16 Works

Data from: Species-area curve and distance-decay relationship indicate habitat thresholds of ectomycorrhizal fungi in an old-growth Pseudotsuga menziesii landscape

J.M. Kranabetter, S.M. Berch, J.A. MacKinnon, O. Ceska, D.E. Dunn, P.K. Ott, D. E. Dunn, J. A. MacKinnon, J. M. Kranabetter & P. K. Ott
Aim: Ectomycorrhizal fungi (EMF) are a diverse and essential biota of forests that are vulnerable to species loss through reductions in late-seral habitat. We examined how the spatial ecology of this biota, particularly distance-decay and species-area relationships, could better inform habitat thresholds for EMF conservation planning. Location: Southeast Vancouver Island near Victoria, British Columbia, Canada. Methods: Using a stratified sampling design, 11 plots (0.15 ha in size) were established at 0.05 to 17.5 km apart...

Data from: The costs of kleptoparasitism: a study of mixed-species seabird breeding colonies

Davide Gaglio, Richard B. Sherley, Timothée R. Cook, Peter G. Ryan & Tom Flower
Mixed-species assemblages are common in nature, providing mutual benefits to associating species including anti-predator advantages or resource facilitation. However, associating with other species may also impose costs through kleptoparasitism (food theft). Identification of these costs, and how they vary when different species breed alongside one another, is essential to understand the payoffs of mixed-species assemblages. We explore the costs of kleptoparasitism for greater crested terns Thalasseus bergii provisioning offspring at a single-species colony, where individuals...

Data from: From salmon to salmonberry: the effects of salmon-derived nutrients on the stomatal density of leaves of the nitriphillic shrub Rubus spectabilis

G.G. Van Den Top, John D. Reynolds, Herbert H.T. Prins, Jim Mattsson, David J. Green, Ronald C. Ydenberg, Gregory G. Van Den Top & Herbert H. T. Prins
Background and Aims: Nutrients derived from the carcasses of Pacific salmon have been shown to have wide-ranging effects on riparian systems. These include changes in community species composition and an increase in leaf nitrogen concentration, with the latter effect pronounced in the nitriphilic shrub Rubus spectabilis (salmonberry). Experimental work with other species has shown that leaf stomatal density increases in response to nitrogen fertilization. Therefore, we predicted that the stomatal density of salmonberry leaves would...

Data from: Ecology can inform genetics: disassortative mating contributes to MHC polymorphism in Leach’s storm-petrels (Oceanodroma leucorhoa)

Brian Hoover, Miguel Alcaide, Sarah Jennings, Simon Yung Wa Sin, Scott V. Edwards & Gabrielle A. Nevitt
Studies of MHC-based mate choice in wild populations generally test hypotheses by assuming female choice and male-male competition, whether or not mate choice dynamics have been previously determined for the species under study. Here we examined mate choice patterns in a small burrow-nesting seabird, the Leach’s storm-petrel (Oceanodroma leucorhoa), using the Major Histocompatibility Complex (MHC). The life history and ecology of this species is extreme: both partners work together to fledge a single chick during...

Data from: Sudden collapse of a mesopredator reveals its complementary role in mediating rocky reef regime shifts

Jenn M. Burt, Tim M. Tinker, Daniel K. Okamoto, Kyle W. Demes, Keith Holmes & Anne K. Salomon
While changes in the abundance of keystone predators can have cascading effects resulting in regime shifts, the role of mesopredators in these processes remains underexplored. We conducted annual surveys of rocky reef communities that varied in the recovery of a keystone predator (sea otters Enhydra lutris) and the mass mortality of a mesopredator (sunflower sea star Pycnopodia helianthoides) due to an infectious wasting disease. By fitting a population model to empirical data, we show that...

Microfauna at Tse’K’wa: Paleoenvironmental Reconstruction in the Peace River Region, Northeast British Columbia

Roxanne Pendleton
The transition from the late Pleistocene to the early Holocene is known to have been a time of dramatic climatic and environmental changes, however there is still much that is not known about this period in North America. The Peace River Region of Northeast British Columbia is especially interesting because it is located in the hypothesized biogeographic corridor, allowing previously uninhabitable land to become open for colonization by plants, animals and humans at the end...

Data from: Genomic predictions and genome-wide association study of resistance against Piscirickettsia salmonis in coho salmon (Oncorhynchus kisutch) using ddRAD sequencing

Agustin Barría, Kris A. Christensen, Grazyella M. Yoshida, Katharina Correa, Ana Jedlicki, Jean Paul Lhorente, William S. Davidson & José Manuel Yáñez
Piscirickettsia salmonis is one of the main infectious diseases affecting coho salmon (Oncorhynchus kisutch) farming, and current treatments have been ineffective for the control of this disease. Genetic improvement for P. salmonis resistance has been proposed as a feasible alternative for the control of this infectious disease in farmed fish. Genotyping by sequencing (GBS) strategies allow genotyping of hundreds of individuals with thousands of single nucleotide polymorphisms (SNPs), which can be used to perform genome...

Data from: Higher rates of pre‐breeding condition gain positively impacts clutch size: a mechanistic test of the condition‐dependent individual optimization model

Holly L. Hennin, Cody J. Dey, Joel Bety, H. Grant Gilchrist, Pierre Legagneux, Tony D. Williams & Oliver P. Love
1. A combination of timing of and body condition (i.e., mass) at arrival on the breeding grounds interact to influence the optimal combination of the timing of reproduction and clutch size in migratory species. This relationship has been formalized by Rowe et al. in a condition-dependent individual optimization model (American Naturalist, 1994, 143, 689-722), which has been empirically tested and validated in avian species with a capital-based breeding strategy. 2. This model makes a key,...

