Analysis of the high productivity mechanism of sea ice ecosystem

海冰生态系统高生产力机制分析

• 批准号: 09308019
• 负责人: TAKAHASHI Masayuki
• 金额: $ 22.66万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09308019/
• 关键词: sea ice ecosystem; ice algae; brine channel; Saroma-ko Lagoon; Sea of Okhotsk; sediment trap; zooplankton; organic matter production; 海水生態系; アイス-アルジ-; プライン・チャネル; アイス・アルジ-

Sea ice ecosytem is believed to play an important role for maintaining the present environment of the earth because of its significant share percentage of ca 10 % of the world ocean as well as it unique structure and function closely associated with the characteristics of sea ice. The coast of the Sea of Okhotsk along the Japanese Islands is the southern most area where sea ice develops on the earth. The present study is dealing with the analyzes of possible role of various organisms in a given sea ice ecosystem in particular emphasis on the development of sea ice by mostly field experiments in Saroma-ko Lagoon and partly in the Sea of Okhotsk. Major results obtained are, 1) detail analyzes of physical processes in forming sea ice and associated biological processes, 2) evaluation of algal species incorporating into sea ice and their photosynthetic activities within the ice in association with unique sea ice environmental conditions, 3) evaluation of food web structure of sea ice ecosystem and an estimate of qualitative and quantitative contribution of ice algae, 4) analysis of sea ice development and its effects on particle sedimentation, and 5) evaluation of characteristics of the entire sea ice ecosystem. These results obtained deepened our understanding of sea ice and of sea ice ecosystem both its structure and function as well as supplying important knowledge for speculating future earth environment by use of air-ocean dynamic models. Most results obtained have been published in international scientific journals and presented at many international and domestic meetings.

海冰生态系统占世界海洋的10%左右，其独特的结构和功能与海冰的特征密切相关，因此被认为对维持地球当前的环境具有重要作用。沿日本列岛的鄂霍次克海沿岸是地球上海冰形成的最南端。本研究主要分析各种生物在某一特定海冰生态系统中可能发挥的作用，特别强调通过在萨罗马科泻湖和部分在鄂霍次克海进行的实地实验来研究海冰的形成。取得的主要成果有：1)详细分析了海冰形成的物理过程和相关的生物过程；2)评价了独特海冰环境条件下融入海冰的藻类及其在冰内的光合作用；3)评价了海冰生态系统的食物网结构，并估计了冰藻的定性和定量贡献。4)分析海冰发育及其对颗粒沉积的影响；5)评价整个海冰生态系统的特征。这些结果加深了我们对海冰和海冰生态系统结构和功能的认识，并为利用海气动力学模式推测未来地球环境提供了重要的知识。获得的大部分成果已在国际科学期刊上发表，并在许多国际和国内会议上发表。

项目成果

Kawamura,T. et al.: "Time series observations of the structure and properties of brakish ice in the Gulf of Finland. the Baltic Sea"Annals of Glaciol.. 33(印刷中). (2001)

Kawamura, T. 等人：“波罗的海芬兰湾微咸冰的结构和特性的时间序列观测”《冰川年鉴》.. 33（出版中）。

Shirasawa, K., Saloranta, T. and Lepparanta, M.: "On the modeling of the thickness climatology for the coastal ice in the Sea of Okhotsk"Proceeding of the 15th Intl. Symp. Okhotsk Sea & Sea Ice. 121-127 (2000)

Shirasawa, K.、Saloranta, T. 和 Lepparanta, M.：“鄂霍次克海沿岸冰厚度气候学建模”第 15 届国际会议论文集。

Kawamura, T., K. Shirasawa, N. Ishikawa, A. Lindfors, K. Rasmus, M. Lapparanta: "Sea Ice Observation in the Pohja Bay, the Gulf of Finland-Effect of Salt on Ice structure"Proc. 15th Intl. Symp. Okhotsk Sea & Sea Ice. 301-309 (2000)

Kawamura，T.，K. Shirasawa，N. Ishikawa，A. Lindfors，K. Rasmus，M. Lapparanta：“芬兰湾波赫亚湾海冰观测 - 盐对冰结构的影响”Proc。

Ishikawa, N., A. Takizawa, T. Kawamura, K. Shirasawa and M. Lapparanta: "Changes of the radiation property with sea ice growth in Saroma-Lagoon and the Baltic Sea"Proc. 15th Intl. Symp. Okhotsk Sea & Sea Ice. 310-320 (2000)

Ishikawa, N.、A. Takizawa、T. Kawamura、K. Shirasawa 和 M. Lapparanta：“佐吕间泻湖和波罗的海海冰生长导致的辐射特性变化”Proc。

Niimura, Y., T.Ishimaru, S.Taguchi.: "Initial incorporation of phytoplankton into the new sea ice in Saroma-ko lagoon, Hokkaido, Japan"Polar Biosci,. 13. 15-27 (2000)

Niimura, Y.、T.Ishimaru、S.Taguchi.：“浮游植物最初融入日本北海道 Saroma-ko 泻湖的新海冰”Polar Biosci，。