Abnormal water temperature downstream dam construction and its effects on river biota in some Japanese rivers.

日本部分河流下游大坝建设水温异常及其对河流生物群的影响.

• 批准号: 15510033
• 负责人: MURAKAMI Tetuo
• 金额: $ 2.5万
• 依托单位: Nagoya Women's University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510033/
• 关键词: primary production; the Kiuma Ricer; water temperature; aquatic insect; dam; freshwater Rhodophyta; the Tenryu River; the Hida River; 一次生産者

Effects of dam construction on biota in its lower reaches were studied in some Japanese rivers such as the Tenryu,(Shizuoka Pref.), the Hida (Gifu Pref) and the Kuma (Kumamoto Pref) Rivers.For species composition of primary producer, effects of low temperature water originating from upper dam impoundment on distribution of freshwater Rhodophyta was detected. Biomass of attached algae in riverbed was increased in summer just downstream dam construction, though maximum algal biomass was recorded in winter in reference rivers without such constructions. On the other hand, no significant difference of primary production rate was detected between rivers with dams and without such constructions.Density of aquatic insects, except for Chironomidae (diptera), down reaches dam impoundments was low through the year in contrast with reference rivers. Both concentration and loading of particulate organic matte originated from dam impoundment were rapidly decreased longitudinally along the stream. Based on the observations of dominance of Trichoptera with net and of the content of their guts, consumption by aquatic insects contributed to decrease of organic matter.The species composition of algae in guts of P1aoglossus altivelis which feed on attached algae showed significant difference between rivers with dam and that without such constructions. Filamentous Cyanophyta especially Homeothrix janthina in former and diatoms in latter were detected respectively Index of fatness (weight/(body lengths)^3 X 1,000) of P. altivelis in reference rivers were larger than that in a river with dam constructions.

在一些日本河流中研究了大坝建设对BIOTA在其下游的影响，例如Tenryu（Shizuoka Pref。），HIDA（Gifu Pref）和Kuma（Kumamoto Pref）河流。对于主要生产国的物种组成，低温水的影响来自上坝的低温水对淡淡的水坝的影响，对淡淡的淡淡的淡淡的淡淡的淡淡的水dablement from flossignwater rhodwater rhodophophyta contection。夏季，河床附着的藻类的生物量就增加了下游大坝的结构，尽管在没有这种建筑的参考河流中记录了最大的藻类生物量。另一方面，在河流之间没有大坝和没有这种结构的河流之间的一级生产率。围起来的颗粒有机哑光的浓度和负载沿河流纵向迅速降低。基于对净翅目与净和胆量含量的优势的观察，水生昆虫的消费有助于减少有机物。藻类在p1aoglossus altivelis肠中藻类的物种组成，这些物种以Altivelis的胆量为食，这些藻类以附着的藻类为食而表现出与摩尔河之间的巨大差异，而没有这种结构。丝状氰基氏菌，尤其是前者中的硅藻，分别检测到后者的硅藻，分别检测到参考河中的脂肪（体重/体长）^3 x 1,000）的含量（体重/（体长）^3 x 1,000）比带有大坝结构的河流大于河流。

项目成果

村上哲生他: "ダム湖の陸水学"生物研究社(印刷中). (2004)

Tetsuo Murakami 等人：“水坝湖的湖沼学”Biokenkyusha（出版中）（2004 年）。

東幹夫, 程木義邦, 高橋勇夫: "球磨川流域におけるアユ仔魚の流下と中流ダムの影響"日本自然保護協会報告書. 94. 21-30 (2003)

Mikio Higashi、Yoshikuni Hoduki 和 Isao Takahashi：“球磨河流域香鱼幼虫的流动和中流水坝的影响”日本自然保护协会报告 94. 21-30 (2003)。

感潮域のプランクトン群集;起源,挙動,及び河口堰が群集に及ぼす影響

潮汐区浮游生物群落的起源、行为以及河口堰对群落的影响

• 发表时间: 2004
• 期刊: 関西自然保護機構会誌 26・2
• 作者: Murakami;T.;村上哲生
• 通讯作者: 村上哲生

感潮域のプランクトン群集;起源,挙動及び河口堰が群集に及ぼした影響

潮汐区浮游生物群落的起源、行为以及河口堰对群落的影响

• 发表时间: 2004
• 期刊: 関西自然保護機構会誌 26・2
• 作者: 村上哲生;池田ゆう子;出丸志帆;梶川育美;寺田寿世;服部典子;村上哲生
• 通讯作者: 村上哲生

Feature of aquatic insect communities just downstream of dam impoundment.

大坝蓄水下游水生昆虫群落特征。

• 发表时间: 2005
• 期刊: Journal of Nagoya Women's University, Home Economics Natural Science (in Japanese with English abstract) 51
• 作者: Murakami;T.;Ikeda;Y.;Idemaru;S.;Kajikawa;I.Terada;H.;Hattori;N.
• 通讯作者: N.