Worldwide river fragmentation by infrastructures is altering essential ecological processes including fish migrations. Unlike laboratory approaches, field methods and biophysical models have the potential to provide realistic representations of interacting fish-obstacle systems, furthering insights in behavioural and biomechanics science, and allowing better bioinspired engineering. We developed a new field, image-based method that integrates a biophysical mechanistic model to describe the swimming and leaping biomechanics of wild populations of fish in the non-lab ecological context where their reproductive migration takes place. A weir obstacle in natural riverine conditions where fish freely migrate upstream to their breeding grounds was filmed. A biophysical model including the relevant biomechanical and hydraulic forces and their interactions was parametrised and calibrated with the spatial coordinates of fish trajectories. The method was validated with independent empirica...

中文翻译：

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鱼在瀑布下游泳和跳跃的生物力学：具有生物工程意义的现实领域、基于图像的生物物理模型。

基础设施造成的全球河流破碎化正在改变包括鱼类洄游在内的重要生态过程。与实验室方法不同，现场方法和生物物理模型有可能提供相互作用的鱼-障碍系统的真实表示，进一步深入了解行为和生物力学科学，并允许更好的仿生工程。我们开发了一种新的领域、基于图像的方法，该方法集成了生物物理机制模型来描述野生鱼类种群在繁殖迁移发生的非实验室生态环境中的游泳和跳跃生物力学。拍摄了自然河流条件下的堰障碍，鱼类可以自由地向上游迁移到它们的繁殖地。包括相关生物力学和水力及其相互作用的生物物理模型使用鱼类轨迹的空间坐标进行参数化和校准。该方法已通过独立的经验...