Invasive species
Suppressing invasive brown trout networks
Open access · cc by · source: Europe PMC
Only metapopulation-wide, multi-life-stage suppression quickly drove invasive brown trout toward quasi-extinction.
Study at a glance
- Design
- Computational / modelling — Metapopulation PVA of invasive brown trout under removal and climate/reservoir scenarios
- N
- Simulation scenarios (18 under current climate); not an empirical sample-size study
- Population
- Modeled brown trout in Colorado River and Bright Angel Creek subpopulations
- Outcome
- Time and probability of quasi-extinction under multi-life-stage suppression
Structured fields used in claim comparison tables when every cited study has a complete layer.
Key findings
Best combos reached QE in 5.7–6.3 years; skipping age-0 methods dropped QE probability to 29%; warming can shrink the mainstem but tributaries persist.
Methodology
Built a metapopulation PVA for invasive brown trout in Colorado River and Bright Angel Creek subpopulations, comparing electrofishing, harvest, redd destruction, mechanical removal, and climate/reservoir scenarios.
Limitations
Does not field-test that managers can actually hit those suppression rates every year.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
This library holds 3 empirical papers on invasive species with measured outcomes rather than reviews.
Evidence for the claim as stated.
Only metapopulation-wide, multi-life-stage suppression quickly drove invasive brown trout toward quasi-extinction.
Evidence for the claim as stated.
A metapopulation PVA for invasive brown trout in Colorado River and Bright Angel Creek compared electrofishing, harvest, redd destruction, mechanical removal and climate/reservoir scenarios. Best combinations reached quasi-extinction in 5.7–6.3 years; skipping age-0 methods dropped QE probability to 29%; warming can shrink the mainstem but tributaries persist. The model does not field-test that managers can actually hit those suppression rates every year.
Evidence for the claim as stated.
Mixed-effects and adjacent hierarchical papers here are not one invasive-species result. Children's BMI growth is a traffic-pollution question (non-freeway NOₓ associated; freeway NOₓ not). Abisko space-for-time finds SOC falling from 9.01 to 4.51 kg m⁻² heath to forest as a shrub-expansion analogue. Šumava tree rings track beech versus spruce under shifting air chemistry in 35 trees. The brown-trout PVA is a suppression forecast (QE in 5.7–6.3 years; 29% if age-0 methods are skipped), not a mixed model of field counts proving those rates. The method label mixes four questions.
Evidence for the claim as stated.
Open questions
Tensions this paper is part of
From concept pages' “where studies disagree.” Disagreement means the same question; scope means different assays, populations, or outcomes.
Mixed-effects and adjacent hierarchical papers here are not one invasive-species result. Children's BMI growth is a traffic-pollution question (non-freeway NOₓ associated; freeway NOₓ not). Abisko space-for-time finds SOC falling from 9.01 to 4.51 kg m⁻² heath to forest as a shrub-expansion analogue. Šumava tree rings track beech versus spruce under shifting air chemistry in 35 trees. The brown-trout PVA is a suppression forecast (QE in 5.7–6.3 years; 29% if age-0 methods are skipped), not a mixed model of field counts proving those rates. The method label mixes four questions.
Related papers in this topic
Same topic cluster — not a recommendation engine.