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Future extinction risk of wetland plants is higher from individual patch loss than total area reduction / David C. Dean in Biological conservation, vol. 209 (Mai 2017)

Public [article]  inBiological conservation > vol. 209 (Mai 2017) . - pp. 27-33 Titre : Future extinction risk of wetland plants is higher from individual patch loss than total area reduction Type de document : texte imprimé Auteurs : David C. Dean, Auteur ; Damien A. Fordham, Auteur ; Fangliang He, Auteur ; Corey Bradshaw (Corey J.A.), Auteur Année de publication : 2017 Article en page(s) : pp. 27-33 Langues : Anglais (eng) Catégories : [habitats/milieux] ZH - Zones humides Mots-clés : perte de zone  Planification de la conservation  risque d'extinction  relation entre espèces  diversité biologique  perte d'habitat Résumé : "Quantifying the risk of extinction due to habitat loss is an increasingly urgent task for the design and implementation of effective conservation interventions. Methods based on species- and endemics-area relationships are well developed, but applications to date have concentrated primarily on the fragmentation of formerly continuous habitats such as forests and woodlands. Applying these area-based methods to predict extinction risk in habitat types occurring naturally as spatially discrete patches has been largely ignored. We address this knowledge gap using a network of seasonally connected wetlands. We modelled the risk of extinction associated with native wetland plant communities under two alternative scenarios: the loss of (i) entire wetlands (patch loss) versus (ii) an equivalent area distributed across the wetlands (area loss). Patch-loss scenarios resulted in more than twice the number of species going extinct than the equivalent loss of area. Extinction due to patch loss was highest when wetlands were removed in increasing size order (smallest to largest) – a plausible scenario arising from forecast climatic drying in the region. Small wetlands contained > 16% of endemic species in only < 5% of wetland area, largely explaining this result. Extinction risk associated with naturally occurring habitat patches depends on the distribution of regionally endemic species; where this is not solely a function of habitat area, the loss of small patches can represent higher risk than an equivalent reduction in total habitat area across the network." (source : auteurs) Type de publication : périodique Référence biblio : Dean D., Fordham D., He F., Bradshaw C., 2017 - Future extinction risk of wetland plants is higher from individual patch loss than total area reduction. Biological conservation, 209 : 27-33. ID PMB : 65411 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65411 [article]

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Conservation genetics in the European Union - Biases, gaps and future directions / Sílvia Pérez-Espona in Biological conservation, vol. 209 (Mai 2017)

Public [article]  inBiological conservation > vol. 209 (Mai 2017) . - pp. 130-136 Titre : Conservation genetics in the European Union - Biases, gaps and future directions Type de document : texte imprimé Auteurs : Sílvia Pérez-Espona, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp. 130-136 Langues : Anglais (eng) Catégories : [ZG] Europe [Thèmes] Biologie de la conservation Mots-clés : biodiversité  politique environnementale  gestion  espèce menacée  génétique Résumé : "The importance of genetic diversity for the assessment and maintenance of biodiversity is widely recognised, although not yet explicitly incorporated into conservation decision making in many European Union Member States. A detailed assessment of 4311 genetic studies relevant for the conservation and management of European species revealed that research is extensive and, therefore, could be more effectively implemented in existing conservation programs. However, research was overly biased towards the study of species with an economic value or iconic status, with research on threatened species or species with undetermined conservation status being scarce. The largest volume of research focused on species identification and relationships, population subdivision and dispersal; with microsatellite and mtDNA sequences as the most widely used markers. These results emphasize the need for further collaboration between researchers and conservation stakeholders to devise genetics research programs that can provide effective solutions for species conservation in Europe." (source : auteurs) Type de publication : périodique Référence biblio : Pérez-Espona S., et al., 2017 - Conservation genetics in the European Union - Biases, gaps and future directions. Biological conservation, 209 : 130-136. ID PMB : 65422 DOI : 10.1016/j.biocon.2017.01.020 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65422 [article]

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