(Article of periodic en Anglais - 2012)

Document title

Enhancing habitat connectivity in fragmented landscapes : spatial modeling of wildlife crossing structures in transportation networks

Authors(s) and Affiliation(s)

DOWNS J.A. (1) ; HORNER M.W. (2) ;
(1) Dep. of Geography, Environment, and Planning, Univ. of South Florida, Tampa, ETATS-UNIS
(2) Dep. of Geography, Florida State Univ., Tallahassee, ETATS-UNIS


This research develops 2 classes of spatial models for optimally locating crossing structures in situations where the goal is to connect discrete habitat patches that are fragmented by roads. The first group of models uses variations of minimum spanning forest (MSF) problems to select crossing structure locations in scenarios where the goal is to connect all habitat patches in the landscape. This paper explores 3 variations : distance-based, intersection-weighted, and component-based MSFs. The second set of models includes newly developed integer programs with objectives that maximize interpatch connectivity given a fixed number of crossing structures. The AA. illustrated the models using hypothetical landscapes and applied them to a case study in Middlesex County (Massachusetts) where the goal is to connect vernal pool habitat for amphibians, and discuss the relative merits of each approach


Article of periodic

published at : Annals of the Association of American Geographers / ISSN 0004-5608 / CODEN AAAGAK

Editor : Association of American Geographers, Washington, DC - ETATS-UNIS (1911)

Millesime : 2012, vol. 102, no1 [pp. 17-34]

Bibliographic references : 3 p.

Collation : 5 fig., 2 tabl.




Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/00045608.2011.600190

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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