14 Works

Data from: Global pattern and drivers of nitrogen saturation threshold of grassland productivity

Yunfeng Peng, Han Chen, Yuanhe Yang & Han Y.H. Chen
Ecosystem productivity usually exhibits first increase and then saturated response to increasing nitrogen (N) additions, yet the broad-scale pattern and potential drivers of the N saturation threshold are little investigated. By synthesizing N addition experiments with at least four N-input levels from the global grasslands, we applied the quadratic-plus-plateau model to fit the aboveground net primary productivity (ANPP)-N rate relationship, and estimated the saturation threshold for N rate (critical N rate, NCR) and maximum ANPP...

Continent-wide effects of urbanization on bird and mammal genetic diversity

Chloé Schmidt, Michael Domaratzki, Riikka Kinnunen, Jeff Bowman & Colin Garroway
Urbanization and associated environmental changes are causing global declines in vertebrate populations. In general, population declines of the magnitudes now detected should lead to reduced effective population sizes for animals living in proximity to humans and disturbed lands. This is cause for concern because effective population sizes set the rate of genetic diversity loss due to genetic drift, the rate of increase in inbreeding, and the efficiency with which selection can act on beneficial alleles....

Winter in water: differential responses and the maintenance of biodiversity

Bailey McMeans, Matthew Guzzo, Paul Blanchfield, Trevor Middel & Mark Ridgway
The ecological consequences of winter in freshwater systems are an understudied but rapidly emerging research area. Here, we argue that winter periods of reduced temperature and light (and potentially oxygen and resources) could play an underappreciated role in mediating the coexistence of species. This may be especially true for temperate and subarctic lakes, where seasonal changes in the thermal environment might fundamentally structure species interactions. With climate change already shortening ice-covered periods on temperate and...

Mixed-stock analysis using Rapture genotyping to evaluate stock-specific exploitation of a walleye population despite weak genetic structure

Peter Euclide, Matthew Faust, Tom MacDougall, Jason Robinson, Chris Wilson, Kuan-Yu Chen, Elizabeth Marschall, Wesley Larson & Stuart Ludsin
Mixed-stock analyses using genetic markers have informed fisheries management in cases where strong genetic differentiation occurs among local spawning populations, yet many fisheries are supported by multiple spawning stocks that are weakly differentiated. Freshwater fisheries exemplify this problem, with many harvested populations supported by multiple stocks of young evolutionary age and that are isolated across small spatial scales. As a result, attempts to conduct genetic mixed-stock analyses of inland fisheries have often been unsuccessful. Advances...

Vascular plant community data for Northwest Territories, Canada

Jennifer Baltzer, Nicola Day, Alison White, Kirsten Reid, Geneviève Degré-Timmons, Steve Cumming, Michelle Mack, Merritt Turetsky, Xanthe Walker & Jill Johnstone
Climate change is altering disturbance regimes outside of historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60m2) in recently burned stands and 133...

Data from: Divergent estimates of herd-wide caribou calf survival: ecological factors and methodological biases

Edward Hance Ellington, Keith P. Lewis, Erin Koen & Eric Vander Wal
Population monitoring is a critical part of effective wildlife management, but methods are prone to biases that can hinder our ability to accurately track changes in populations through time. Calf survival plays an important role in ungulate population dynamics and can be monitored using telemetry and herd composition surveys. These methods, however, are susceptible to unrepresentative sampling and violations of the assumption of equal detectability, respectively. Here we capitalized on 55 herd-wide estimates of woodland...

Data from: Spatial segregation and habitat partitioning of bobcat and Canada lynx

Robby R. Marrotte, Jeff Bowman & Samantha J. Morin
Harvest records suggest that the abundance of bobcats (Lynx rufus) has increased and the leading edge of their distribution has spread northward, while the trailing edge of the Canada lynx (Lynx canadensis) range has contracted in Ontario, Canada. There has been a debate about whether these closely related felids might compete in areas of sympatry, but there is little research on sympatric populations of bobcat and lynx. Both species are found on the north shore...

