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  • 标题:Environmental conditions, particle flux and sympagic microalgal succession in spring before the sea-ice break-up in Adélie Land, East Antarctica
  • 作者:Catherine Riaux-Gobin ; Gerhard S. Dieckmann ; Michel Poulin
  • 期刊名称:Polar Research
  • 印刷版ISSN:1751-8369
  • 出版年度:2013
  • 卷号:32
  • DOI:10.3402/polar.v32i0.19675
  • 语种:English
  • 出版社:Co-Action Publishing
  • 其他摘要:Data pertaining to environmental conditions, sympagic (sea ice) microalgal dynamics and particle flux were collected before the spring ice break-up 2001 in Pierre Lejay Bay, adjacent to the Dumont d'Urville Station, Petrel Island, East Antarctica. An array of two multiple sediment traps and a current meter was deployed for five weeks, from 8 November to 6 December 2001. The sea-ice chlorophyll a and particulate organic carbon (POC) averaged 0.6 mg l−1 (30 mg m−2) and 20 mg l−1 (1 g m−2) near the coast. The POC export flux that reached a maximum of 79 mg m−2 d−1 during the study period was high compared to the one for the Weddell Sea. The flux was homogeneous from the surface to 47 m depth and increased sharply 33 days before the effective ice break-up. A north-western progressive vector of currents (i.e., Lagrangian drift) in the sub-ice surface waters was demonstrated. Bottom ice, platelet ice and under-ice water at 5 m were characterized by differences in colonization and short-term succession of microalgae.
  • 其他关键词:land-fast ice;oceanic short-term regime;POM flux;sympagic communities;East Antarctica
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