32 Works

Data from: Benefits of an anti-parasite treatment are influenced by within-brood size variation in Tree Swallows (Tachycineta bicolor)

Ilsa Griebel & Russell Dawson
In all animals, susceptibility to parasites can differ among individuals. Young, nest-bound birds are exposed to a diversity of nest-dwelling ectoparasites that typically feed on their blood. Within broods, hatching asynchrony creates size hierarchies that result in morphological and physiological variation among nest mates, and susceptibility to parasites also may vary predictably with this size hierarchy. Our objective was to use a broad-spectrum, anti-parasite drug, ivermectin (IVM), to treat individual nestling Tree Swallows (Tachycineta bicolor)...

Data from: Latitudinal limit not a cold limit: Cold temperatures do not constrain an endangered tree species at its northern edge

Alana J. Clason, Eliot J. B. McIntire & Philip J. Burton
Aim A strong influence of climate on species’ range is often assumed, and forms the basis for projecting many future range shifts with changing climate. Particularly at poleward latitudinal or elevational edges, abiotic conditions are thought to play a major role in limiting distributions. We estimated the roles of climate and landscape features in shaping habitat at the northern distributional edge of a critically threatened mountain tree species. Location British Columbia and Alberta, Canada. Taxon...

Data from: Network ecology in dynamic landscapes

Marie-Josee Fortin, Mark Dale & Chris Brimacombe
Network ecology is an emerging field that allows researchers to conceptualize and analyze ecological networks and their dynamics. Here, we focus on the dynamics of ecological networks in response to environmental changes. Specifically, we formalize how network topologies constrain the dynamics of ecological systems into a unifying framework in network ecology that we refer to as the “ecological network dynamics framework”. This framework stresses that the interplay between species interaction networks and the spatial layout...

Can diet composition estimates using stable isotope analysis of feathers predict growth and condition in nestling mountain bluebirds (Sialia currucoides)

Aija White & Russell Dawson
Insectivorous birds breeding in seasonal environments provision their dependent young during periods when prey diversity and abundance vary. Consequently, the composition and nutritional value of diets parents feed to their offspring may differ within and among broods, potentially affecting the condition of nestlings. In a population of mountain bluebirds (Sialia currucoides), we used two methods to estimate diet composition for individual nestlings: direct observation of provisioning using video recordings at 5 and 9 days post-hatch,...

A deglacial hazard cascade exemplified by the landslide, tsunami and outburst flood at Elliot Creek, Southern Coast Mountains, British Columbia, Canada

Marten Geertsema, Brian Menounos, Gemma Bullard, Jonathan Carrivick, John Clague, Chunli Dai, Davide Donati, Goran Ekstrom, Jennifer Jackson, Patrick Lynett, Manuele Pichierri, Andy Pon, Dan Shugar, Doug Stead, Justin Del Bel Belluz, Pierre Friele, Ian Giesbrecht, Derek Heathfield, Tom Millard, Sasha Nasonova, Andrew Schaeffer, Brent Ward, Darren Blaney, Erik Blaney, Camille Brillon … & Meghan Sharp
We describe and model the evolution of a recent landslide and outburst flood in the southern Coast Mountains, British Columbia, Canada. About 18 Mm3 of rock descended 1000 m from a steep valley wall and traveled across the toe of a glacier before entering a 0.6 km2 glacier lake and producing a >100-m high wave. Water overtopped the lake outlet and scoured a 10-km long channel before depositing debris on a 2 km2 fan below...

Exploring the Potential of Halal Tourism Through Institutional Analysis of Halal Certifiers in the Philippines

Steven Von Cuevas, Cristopher Allen Franco, Robert Charles Capistrano & Junnell Guia

Data from: Spatial genetic structure of the mountain pine beetle (Dendroctonus ponderosae) outbreak in western Canada: historical patterns and contemporary dispersal

G. D. N. Gayathri Samarasekera, Nicholas V. Bartell, B. Staffan Lindgren, Janice E. K. Cooke, Corey S. Davis, Patrick M. A. James, David W. Coltman, Karen E. Mock, Brent W. Murray, G. D. N. Gayathri Samarasekera, Nicholas V. Bartell, B. Staffan Lindgren, Janice E. K. Cooke, Corey S. Davis, Patrick M. A. James, David W. Coltman, Karen E. Mock & Brent W. Murray
Environmental change has a wide range of ecological consequences, including species extinction and range expansion. Many studies have shown that insect species respond rapidly to climatic change. A mountain pine beetle epidemic of record size in North America has led to unprecedented mortality of lodgepole pine, and a significant range expansion to the northeast of its historic range. Our goal was to determine the spatial genetic variation found among outbreak population from which genetic structure,...

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  • University of Northern British Columbia
  • University of Alberta
  • University of Queensland
  • University of Guelph
  • University of Wisconsin-Milwaukee
  • Natural Resources Canada
  • Acadia University
  • Utah State University
  • Columbia University
  • Dalhousie University