Understanding the night ecology of poisonous blue-green algae and its application to good-quality water intake system

了解有毒蓝绿藻的夜间生态及其在优质取水系统中的应用

• 批准号: 24656310
• 负责人: MAKINO Ikuyo
• 金额: $ 2.41万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24656310/
• 关键词: アオコ; 夜間計測; 良水取水; Microcystis; 良水取水システム; 夜間生態環境

In the nocturnal observation conducted during August and September, small lumps of bloom stayed at a fixed depth of water between 2 and 4 a.m. without any particular motion. Blooms on the water surface started to disperse starting around 2 p.m. and they are observed only scarcely on the surface by 4 p.m. Such cycle was observed every day until late September. The rhythm of this cycle indicates that behavior of photosynthetic algae cannot be explained only by photo-taxis. We could find that bloom goes down under water during night time and stays at a certain depth during certain period. However, we could not create good-quality water intake system to intake raw water of a good quality. To realize this, the following key issues need to be addressed: 1. Vertical motions spanning a few months through the initial phase to decline phase of bloom forming; 2. Determination of the toxicity of metabolite excreted by bloom forming algae; 3. Cell behavior after the decomposition of bloom.

在8月和9月进行的夜间观察中，小块水华在凌晨2点到4点之间停留在固定的水深。没有任何特别的动作。从下午2点左右开始，水面上的水华开始消散。直到下午4点，它们才在表面上几乎看不到。这样的周期每天都在观察到，直到9月下旬。这一周期的节律表明，光合藻的行为不能仅用趋光性来解释。我们可以发现，水华在夜间潜入水下，并在一定时期内停留在一定的深度。然而，我们无法创造出优质的取水系统来获取优质的原水。要实现这一点，需要解决以下关键问题：1.通过水华形成的初始阶段到下降阶段的几个月的垂直运动；2.水华形成藻类分泌的代谢物的毒性测定；3.水华分解后的细胞行为。

项目成果

湖の藍藻発生に及ぼす水温と貯水量の影響

水温和蓄水量对湖泊蓝藻发生的影响

• 发表时间: 2013
• 作者: 神田尊貴;牧野育代;矢作裕司
• 通讯作者: 矢作裕司

Relationship between growing number of river water quality and cyanobacteria by blue-green in lake

河流水质增长与湖泊蓝绿藻数量的关系

• DOI: 10.11162/daikankyo.14g0102
• 发表时间: 2014
• 期刊: Journal of Environment and Safety
• 作者: 吉野 寛之;末永俊和;寺田昭彦;藤井忠弘;野々口稔;細見正明;牧野育代,矢作裕司
• 通讯作者: 牧野育代,矢作裕司

Water quality change studies of upstream areas with leisure facility

上游休闲设施区水质变化研究

• DOI: 10.11162/daikankyo.13g0603
• 发表时间: 2013
• 期刊: Journal of Environment and Safety
• 作者: Takemura;Y.;Sekiguchi;Y.;Harada;H. and Kubota;K.;竹村泰幸，久保田健吾，関口勇地，原田秀樹;牧野育代,矢作裕司
• 通讯作者: 牧野育代,矢作裕司

受熱期の貯水池流入部における成層形成が光合成藻類の増殖に及ぼす影響

受热季水库入口层结对光合藻类生长的影响

• 发表时间: 2014
• 作者: 冨田周作;牧野育代;矢作裕司
• 通讯作者: 矢作裕司

Impact of warm water in upstream on water quality of headwaters reservoir

上游暖水对水源库水质的影响

• 发表时间: 2013
• 作者: Ikuyo Makino;Yuji Yahagi
• 通讯作者: Yuji Yahagi