Jon S. Horne

Further development of camera‐based estimates of abundance for unmarked animals

Jon S. Horne, Jeremy Baumgardt, Matthew A. Mumma

Abstract Estimating abundance is a cornerstone of wildlife management, conservation, and research, and a variety of approaches have been developed to meet this need. Camera traps have been used to estimate abundance for decades, with earlier deployments using a mark–recapture framework and …

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Walter Wink, the Powers, Individualism, and Acts

Jon S. Horne

Abstract Given the prominence of the Powers in missiology, the paucity of commentary on the Powers in Acts is puzzling. The cause of this is conjectured to be Individualism, which, following Walter Wink’s schema, is argued to be a Power too. Its …

Comparing camera‐based ungulate density estimates: a case study using island populations of bighorn sheep and mule deer

Jessica A. Coltrane, Nicholas J. DeCesare, Jon S. Horne, Paul M. Lukacs

Abstract Camera‐based abundance estimators are an alternative methodology of growing interest in both research and management applications. The statistical formulations of camera‐based abundance estimators using time‐lapse data should theoretically produce precise and unbiased estimates; however, production of unbiased results also requires meeting …

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Influences of Succession and Biogeoclimate on Forage Resources for Elk in Northern Idaho

Deborah S. Monzingo, John G. Cook, Rachel C. Cook, Jon S. Horne et autres

Natural disturbance shaped forest communities for millennia, but fire suppression and timber harvest declines have altered forest structure across the western United States, reducing the abundance of forage for ungulates. We evaluated quality and quantity of forage resources for lactating elk (Cervus …

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Estimating survival of unmarked neonates with camera traps

Jon S. Horne, Sarah Thompson

Abstract Survival and recruitment of offspring are important drivers of population dynamics. Yet, studying wildlife shortly after parturition is logistically challenging and oftentimes cost‐prohibitive. As a result, our ecological understanding of neonate survival is limited for many species and management decisions are …

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Stochastic predation exposes prey to predator pits and local extinction

T. J. Clark, Jon S. Horne, Mark Hebblewhite, Angela D. Luis

Understanding how predators affect prey populations is a fundamental goal for ecologists and wildlife managers. A well‐known example of regulation by predators is the predator pit, where two alternative stable states exist and prey can be held at a low density equilibrium …

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Predicting fine-scale forage distribution to inform ungulate nutrition

T. Ryan McCarley, Tara M. Ball, Jocelyn L. Aycrigg, Eva K. Strand et autres

The quantity and nutritional quality of forage are key drivers for ungulate populations, including mule deer (Odocoileus hemionus) and Rocky Mountain elk (Cervus elaphus nelsoni), in the western U.S., but current vegetation maps are too coarse spatially and temporally to effectively characterize …

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Animal Home Ranges: Concepts, Uses and Estimation

Luca Börger, Jon S. Horne, John Fieberg, Janet L. Rachlow et autres

CHAPTER FIFTEEN. Greater Sage-Grouse Population Dynamics and Probability of Persistence

Edward O. Garton, John W. Connelly, Jon S. Horne, Christian A. Hagen et autres

Effects of wolf pack size and winter conditions on elk mortality

Jon S. Horne, Mark A. Hurley, Craig White, Jon S. Rachael

ABSTRACT Elk (Cervus canadensis) are high‐profile game animals for many states in the western United States, yet over the past several decades some populations have experienced a persistent and broad‐scale decline in recruitment. Over this same period, gray wolves (Canis lupus) have …

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Columbian sharp‐tailed grouse nesting ecology: wind energy and habitat

Matt Proett, Shane B. Roberts, Jon S. Horne, David N. Koons et autres

ABSTRACT The rapid pace of wind‐energy development has increased stakeholder concerns regarding the potential effects on wildlife. Locations targeted for wind‐energy development frequently overlap prairie grouse and greater sage‐grouse (Centrocercus urophasianus) habitats. Research suggests that anthropogenic developments may have negative effects on …

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Integrated population model to improve knowledge and management of Idaho wolves

Jon S. Horne, David E. Ausband, Mark A. Hurley, Jennifer Struthers et autres

ABSTRACT Recently, several states in the western United States have assumed management authority of gray wolves (Canis lupus). Wolves pose a challenge for management agencies who must reconcile interests related to conservation of an ecologically important carnivore with management of a dominant …

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