Killing Barred Owls to Help Spotted Owls II: Implications for Many Other Range-Expanding Species

@inproceedings{Livezey2010KillingBO,
  title={Killing Barred Owls to Help Spotted Owls II: Implications for Many Other Range-Expanding Species},
  author={K. Livezey},
  year={2010}
}
Abstract Barred Owls (Strix varia) recently expanded their range to include western North America and evidently are competing with federally threatened Northern Spotted Owls (S. occidentalis caurina). To help protect Spotted Owls, the US Fish and Wildlife Service (USFWS) is considering conducting a 3- to 10-y study in which as many as 2150 to 4650 Barred Owls would be killed and, possibly, carrying out long-term management of Barred Owls (Livezey 2010). To assist in these globally precedent… Expand

References

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Killing Barred Owls to Help Spotted Owls I: A Global Perspective
TLDR
A precedent-setting removal study in which as many as 2150 to 4650 Barred Owls would be killed would result in the death of 36 times more raptors than in all other conservation-based projects combined in the United States and its territories, and 84 times more Raptor deaths than in the largest ongoing effort worldwide. Expand
The Invasion of Barred Owls and its Potential Effect on the Spotted Owl: a Conservation Conundrum
TLDR
Both theory and empirical information suggest that barred owls are likely to have negative effects on spotted owl range and density, but the degree of the impact is not predictable. Expand
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TLDR
The resource selection function the authors developed for barred owls in the study area indicated that barred Owls used areas with the combination of low values for topographic position and slope and higher values for NDVI, solar insolation, and an interaction term for canopy closure and tree-crown diameter. Expand
ARE BARRED OWLS DISPLACING SPOTTED OWLS?
Abstract Barred Owls (Strix varia) have expanded their range into the Pacific Northwest, and anecdotal evidence suggests that they may be displacing the federally threatened Northern Spotted OwlExpand
BARRED OWL HABITAT AND PREY: A REVIEW AND SYNTHESIS OF THE LITERATURE
ABSTRACT Barred Owls (Strix varia) historically inhabited the forests of eastern North America. During the last century, they expanded their range to include forests throughout the southern provincesExpand
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TLDR
The small number of F1 hybrids detected during many years of extensive banding studies of Spotted Owls suggests that the isolating mechanisms that separate Barred and Spotted owls are normally sufficient to avoid hybridization between them. Expand
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TLDR
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TLDR
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TLDR
It is suggested that Spotted Owls may use larger ranges than Barred Owls because they prey selectively on a few species of nocturnal mammals, whereas Barred Owl forage more evenly across a broad range of prey types, including diurnal and aquatic species. Expand
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TLDR
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