Data from: Geometric models to explore mechanisms of dynamic shape change in skeletal muscle

Taylor J.M. Dick, James M. Wakeling & Taylor J. M. Dick
Skeletal muscle bulges when it contracts. These 3-dimensional (3D) dynamic shape changes play an important role in muscle performance by altering the range of fascicle velocities over which a muscle operates. However traditional muscle models are 1D and cannot fully explain in vivo shape changes. In this study we compared medial gastrocnemius behaviour during human cycling (fascicle length changes and rotations) predicted by a traditional 1D Hill-type model and by models that incorporate 2D and...

Data from: Maintenance costs of male dominance and sexually antagonistic selection in the wild

Zbyszek Boratynski, Esa Koskela, Tapio Mappes, Suzanne C. Mills & Mikael Mokkonen
1. Variation in dominance status determines male mating and reproductive success, but natural selection for male dominance can be detrimental or antagonistic for female performance, and ultimately their fitness. Attaining and maintaining a high dominance status in a population of competing individuals is physiologically costly for males. But how male dominance status is mediated by maintenance energetics is currently not well understood, nor are the correlational effects of male energetics on his sisters recognized. 2....

Data from: A range-wide domino effect and resetting of the annual cycle in a migratory songbird

Elizabeth A. Gow, Lauren Burke, David W. Winkler, Samantha M. Knight, Robert G. Clark, Marc Bélisle, Lisha L. Berzins, Tricia Blake, Eli S. Bridge, Russell D. Dawson, Peter O. Dunn, Dany Garant, Geoff Holroyd, Andrew G. Horn, David J.T. Hussell, Olga Lansdorp, Andrew J. Laughlin, Marty L. Leonard, Fanie Pelletier, Dave Shutler, Lynn Siefferman, Caz M. Taylor, Helen Trefry, Carol M. Vleck, David Vleck … & D. Ryan Norris
Latitudinal differences in timing of breeding are well documented but how such differences carry over to influence timing of events in the annual cycle of migratory birds is not well understood. We examined geographic variation in timing of events throughout the year using light-level geolocator tracking data from 133 migratory tree swallows (Tachycineta bicolor) originating from 12 North American breeding populations. A swallow’s breeding latitude influenced timing of breeding, which then carried over to affect...

Data from: Individual dispersal decisions in a cooperative breeder: ecological constraints, the benefits of philopatry, and the social queue for dominance

Martha J. Nelson-Flower, Elizabeth M. Wiley, Thomas P. Flower, Amanda R. Ridley & Tom P. Flower
1. Delayed dispersal is a key step in the evolution of familial animal societies and cooperative breeding. However, no consensus has been reached on the ecological and social circumstances driving delayed dispersal. 2. Here we test predictions from the ecological constraints and benefits of philopatry hypotheses as well as the recently-proposed dual benefits hypothesis to better understand the evolution of group-living and cooperative breeding. Furthermore, we consider how individual social circumstances within groups affect dispersal...

Data from: Salmonid species diversity predicts salmon consumption by terrestrial wildlife

Christina N. Service, Andrew W. Bateman, Megan S. Adams, Kyle A. Artelle, Thomas E. Reimchen, Paul C. Paquet & Chris T. Darimont
1. Resource waves - spatial variation in resource phenology that extends feeding opportunities for mobile consumers - can affect the behaviour and productivity of recipient populations. Interspecific diversity among Pacific salmon species (Oncorhynchus spp.) creates staggered spawning events across space and time, thereby prolonging availability to terrestrial wildlife. 2. We aim to understand how such variation might influence consumption by terrestrial predators compared with resource abundance and intra- and inter- specific competition. 3. Using stable...

Data from: Physiological predictors of reproductive performance in the European Starling (Sturnus vulgaris)

Melinda A. Fowler, Mélissa Paquet, Véronique Legault, Alan A. Cohen & Tony D. Williams
Background: It is widely assumed that variation in fitness components has a physiological basis that might underlie selection on trade-offs, but the mechanisms driving decreased survival and future fecundity remain elusive. Here, we assessed whether physiological variables are related to workload ability or immediate fitness consequences and if they mediate future survival or reproductive success. We used data on 13 physiological variables measured in 93 female European starlings (Sturnus vulgaris) at two breeding stages (incubation,...

Data from: Natural selection and the predictability of evolution in Timema stick insects

Patrik Nosil, Romain Villoutreix, Clarissa F. De Carvalho, Tim E. Farkas, Victor Soria-Carrasco, Jeff L. Feder, Bernard J. Crespi & Zachariah Gompert
Predicting evolution remains difficult. We studied the evolution of cryptic body coloration and pattern in a stick insect using 25 years of field data, experiments, and genomics. We found that evolution is more difficult to predict when it involves a balance between multiple selective factors and uncertainty in environmental conditions than when it involves feedback loops that cause consistent back-and-forth fluctuations. Specifically, changes in color-morph frequencies are modestly predictable through time (r2 = 0.14) and...

Scour Pool Incision in Bedrock Canyons

Eric Cao
Support data for M.Sc Thesis: Scour pool incision in bedrock canyons.

Registration Year

  • 2018
    16

Resource Types

  • Dataset
    16

Affiliations

  • Simon Fraser University
    16
  • University of Cape Town
    2
  • Acadia University
    1
  • Utah State University
    1
  • Université de Sherbrooke
    1
  • University of Notre Dame
    1
  • University of Queensland
    1
  • University of Alberta
    1
  • University of North Carolina at Asheville
    1
  • Dalhousie University
    1