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Monday, January 28 • 2:40pm - 3:00pm
(SYMPOSIA-06) Science to Action: Decision-Support to Advance Stream Trout Management in a Changing Climate

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AUTHORS: Andrew K. Carlson, William W. Taylor – Center for Systems Integration and Sustainability, Michigan State University; Zeenatul Basher, Gulf of Mexico Fishery Management Council; T. Douglas Beard Jr., National Climate Adaptation Science Center, USGS; Dana M. Infante, Center for Systems Integration and Sustainability, Michigan State University

ABSTRACT: Decision-making with limited information is commonplace in fisheries management, stemming from the need to sustain fisheries ecosystems in the face of changing environmental and human conditions. Decision support tools (DSTs) facilitate decision-making by systematically integrating environmental and socioeconomic information and accounting for variability in human and natural systems, yet they have not been widely applied in freshwater recreational fisheries management. As such, we collaborated with fisheries research and management professionals to develop a DST – specifically, a stream prioritization tool (SPT) – to inform fisheries management amid climate change in Michigan coldwater streams inhabited Brook Trout Salvelinus fontinalis, Brown Trout Salmo trutta, and Rainbow Trout Oncorhynchus mykiss. The SPT ranked streams by synthesizing management decision-making criteria that affect trout thermal habitat quality (e.g., current and future stream temperature, relative abundance of trout, groundwater input). Productive, socioeconomically important trout streams with high thermal habitat quality such as the Au Sable and Manistee rivers were predictably the highest-ranked streams by the SPT and thus warrant continued trout population and thermal habitat management (e.g., groundwater conservation). However, certain streams currently important for recreational fishing (e.g., Muskegon River, Pere Marquette River) were projected to have relatively low thermal habitat quality by 2056, whereas other streams without top-tier fisheries (e.g., Rapid River, Davenport Creek) were predicted to have high-quality thermal habitats, suggesting they merit increased management efforts. Revealing unexpected yet management-relevant findings under different scenarios of climate change, the SPT is a flexible instrument to help sustain thermally resilient trout populations and streamline fisheries management decision-making amid climate change.

Monday January 28, 2019 2:40pm - 3:00pm

Attendees (2)