Ozeanography, marine micropaleontology and genetics of benthic and planktonic foraminifera in the Artic environment of the Labrador Sea and Baffin Bay (MSM 9/2)

拉布拉多海和巴芬湾是海洋学上独特的地区。拉布拉多海是世界海洋中少数几个开放的深层对流发生的地点之一，而广泛的季节性海冰覆盖和夏季强烈的盐度分层使巴芬湾可能成为冰川高纬度海洋的最佳模拟。尽管有这种潜力，但我们对物理海洋学和海洋生物系统的了解，特别是它们之间的耦合，仍然是不完整的。巡航MSM09/2的生物和古海洋学方案将集中于收集数据和材料，以调查拉布拉多海和巴芬湾的主要代理载体浮游有孔虫的行为，并描述水文条件与浮游生物和底栖动物分布之间的联系。CTD模型水柱取样、浮游植物色素光学测定、浮游生物取样、过滤、分子遗传学和表层沉积物检索将为极地水域海洋水文学生态模型和新代用物的建立奠定基础。沉积物岩心将在主要位于巴芬湾的选定站点升起，作为在最后一次冰期循环期间测试该地区气候变化的新代用物的基础。

The Labrador Sea and Baffin Bay are oceanographically unique regions. The Labrador Sea is one of the few sites of the world ocean were open deep convection occurs, whilst extensive seasonal sea-ice cover and strong salinity stratification in the summer make the Baffin Bay potentially the best analog for glacial high-latitude oceans. Despite this potential, our knowledge of the physical oceanography and marine biological system, especially in terms of their coupling, remains patchy. The biological and paleoceanographical programme of cruise MSM09/2 will be focused on collection of data and material to investigate the behaviour of the main proxy carriers, planktonic foraminifera, in the Labrador Sea and Baffin Bay, and to characterise the links between hydrographic conditions and the distribution of living plankton and benthos. Water-column sampling by CTD casts, optical determination of phytoplankton pigments, plankton sampling, filtering, molecular genetics and retrieval of surface sediments will serve as a basis for development of ecological models and new proxies of surface-ocean hydrography in polar waters. Sediment cores will be raised at selected stations mainly in the Baffin Bay as a basis for testing the new proxies on climatic variations in the region during the last glacial cycle.