Phytoplankton changes effected by anxious water of enclosed

封闭水域急水对浮游植物的变化

• 批准号: 21340153
• 负责人: MATSUOKA Kazumi
• 金额: $ 10.73万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21340153/
• 关键词: 貧酸素水塊; 栄養塩溶出; 植物プランクトン; 大村湾; メソコスム; セディメントトラップ; 渦鞭毛藻; 珪藻; 表層堆積物; 閉鎖系海域

In order to understand a relation between phytoplankton floral change and nutrient supply, investigations of formation of anoxic environments, mechanisms of nutrient supply, and distribution of nutrients were carried out in Omura Bay, West Kyushu, Japan. Results were follows ; intrusion of dense seawater forms stratification at the center basin, and then anoxic water is produced by microbial respiration. Under anoxic environments, NH_4 and PO_4 are selectively dissolved from organic-enriched bottom sediments. In a mesocosm experiment where we produced an anoxic condition artificially, a floral change from diatoms to dinoflagellates occurred after selective regeneration of NH^+_4 and PO^<3->_4. Historical change of dinoflagellate cysts recorded in core sediment of Omura Bay suggests that eutrophication reflected by increase of heterotrophic dinoflagellate cysts appeared around 1970s.

为了了解浮游植物区系变化和营养盐供应之间的关系，在日本九州西部的大村湾进行了缺氧环境的形成、营养盐供应机制和营养盐分布的调查。结果如下：密集海水的侵入在中心盆地形成分层，然后通过微生物呼吸作用产生缺氧水。在缺氧环境下，NH_4和PO_4选择性地从富含有机质的底质中溶解。在一个我们人工制造缺氧环境的围隔实验中，经过NH^+_4和PO^ _4的选择性再生后，硅藻的花型发生了向甲藻的转变<3->。大村湾柱状沉积物中甲藻孢囊的历史变化表明，20世纪70年代左右出现了由异养甲藻孢囊增加反映的富营养化。

项目成果

Microbial community respiration and structure of dead zone sediments of Omura Bay

大村湾死区沉积物微生物群落呼吸和结构

• 期刊: Japan. Journal of Oceanography
• 作者: Wada;M;Suzuki;S;Nara;T;Umezawa;Y;Shimanaga;M.;Matsuoka;M;Nakata;H
• 通讯作者: H

A comparative study between Prorocentrum shikokuense and P.donghaiense (Prorocentrales, Dinophyceae) based on morohology and DNA sequences

基于形态学和DNA序列的四国原甲藻和东海原甲藻（甲藻纲原甲藻）的比较研究

• 发表时间: 2011
• 期刊: Plankton & Benthos Research
• 影响因子: 0.6
• 作者: Yoshihito Takano;Kazurai Matsuoka
• 通讯作者: Kazurai Matsuoka

Reconstruction of historical nutrient levels in Korean and Japanese coastal areas based on dinoflagellate cyst assemblages

基于甲藻包囊组合重建韩国和日本沿海地区历史营养水平

• 发表时间: 2010
• 期刊: Marine Pollution Bulletin
• 影响因子: 5.8
• 作者: Shin;H-H;Mizushima;K.;Seok Jin Oh;S-J.;Park;J-S.;Noh;I-H;Iwataki;M.;Matsuoka;K.;Yoon;Y-H
• 通讯作者: Y-H

Phylogenetic subdivision of the genus Protoperidinium,(Peridiniales, Dinophyceae) with special emphasis of the Monovela Group

Protoperidinium 属（Peridiniales，Dinophyceae）的系统发育细分，特别强调 Monovela Group

• 期刊: J. Micropaleontol(Dino9 volume)
• 作者: Matsuoka;K;Kawami;H
• 通讯作者: H

Dynamics of respiratory-active bacterioplankton in hypoxia as revealed by flow cytometry

流式细胞术揭示缺氧条件下呼吸活性浮游细菌的动态

• 发表时间: 2011
• 作者: Yuka Ohtake;Minoru Wada
• 通讯作者: Minoru Wada