Dynamic evaluation of boreal aquatic ecosystems assessed by nitrogen isotope and food web structure

氮同位素和食物网结构对北方水生生态系统的动态评价

• 批准号: 21340163
• 负责人: MINAGAWA Masao
• 金额: $ 11.56万
• 依托单位: Hokkaido 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-21340163/
• 关键词: 窒素循環; 脱窒; 窒素安定同位体; 食物網; 石狩川; 湖沼; オオクチバス; 生態撹乱生物; 窒素同位体; 食物連鎖; 移入動物; 栄養段階; 水圏生態系; 河川水系; 富栄養化; 窒素収支; 富山

To evaluate stability of aquatic ecosystems which are disturbed by interference such as by immigrant biota or by eutrophication, we studied and evaluated here stable nitrogen isotope proxies as a likely indicator assessing the state of nitrogen cycling and food chain structure of an ecosystem. Based on field works at Ishikari river water shed where it has been concerned about large discharge of anthropogenic nitrogenous compounds, and many dam ponds distributed in Toyama prefecture as being concerned about ecological disturbance by large-mouth bass recently. The nitrogen isotope analysis has been clarified as a useful and promising indicator to evaluate environmental problems occurring in ecology and/or nutrient cycling even though based on only snapshot observations.

为了评价受到外来生物干扰或富营养化干扰的水生生态系统的稳定性，我们研究和评价了稳定的氮同位素代用品，作为评估生态系统氮循环状态和食物链结构的一个可能的指标。基于石川江流域的实地工作，该流域一直担心人为氮化合物的大量排放，以及最近因担心大口黑鱼对生态的干扰而分布在富山县的许多堤坝池塘。氮同位素分析已被阐明为评估生态和/或养分循环中发生的环境问题的一个有用和有前途的指标，即使只基于快照观测。

项目成果

Shore level differences in barnacle (Chthamalus dalli) recruitment relative to rock surface topography

与岩石表面地形相关的藤壶 (Chthamalus dalli) 募集的海岸水平差异

• 发表时间: 2010
• 期刊: Journal of Experimental Marine Biology and Ecology
• 影响因子: 2
• 作者: D. M. Munroe;T. Noda;T. Ikeda
• 通讯作者: T. Ikeda

Study of denitrification process in Ishikari river system, Hokkaido

北海道石狩川水系反硝化过程研究

• 发表时间: 2010
• 作者: P. K. Jha;M. Minagawa
• 通讯作者: M. Minagawa

Seasonality in the strength and spatial scale of processes determining intertidal barnacle oopulation growth.

决定潮间带藤壶产卵生长的过程的强度和空间规模的季节性。

• 发表时间: 2010
• 期刊: Journal of Animal Ecology
• 影响因子: 4.8
• 作者: 野田隆史;他4名
• 通讯作者: 他4名

動座標系で考える生物地球化学のすめ

如何使用动态坐标系考虑生物地球化学

• 发表时间: 2011
• 作者: 増川恭子;林謙一郎;西尾嘉朗;南川雅男
• 通讯作者: 南川雅男

Physical and biological factors contributing to changes in the relative importance of recruitment to population dynamics.

物理和生物因素导致招募对人口动态的相对重要性发生变化。

• 发表时间: 2010
• 期刊: Marine Ecology Progress Series
• 影响因子: 2.5
• 作者: Muromachi;Y.;太田邦史;Munroe DM
• 通讯作者: Munroe DM