Portail documentaire

Assessing the benefits and risks of translocations in changing environments: a genetic perspective / Andrew R. Weeks in Evolutionary applications, 4 (6) (2011) 

Public Citation [article]  inEvolutionary applications > 4 (6) (2011) . - 709-725 Titre : Assessing the benefits and risks of translocations in changing environments: a genetic perspective Type de document : Imprimé Auteurs : Andrew R. Weeks ; Carla M. Sgro ; Andrew Young ; Richard Frankham ; Nicki J. Mitchell ; Kim A. Miller ; Margaret Byrne ; David J. Coates ; Mark D. B. Eldridge ; Paul Sunnucks ; Martin F. Breed ; Elisabeth A. James ; Ary A. Hoffmann Année de publication : 2011 Article en page(s) : 709-725 Langues : Anglais (eng) Catégories : [LOTERRE-Biodiversité] Changement climatique [CBNPMP-Thématique] Conservation et gestion des espèces Résumé : Translocations are being increasingly proposed as a way of conserving biodiversity, particularly in the management of threatened and keystone species, with the aims of maintaining biodiversity and ecosystem function under the combined pressures of habitat fragmentation and climate change. Evolutionary genetic considerations should be an important part of translocation strategies, but there is often confusion about concepts and goals. Here, we provide a classification of translocations based on specific genetic goals for both threatened species and ecological restoration, separating targets based on ‘genetic rescue’ of current population fitness from those focused on maintaining adaptive potential. We then provide a framework for assessing the genetic benefits and risks associated with translocations and provide guidelines for managers focused on conserving biodiversity and evolutionary processes. Case studies are developed to illustrate the framework. Lien pérenne : DOI : 10.1111/j.1752-4571.2011.00192.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149230 Weeks, Andrew R., Sgro, Carla M., Young, Andrew, Frankham, Richard, Mitchell, Nicki J., Miller, Kim A., Byrne, Margaret, Coates, David J., Eldridge, Mark D. B., Sunnucks, Paul, Breed, Martin F., James, Elisabeth A., Hoffmann, Ary A. 2011 Assessing the benefits and risks of translocations in changing environments: a genetic perspective. Evolutionary applications, 4(6): 709-725.

Documents numériques

Consultable Article (2011) URL

Seed supply for broadscale restoration: maximizing evolutionary potential / Linda M. Broadhurst in Evolutionary applications, 1 (4) (2008) 

Public Citation [article]  inEvolutionary applications > 1 (4) (2008) . - 587–597 Titre : Seed supply for broadscale restoration: maximizing evolutionary potential Type de document : Imprimé Auteurs : Linda M. Broadhurst ; Andrew J. Lowe ; David J. Coates ; Saul A. Cunningham ; Maurice McDonald ; Peter A Vesk ; Colin Yates Année de publication : 2008 Article en page(s) : 587–597 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes [CBNPMP-Thématique] Diversité génétique Résumé : Restoring degraded land to combat environmental degradation requires the collection of vast quantities of germplasm (seed). Sourcing this material raises questions related to provenance selection, seed quality and harvest sustainability. Restoration guidelines strongly recommend using local sources to maximize local adaptation and prevent outbreeding depression, but in highly modified landscapes this restricts collection to small remnants where limited, poor quality seed is available, and where harvesting impacts may be high. We review three principles guiding the sourcing of restoration germplasm: (i) the appropriateness of using ‘local’ seed, (ii) sample sizes and population characteristics required to capture sufficient genetic diversity to establish self-sustaining populations and (iii) the impact of over-harvesting source populations. We review these topics by examining current collection guidelines and the evidence supporting these, then we consider if the guidelines can be improved and the consequences of not doing so. We find that the emphasis on local seed sourcing will, in many cases, lead to poor restoration outcomes, particularly at broad geographic scales. We suggest that seed sourcing should concentrate less on local collection and more on capturing high quality and genetically diverse seed to maximize the adaptive potential of restoration efforts to current and future environmental change. Lien pérenne : DOI : 10.1111/j.1752-4571.2008.00045.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149232 Broadhurst, Linda M., Lowe, Andrew J., Coates, David J., Cunningham, Saul A., McDonald, Maurice, Vesk, Peter A, Yates, Colin 2008 Seed supply for broadscale restoration: maximizing evolutionary potential. Evolutionary applications, 1(4): 587–597.

Documents numériques

Consultable Article (2008) URL