Lagabrielle E. auteur aut IRD Rouget M. auteur aut IRD Payet K. auteur aut IRD Wistebaar N. auteur aut IRD Durieux Laurent auteur aut IRD Baret S. auteur aut IRD Lombard A. auteur aut IRD Strasberg D. auteur aut IRD text journalArticle eng text/pdf born digital access Over the last century, island biodiversity has become one of the most threatened in the world. Although many island conservation plans address biodiversity requirements at the species level, few plans address the spatial requirements of the biodiversity processes that underpin the persistence of these species. Using systematic conservation planning principles, we map the spatial components of biodiversity processes (SCBPs) and use these to design broad-scale conservation corridors for Reunion Island. Our method is based upon a literature review, expert knowledge, spatially explicit base data, conservation planning software, and spatial modelling. We combine a target-driven algorithm with least-cost path analyses to delineate optimal corridors for Capturing key biodiversity processes while simultaneously considering biodiversity pattern targets, conservation opportunities, and future threats. We identify five SCBPs: the oceanic-terrestrial interface; riverine corridors: macrohabitat interfaces; the boundaries of isolated topographic units; and lowland-upland gradients. A large proportion of the SCBPs (81.3%) is currently untransformed, whereas 3% is irreversibly transformed by urbanisation and 15.7% is transformed but restorable. However, SCBPs are almost fully disrupted by urbanisation in the lowlands, thereby compromising functional corridors along full altitudinal gradients. This study is a contribution toward the reconciliation of conservation versus development objectives on Reunion Island but we believe that the delineation method is sufficiently general to be applied to other islands. Our results highlight the need for integrating marine, coastal and terrestrial conservation planning as a matter of urgency, given the rapid transformation of coastal areas on islands. specialized Integrated conservation planning Biological processes Island biogeography Corridors Land use modelling Socio-economic cost 082 142 7 1523-1535 2009 0006-3207 https://www.documentation.ird.fr/hor/fdi:010046195 10.1016/j.biocon.2009.02.022 0006-3207 [F B010046195] https://www.documentation.ird.fr/hor/fdi:010046195 https://www.documentation.ird.fr/intranet/publi/2009/07/010046195.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2009-07-24 2017-08-23 fdi:010046195 fre