Skip to Main content Skip to Navigation
Journal articles

Mesurer et spatialiser la connectivité pour modéliser les changements des systèmes environnementaux. Approches comparées en écologie du paysage et en géomorphologie

Abstract : Connectivity is a key concept used in several disciplines, such as geomorphology or landscape ecology, to better assess the response of environmental systems to external forces (e.g. climate change or anthropogenic influences). Some metrics of connectivity provides the possibility to understand how sedimentary fluxes (geomorphological networks) and ecological networks (landscape ecology) are spatially organized. We propose in this paper a comparative approach in these two disciplines: especially comparison of metrics that describes connectivity. Although the studied systems are different, we can identify common methodological frames. The properties of ecological networks and sedimentary fluxes can be described through graph theory. The topological pattern of a network through graphs constitutes a first step to measure connectivity patterns by calculating metrics at different scales. We first present an example of a methodological protocol regarding landscape ecology: the example seeks at evaluating the ecological impact of different patterns of urbanization. Second, we present an example focusing on geomorphology, to describe the geomorphic evolution of a catchment in a global warming context. Finally, from a comparison between the two case studies, we show that, in both fields of geomorphology and landscape ecology, the analysis of connectivity constitutes a relevant methodological basis to evaluate the resilience properties of environmental systems in a changing environment.
Complete list of metadatas

Cited literature [76 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01721552
Contributor : Marc Bourgeois <>
Submitted on : Friday, March 2, 2018 - 11:38:48 AM
Last modification on : Thursday, April 30, 2020 - 10:26:04 AM
Document(s) archivé(s) le : Thursday, May 31, 2018 - 4:04:01 PM

File

2017_Bourgeois, Cossart, Fress...
Publisher files allowed on an open archive

Identifiers

Citation

Marc Bourgeois, Etienne Cossart, Mathieu Fressard. Mesurer et spatialiser la connectivité pour modéliser les changements des systèmes environnementaux. Approches comparées en écologie du paysage et en géomorphologie. Géomorphologie : relief, processus, environnement, Groupe français de géomorphologie (GFG), 2017, 23 (4), pp.289 - 308. ⟨10.4000/geomorphologie.11895⟩. ⟨hal-01721552⟩

Share

Metrics

Record views

249

Files downloads

297