Faure-LacroixDesrochersImbeauEtAl2020

Référence

Faure-Lacroix, J., Desrochers, A., Imbeau, L., Simard, A. (2020) Long-term changes in bat activity in Quebec suggest climatic responses and summer niche partitioning associated with white-nose syndrome. Ecology and Evolution, 10(12):5226-5239. (URL )

Résumé

Abstract In North America, the greatest and most sudden threat to hibernating bats is white-nose syndrome (WNS), which has caused massive declines in populations since 2006. Other determinants of bat dynamics, such as the climate, and the effect of reduction in the number of individuals sharing foraging space and summer roosting habitat may have an effect on population dynamics. We analyzed transect acoustic bat surveys conducted with ultrasonic detectors in 16 regions in Quebec, Canada, between 2000 and 2015. We used piecewise regression to describe changes in activity over time for each species and a meta-analytic approach to measure its association with the North Atlantic Oscillation (NAO). As expected, mouse-eared bat (Myotis spp.) activity sharply declined after the onset of WNS, down by 79\% after 3 years. In contrast, big brown/silver-haired bat activity increased over the same period, possibly due to a release of competition. Hoary bats and red bats remained present, although their activity did not increase. Myotis activity was positively correlated with a one-year lag to the NAO index, associated with cold conditions in winter, but warm autumns. Big brown/silver-haired and hoary bats were also more active during NAO-positive years but without a lag. We conclude that combinations of threats may create rapid shifts in community compositions and that a more balanced research agenda that integrates a wider range of threats would help better understand and manage those changes.

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@ARTICLE { Faure-LacroixDesrochersImbeauEtAl2020,
    AUTHOR = { Faure-Lacroix, J. and Desrochers, A. and Imbeau, L. and Simard, A. },
    TITLE = { Long-term changes in bat activity in Quebec suggest climatic responses and summer niche partitioning associated with white-nose syndrome },
    JOURNAL = { Ecology and Evolution },
    YEAR = { 2020 },
    VOLUME = { 10 },
    NUMBER = { 12 },
    PAGES = { 5226-5239 },
    ABSTRACT = { Abstract In North America, the greatest and most sudden threat to hibernating bats is white-nose syndrome (WNS), which has caused massive declines in populations since 2006. Other determinants of bat dynamics, such as the climate, and the effect of reduction in the number of individuals sharing foraging space and summer roosting habitat may have an effect on population dynamics. We analyzed transect acoustic bat surveys conducted with ultrasonic detectors in 16 regions in Quebec, Canada, between 2000 and 2015. We used piecewise regression to describe changes in activity over time for each species and a meta-analytic approach to measure its association with the North Atlantic Oscillation (NAO). As expected, mouse-eared bat (Myotis spp.) activity sharply declined after the onset of WNS, down by 79\% after 3 years. In contrast, big brown/silver-haired bat activity increased over the same period, possibly due to a release of competition. Hoary bats and red bats remained present, although their activity did not increase. Myotis activity was positively correlated with a one-year lag to the NAO index, associated with cold conditions in winter, but warm autumns. Big brown/silver-haired and hoary bats were also more active during NAO-positive years but without a lag. We conclude that combinations of threats may create rapid shifts in community compositions and that a more balanced research agenda that integrates a wider range of threats would help better understand and manage those changes. },
    DOI = { 10.1002/ece3.6194 },
    EPRINT = { https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6194 },
    KEYWORDS = { Chiroptera, climate, monitoring transects, white-nose syndrome },
    OWNER = { Daniel Lesieur },
    TIMESTAMP = { 2020-06-26 },
    URL = { https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.6194 },
}

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