Creative enhancement of fish habitat based on fish school and microorganism behavior in eutrophic dam

(1)河流型鱼道中幼鱼的洄游行为本节旨在估计Denil、Steeppass、改良Larinier Pass和巨石安装斜坡鱼道中幼鱼的上游洄游行为。实验设施在水力实验室中使用了四种鱼道，并作为幼鱼：香鱼（plecoglossus altivelis）、虾虎鱼（chaenogobius urotaenia）、红点鲑（萨尔莫（Oncorhynchus）masou marcostamus）、鳟鱼（萨尔莫（Oncorhynchus）masou masou、萨尔莫（Oncorhynchus）masou marcostomus）。结果表明，香鱼幼鱼向湍流较弱的区域迁移，特别是沿等坡度鱼道的沿着逆流而上。此外，对于幼鳟鱼和红点鲑，他们可以选择的路线，根据自己的个人游泳潜力，横截面的速度分布在巨石安装的斜坡鱼道是广泛的。此外，有必要为虾虎鱼等底层鱼类提供休息区。(2)微生物B ...更多信息 本节旨在评估长良河口拦河闸河水和淤泥中细菌相的结构分析以及岐阜国立工业大学污水处理厂的好氧淹没生物过滤器。细菌相含有多种醌类化合物，如泛醌（UQ）、甲基萘醌（MK）和萘醌（PQ）。在污水处理厂好氧生物滤池中，甲基萘醌（MK）以细菌相为主。根据在长良河口拦河闸河水和淤泥中观察到的光合作用作用，研究了萘醌（PQ）。水质和生物指标如COD、叶绿素a、灼烧损失和物质直径与醌浓度成正比，与细菌数量成正比。(3)创造性地改善鱼类栖息地近年来，人们不仅从水流阻力的角度，而且从生态学的角度认识到河流和水坝中植被的重要性。对植被的水力作用，无论是限于银行和流，控制，碳的主要来源，水生系统。富含碳碎屑的河流为水生食物链提供了合适的基础。为了有效地从河岸区投放碎屑，应在“河段”尺度或更大尺度上进行设计。少

(1) Migrating behavior of juvenile fishes in stream-type fishways This section is intended estimate upstream migration behavior for juvenile fishes in Denil, Steeppass, modified Larinier Pass and boulder-mounted slope fishways. Experimental facilities have used four kinds of fishways in the hydraulic laboratory and as juvenile fishes : ayu (plecogllossus altivelis), goby (chaenogobius urotaenia), char (Salmo (Oncorhynchus) masou marcostamus), trout (Salmo (Oncorhynchus) masou masou, Salmo (Oncorhynchus) masou marcostomus). As a result, juvenile ayu migrated the regions where generated weak turbulence, especially they went upstream along side walls in constant slope fishway. Also, as for the juvenile trout and char, they can select the routes according to their individual swimming potential, as cross sectional velocity distributions in boulder-mounted slope fishways are wide range. Moreover, it is necessary to provide the resting area for the bottom fish such as goby.(2) Microorganism b … More ehavior in eutrophic dams This section is intended to estimate the structural analysis of bacterial phase in river water and mud at Nagara estuary barrage and aerobic submerged biofilter in sewage plant at Gifu National College of Technology. The bacterial phase have a variety of quinones such as ubiquinone (UQ), menaquinone (MK) and prastoquinone (PQ). In the case of aerobic submerged biofilter in sewage plant, the bacterial phase of menaquinone (MK) dominated. Prastoquinone (PQ) according to photosynthesis action observed in river water and mud at Nagara estuary barrage. The water quality and organism index such as COD, chlorophyl-a, ignition loss and diameter of substance are proportional to quinone concentration in connection with bacterial amounts.(3) Creative enhancement of fish habitat In recent years, the importance of vegetation in rivers and dams in recognized not only then viewpoint of flow resistance but also from the ecological viewpoint as soft interface. Hydraulic action on vegetation, whether limited to banks and in-stream, controls, a major source of carbon to aquatic systems. Stream that are rich in carbon detritus provide an appropriate base for the aquatic food chain. To be effective detrital delivery from riparian zones should be designed at the "reach" scale or larger. Less