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Title: Road effects on bat activity depend on surrounding habitat type
Authors: Medinas, Denis
Ribeiro, Vera
Marques, João Tiago
Silva, Bruno
Barbosa, Ana Márcia
Rebelo, Hugo
Mira, António
Issue Date: 2019
Citation: Medinas, Denis; Ribeiro, Vera; Marques, João Tiago; Silva, Bruno; Barbosa, Ana Márcia; Rebelo, Hugo; Mira, António. Road effects on bat activity depend on surrounding habitat type, Science of The Total Environment, 660, 1, 340-347, 2019.
Abstract: The effects of roads on bats are still a poorly documented issue.Most of the available research focuses on large and hightraffic highways, while low-medium-traffic roads are often assumed to have negligible impacts. However, small roads are ubiquitous in landscapes around the world.We examined the effects of these roads, aswell as habitat types, on the activity of three bat guilds (short-, mid- and long-range echolocators) and the most common bat species Pipistrellus kuhlii.We performed three bat acoustic surveys between May and October 2015, with these surveys being performed along twenty transects that were each 1000mlong and perpendicular to three roadswith different trafficvolumes. The surveys were performed in dense Mediterranean woodland (“montado”) and open agricultural field habitats, which were the two dominant land uses. At each transect, bat activity was simultaneously registered at 0, 50, 100, 200, 500 and 1000 m from the road with the use of an ultrasound recorder. According to the generalized linear mixed effects models, the overall activity of bats and of the short- and mid-range echolocators increased with increased distance from the roads and was dependent on the surrounding habitats. In contrast, the long-range echolocators and P. kuhlii were more tolerant to road. Our results also show that the activity was higher in woodland areas, however road verges seem to be a significant habitat in an open agricultural landscape. The major negative effects extended to approximately 300 m from the roads in woodlands and penetrate further into the open field (N500 m).
Other Identifiers: 00489697
Type: article
Appears in Collections:CIBIO-UE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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