The role of salps for carbon export in Southern Ocean - Does surface phytoplankton distribution reflect salp export potential?

樽海鞘在南大洋碳出口中的作用 - 表面浮游植物分布是否反映了樽海鞘出口潜力？

• 批准号: 128081120
• 负责人: Dr. Ilka Peeken
• 金额: --
• 依托单位: Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum für Polar- und Meeresforschung
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/128081120?language=en
• 关键词: role; salps; carbon; export; Southern

Salps are an important mediator of the downward transport of organic carbon in the Southern Ocean as they produce high quantities of densely packed faecal pellets which rapidly sink through the water column. The current project focuses on the quality and quantity of exported material of the two Southern Ocean salps, Salpa thompsoni and Ihlea racovitzai in response to regional and seasonal food conditions. By investigating their gut content with marker pigment analysis, microscopic examination and carbon measurements, particularly in regard to digestion and digestion efficiency, ingestion and egestion of the salps will be determined for varying natural diets. This study will be enlarged by information on phytoplankton assemblages and satellite chlorophyll concentrations and on salp distribution for different seasons and several regions of the Southern Ocean, and will enable us to define the role of salp feeding in structuring Antarctic pelagic ecosystems and their impact on carbon transfer in the Southern Ocean.

盐分是南大洋有机碳向下运输的重要媒介，因为它们产生大量密集堆积的粪便颗粒，这些颗粒迅速通过水柱下沉。目前的项目侧重于根据区域和季节性粮食条件，对两种南大洋盐类Salpa thompsoni和Ihlea racovitzai的出口材料的质量和数量作出反应。通过用标记色素分析、显微镜检查和碳测量来调查它们的肠道内容物，特别是关于消化和消化效率，将确定不同天然饮食对盐类的摄入量和排泄量。这项研究将扩大关于浮游植物组合和卫星叶绿素浓度以及关于不同季节和南大洋几个区域的盐分分布的信息，并将使我们能够确定盐分摄取在构建南极远洋生态系统方面的作用及其对南大洋碳转移的影响。