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Suppressing invasive brown trout networks
Only metapopulation-wide, multi-life-stage suppression quickly drove invasive brown trout toward quasi-extinction.
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Which invader?
Brown trout (Salmo trutta).
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Fastest time to QE?
5.7 or 6.3 years with full CR methods plus BAC electrofishing.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
How many current-climate scenarios hit 100% QE?
6 of 18.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Without mechanical removal?
QE probability 29% and time >27 years.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
QE definition?
Abundance at 5% of carrying capacity K.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Why target multiple life stages?
Needed to quickly eliminate the subpopulation.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Rapid response vs at carrying capacity?
Median 4 years vs 12 years to QE.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Climate finding?
Declines were driven mainly by warming Colorado River temperatures.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Leaving one subpopulation unsprayed?
Dispersal from the unsprayed unit can undo others' suppression.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Sensitive CR stages?
Large adults and age 0 (λ to 0.975 and 0.979 at 30% suppression).
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified
Weir effect?
Delayed metapopulation QE but reduced λ in BAC tributary subpopulations.
Source: Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change · DOI · quote verified