6 Works

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)...

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...

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...

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...

Lewis Acid Assisted Brønsted Acid Catalysed Decarbonylation of Isocyanates: A Combined DFT and Experimental Study - data

Ayan Dasgupta, Yara Van Ingen, Michael G Guerzoni, Kaveh Farshadfar, Jeremy Rawson, Emma Richards, Alireza Ariafard & Rebecca Melen
An efficient and mild reaction protocol for the decarbonylation of isocyanates has been developed using catalytic amounts of Lewis acidic boranes. Detailed DFT studies were undertaken to account for the formation of the mono/di-carboxamidation products and benzoxazolone compounds. The dataset includes compound characterisation data for the compounds synthesised in this work.

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...

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  • University of Windsor
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