Arresting the spread of invasive species in continental systems

Daniel Hofstadter, Nicholas Kryshak, Connor Wood, Brian Dotters, Kevin Roberts, Kevin Kelly, John Keane, Sarah Sawyer, Paula Shaklee, Anu Kramer, Rocky Gutiérrez & Zach Peery
Invasive species are a primary threat to biodiversity and are challenging to manage once populations become established. But removing them is further complicated when invasions occur in continental, mixed-ownership systems. We demonstrate a rare conservation success: the regional-scale removal of an invasive predator – the barred owl (Strix varia) – to benefit the spotted owl (S. occidentalis) in California, USA. Barred owl site occupancy declined six-fold from 0.19 to 0.03 following one year of removals,...
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2 downloads reported since publication in 2021.

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