8 Works

Data from: Development and validation of targeted environmental DNA (eDNA) metabarcoding for early detection of 69 invasive fishes and aquatic invertebrates

Scott Colborne, Yueyang Wu, Matthew Charron & Daniel Heath
Invasive species are of concern due to their impacts on ecosystems and economies, but they pose significant control challenges. Environmental DNA (eDNA) is a powerful tool in the detection of aquatic organisms at low densities due to high sensitivity and ease of collection. Aquatic eDNA analyses have increased worldwide and are generally either applied to a few target species (quantitative PCR) or for broad taxonomic applications (metabarcoding). Here we describe the development and testing of...

Data from: Passive acoustic monitoring provides reliable under-estimates of population size and longevity in wild Savannah Sparrows

Daniel Mennill
Many breeding birds produce conspicuous sounds, providing tremendous opportunities to study free-living birds through acoustic recordings. Traditional methods for studying population size and demographic features depend on labour-intensive field research. Passive acoustic monitoring provides an alternative method for quantifying population size and demographic parameters, but this approach requires careful validation. To determine the accuracy of passive acoustic monitoring for estimating population size and demographic parameters, we used autonomous recorders to sample an island-living population of...

Complementary genomic and epigenomic adaptation to environmental heterogeneity

Yangchun Gao, Yiyong Chen, Shiguo Li, Xuena Huang, Juntao Hu, Dan G. Bock, Hugh J. MacIsaac & Aibin Zhan
While adaptation is commonly thought to result from selection on DNA sequence-based variation, recent studies have highlighted an analogous epigenetic component as well. However, the relative roles of these mechanisms in facilitating population persistence under environmental heterogeneity remain unclear. To address the underlying genetic and epigenetic mechanisms and their relationship during environmental adaptation, we screened the genomes and epigenomes of nine global populations of a predominately sessile marine invasive tunicate, Botryllus schlosseri. We detected clear...

Cumulative cultural evolution and mechanisms for cultural selection in wild bird songs

Heather Williams, Andrew Scharf, Anna R. Ryba, D. Ryan Norris, Daniel J. Mennill, Amy E. M. Newman, Stéphanie M. Doucet & Julie C. Blackwood
Cumulative cultural evolution, the accumulation of sequential changes within a single socially learned behaviour that results in improved function, is prominent in humans and has been documented in experimental studies of captive animals and managed wild populations. Here, we provide evidence that cumulative cultural evolution has occurred in the learned songs of Savannah sparrows. In a first step, “click trains” replaced “high note clusters” over a period of three decades. We use mathematical modeling to...

Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites

Ryan O'Connor, Audrey Le Pogam, Kevin Young, Oliver Love, Christopher Cox, Gabrielle Roy, Francis Robitaille, Kyle Elliott, Anna Hargreaves, Emily Choy, Grant Gilchrist, Dominique Berteaux, Andrew Tam & François Vézina
Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermoregulatory polygon approach, we derived a reproductive threshold temperature for an Arctic songbird–the snow bunting (Plectrophenax nivalis). We defined this threshold as the temperature at which individuals must reduce activity to suboptimal levels (i.e., < 4-times basal metabolic rate)...

Data from: Interspecific allometric scaling in eDNA production among Northwestern Atlantic bony fishes reflects physiological allometric scaling

Matthew Yates
Relating environmental DNA (eDNA) signal strength to organism abundance requires a fundamental understanding of eDNA production. A number of studies have demonstrated that eDNA production may scale allometrically – that is, larger organisms tend to exhibit lower mass-specific eDNA production rates, likely due to allometric scaling in key processes related to eDNA production (e.g. surface area, excretion/egestion). While most previous studies have examined intra-specific allometry, physiological rates and organism surface area also scale allometrically across...

Ecological data for: Subsidy accessibility drives asymmetric food web responses

Marie Gutgesell, Marie Gutgesell, Bailey McMeans, Matthew Guzzo, Valesca De Groot, Aaron Fisk, Timothy Johnson & Kevin McCann
Global change is fundamentally altering flows of natural and anthropogenic subsidies across space and time. After a pointed call for research on subsidies in the 1990s, an industry of empirical work has documented the ubiquitous role subsidies play in ecosystem structure, stability and function. Here, we argue that physical constraints (e.g., water temperature) and species traits can govern a species’ accessibility to resource subsidies, which has been largely overlooked in the subsidy literature. We examined...

Data from: Empirically testing the influence of light regime on diel activity patterns in a marine predator reveals complex interacting factors shaping behaviour

Luke Storrie, Nigel Hussey, Shannon MacPhee, Greg O'Corry-Crowe, John Iacozza, David Barber & Lisa Loseto
Diel cycles in marine predator diving behaviour centre around the light-mediated diel vertical migration (DVM) of prey, and are considered critical for optimizing foraging and limiting competition across global seascapes. Yet our understanding of predator diel behaviour is based primarily on examining relative depth usage between constant day/night cycles with no formal investigation of how varying light regimes interact with abiotic factors to shape diel activity. The extreme seasonal light regimes (midnight sun, polar night,...

Registration Year

  • 2022

Resource Types

  • Dataset


  • University of Windsor
  • University of Guelph
  • Fudan University
  • University of California, Berkeley
  • Guangdong Academy of Sciences
  • McGill University
  • Washington University in St. Louis
  • Environment Canada
  • University of Manitoba
  • Western University