8 Works

Data from: Within-season synchrony of a masting conifer enhances seed escape

Devan W. Archibald, Andrew G. McAdam, Stan Boutin, Quinn E. Fletcher & Murray M. Humphries
Predator satiation resulting from interannual reproductive synchrony has been widely documented in masting plants, but how reproductive synchrony within a year influences seed escape is poorly understood. We evaluated whether the intra-annual reproductive synchrony of individual white spruce trees (Picea glauca) increased seed escape from their primary predispersal seed predator, North American red squirrels (Tamiasciurus hudsonicus). Trees with cones that matured synchronously relative to those of other trees within red squirrel territories were significantly more...

Data from: Population structure and migration pattern of a conifer pathogen, Grosmannia clavigera, as influenced by its symbiont the mountain pine beetle

Clement Kin Ming Tsui, Amanda D. Roe, Yousry A. El-Kassaby, Adrianne V. Rice, Sepideh Massoumi Alamouti, Felix A. H. Sperling, Janice E. K. Cooke, Jörg Bohlmann & Richard C. Hamelin
We investigated the population structure of Grosmannia clavigera (Gc), a fungal symbiont of the mountain pine beetle (MPB) that plays a crucial role in the establishment and reproductive success of this pathogen. This insect–fungal complex has destroyed over 16 million ha of lodgepole pine forests in Canada, the largest MPB epidemic in recorded history. During this current epidemic, MPB has expanded its range beyond historically recorded boundaries, both northward and eastward, and has now reached...

Data from: Allee effects may slow the spread of parasites in a coastal marine ecosystem

Martin Krkosĕk, Brendan M. Connors, Mark A. Lewis & Robert Poulin
Allee effects are thought to mediate the dynamics of population colonization, particularly for invasive species. However, Allee effects acting on parasites have rarely been considered in the analogous process of infectious disease establishment and spread. We studied the colonization of uninfected wild juvenile Pacific salmon populations by ectoparasitic salmon lice (Lepeophtheirus salmonis) over four years. From a dataset of 67,896 fish, we observed 88 occurrences of pre-copular pair formation among 1258 pre-adult female and 611...

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
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,...

Data from: Habitat selection predicts genetic relatedness in an alpine ungulate

Aaron B. A. Shafer, Joseph M. Northrup, Kevin S. White, Mark S. Boyce, Steeve D. Côté & David W. Coltman
Landscape heterogeneity plays an integral role in shaping ecological and evolutionary processes. Despite links between the two disciplines, ecologists and population geneticists have taken different approaches to evaluating habitat selection, animal movement, and gene flow across the landscape. Ecologists commonly use statistical models such as resource selection functions (RSFs) to identify habitat features disproportionately selected by animals, while population genetic approaches model genetic differentiation according to the distribution of habitat variables. We combined ecological and...

Data from: Genomic consequences of genetic rescue in an insular population of bighorn sheep (Ovis canadensis)

Joshua M. Miller, Jocelyn Poissant, John T. Hogg & David W. Coltman
Genetic rescue is a management intervention whereby a small population is supplemented with individuals from other populations in an attempt to reverse the effects of inbreeding and increased genetic load. One such rescue was recently documented in the population of bighorn sheep (Ovis canadensis) within the National Bison Range wildlife refuge (Montana, USA). Here we examine the locus-specific effects of rescue in this population using a newly developed genome-wide set of 195 microsatellite loci and...

Data from: Citizen science reveals unexpected continental-scale evolutionary change in a model organism

Jonathan Silvertown, Laurence Cook, Robert Cameron, Mike Dodd, Kevin McConway, Jenny Worthington, Peter Skelton, Christian Anton, Oliver Bossdorf, Bruno Baur, Menno Schilthuizen, Benoît Fontaine, Helmut Sattmann, Giorgio Bertorelle, Maria Correia, Cristina Oliveira, Beata Pokryszko, Małgorzata Ożgo, Arturs Stalažs, Eoin Gill, Üllar Rammul, Péter Sólymos, Zoltan Féher & Xavier Juan
Organisms provide some of the most sensitive indicators of climate change and evolutionary responses are becoming apparent in species with short generation times. Large datasets on genetic polymorphism that can provide an historical benchmark against which to test for recent evolutionary responses are very rare, but an exception is found in the brown-lipped banded snail (Cepaea nemoralis). This species is sensitive to its thermal environment and exhibits several polymorphisms of shell colour and banding pattern...

Data from: Mountain pine beetle host-range expansion threatens the boreal forest

Catherine I Cullingham, Janice E K Cooke, Sophie Dang, Corey S Davis, Barry J Cooke & David W Coltman
The current epidemic of the mountain pine beetle (MPB), an indigenous pest of western North American pine, has resulted in significant losses of lodgepole pine. The leading edge has reached Alberta where forest composition shifts from lodgepole to jack pine through a hybrid zone. The susceptibility of jack pine to MPB is a major concern, but there has been no evidence of host-range expansion, in part due to the difficulty in distinguishing the parentals and...

Registration Year

  • 2011

Resource Types

  • Dataset


  • University of Alberta
  • Helmholtz Centre for Environmental Research
  • Utah State University
  • Pomeranian University
  • University of Wrocław
  • University of Otago
  • McGill University
  • University of Guelph
  • Naturhistorisches Museum
  • Simon Fraser University