4 Works

Data from: Population structure of mountain pine beetle symbiont Leptographium longiclavatum and the implication on the multipartite beetle-fungi relationships

Clement Kin-Ming Tsui, Lina Farfan, Amanda D. Roe, Adrianne V. Rice, Janice E. K. Cooke, Yousry A. El-Kassaby & Richard C. Hamelin
Over 18 million ha of forests have been destroyed in the past decade in Canada by the mountain pine beetle (MPB) and its fungal symbionts. Understanding their population dynamics is critical to improving modeling of beetle epidemics and providing potential clues to predict population expansion. Leptographium longiclavatum and Grosmannia clavigera are fungal symbionts of MPB that aid the beetle to colonize and kill their pine hosts. We investigated the genetic structure and demographic expansion of...

Data from: Fitness dynamics within a poplar hybrid zone: I. Prezygotic and postzygotic barriers impacting a native poplar hybrid stand.

Amanda D. Roe, Chris J. K. MacQuarrie, Marie-Claude Gros-Louis, J. Dale Simpson, Josyanne Lamarche, Tannis Beardmore, Stacey L. Thompson, Philippe Tanguay & Nathalie Isabel
Hybridization and introgression are pervasive evolutionary phenomena that provide insight to the selective forces that maintain species boundaries, permit gene flow and control the direction of evolutionary change. Poplar trees (Populus L.) are well known for their ability to form viable hybrids and maintain their distinct species boundaries despite this interspecific gene flow. We sought to quantify the hybridization dynamics and postzygotic fitness within a hybrid stand of balsam poplar (Populus balsamifera L.), eastern cottonwood...

Data from: Fitness dynamics within a poplar hybrid zone: II. Impact of exotic sex on native poplars in an urban jungle.

Amanda D. Roe, Chris J. K. MacQuarrie, Marie-Claude Gros-Louis, J. Dale Simpson, Josyanne Lamarche, Tannis Beardmore, Stacey L. Thompson, Philippe Tanguay, Nathalie Isabel & Chris J.K. MacQuarrie
Trees bearing novel or exotic gene components are poised to contribute to the bioeconomy for a variety of purposes such as bioenergy production, phytoremediation, and carbon sequestration within the forestry sector, but sustainable release of trees with novel traits in large-scale plantations requires the quantification of risks posed to native tree populations. Over the last century, exotic hybrid poplars produced through artificial crosses were planted throughout eastern Canada as ornamentals or windbreaks and these exotics...

Data from: Life-stage differences in spatial genetic structure in an irruptive forest insect: implications for dispersal and spatial synchrony

Patrick M. A. James, Barry Cooke, Bryan Brunet, Lisa Lumley, Felix Sperling, Marie-Josée Fortin, Vanessa S. Quinn, Brian R. Sturtevant, Bryan M. T. Brunet, Lisa M. Lumley & Felix A. H. Sperling
Dispersal determines the flux of individuals, energy, and information and is therefore a key determinant of ecological and evolutionary dynamics. Yet, it remains difficult to quantify its importance relative to other factors. This is particularly true in cyclic populations in which demography, drift, and dispersal contribute to spatio-temporal variability in genetic structure. Improved understanding of how dispersal influences spatial genetic structure is needed to disentangle the multiple processes that give rise to spatial synchrony in...

Registration Year

  • 2014
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Resource Types

  • Dataset
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Affiliations

  • Canadian Forest Service
    4
  • University of Alberta
    2
  • Umeå University
    2
  • University of Montreal
    1
  • Northern Research Station
    1
  • Purdue University
    1
  • University of Toronto
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  • University of British Columbia
    1
  • Natural Resources Canada
    1