Study on Hydraulic Environments and Fish Behavior in Agricultural Canals

农渠水力环境与鱼类行为研究

• 批准号: 14560201
• 负责人: HIRAMATSU Kazuaki
• 金额: $ 2.37万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14560201/
• 关键词: Irrigation and drainage canal; Hydraulic environment; Japanese Medaka; Environmental preference; Schooling behavior; Chaos engineering; Laboratory experiment; On-the-spot examination

For the preservation and restoration of ecosystems in agricultural canals, it is important to quantify not only the characteristics of preferable habitat such as water quality and hydraulic condition but also environmental preference of fish or wildlife. In this research, environmental preference of Japanese Medaka Fish (Japanese killifish, Oryzias latipes) and hydraulic environments in agricultural canals were investigated by laboratory experiments and on-the-spot examinations. Japanese Medaka Fish was selected as a river fish subject to this research because Japanese Medaka is now regarded as the symbolic fish for the restoration of countryside ecosystems in Japan.Judging from the hydraulic measurements in and around artificial blocks that are recently constructed for providing fish nest in agricultural canals, the three environmental factors of water depth, current velocity and cover were selected as the principal factors affecting the availability and quality of the fish habitat in … More agricultural canals. Based on the background that fish behavior is essentially noncommittal and that the behavioral responses to an environmental change vary widely among both individuals and circumstances, the preference intensities of Japanese Medaka to the three environmental factors were quantified by fuzzy logic modeling and laboratory open-channel experiments. A simple genetic algorithm was introduced to search for the optimal functional representation of preference intensity. The fuzzy-GA preference intensity model was then successfully verified by laboratory water-tank experiments and on-the-spot examinations. The good agreement between the predicted and observed distributions in considering the two factors of current velocity and cover indicated that the two factors obviously affected the environmental preferences of Japanese Medaka.For the purpose of evaluating the environment of fish habitat through the individual-based model approach, the schooling behavior of Japanese Medaka was analyzed to determine the interactions between individuals : the spacing between individuals, the spatial distribution of individuals and the communication processes. The behavioral pattern model was introduced to describe the behavior of fish schooling. The results of the numerical simulations using the model agreed with the experimental data in many regards, including the polarization, the nearest neighbor distance, the expanse and the fractal dimension.The differences of swimming behavior among individuals were also quantified by calculating return map, fractal dimension, correlation dimension and wavelet transform for swimming trajectory, swimming velocity and turning angle respectively The feasibility of the assessment for the degree of tension or rest of fish in specific environment and the fish-based biomonitoring for chemical contaminants in water environment was examined using the calculated results. Less

对于农业运河生态系统的保护和恢复，不仅要量化水质和水力条件等优选栖息地的特征，而且要量化鱼类或野生动物的环境偏好。在本研究中，日本青鳉鱼的环境偏好（通过实验室实验和现场检查，对日本青鳉鱼（Oryzias latipes）和农业运河的水力环境进行了调查，选择日本青鳉鱼作为研究对象，因为日本青鳉鱼现在被认为是日本的象征性鱼类。日本乡村生态系统的恢复。从最近在农运河中建造的人工鱼巢及其周围的水力测量来看，选择水深、流速和覆盖度三个环境因素作为影响鱼巢的主要因素。农业运河中鱼类栖息地的可用性和质量基于鱼类行为本质上是不明确的以及个体和环境对环境变化的反应差异很大的背景，日本青鳉对三个环境因素的偏好强度。被量化为引入简单的遗传算法来寻找偏好强度的最优函数表示，并通过实验室水箱实验和现场实验成功验证了模糊遗传算法偏好强度模型。考虑到海流速度和覆盖度两个因素，预测分布与观测分布具有良好的一致性，表明这两个因素明显影响日本青鳉的环境偏好。模型方法，日本青鳉的学校教育行为分析确定个体之间的相互作用：个体之间的间距、个体的空间分布和通信过程，引入行为模式模型来描述鱼群的行为，使用该模型进行的数值模拟的结果与该模型一致。通过计算游泳轨迹的返回图、分形维数、相关维数和小波变换，量化个体游泳行为的差异。分别为速度和转角利用计算结果检验了鱼类在特定环境下的紧张或休息程度评估以及基于鱼类的水环境化学污染物生物监测的可行性。

项目成果

平松 和昭: "ファジィ推論を用いたメダカの環境選好性の定量化"応用水文. 16. 18-27 (2003)

Kazuaki Hiramatsu：“利用模糊推理对青鳉的环境偏好进行量化”，《应用水文学》16. 18-27 (2003)。

平松 和昭: "ファジィ推論によるメダカの環境応答モデルの開発"農業土木学会論文集. 228. 65-72 (2003)

Kazuaki Hiramatsu：“利用模糊推理开发青鳉鱼的环境响应模型”日本农业土木工程师学会汇刊 228. 65-72 (2003)。

K.Hiramatsu, S.Fukuda, S.Shikasho: "Fuzzy Rule-based Quantification of Preference Intensity of Japanese Medaka for Instream Water Environment"Applied Hydrology. 16. 18-27 (2003)

K.Hiramatsu、S.Fukuda、S.Shikasho：“基于模糊规则的日本青鳉对河道水环境偏好强度的量化”应用水文学。

Hiramatsu, K.: "Experimental Study on the Fish Preference for Hydraulic Environments"Proceedings of the 2002 ASAE Annual International Meeting / CIGR XVth World Congress. Paper No.027004(CD収録). (2002)

Hiramatsu, K.：“鱼类对水力环境偏好的实验研究”2002 年 ASAE 国际年会 / CIGR 第十五届世界大会论文集，第 027004 号（含 CD）。

K.Hiramatsu, S.Fukuda, S.Shikasho: "Mathematical Modeling of Preference Intensity of Japanese Medaka for Instream Water Environment using Fuzzy Inference"Transactions of the Japanese Society of Irrigation, Drainage, and Reclamation Engineering. 228. 65-72

K.Hiramatsu、S.Fukuda、S.Shikasho：“使用模糊推理对日本青鳉对河道水环境的偏好强度进行数学建模”日本灌溉、排水和填海工程学会会刊。