2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 10:00 AM - 10:15 AM | THE UTILITY OF SIMULATIONS IN UNDERSTANDING POPULATION DYNAMICS IN FRESH WATERS: EVALUATING DEMOGRAPHY, GENETICS, AND REINTRODUCTION OF A THREATENED CHAR | 310 B
THE UTILITY OF SIMULATIONS IN UNDERSTANDING POPULATION DYNAMICS IN FRESH WATERS: EVALUATING DEMOGRAPHY, GENETICS, AND REINTRODUCTION OF A THREATENED CHAR
Modeling population dynamics of freshwater organisms is a complex challenge that often depends upon a combination of environmental, demographic, and genetic factors. Simulation-based approaches offer a promising way to address this challenge. We report results from a simulation study of bull trout (Salvelinus confluentus) reintroduction to three watersheds in northeastern Washington State, USA, where local extirpations of bull trout are linked to barriers, habitat degradation, invasive species and other factors. We used an individual-based, spatially-explicit simulation platform to evaluate how reintroduction strategies, life history variation, and environmental factors interact to influence the demography and population genetics of reintroduced bull trout populations. We found that connectivity (presence or absence of barriers) had the largest effect on demographic and genetic outcomes over 200 years, with a greater effect than both initial genetic diversity and life history variation. We also identified regions of the study system (e.g., the upper Sullivan watershed) in which bull trout populations persisted across a wide range of demographic, life history, and environmental parameters. Our results highlight the utility of simulation-based approaches in exploring and understanding population dynamics – and their implications for management strategies – in fresh waters.
- Dams
- Genetics
- Modeling
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Presenters/Authors
Meryl C. Mims
(), Virginia Tech, mims@vt.edu;
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Andrew Bearlin
(), Seattle City Light, andrew.bearlin@gmail.com;
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Jacob Burkhart
(), University of Missouri, jacob.burkhart9@gmail.com;
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Casey Day
(), Purdue University, day29@purdue.edu;
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Matthew Fuller
(), ORISE postdoc with US EPA/Atlantic Ecology Division, matthew.robert.fuller@gmail.com;
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Jameson Hinkle
(), University of Virginia, hinkyisme@gmail.com;
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Erin Landguth
(), University of Montana, erin.landguth@gmail.com;
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