An Investigation of Mechanisms for the Formation of Methane in the Upper Ocean

上层海洋甲烷形成机制的研究

• 批准号: 9115681
• 负责人: Cindy Lee
• 金额: $ 6.7万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-11-01 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115681&HistoricalAwards=false
• 关键词: Investigation; Mechanisms; Formation; Methane; Upper

This research will investigate the mechanisms of methane formation in the upper water column. Dissolved methane profiles in the upper ocean are frequently characterized by a subsurface maximum. This maximum commonly coincides with the pycnocline and methane concentrations there are supersaturated with respect to atmospheric equilibrium. Methane peaks have been correlated with peaks in number of biological and chemical parameters including ATP, chlorophyll, zooplankton and particle concentrations. This study will specifically investigate the role of zooplankton feeding in the production of methane. Zooplankton will be fed with radio labelled algae and measure labelled methane production. Methods will also be developed to feed zooplankton individual labeled compounds which may be specific precursors of methane. The studies will lead to a better understanding of anaerobic processes in the oxic water column, provide information on digestive processes in zooplankton guts, and increase our knowledge of the cycling of methylamines and other C-1 compounds in seawater.

这项研究将调查上部水体中甲烷形成的机制。 上层海洋溶解甲烷剖面通常以地下最大值为特征。 该最大值通常与相对于大气平衡过饱和的比重斜层和甲烷浓度一致。 甲烷峰值与许多生物和化学参数的峰值相关，包括 ATP、叶绿素、浮游动物和颗粒浓度。 这项研究将专门研究浮游动物摄食在甲烷生产中的作用。 浮游动物将以无线电标记的藻类为食，并测量标记的甲烷产量。 还将开发方法来喂养浮游动物个别标记的化合物，这些化合物可能是甲烷的特定前体。 这些研究将有助于更好地了解含氧水柱中的厌氧过程，提供有关浮游动物肠道消化过程的信息，并增加我们对海水中甲胺和其他 C-1 化合物循环的了解。