Estimating population density of insectivorous bats based on stationary acoustic detectors: A case study ...

• Main Authors: Milchram, Markus, Suarez‐Rubio, Marcela, Schröder, Annika, Bruckner, Alexander
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Mammalia; Chiroptera; Chordata; Animalia; bats; bat; Myotis nattereri; Natterer's bat; Pipistrellus pipistrellus
• Online Access: https://dx.doi.org/10.5281/zenodo.13443387; https://zenodo.org/doi/10.5281/zenodo.13443387

(Uploaded by Plazi for the Bat Literature Project) Abstract Automated recording units are commonly used by consultants to assess environmental impacts and to monitor animal populations. Although estimating population density of bats using stationary acoustic detectors is key for evaluating environmental impacts, estimating densities from call activity data is only possible through recently developed numerical methods, as the recognition of calling individuals is impossible. We tested the applicability of generalized random encounter models (gREMs) for determining population densities of three bat species (Common pipistrelle Pipistrellus pipistrellus , Northern bat Eptesicus nilssonii , and Natterer's bat Myotis nattereri ) based on passively collected acoustical data. To validate the results, we compared them to (a) density estimates from the literature and to (b) Royle–Nichols (RN) models of detection/nondetection data. Our estimates for M. nattereri matched both the published data and RN‐model results. For ...