Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable

National, European and international commitments have been made to maintain and restore the connectivity of natural habitats to face habitat loss and fragmentation. Meanwhile, environmental policies in different countries worldwide have proposed the mitigation hierarchy to reach the goal of "no...

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Autores principales:	Laurent Bergès, Catherine Avon, Lucie Bezombes, Céline Clauzel, Rémi Duflot, Jean-Christophe Foltête, Stéphanie Gaucherand, Xavier Girardet, Thomas Spiegelberger
Formato:	article
Lenguaje:	FR
Publicado:	Éditions en environnement VertigO 2019
Materias:	conservation policy no net loss of biodiversity environmental impact assessment green and blue infrastructure landscape graphs amount of reachable habitat Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/febc688bb5fc4059bdd3293a0112da37
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spelling	oai:doaj.org-article:febc688bb5fc4059bdd3293a0112da372021-12-02T10:01:26ZIntégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable1492-844210.4000/vertigo.25733https://doaj.org/article/febc688bb5fc4059bdd3293a0112da372019-10-01T00:00:00Zhttp://journals.openedition.org/vertigo/25733https://doaj.org/toc/1492-8442National, European and international commitments have been made to maintain and restore the connectivity of natural habitats to face habitat loss and fragmentation. Meanwhile, environmental policies in different countries worldwide have proposed the mitigation hierarchy to reach the goal of "no net loss (NNL) of biodiversity". The mitigation hierarchy aims at assessing all the ecological impacts of a development project, but the impacts on landscape connectivity are not properly addressed. We propose an operational framework to assess the environmental impacts of a development project on landscape habitat connectivity. This framework is based on graph theory and the equivalent connectivity index EC of "amount of reachable habitat", which takes into account the total amount of habitat, the spatial configuration of habitat patches and the dispersal capacities of the species. We redefine the three main issues of the mitigation hierarchy regarding "no net loss of connectivity". Then, this framework was applied to a simple, virtual network case where several scenarios of impact avoidance, reduction and compensation were tested and compared. We discuss the benefits and limitations of this approach for the mitigation hierarchy and provide practical recommendations for implementation. In conclusion, we advocate and justify a better integration of the three main biodiversity conservation policies in France : the law for the recovery of biodiversity, nature and landscapes, the SRADDET and the strategy for the establishment of protected areas.Laurent BergèsCatherine AvonLucie BezombesCéline ClauzelRémi DuflotJean-Christophe FoltêteStéphanie GaucherandXavier GirardetThomas SpiegelbergerÉditions en environnement VertigOarticleconservation policyno net loss of biodiversityenvironmental impact assessmentgreen and blue infrastructurelandscape graphsamount of reachable habitatEnvironmental sciencesGE1-350FRVertigO, Vol 19, Iss 2 (2019)
institution	DOAJ
collection	DOAJ
language	FR
topic	conservation policy no net loss of biodiversity environmental impact assessment green and blue infrastructure landscape graphs amount of reachable habitat Environmental sciences GE1-350
spellingShingle	conservation policy no net loss of biodiversity environmental impact assessment green and blue infrastructure landscape graphs amount of reachable habitat Environmental sciences GE1-350 Laurent Bergès Catherine Avon Lucie Bezombes Céline Clauzel Rémi Duflot Jean-Christophe Foltête Stéphanie Gaucherand Xavier Girardet Thomas Spiegelberger Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
description	National, European and international commitments have been made to maintain and restore the connectivity of natural habitats to face habitat loss and fragmentation. Meanwhile, environmental policies in different countries worldwide have proposed the mitigation hierarchy to reach the goal of "no net loss (NNL) of biodiversity". The mitigation hierarchy aims at assessing all the ecological impacts of a development project, but the impacts on landscape connectivity are not properly addressed. We propose an operational framework to assess the environmental impacts of a development project on landscape habitat connectivity. This framework is based on graph theory and the equivalent connectivity index EC of "amount of reachable habitat", which takes into account the total amount of habitat, the spatial configuration of habitat patches and the dispersal capacities of the species. We redefine the three main issues of the mitigation hierarchy regarding "no net loss of connectivity". Then, this framework was applied to a simple, virtual network case where several scenarios of impact avoidance, reduction and compensation were tested and compared. We discuss the benefits and limitations of this approach for the mitigation hierarchy and provide practical recommendations for implementation. In conclusion, we advocate and justify a better integration of the three main biodiversity conservation policies in France : the law for the recovery of biodiversity, nature and landscapes, the SRADDET and the strategy for the establishment of protected areas.
format	article
author	Laurent Bergès Catherine Avon Lucie Bezombes Céline Clauzel Rémi Duflot Jean-Christophe Foltête Stéphanie Gaucherand Xavier Girardet Thomas Spiegelberger
author_facet	Laurent Bergès Catherine Avon Lucie Bezombes Céline Clauzel Rémi Duflot Jean-Christophe Foltête Stéphanie Gaucherand Xavier Girardet Thomas Spiegelberger
author_sort	Laurent Bergès
title	Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
title_short	Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
title_full	Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
title_fullStr	Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
title_full_unstemmed	Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
title_sort	intégrer la connectivité paysagère dans la séquence erc : une approche par la quantité d'habitat atteignable
publisher	Éditions en environnement VertigO
publishDate	2019
url	https://doaj.org/article/febc688bb5fc4059bdd3293a0112da37
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Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable

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