Study of CO2 budget and ecosystem in the western North Pacific

西北太平洋二氧化碳收支与生态系统研究

• 批准号: 15310014
• 负责人: HATTORI Hiroshi
• 金额: $ 10.05万
• 依托单位: Hokkaido Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310014/
• 关键词: Phytoplankton pigments; HPLC; Oyashio; estern subarctic Pacific; Diatoms; Coccolith; 円石藻類; 西部北太平洋亜寒帯海域; 植物プランクトン; 種組成; 固有色素; 走査型電子顕微鏡; CHEMTAX

In order to evaluate CO2 budget and ecosystem in the western subarctic Pacific, seasonal change s in phytoplankton abundance were observed by means of phytoplankton pigment analysis and cell-count to understand the physiological influences on the abundance in the upper layer off Kushiro, western Subarctic Pacific. Diatoms (larger cell size) were most abundant in the phytoplankton assemblage measured by pigments throughout the year although chrysophytes (small sized cell) were become dominant by cell-count particulary at offshore site. This reveals that water temperature was lower at offshore site than the coastal site because of low temperature preference of chrysophytes.Seasonal changes in the carbon budget in the surface layer will be estimated near future because cell count is not completed yet on our whole samples.

为了评估亚北极太平洋西部海域的CO2收支和生态系统，采用浮游植物色素分析和细胞计数等方法，观测了浮游植物丰度的季节变化，以了解亚北极太平洋西部钏路海域上层浮游植物丰度的生理影响。在浮游植物组合中，硅藻（较大的细胞大小）在全年的色素测量中最为丰富，尽管从细胞数量上看，绿藻（较小的细胞）占主导地位，特别是在近海。这表明，由于绿藻对低温的偏好，近岸地点的水温低于近岸地点。表层碳收支的季节变化将在不久的将来进行估计，因为我们的整个样本的细胞计数尚未完成。

项目成果

Response of microzooplanktonto in-situ iron fertilization in the western subarctic Pacific (SEEDS)

亚北极西部太平洋微型浮游动物对原位铁施肥的响应 (SEEDS)

• 发表时间: 2005
• 期刊: Progress in Oceanography 64
• 作者: Saito;H.
• 通讯作者: H.

North Pacific east-west similarities and differences in nutrient and phytoplankton dynamics.

北太平洋东西向营养物和浮游植物动态的异同。

• 发表时间: 2004
• 期刊: JO 60
• 作者: Harrison;P.J.;A.Tsuda;H.Saito;F.Whitney;K.Tadokoro
• 通讯作者: K.Tadokoro

Saito, H., A.Tsuda: "Influence of light intensity on diatom physiology and nutrient dynamics in the Oyashio region."Progr.Oceanogr.. 57. 251-263 (2003)

Saito, H., A.Tsuda：“光强度对 Oyashio 地区硅藻生理学和营养动态的影响。”Progr.Oceanogr.. 57. 251-263 (2003)

Dynamics of trace metals during the subarctic Pacific iron experiment for ecosystem dynamics study(SEEDS2001)

用于生态系统动力学研究的亚北极太平洋铁实验期间微量金属的动态（SEEDS2001）

• 发表时间: 2005
• 期刊: Progress in Oceanography 64
• 作者: Kinugasa;M.
• 通讯作者: M.

Spawning season and migration of the myctophid fish Diaphus theta in the western North Pacific

• DOI: 10.1007/s102280300007
• 发表时间: 2003-02
• 期刊: Ichthyological Research
• 影响因子: 1.2
• 作者: M. Moku;A. Tsuda;K. Kawaguchi