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Limited Heat Tolerance In An Arctic Passerine: Thermoregulatory Implications For Cold-Specialized Birds In A Rapidly Warming World, Ryan S. O'Connor, Audrey Le Pogam, Kevin G. Young, Francis Robitaille, Emily S. Choy, Oliver P. Love, Kyle H. Elliott, Anna L. Hargreaves, Dominique Berteaux, Andrew Tam, François Vézina
Limited Heat Tolerance In An Arctic Passerine: Thermoregulatory Implications For Cold-Specialized Birds In A Rapidly Warming World, Ryan S. O'Connor, Audrey Le Pogam, Kevin G. Young, Francis Robitaille, Emily S. Choy, Oliver P. Love, Kyle H. Elliott, Anna L. Hargreaves, Dominique Berteaux, Andrew Tam, François Vézina
Great Lakes Institute for Environmental Research Publications
Arctic animals inhabit some of the coldest environments on the planet and have evolved physiological mechanisms for minimizing heat loss under extreme cold. However, the Arctic is warming faster than the global average and how well Arctic animals tolerate even moderately high air temperatures (Ta) is unknown. Using flow-through respirometry, we investigated the heat tolerance and evaporative cooling capacity of snow buntings (Plectrophenax nivalis; ≈31 g, N = 42), a cold specialist, Arctic songbird. We exposed buntings to increasing Ta and measured body temperature (Tb), resting metabolic rate (RMR), rates of evaporative water loss (EWL), and evaporative cooling efficiency (the …
No Common Pesticides Detected In Snow Buntings Utilizing A Farmland Landscape In Eastern Québec, Emily Cornelius Ruhs, Oliver P. Love, Louis Drainville, François Vézina
No Common Pesticides Detected In Snow Buntings Utilizing A Farmland Landscape In Eastern Québec, Emily Cornelius Ruhs, Oliver P. Love, Louis Drainville, François Vézina
Great Lakes Institute for Environmental Research Publications
Many species of migratory birds are declining worldwide, including throughout North America. Some of the most cited causes of decline are linked to climate change, urbanization, and growth in agriculture. Across eastern Canada, a number of insecticides and herbicides are commonly sprayed before and during the grain growing season to control pests and foliage competitors. During wintering and migration, a declining Arctic-breeding songbird, the snow bunting (Plectrophenax nivalis), utilizes open farmlands of southern Canada; therefore, this could be a period when the species is most exposed to these pesticides. We tested snow bunting tissues (blood and liver) for the 4 …