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Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
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Individual spatial responses towards roads: implications for mortality risk.

Clara Grilo1, Joana Sousa, Fernando Ascensão

  • 1Centro de Biologia Ambiental, University of Lisboa, Lisboa, Portugal. claragrilo@ua.pt

Plos One
|September 13, 2012
PubMed
Summary
This summary is machine-generated.

Roads impact wildlife, but barn owls and stone martens may use highway habitats if available. Reducing attractions and improving safe crossings can decrease road mortality for these species.

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Area of Science:

  • Wildlife ecology
  • Conservation biology
  • Road ecology

Background:

  • Roads pose significant ecological challenges, including mortality and habitat fragmentation.
  • Mitigation strategies often focus on road mortality and barrier effects.
  • Understanding fine-scale spatial responses to roads is crucial for effective wildlife conservation planning.

Purpose of the Study:

  • To investigate how highways and traffic intensity influence the spatial behavior of barn owls (Tyto alba) and stone martens (Martes foina).
  • To determine factors influencing habitat selection and movement patterns near roads.
  • To identify characteristics associated with wildlife crossing events and road-kills.

Main Methods:

  • Radio-tracking of barn owls and stone martens to study their spatial behavior.
  • Analysis of home-range size and location in relation to highways.
  • Assessment of road-related features influencing habitat selection and movement.

Main Results:

  • Barn owls and stone martens may not avoid highways and can incorporate them into their home ranges if suitable habitat is present.
  • Both species avoided high-traffic areas but were attracted to highways near streams or with suitable verge habitats.
  • Barn owls preferred crossing above-grade highway sections, while stone martens avoided leveled sections.

Conclusions:

  • Road mortality is a primary threat to barn owl and stone marten populations.
  • Reducing attraction sources and increasing road permeability can lower road mortality risk.
  • Fine-scale movement data informs strategies for safer wildlife crossings and improved road planning.