Ecosystem and Oceanographic Structure in the Indian Sector of the Antarctic Ocean

T/V Umitaka-Maru在2002/03年、2004/05年和2005/06年澳大利亚夏季的印度南极海洋部门进行了三次巡航。调查地区包括Keruguelen Plateau和Wilkes以外的东区棚、Lutzow-Holm湾以外的Lutzow-Holm湾以外的Wilkes Land以及Luzow-Holm湾以外的地区。主要主题是Adelie土地上形成的深水循环、表面生态系统与物理和化学环境之间的关系以及表面生态系统与中观生态系统之间的关系。水文观测是通过使用船舶装载ADCP、CTD和LADCP进行的，并从各种深度对宏观营养和痕量金属分析进行采样的。生物光学观测，对初级生产和表面植物浮游酮和动物浮游酮集合的测量，由浮游酮网络和中间体组织由多种开放/封闭的轨道也是如此。气溶胶观测活动已从卢佐-霍尔姆湾运送出来，与那些苍蝇一起 ... More 在Showa站。一个连续的普朗克录音机在从每个港口巡航到观察区域，用于研究在表面普朗克社区的长期变化中与R/V Aurora Australis和R/V Shirase的样本组合中收集的样本。直到现在，关于以下主题的论文已经出版：在阿德里亚土地外形成的路径和体积; on the remote sensing servations of edies and chlorophyll and sea的年度变异性--围绕南极差异; on the parameters for precise estimation of Antarctic Krill biomass by quantitative echo-sounder。140 E Meridian与南极差异的发展和南极循环的平均值的指标的社区组成和生物量的年度间变化，以及一些结果将很快提交。对痕量金属、气溶胶和光合成颜料的分析仍然不受影响。Mesopelagic organisms have been sorted into major taxa and detailed studies are also still undergoing。Less（低）

Three cruises by T/V Umitaka-Maru were conducted in the Indian sector of the Antaractic Ocean in 2002/03, 2004/05, 2005/06 austral summer. Survey areas were the eastern shelf of Keruguelen plateau and off Wilkes Land, off Lutzow-Holm Bay and off Wilkes Land and off Luzow-Holm Bay, respectively. Main themes were the circulation of deep water formed off Adelie Land, the relationships between surface ecosystems and physical and chemical environments and the relationships between surface ecosystems and mesopelagic ecosystems. Hydrographic observations were conducted by using ship mount ADCP, CTD and LADCP, and seawater was sampled from various depths for macro-nutrient and trace metal analyses. Bio-optical observations, measurements of primary production and collections of surface phytoplankton and zooplankton by a plankton net and mesopelagic organisms by a multiple opening/closing trawl were also conducted. Aerosol observations were carried out off Luzow-Holm Bay, coincide with those fro … More m the Showa Station. A Continuous Plankton Recorder was towed during cruising from each port to observation area for the study on the long term change of surface plankton communities in combination with samples collected by R/V Aurora Australis and R/V Shirase.Until now, papers on following topics have been published : on the pathway and volume of deepwater formed off Adelie Land ; on the remote sensing observations of eddies and annual variability of chlorophyll and sea-ice around the Antarctic Divergence ; on the parameters for precise estimation of Antarctic Krill biomass by quantitative echo-sounder. Inter-annual changes in community composition and biomass of zooplankton along 140゜E meridian related to the development of the Antarctic Divergence and the meander of the Antarctic Circumpolar Current were elucidated and some of the results will be submitted soon. Analyses of trace metals, aerosols and photosynthetic pigments are still undergoing. Mesopelagic organisms have been sorted into major taxa and detailed studies are also still undergoing. Less