Suppression of invasive lake trout in an isolated backcountry lake in Glacier National Park
Links
- More information: Publisher Index Page (via DOI) Publicly accessible after 1/20/2017 (public access data via CHORUS)
- Download citation as: RIS | Dublin Core
Abstract
Fisheries managers have implemented suppression programmes to control non-native lake trout, Salvelinus namaycush (Walbaum), in several lakes throughout the western United States. This study determined the feasibility of experimentally suppressing lake trout using gillnets in an isolated backcountry lake in Glacier National Park, Montana, USA, for the conservation of threatened bull trout, Salvelinus confluentus (Suckley). The demographics of the lake trout population during suppression (2009–2013) were described, and those data were used to assess the effects of suppression scenarios on population growth rate (λ) using an age-structured population model. Model simulations indicated that the population was growing exponentially (λ = 1.23, 95% CI: 1.16–1.28) prior to suppression. However, suppression resulted in declining λ(0.61–0.79) for lake trout, which was concomitant with stable bull trout adult abundances. Continued suppression at or above observed exploitation levels is needed to ensure continued population declines.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Suppression of invasive lake trout in an isolated backcountry lake in Glacier National Park |
| Series title | Fisheries Management and Ecology |
| DOI | 10.1111/fme.12200 |
| Volume | 24 |
| Issue | 1 |
| Year Published | 2017 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Coop Res Unit Seattle, Northern Rocky Mountain Science Center |
| Description | 16 p. |
| First page | 33 |
| Last page | 48 |
| Google Analytic Metrics | Metrics page |