Fringed bat COSEWIC assessment and status report: chapter 8

Limiting Factors and Threats

With so little known about this species’ biology in Canada, it is difficult to define any threats or limiting factors. Given this species’ diverse and flexible roosting habits in the United States, roosting habitat may not be limiting. Most of the threats are generic such as disturbance to maternity colonies in buildings, disturbance of night roosts in mines or other manmade structures, and the impact of pesticides on invertebrate prey. If the Fringed Bat is dependent on riparian habitats for foraging, then the loss of wetland and riparian ecosystems throughout the grasslands of British Columbia could be a threat. Although disturbance at hibernacula is a major conservation concern for many temperate bats, the location of the Canadian population in winter is unknown.

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