Data for: Thermal habitat of brook trout in lakes of different size

Darren Smith, Don Jackson & Mark Ridgway
We assessed thermal habitat use of lake-dwelling Brook Trout (Salvelinus fontinalis) populations in 39 lakes of varying size with short-set duration, stratified-random netting surveys in Algonquin Park, Ontario, Canada. Temperature at capture depth was determined from vertical temperature profiles and used as a proxy of Brook Trout temperature selection. Almost all Brook Trout observations fit within their aerobic scope, indicating that our approach adequately captured the distribution of body temperature for this species. However, we...

Data from: Climate connectivity of the bobcat in the Great Lakes region

Robby R. Marrotte, Jeff Bowman & Paul J. Wilson
The Great Lakes and the St. Lawrence River are imposing barriers for wildlife and the additive effect of urban and agricultural development that dominates the lower Great Lakes region likely further reduces functional connectivity for many terrestrial species. As the climate warms species will need to track climate across these barriers. It is important, therefore, to investigate land cover and bioclimatic hypotheses that may explain the northward expansion of species through the Great Lakes. We...

Vocalizations of the squirrel family

Sasha Newar & Jeff Bowman
The dataset Squirrel_Calls is a collection of vocal records (defined as primary literature that numerically describes the vocalization of at least 1 squirrel species) where each row corresponds to a single call type of one species. The details of the row include a summary of the literature metadata, categorical descriptions of the call and the caller as well as numerical values of the call frequencies. The dataset Squirrel_Ecological_Traits is a corresponding set of ecological traits...

Data from: Fine-scale habitat selection by sympatric Canada lynx and bobcat

Samantha Morin, Jeff Bowman, Robby Marrotte & Marie-Josée Fortin
The Canada lynx (Lynx canadensis) and the bobcat (Lynx rufus) are closely related species with overlap at their range peripheries, but the factors that limit each species and the interactions between them are not well understood. Habitat selection is a hierarchical process, in which selection at higher orders (geographic range, home range) may constrain selection at lower orders (within the home range). Habitat selection at a very fine scale within the home range has been...

Data and Code for: Isotopic Niche Size of Coregonus artedi (sensu lato) Increases in the Presence of Mysis diluviana, Expanded Habitat Use and Phenotypic Diversity

Mark Ridgway, Allan Bell, Piette-Lauziere Piette-Lauziere & Julie Turgeon
Post-glacial colonization of lakes in Algonquin Park, Ontario, Canada resulted in food webs with cisco (Coregonus artedi sensu lato) and either Mysis diluviana or Chaoborus spp. as the dominant diel migrator. Mysis as prey, its diel movements and benthic occupancy, are hypothesized to be key elements of ecological opportunity for cisco diversity in the Laurentian Great Lakes. If correct, the hypothesis strongly implies that lakes with Mysis would have greater trophic niche size and drive...

Functional genetic diversity of domestic and wild American mink (Neovison vison )

Kimberley Y. Morris, Jeff Bowman, Albrecht Schulte-Hostedde & Paul J. Wilson
The release of domestic organisms to the wild threatens biodiversity because the introduction of domestic genes through interbreeding can negatively impact wild conspecifics via outbreeding depression. In North America, farmed American mink (Neovison vison) frequently escape captivity, yet the impact of these events on functional genetic diversity of wild mink populations is unclear. We characterized domestic and wild mink in Ontario at 17 microsatellites located in functional genes and in a promoter region that is...

Data from: Spatial and environmental influences on selection in a clock gene coding trinucleotide repeat in Canada lynx (Lynx canadensis)

Melanie Prentice, Jeff Bowman, Dennis Murray, Kamal Khidas & Paul Wilson
Clock genes exhibit substantial control over gene expression and ultimately life-histories using external cues such as photoperiod, and are thus likely to be critical for adaptation to shifting seasonal conditions and novel environments as species redistribute their ranges under climate change. Coding trinucleotide repeats (cTNRs) are found within several clock genes, and may be interesting targets of selection due to their containment within exonic regions and elevated mutation rates. Here, we conduct inter-specific characterization of...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Ontario Ministry of Natural Resources
  • Trent University
  • The Ohio State University
  • University of Toronto
  • Memorial University of Newfoundland
  • Université Laval
  • Wilfrid Laurier University
  • Queens University
  • University of Alaska Fairbanks
  • University of Guelph