Mathematical Modeling of Fish Behavior to Hydraulic Environments in Agricultural Canal

农业运河水力环境下鱼类行为的数学模型

• 批准号: 11660245
• 负责人: HIRAMATSU Kazuaki
• 金额: $ 2.18万
• 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: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11660245/
• 关键词: Irrigation and drainage canal; Hydraulic environment; Japanese Medaka; Environmental preference; Habitat environment; Behavioral pattern model; Artificial neural network model; Chaos engineering; 魚群; メダカ; モデル; 数値計算; 並行定位; 反発; 誘引; 水理環境評価

Fish behavior is one of the essential indicators, not only for evaluating the water environments following the impact of development activities on river ecosystems, but also for estimating the functional aspects of river improvement. In contrast to the past ecological studies that have tried to explain the preferences of fish from field measurements in a natural habitat, our study is directed toward developing a methodology for such evaluations with the aid of numerical simulation techniques. The final goal of our study is to evaluate the fish preference in a hydraulic environment by numerical simulations with a fish school model and the observed hydraulic data around the hydraulic structures. In this project, mathematical models for predicting the fish behavior to various hydraulic environments in agricultural canals have been examined by using water tank experiments and numerical simulations.First, the water tank experiments were executed to characterize the schooling behavior of Jap … More anese Medaka fish (Oryzias latipes). Several characteristic variables were introduced to quantify the global structure and the typical characteristics of a fish school in the experiments : the nearest neighbor distance, the polarization and the expanse. The fractal dimension, the return map and the correlation dimension, which are the parameters proposed in the field of chaos engineering, were also used to characterize the nervous strain of fish individuals in the given environment.Next, the Newtonian dynamics model and the behavioral pattern model were investigated to simulate the schooling behavior obtained in the water tank. The comparison of both models showed that the behavioral pattern model could reproduce the characteristic variables of real fish school more accurately. The artificial neural network model could also simulate the schooling behavior obtained in the water tank experimentsFinally, the hydraulic experiments using an open channel were carried out in order to determine the preference curves for the hydraulic environments such as the water depth, the flow velocity and the shield factor. Less

鱼类行为是重要指标之一，不仅可以用于评估开发活动对河流生态系统影响后的水环境，还可以用于评估河流改善的功能方面，这与过去试图解释河流改善的功能方面不同。由于通过在自然栖息地的现场测量来了解鱼类的偏好，我们的研究旨在借助数值模拟技术开发一种进行此类评估的方法，我们研究的最终目标是通过数值模拟来评估鱼类在水力环境中的偏好。鱼群模型和围绕水力观测到的水力数据在这个项目中，通过水箱实验和数值模拟，对预测农业运河中各种水力环境下鱼类行为的数学模型进行了检验。首先，进行水箱实验来表征日本鲽鱼的鱼群行为。实验中引入了几个特征变量来量化鱼群的整体结构和典型特征：最近邻距离、极化和分形维数、返回图和相关性。维数是混沌工程领域提出的参数，也被用来表征给定环境中鱼类个体的神经应变。接下来，研究了牛顿动力学模型和行为模式模型来模拟鱼群行为。两种模型的比较表明，行为模式模型可以更准确地再现真实鱼群的特征变量，人工神经网络模型也可以模拟水箱实验中获得的鱼群行为。进行了开放渠道以确定水深、流速、盾构系数等水力环境的偏好曲线。

项目成果

K.Hiramatsu, S.Shikasho and K.Mori: "Mathematical Modeling of Fish Schooling of Japanese Medaka using Basic Behavioral Patterns"Journal of the Faculty of Agriculture, Kyushu University. 45 (1). 237-253 (2000)

K.Hiramatsu、S.Shikasho 和 K.Mori：“使用基本行为模式对日本青鳉鱼群进行数学建模”九州大学农学院学报。

平松和昭: "水理環境に対する魚群の応答行動の数理モデルについて"平成11年度農業工木学会応用水理研究部会講演集. 21-28 (1999)

Kazuaki Hiramatsu：“鱼群对水力环境响应行为的数学模型”1999 年日本农业工程学会应用水力研究小组委员会会议记录 21-28 (1999)。

K.Hiramatsu, S.Shikasho and K.Mori: "Simulation and Analysis of a Fish School in a Water Tank using a Behavioral Pattern Model"Proceedings of the 12^<th> Congress of the Asia and Pacific Division of the Asia and Pacific Division of the International Assoc

K.Hiramatsu、S.Shikasho 和 K.Mori：“使用行为模式模型模拟和分析水箱中的鱼群”第 12 届亚太分会会议记录

Hiramatsu K. et al.: "Simulation and Analysis of a Fish School in a Water Tank using a Behavioral Pattern Model"Proceedings of the 12^<th> Congress of the Asia and Pacific Division of the International Association for Hydraulic Engineering and Research. 1

Hiramatsu K.等人：“使用行为模式模型对水箱中的鱼群进行模拟和分析”国际水利工程与研究协会亚太分会第12届大会论文集。