COMPARATIVE IMPACT OF IN SITU UV EXPOSURE ON PRODUCTIVITY, GROWTH AND SURVIVAL OF ANTARCTIC PHAEOCYSTIS AND DIATOMS (15th Symposium on Polar Biology)
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概要
- 論文の詳細を見る
Depletion of stratospheric ozone over Antarctica enhances UV-B (280-320 nm) radiation reaching the Earth's surface during spring. UV-B influences the growth and survival of marine phytoplankton. The near surface UV irradiance, in situ growth and primary production of the prymnesiophyte Phaeocystis c.f. pouchetii (HARIOT) LAGERHEIM and three diatoms were measured during UV exposure. Survival, growth and cell diameter were also determined after exposure. The flagellate stage in the life cycle of Phaeocystis was the only organism examined that suffered mortality as a result of natural UV exposure, however, UV-A (320-400 nm) was responsible for most of this mortality. Interspecific differences in production, cell concentration and growth were observed at sublethal irradiances. Such differences may lead to changes in phytoplankton species composition.
- 国立極地研究所の論文
著者
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Davidson Andrew
Australian Antarctic Division
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Marchant Harvey
Australian Antarctic Division
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Davidson Andrew
Australian Antarctic Division Channel Highway
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Davidson Andrew
Australia Antarctic Division Channel High Way Kingston
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