Downward fluxes of fatty acids and hydrocarbons during a phytoplankton bloom in the austral summer in Breid Bay, Antarctica

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• 作者：Hayakawa ; Kazuhide ; Handa ; Nobuhiko ; Ikuta ; Naoko ; Fukuchi ; Mitsuo
• 关键词：sinking particles ; time-series sediment trap ; the Antarctic Ocean ; hydrocarbons ; fatty acids ; diatom bloom
• 刊名：Organic Geochemistry
• 出版年：1996
• 期刊代码：40_01466380
• 类别：pw
• 出版时间：May, 1996
• 卷：24
• 期：5
• 页码：511-521
• 文件大小：796 K

摘要

Vertical fluxes of fatty acids and hydrocarbons were measured in sinking particles collected by a time-series sediment trap in Breid Bay, Antarctica during the austral summer December 1985 to February 1986. Temporal variations in fatty acid fluxes were related to changes in growth of the overlying diatom population. High contents of 21:6 alkenes and 14:0, 16:0, 16:1, 20:5 acids of the sinking particles supported the idea that the source of the sinking organic matter was mainly diatoms. 21:6 Alkenes and 20:5 acids increased in the late exponential phase of the overlying diatom bloom. Branched C₂₅ alkenes were detected in the sinking particles.