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Landscape planning and defragmentation measures: an assessment of costs and critical issues

De Montis, Andrea and Ledda, Antonio and Ortega Pérez, Emilio and Belén, Martín Ramos and Serra, Vittorio (2018) Landscape planning and defragmentation measures: an assessment of costs and critical issues. Land Use Policy, Vol. 72 , p. 313-324. ISSN 0264-8377. Article.

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DOI: 10.1016/j.landusepol.2017.12.068


Defragmentation, i.e. the systematic action of reconnecting even smaller and more isolated landscape patches, is a major concern for landscape analysists and planners. Landscape fragmentation (LF) can jeopardize both ecosystem continuity and quality. Transport and mobility infrastructures (TMIs) are considered one of the main causes of LF and trigger negative effects, such as death of wild animals killed by vehicular traffic, and decrease of landscape connectivity. The effectiveness of defragmentation actions can be monitored through indices, such as the Infrastructural Fragmentation Index (IFI) and, as a counterpart, the connectivity index (CI). In this paper, we aim at illustrating the effect of defragmentation actions based on the use of wildlife crossing structures (WCSs). WCSs are targeted for the wild boar and ideally located at different linear densities in the fragmented and car accidents very rich landscape unit of Alghero, Sardinia, Italy. Results demonstrate that the higher the WCSs’ density the higher the defragmentation effect and that the average cost of defragmentation increases for scenarios with denser WCSs.

Item Type:Article
ID Code:11921
Uncontrolled Keywords:Defragmentation, wild boar, wildlife crossing structures, infrastructural fragmentation index, continuity index
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/10 Costruzioni rurali e territorio agroforestale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Publisher:Pergamon / Elsevier
Deposited On:06 Feb 2018 13:27

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