Abstract
The eastern red bat (Lasiurus borealis) is widely considered to be in decline, inspiring interest in identifying important habitats for conservation in the eastern United States. Unfortunately, knowledge of important day-roosting habitats is lacking for much of the species’ range. We examined patterns of day-roost selection by male and female eastern red bats at two study sites in southeastern Ohio, U. S. A, to help fill this information gap. We radio-tagged 28 male and 25 female bats during the summers of 2016–2019 and located 53 male and 74 female roosts. Day-roost selection differed between sexes and study areas. In a mostly even-aged forest with significant historical disturbance, we found males and females roosting in trees located at higher elevations, with no clear selection based on tree or stand characteristics. Specifically, males selected trees with larger diameters located at lower, cooler elevations than females, which selected smaller diameter trees found at higher, warmer elevations. However, in a forest with less historical disturbance and more structural diversity, we found sexes differed in how they selected from available habitats. These data show that heterogeneity in environmental conditions can lead to different patterns in selection, even between sites located within a small geographic area. They also show that eastern red bats sexually segregate on the local landscape in the presence of diverse forest conditions but may not do so in the absence of such diversity. We recommend managing forests to maintain structural diversity across an elevational gradient to provide male and female eastern red bats with suitable day-roosting habitat in southeast Ohio.
Highlights
Successful wildlife conservation relies on accurate descriptions of the habitat features and resources that species need to survive and reproduce [1]
We found that daytime habitat selection by eastern red bats in southeast Ohio varied between sexes and between study areas with different forest conditions
Eastern red bat day-roost selection larger, less densely stocked trees, males and females selected day-roosts differently based on tree diameter and elevation
Summary
Successful wildlife conservation relies on accurate descriptions of the habitat features and resources that species need to survive and reproduce [1]. Such descriptions may be difficult to formulate for species with large geographic ranges, as they may occupy a wide range of environmental conditions and ecological communities [2, 3]. Eastern red bat day-roost selection and structure that influences habitat use and quality [4, 5] This can be a challenge for conservation, these patches represent opportunities to study how species utilize or fail to utilize different habitats within the same region, which may help improve management. As the number of factors threating biodiversity continues to increase, improving habitat for wildlife will remain a priority for conservation [6]
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