8 Works

Projected effects of climate change on boreal bird community accentuated by anthropogenic disturbances in western boreal forest, Canada

Philippe Cadieux, Yan Boulanger, Dominic Cyr, Anthony Taylor, David Price, Peter Solymos, Diana Stralberg, Han Chen, Aaron Brecka & Junior Tremblay
Aim Climate change is expected to influence boreal bird communities significantly, notably through changes in forest habitat (composition and age structure), in the coming decades. How these changes will accumulate and interact with anthropogenic disturbances remains an open question for most species. Location Northeastern Alberta, Canada. Methods We used the LANDIS-II forest landscape model to project changes in forest landscapes, and associated bird populations (72 passerine species), according to three climatic scenarios (baseline, RCP 4.5,...

Contrasting the suitability of shade coffee agriculture and native forest as overwinter habitat for Canada Warbler (Cardellina canadensis) in the Colombian Andes.

Ana M. Gonzalez, Scott Wilson, Nicholas J. Bayly & Keith A. Hobson
In the Neotropics, coffee production occurs on a large scale in some of the planet’s most biodiverse regions: tropical mountains. Coffee production systems involving shade trees are considered to have a lower impact on biodiversity than alternative sun coffee. To date, the majority of evidence for the value of shade coffee plantations has not taken into account the relative quality of this habitat compared to the native forests they replaced. We determined the suitability of...

Variance in lifetime reproductive success of male polar bears

Evan Richardson, Corey Davis, Ian Stirling, Andrew Derocher, Nicholas Lunn & René Malenfant
Despite the important role that population density plays in ecological and evolutionary processes, studies of solitary species that occur at low densities remain scarce. In the context of mating systems, density is expected to influence the ability of males to find and monopolize mates, in turn influencing variance in lifetime mating/reproductive success and the opportunity for selection. Herein we investigate variance in male lifetime mating success, lifetime reproductive success, and the mating system of a...

Evening locomotor activity during stopover differs on pre-departure and departure days in free-living songbirds

Yolanda Morbey, Andrew Beauchamp, Simon Bonner & Gregory Mitchell
The length of time songbirds remain at a migratory stopover site is likely regulated by a daily stay/go decision informed by fat stores and weather conditions, but the finer-scale timing of this decision and associated pre-departure behaviours are still poorly understood. Using automated radiotelemetry of free-living songbirds captured at a migratory stopover site in spring, we tested whether individuals change their locomotor activity near sunset on their migratory departure day compared to their non-departure days....

rhinoceros auklet microsatellite data

Theresa Burg, Marie Prill, Katharine Studholme, Alice Domalik, Strahan Tucker, Catherine Jardine, Mark Maftei, Kenneth Wright, Jesse Beck, Russell Bradley, Ryan Carle, Thomas Good, Scott Hatch, Peter Hodum, Motohiro Ito, Scott Pearson, Nora Rojek, Leslie Slater, Yutaka Watanuki, Alexis Will, Aidan Bindoff, Glenn Crossin, Mark Drever & Mark Hipfner
We tested the hypothesis that segregation in wintering areas promotes population differentiation in a sentinel North Pacific seabird, the rhinoceros auklet (Cerorhinca monocerata). We collected tissue samples for genetic analyses on five breeding colonies in the western Pacific Ocean (Japan) and 13 in the eastern Pacific Ocean (California to Alaska), and deployed light-level geologgers on 12 eastern Pacific colonies to delineate wintering areas. Loggers were deployed previously on one colony in Japan. There was strong...

Organic farming benefits birds most in regions with more intensive agriculture

David Anthony Kirk, Amanda Martin & Kathryn Freemark Lindsay
1. Organic farming is considered beneficial for biodiversity conservation in agricultural landscapes but the role of agricultural land use intensity (‘agricultural intensity’), particularly at regional scales, has often been neglected. 2. We used breeding season bird abundance estimates from paired organic-conventional fields in Saskatchewan (31 pairs), Ontario (36), and Québec (15), Canada to test two alternative predictions: That the positive effect of organic farming on bird abundance was; a) smaller when controlling for overall effects...

Science to inform policy: linking population dynamics to habitat for a threatened species in Canada

Cheryl Johnson, Glenn Sutherland, Erin Neave, Mathieu Leblond, Patrick Kirby, Clara Superbie & Philip McLoughlin
Abstract 1. Boreal forests provide numerous ecological services, including the ability to store large amounts of carbon, and are of significance to global biodiversity. Increases in industrial activities in boreal landscapes since the mid-20th century have added to concerns over biodiversity loss and climate change. Boreal forests are home to dwindling populations of boreal caribou (Rangifer tarandus caribou) in Canada, a species at risk that requires large, undisturbed landscapes for persistence. In 2012, the Canadian...

Automated classification of avian vocal activity using acoustic indices in regional and heterogeneous datasets

Daniel Yip, Lisa Mahon, Alex MacPhail & Erin Bayne
Acoustic indices combined with clustering and classification approaches have been increasingly used to automate identification of the presence of vocalizing taxa or acoustic events of interest. While most studies using this approach standardize data collection and study design parameters at the project or study level, recent trends in ecological research are to investigate patterns at regional or continental scales. Large-scale studies often require collaboration between research groups and integration of data from multiple sources to...

Registration Year

  • 2020
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Resource Types

  • Dataset
    8

Affiliations

  • Environment Canada
    8
  • University of Alberta
    3
  • University of Saskatchewan
    2
  • Asociación para la Conservación de la Cuenca Amazónica
    1
  • Dalhousie University
    1
  • University of Alaska Fairbanks
    1
  • University of Tasmania
    1
  • Simon Fraser University
    1
  • Lakehead University
    1
  • Hokkaido University
    1