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Population Dynamics and Trophic Ecology of Nonnative Lake Trout in Priest Lake, Idaho

Citation

Ng, Elizabeth Laurel. (2015). Population Dynamics and Trophic Ecology of Nonnative Lake Trout in Priest Lake, Idaho. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/ng_idaho_0089n_10568.html

Title:
Population Dynamics and Trophic Ecology of Nonnative Lake Trout in Priest Lake, Idaho
Author:
Ng, Elizabeth Laurel
Date:
2015
Keywords:
age-structured population model fishery management isotopic niche space nonnative species population dynamics stable isotope analysis
Program:
Natural Resources
Subject Category:
Fisheries and aquatic sciences
Abstract:

Nonnative Lake Trout have provided a recreational fishery in Priest Lake, Idaho, since their introduction in 1925. However, changes in the fish assemblage, declines in Lake Trout body condition, and negative interactions between Lake Trout and fishes of conservation and economic importance have prompted questions about future management goals for this Lake Trout population. Given the lack of fishery-independent information, I evaluated the demographics and trophic ecology of Lake Trout in Priest Lake. I used age-structured population models to synthesize biological information and evaluate the feasibility and trade-offs associated with eradication, trophy, and balance management scenarios. I also used stable isotope analysis to evaluate Lake Trout in a food-web context. These studies contribute directly to effective management of Lake Trout in Priest Lake, and more broadly, to our understanding of Lake Trout populations throughout North America.

Description:
masters, M.S., Natural Resources -- University of Idaho - College of Graduate Studies, 2015
Major Professor:
Quist, Michael C
Committee:
Johnson, Timothy R; Rachlow, Janet L; Schill, Daniel J
Defense Date:
2015
Identifier:
Ng_idaho_0089N_10568
Type:
Text
Format Original:
PDF
Format:
application/pdf

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