Enhancing Recreational Fisheries Management and Stocking at Kenauk Nature

加强基诺克自然休闲渔业管理和放养

• 批准号: 580882-2022
• 负责人: Cooke, StevenSJ
• 金额: $ 2.19万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=745187
• 关键词: Enhancing; Recreational; Fisheries; Management; Stocking

Water temperature interacts with coldwater trout populations in a number of ways. For example, trout that are captured in recreational fisheries during warm summer temperatures or in the winter during ice fishing may experience elevated post-release mortality. In the case of managed waterbodies, suitable summer thermal habitat may become limiting for trout. Stocking decisions that do not adequately consider temperature can lead to mortality such that resources are wasted and fisheries supplementation targets are not met. From a biodiversity perspective, trout can be obligate hosts for imperiled freshwater mussels to complete their life cycle such that if thermal conditions exclude trout, mollusc populations may be extirpated. All of these issues are salient to Kenauk Properties LP which is a tourism outfitter that owns and operates the largest private nature reserve in Canada. They have concerns about how to better manage rainbow and brook trout populations (e.g., which fish to stock, where to invest in habitat restoration, how to optimize hatchery operations). We will conduct a multi-year study to consider the relevance of the thermal biology of trout to the management of fisheries resources at Kenauk. Objectives include 1). Characterize the thermal biology and oxygen conditions of ten fishing lakes within Kenauk reserve; 2). Determine how stocked trout use lakes of different thermal conditions with a particular focus on thermal habitat and depth selection. 3). Determine how exogenous stressors (such as fishing) influence thermal selection, physiological state, and survival of stocked trout. 4). Identify biomarkers that influence thermal selection and survival of stocked fish. 5). Characterize the seasonal habitat selection, movement and thermal biology of wild trout in the Kinonge River. The project ideas were developed using a co-production model that will extend throughout the project to ensure relevance of research to Kenauk. Collectively this research will generate new knowledge that will help Kenauk to better manage their stocked recreational fisheries resources in the face of climate change so they can continue to provide exceptional angling opportunities for their clients and also conserve remaining wild fish populations.

水温以多种方式与冷水鳟鱼种群相互作用。 例如，在温暖的夏季气温或冬季冰钓期间在休闲渔业中捕获的鳟鱼可能会出现较高的放生后死亡率。 在受管理的水体的情况下，合适的夏季热栖息地可能会限制鳟鱼。 未充分考虑温度的放养决策可能会导致死亡，从而造成资源浪费和渔业补充目标无法实现。从生物多样性的角度来看，鳟鱼可能是濒临灭绝的淡水贻贝完成其生命周期的必然宿主，因此，如果热条件排除了鳟鱼，软体动物种群可能会灭绝。 所有这些问题对于 Kenauk Properties LP 来说都很突出，该公司是一家旅游装备供应商，拥有并经营加拿大最大的私人自然保护区。 他们担心如何更好地管理虹鳟鱼和溪鳟鱼种群（例如，饲养哪些鱼、在栖息地恢复方面投资、如何优化孵化场运营）。 我们将进行一项多年研究，以考虑鳟鱼的热生物学与基诺克渔业资源管理的相关性。 目标包括 1)。描述基诺克保护区内十个钓鱼湖的热生物学和氧气条件； 2）。确定放养的鳟鱼如何利用不同热条件的湖泊，特别关注热栖息地和深度选择。 3）。确定外源压力源（例如捕鱼）如何影响热选择、生理状态和放养鳟鱼的生存。 4).识别影响放养鱼类热选择和生存的生物标志物。 5）。描述基农格河野生鳟鱼的季节性栖息地选择、运动和热生物学特征。 该项目想法是使用联合生产模式制定的，该模式将延伸到整个项目，以确保研究与基纳克的相关性。 总的来说，这项研究将产生新的知识，帮助基纳克在气候变化的情况下更好地管理其休闲渔业资源，以便他们能够继续为客户提供特殊的钓鱼机会，并保护剩余的野生鱼类种群。