title: Managing Conflict between Bats and Humans: The Response of Soprano Pipistrelles (Pipistrellus pygmaeus) to Exclusion from Roosts in Houses.
abstract: Conflict can arise when bats roost in human dwellings and householders are affected adversely by their presence. In the United Kingdom, the exclusion of bats from roosts can be licensed under exceptional circumstances to alleviate conflict, but the fate of excluded bats and the impact on their survival and reproduction is not well understood. Using radio-tracking, we investigated the effects of exclusion on the soprano pipistrelle Pipistrellus pygmaeus, a species that commonly roosts in buildings in Europe. Exclusions were performed under licence at five roosts in England in spring, when females were in the early stages of pregnancy. Following exclusion, all bats found alternative roosts and colonies congregated in nearby known roosts that had been used by radio-tagged bats prior to exclusion. We found no difference in roosting behaviour before and after exclusion. Both the frequency of roost switching and the type of roosts used by bats remained unchanged. We also found no change in foraging behaviour. Bats foraged in the same areas, travelled similar distances to reach foraging areas and showed similar patterns of habitat selection before and after exclusion. Population modelling suggested that any reduction in survival following exclusion could have a negative impact on population growth, whereas a reduction in productivity would have less effect. While the number of soprano pipistrelle exclusions currently licensed each year is likely to have little effect on local populations, the cumulative impacts of licensing the destruction of large numbers of roosts may be of concern.
authors.affiliation: School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom.
authors.forename: Emma
authors.initials: E
authors.lastname: Stone
authors.affiliation: School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom.
authors.forename: Matt R K
authors.initials: MR
authors.lastname: Zeale
authors.affiliation: British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, United Kingdom.
authors.forename: Stuart E
authors.initials: SE
authors.lastname: Newson
authors.affiliation: Graduate School of Education, and Centre for Multilevel Modelling, University of Bristol, 2 Priory Road, Bristol, BS8 1TX, United Kingdom.
authors.forename: William J
authors.initials: WJ
authors.lastname: Browne
authors.affiliation: School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom.
authors.forename: Stephen
authors.initials: S
authors.lastname: Harris
authors.affiliation: School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom.
authors.forename: Gareth
authors.initials: G
authors.lastname: Jones
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002685:Chiroptera / Q000502:physiology*; D017753:Ecosystem; D004739:England; D006799:Housing, Animal; D006801:Humans; D012621:Seasons