Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)

Ecological networks are designed to maintain biodiversity and ecological processes by protecting habitats and their connectivity. Several approaches can be used to define the components of these networks at each stage of their design. These choices are a major source of uncertainty that influence th...

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Autores principales:	Amélie Bernier, Jérôme Théau
Formato:	article
Lenguaje:	FR
Publicado:	Éditions en environnement VertigO 2013
Materias:	ecological corridors ecological networks spatial configuration least-cost path least-cost corridor circuit theory Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/bb5a75d0b0b4419eb402c545decd2a4b
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id	oai:doaj.org-article:bb5a75d0b0b4419eb402c545decd2a4b
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spelling	oai:doaj.org-article:bb5a75d0b0b4419eb402c545decd2a4b2021-12-02T10:00:37ZModélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)1492-844210.4000/vertigo.14105https://doaj.org/article/bb5a75d0b0b4419eb402c545decd2a4b2013-10-01T00:00:00Zhttp://journals.openedition.org/vertigo/14105https://doaj.org/toc/1492-8442Ecological networks are designed to maintain biodiversity and ecological processes by protecting habitats and their connectivity. Several approaches can be used to define the components of these networks at each stage of their design. These choices are a major source of uncertainty that influence the spatial configuration of the networks obtained, but they have not been extensively studied. In this study, several methods were applied to the steps for selecting core areas and designing corridors for the same territory in the Eastern Townships, Quebec. The aim of the study was to design an ecological network suitable for an indicator species, the Pileated Woodpecker (Dryocopus pileatus). Two methods for selecting core areas were tested : a multi-criteria analysis and a habitat suitability index. These two methods, which were also used in the step for creating matrices of resistance to movement, were combined with three methods to design corridors : least-cost path, least-cost corridor, and circuit theory. Six ecological networks were created and compared. The results show considerable differences in the spatial configuration of the networks, whether in terms of the area and perimeter of different elements or the corridor width. These results are discussed in relation to two limiting factors for these methodological steps, which are data availability and the representativeness of the models. We also provide suggestions to help decision makers facing the many possible scenarios for ecological networks.Amélie BernierJérôme ThéauÉditions en environnement VertigOarticleecological corridorsecological networksspatial configurationleast-cost pathleast-cost corridorcircuit theoryEnvironmental sciencesGE1-350FRVertigO, Vol 13, Iss 2 (2013)
institution	DOAJ
collection	DOAJ
language	FR
topic	ecological corridors ecological networks spatial configuration least-cost path least-cost corridor circuit theory Environmental sciences GE1-350
spellingShingle	ecological corridors ecological networks spatial configuration least-cost path least-cost corridor circuit theory Environmental sciences GE1-350 Amélie Bernier Jérôme Théau Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
description	Ecological networks are designed to maintain biodiversity and ecological processes by protecting habitats and their connectivity. Several approaches can be used to define the components of these networks at each stage of their design. These choices are a major source of uncertainty that influence the spatial configuration of the networks obtained, but they have not been extensively studied. In this study, several methods were applied to the steps for selecting core areas and designing corridors for the same territory in the Eastern Townships, Quebec. The aim of the study was to design an ecological network suitable for an indicator species, the Pileated Woodpecker (Dryocopus pileatus). Two methods for selecting core areas were tested : a multi-criteria analysis and a habitat suitability index. These two methods, which were also used in the step for creating matrices of resistance to movement, were combined with three methods to design corridors : least-cost path, least-cost corridor, and circuit theory. Six ecological networks were created and compared. The results show considerable differences in the spatial configuration of the networks, whether in terms of the area and perimeter of different elements or the corridor width. These results are discussed in relation to two limiting factors for these methodological steps, which are data availability and the representativeness of the models. We also provide suggestions to help decision makers facing the many possible scenarios for ecological networks.
format	article
author	Amélie Bernier Jérôme Théau
author_facet	Amélie Bernier Jérôme Théau
author_sort	Amélie Bernier
title	Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
title_short	Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
title_full	Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
title_fullStr	Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
title_full_unstemmed	Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)
title_sort	modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en estrie (québec, canada)
publisher	Éditions en environnement VertigO
publishDate	2013
url	https://doaj.org/article/bb5a75d0b0b4419eb402c545decd2a4b
work_keys_str_mv	AT ameliebernier modelisationdereseauxecologiquesetimpactsdeschoixmethodologiquessurleurconfigurationspatialeanalysedecasenestriequebeccanada AT jerometheau modelisationdereseauxecologiquesetimpactsdeschoixmethodologiquessurleurconfigurationspatialeanalysedecasenestriequebeccanada
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Modélisation de réseaux écologiques et impacts des choix méthodologiques sur leur configuration spatiale : analyse de cas en Estrie (Québec, Canada)

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