4 Works

Data from: Quantifying ecological and social drivers of ecological surprise

Karen Filbee-Dexter, Celia C. Symons, Kristal Jones, Heather Haig, Jeremy Pittman, Steven M. Alexander, Matthew J. Burke & Heather A. Haig
1. A key challenge facing ecologists and ecosystem managers is understanding what drives unexpected shifts in ecosystems and limits the effectiveness of human interventions during these events. Research that integrates and analyzes data from natural and social systems can provide important insight for unraveling the complexity of these dynamics, and is a critical step towards development of evidence-based, whole systems management approaches. 2. To examine our ability to influence ecosystems that are behaving in unexpected...

Data from: Questioning assumptions of trophic behavior in a broadly ranging marine predator guild

Oliver N. Shipley, Jill A. Olin, Mike Power, Robert M. Cerrato, Michael G. Frisk, Robert. M. Cerrato & Michael Power
We evaluated whether existing assumptions regarding the trophic ecology of a poorly-studied predator guild, northwest (NW) Atlantic skates (family: Rajidae), were supported across broad geographic scales. Four hypotheses were tested using carbon (δ13C) and nitrogen (δ15N) stable isotope values as metrics of foraging behavior: 1) species exhibit ontogenetic shifts in habitat and thus display a shift in 13C with differential use of the continental shelf; 2) species exhibit ontogenetic prey shifts (i.e., from smaller to...

Data from: Reproduction as a bottleneck to treeline advance across the circumarctic forest tundra ecotone

Carissa D. Brown, Geneviève Dufour-Tremblay, Ryan G. Jameson, Steven D. Mamet, Andrew J. Trant, Xanthe J. Walker, Stéphane Boudraeu, Karen A. Harper, Greg H.R. Henry, Luise Hermanutz, Annika Hofgaard, Ludmila Isaeva, G. Peter Kershaw, Jill F. Johnstone & Gregory H. R. Henry
The fundamental niche of many species is shifting with climate change, especially in sub-arctic ecosystems with pronounced recent warming. Ongoing warming in sub-arctic regions should lessen environmental constraints on tree growth and reproduction, leading to increased success of trees colonising tundra. Nevertheless, variable responses of treeline ecotones have been documented in association with warming temperatures. One explanation for time lags between increasingly favourable environmental conditions and treeline ecotone movement is reproductive limitations caused by low...

Data from: Host association influences variation at salivary protein genes in the bat ectoparasite Cimex adjunctus

Benoit Talbot, Maarten J. Vonhof, Hugh G. Broders, Brock Fenton & Nusha Keyghobadi
Parasite-host relationships create strong selection pressures that can lead to adaptation and increasing specialization of parasites to their hosts. Even in relatively loose host-parasite relationships, such as between generalist ectoparasites and their hosts, we may observe some degree of specialization of parasite populations to one of the multiple potential hosts. Salivary proteins are used by blood-feeding ectoparasites to prevent hemostasis in the host and maximize energy intake. We investigated the influence of association with specific...

Registration Year

  • 2018
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  • Dataset
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  • University of Waterloo
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  • Michigan Technological University
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  • University of Saskatchewan
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  • University of Alberta
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  • Dalhousie University
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  • University of Alaska Fairbanks
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  • McGill University
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  • Northern Arizona University
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  • University of Regina
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