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Using an integrative research approach to improve fish migrations in regulated rivers: a case study on Pacific Salmon in the Seton River, Canada
Hydrobiologia ( IF 2.6 ) Pub Date : 2020-08-06 , DOI: 10.1007/s10750-020-04371-2
Nolan N. Bett , Scott G. Hinch , Arthur L. Bass , Douglas C. Braun , Nicholas J. Burnett , Matthew T. Casselman , Steven J. Cooke , S. Matthew Drenner , Ahmed Gelchu , William L. Harrower , Roxx Ledoux , Andrew G. Lotto , Collin T. Middleton , Vanessa Minke-Martin , David A. Patterson , Wenming Zhang , David Z. Zhu

Many of the world’s rivers are dammed, altering the physiology, behaviour, ecology and survival of fish. Integrative research has the potential to improve our understanding of these impacts and could enable environmental managers to develop effective solutions for population conservation. Such approaches, however, are not yet prevalent. We use a case study on Pacific salmon (Oncorhynchus spp.) in British Columbia, Canada, to demonstrate how regulated rivers may be used as experimental systems, allowing for applied research that can advance our understanding of the biology of migratory fish as well as our ability to manage them. Through the integration of multiple research approaches (i.e. biotelemetry, behavioural tests, physiological and molecular analyses, and hydraulic monitoring), we characterized the effects of natal water dilution and dam flow releases on upstream navigation, passage success and post-passage survival of returning adult salmon. Our findings confirmed previously established operational guidelines for natal water dilution and informed the adoption of new operational conditions for dam flow releases, providing an example of the successful application of integrative research to the management of a fisheries resource in a regulated river. We encourage researchers to consider using an experimental approach that integrates multiple research disciplines to inform science-based management action.

中文翻译:

使用综合研究方法改善受管制河流中的鱼类洄游:加拿大塞顿河太平洋鲑鱼的案例研究

世界上许多河流都被筑坝,改变了鱼类的生理、行为、生态和生存。综合研究有可能提高我们对这些影响的理解,并使环境管理者能够制定有效的人口保护解决方案。然而,这种方法尚未流行。我们使用加拿大不列颠哥伦比亚省太平洋鲑鱼 (Oncorhynchus spp.) 的案例研究来展示如何将受管制的河流用作实验系统,从而进行应用研究,以促进我们对洄游鱼类生物学的理解以及我们的管理它们的能力。通过整合多种研究方法(即生物遥测、行为测试、生理和分子分析以及水力监测),我们描述了出生水稀释和大坝流量释放对返回的成年鲑鱼的上游航行、通过成功和通过后存活的影响。我们的研究结果证实了先前制定的产水稀释操作指南,并为大坝流量释放采用新的操作条件提供了信息,为整合研究成功应用于受管制河流中的渔业资源管理提供了一个例子。我们鼓励研究人员考虑使用整合多个研究学科的实验方法来为基于科学的管理行动提供信息。我们的研究结果证实了先前制定的产水稀释操作指南,并为大坝流量释放采用新的操作条件提供了信息,为整合研究成功应用于受管制河流中的渔业资源管理提供了一个例子。我们鼓励研究人员考虑使用整合多个研究学科的实验方法来为基于科学的管理行动提供信息。我们的研究结果证实了先前制定的产水稀释操作指南,并为大坝流量释放采用新的操作条件提供了信息,为整合研究成功应用于受管制河流中的渔业资源管理提供了一个例子。我们鼓励研究人员考虑使用整合多个研究学科的实验方法来为基于科学的管理行动提供信息。
更新日期:2020-08-06
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