Ecological connectivity analysis to reduce the barrier effect of roads. An innovative graph-theory approach to define wildlife corridors with multiple paths and without bottlenecks

Loro Aguayo, Manuel; Ortega Perez, Emilio; Arce Ruíz, Rosa María y Geneletti, Davide (2015). Ecological connectivity analysis to reduce the barrier effect of roads. An innovative graph-theory approach to define wildlife corridors with multiple paths and without bottlenecks. "Landscape And Urban Planning" (n. 139); pp. 149-162. ISSN 0169-2046. https://doi.org/10.1016/j.landurbplan.2015.03.006.

Descripción

Título: Ecological connectivity analysis to reduce the barrier effect of roads. An innovative graph-theory approach to define wildlife corridors with multiple paths and without bottlenecks
Autor/es:
  • Loro Aguayo, Manuel
  • Ortega Perez, Emilio
  • Arce Ruíz, Rosa María
  • Geneletti, Davide
Tipo de Documento: Artículo
Título de Revista/Publicación: Landscape And Urban Planning
Fecha: 2015
Materias:
Palabras Clave Informales: Graph theory, Least-cost modeling, Functional connectivity, Linear infrastructure planning, Wildlife corridors, Habitat fragmentation, Roe deer
Escuela: E.T.S.I. Montes (UPM) [antigua denominación]
Departamento: Ingeniería y Gestión Forestal y Ambiental
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Ecological connectivity studies should be performed as baseline studies to prevent ecosystem fragmentation during the planning phase of a linear transport infrastructure. A landscape can be simplified as a graph network of habitat patches (nodes) and wildlife corridors (links) that connect them. Our analysis focused on roe deer (Capreolus capreolus L.), one of the large mammals most commonly hit by vehicles on the Spanish road network. We develop a network approach, implementing an iterative GIS methodology to obtain alternative corridors with comparable costs and without bottlenecks below a user-defined minimum width. This method enables the definition of the clearly delimited physical area of corridors according to a geometrical threshold width value, as well as multiple corridor connections for a pair of habitat patches. We compare the connectivity estimated with the least-cost path with our proposed methodology, observing even absence of significant differences at global scale, but not to local scale in our study area. Our results highlight the potential relative importance of each node habitat patch and corridor for the conservation of global connectivity. Finally, we discuss applications for locating habitat restoration as a compensatory measure and potential sites for wildlife crossings, creating new stepping stones and evaluating road layouts using the selected freeway as an example.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaTRA2010-18311Sin especificarUniversidad Politécnica de MadridModelo de integración del trazado de infraestructuras lineales en el paisaje basado en GIS

Más información

ID de Registro: 41048
Identificador DC: http://oa.upm.es/41048/
Identificador OAI: oai:oa.upm.es:41048
Identificador DOI: 10.1016/j.landurbplan.2015.03.006
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0169204615000602
Depositado por: Memoria Investigacion
Depositado el: 09 Sep 2016 14:18
Ultima Modificación: 12 Sep 2016 08:11
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