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Resource Documents: Canada (33 items)
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Rigorous Method of Addressing Wind Turbine Noise
Author: Palmer, William
Numerous papers, including some by this author, have identified what are dismissed with disdain as “anecdotal reports” of adverse impacts that occurred with the start up of wind turbines in the environment of those impacted. However, there is a solid basis for presenting such lists. It mirrors the approach taken by most medical doctors when a patient first presents himself or herself with a new adverse health complaint. Taking a patient “history” is the way most doctors begin. Similarly, engineers . . .
More »Bat Mortality Due to Wind Turbines in Canada
Author: Zimmerling, Ryan; and Francis, Charles
ABSTRACT: Wind turbines have been hypothesized to affect bat populations; however, no comprehensive analysis of bat mortality from the operation of wind turbines in Canada has been conducted. We used data from carcass searches for 64 wind farms, incorporating correction factors for scavenger removal, searcher efficiency, and carcasses that fell beyond the area searched to estimate bat collision mortality associated with wind turbines in Canada. On average, 15.5 ± 3.8 (95% CI) bats were killed per turbine per year at these sites (range . . .
More »Origins and migratory patterns of bats killed by wind turbines in southern Alberta: evidence from stable isotopes
Author: Baerwald, Erin; Patterson, Bill; and Barclay, Robert
Abstract. Large numbers of migratory bats are killed every autumn at wind energy facilities in North America. While this may be troubling from a population perspective, these fatalities provide an opportunity to learn more about bat migration and the origins and summer distributions of migratory bats by using endogenous markers. Such markers include stable isotope values, which have been used to answer questions about ecological systems, such as trophic levels and food webs, and the origins and migratory routes of . . .
More »Fatalities at wind turbines may threaten population viability of a migratory bat
Author: Frick, Winifred; Baerwald, Erin; Pollock, Jacob; Barclay, Robert; Szymanski, Jennifer; et al.
Abstract: Large numbers of migratory bats are killed every year at wind energy facilities. However, population-level impacts are unknown as we lack basic demographic information about these species. We investigated whether fatalities at wind turbines could impact population viability of migratory bats, focusing on the hoary bat (Lasiurus cinereus), the species most frequently killed by turbines in North America. Using expert elicitation and population projection models, we show that mortality from wind turbines may drastically reduce population size and increase . . .
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