) was reached in December and in February, respectively. The estimated annual production of ice algae and phytoplankton was 3.5 and 17gCm^, respectively. These results indicate that summer phytoplankton production contributed remarkably to the primary production in the coastal ice-covered area near Syowa Station. |
| Databáze: | Directory of Open Access Journals |
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