Hierarchical models

Squeezed by a habitat split: Warm ocean conditions and old-forest loss interact to reduce long-term occupancy of a threatened seabird

Theory predicts that species requiring multiple habitat types simultaneously should have heightened sensitivity to anthropogenic pressures, yet tests of this prediction are especially rare. We tested whether breeding site occupancy of the threatened …

On-animal acoustic monitoring provides insight to ungulate foraging behavior

Foraging behavior underpins many ecological processes; however, robust assessments of this behavior for free-ranging animals are rare due to limitations to direct observations. We leveraged acoustic monitoring and GPS tracking to assess the factors …

Synergistic effects of climate and land‐use change influence broad‐scale avian population declines

Bird species in the Pacific Northwest of the United States declined most in areas that had both habitat loss and climate change (measured as temperature and precipitation).

Impacts of the Northwest Forest Plan on forest composition and bird populations

We provide a test of the efficacy of the Northwest Forest Plan, showing that despite limiting cutting of old growth forest, wildlfire has caused continued losses and declines in old growth associated birds have been amplified.

A comment on priors for Bayesian occupancy models

We discuss the implications for occupancy models of seemingly diffuse normal priors becoming highly informative when transformed for use in modeling binary data

Predation risk across a dynamic landscape: effects of anthropogenic land use, natural landscape features, and prey distribution

We examined the spatial patterns of mule deer predation during periods of high and low natural gas development activity finding complex relationships between predation and both natural and anthropogenic features.

Variation in Ungulate Body Fat: Individual Versus Temporal Effects

Across multiple study sites in Colorado, mule deer body fat was not well explained by spatial or temporal effects, suggesting individual characteristics, particularly the successful weaning of fawns in the previous year are the dominant forces driving variation in body fat.

Movement reveals scale dependence in habitat selection of a large ungulate

Using a novel method to assess habtiat selection across spatiotemporal scales defined by animals movements, we show that mule deer display scale-dependent responses to most habitat features but scale-invariant avoidance of natural gas development.

Black bear population ecology in Ontario

This project is focused on understanding what factors influence variation in black bear population density across the province of Ontario. We are using non-invasive sampling and spatial capture-recapture models to estimate black bear population density and relate variation in density to factors such as harvest, habitat fragmentation and climate.

Causes and consequences of variation in animal space-use and movement

Under construction Team members involed in this project Brynn McLellan Grace Bullington Helena Rheault Joe Northrup Maegwin Bonar Robby Marrotte Tyler Ross