A model for assessing habitat fragmentation caused by new infrastructures in extensive territories. Evaluation of the impact of the Spanish infrastructure and Transport Plan.

Mancebo Quintana, Santiago and Martín Ramos, Belén and Casermeiro Martínez, Miguel Ángel and Otero Pastor, Isabel (2010). A model for assessing habitat fragmentation caused by new infrastructures in extensive territories. Evaluation of the impact of the Spanish infrastructure and Transport Plan.. "Journal of Environmental Management", v. 91 (n. 5); pp. 1087-1096. ISSN 0301-4797. https://doi.org/10.1016/j.jenvman.2009.12.013.

Description

Title: A model for assessing habitat fragmentation caused by new infrastructures in extensive territories. Evaluation of the impact of the Spanish infrastructure and Transport Plan.
Author/s:
  • Mancebo Quintana, Santiago
  • Martín Ramos, Belén
  • Casermeiro Martínez, Miguel Ángel
  • Otero Pastor, Isabel
Item Type: Article
Título de Revista/Publicación: Journal of Environmental Management
Date: May 2010
ISSN: 0301-4797
Volume: 91
Subjects:
Freetext Keywords: Environmental assessment; Landscape ecology; Connectivity; Geographic information system; GIS; Spain
Faculty: E.T.S.I. Montes (UPM)
Department: Construcción y Vías Rurales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The aim of the present work is to design a model for evaluating the impact of planned infrastructures on species survival at the territorial scale by calculating a connectivity index. The method developed involves determining the effective distance of displacement between patches of the same habitat, simplifying earlier models so that there is no dependence on specific variables for each species. A case study is presented in which the model was used to assess the impact of the forthcoming roads and railways included in the Spanish Strategic Infrastructure and Transport Plan (PEIT, in its Spanish initials). This study took into account the habitats of peninsular Spain, which occupies an area of some 500,000 km2. In this territory, the areas deemed to provide natural habitats are defined by Directive 92/43/EEC. The impact of new infrastructures on connectivity was assessed by comparing two scenarios, with and without the plan, for the major new road and railway networks. The calculation of the connectivity index (CI) requires the use of a raster methodology based on the Arc/Info geographical information system (GIS). The actual calculation was performed using a program written in Arc/Info Macro Language (AML); this program is available in FragtULs (Mancebo Quintana, 2007), a set of tools for calculating indicators of fragmentation caused by transport infrastructure (http://topografia.montes.upm.es/fragtuls.html). The indicator of connectivity proposed allows the estimation of the connectivity between all the patches of a territory, with no artificial (non-ecologically based) boundaries imposed. The model proposed appears to be a useful tool for the analysis of fragmentation caused by plans for large territories.

More information

Item ID: 6993
DC Identifier: http://oa.upm.es/6993/
OAI Identifier: oai:oa.upm.es:6993
DOI: 10.1016/j.jenvman.2009.12.013
Official URL: http://www.sciencedirect.com/science/journal/03014797
Deposited by: Memoria Investigacion
Deposited on: 19 May 2011 08:08
Last Modified: 20 Apr 2016 16:06
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