DSpace

Digital.CSIC > Recursos Naturales > Estación Biológica de Doñana (EBD) > (EBD) Artículos >

Share

EndNote

Impact

Open Access item Individual spatial responses towards roads: implications for mortality risk

Authors:Grilo, Clara
Sousa, Joana
Ascensão, Fernando
Leitão, Inês
Pinheiro, Paula
Costa, Mónica
Bernardo, João
Reto, D.
Lourenço, Rui
Santos-Reis, Margarida
Revilla, Eloy
Issue Date:2012
Publisher:Public Library of Science
Citation:Plos One. Open acces 9: e43811 (2012)
Abstract:Background: Understanding the ecological consequences of roads and developing ways to mitigate their negative effects has become an important goal for many conservation biologists. Most mitigation measures are based on road mortality and barrier effects data. However, studying fine-scale individual spatial responses in roaded landscapes may help develop more cohesive road planning strategies for wildlife conservation. Methodology/Principal Findings: We investigated how individuals respond in their spatial behavior toward a highway and its traffic intensity by radio-tracking two common species particularly vulnerable to road mortality (barn owl Tyto alba and stone marten Martes foina). We addressed the following questions: 1) how highways affected home-range location and size in the immediate vicinity of these structures, 2) which road-related features influenced habitat selection, 3) what was the role of different road-related features on movement properties, and 4) which characteristics were associated with crossing events and road-kills. The main findings were: 1) if there was available habitat, barn owls and stone martens may not avoid highways and may even include highways within their home-ranges; 2) both species avoided using areas near the highway when traffic was high, but tended to move toward the highway when streams were in close proximity and where verges offered suitable habitat; and 3) barn owls tended to cross above-grade highway sections while stone martens tended to avoid crossing at leveled highway sections. Conclusions: Mortality may be the main road-mediated mechanism that affects barn owl and stone marten populations. Fine-scale movements strongly indicated that a decrease in road mortality risk can be realized by reducing sources of attraction, and by increasing road permeability through measures that promote safe crossings.
URI:http://hdl.handle.net/10261/58498
Identifiers:doi: doi:10.1371/journal.pone.0043811
issn: 1817-101X
Appears in Collections:(EBD) Artículos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.