Biodiversité

Le Royaume-Uni serait l’un des pays les plus dépourvus de nature sauvage au monde. Le maire de Londres vient tout juste d’annoncer qu’un couple de castors sera bientôt réintroduit dans l’ouest de la ville. Mais quelles sont les chances de succès de ce genre d’opérations de rewilding ? Des chercheurs nous apportent quelques réponses.

The ongoing recovery of terrestrial large carnivores in North America and Europe is accompanied by intense controversy. On the one hand, reestablishment of large carnivores entails a recovery of their most important ecological role, predation. On the other hand, societies are struggling to relearn how to live with apex predators that kill livestock, compete for game species, and occasionally injure or kill people. Those responsible for managing these species and mitigating conflict often lack fundamental information due to a long-standing challenge in ecology: How do we draw robust population-level inferences for elusive animals spread over immense areas? Here we showcase the application of an effective tool for spatially explicit tracking and forecasting of wildlife population dynamics at scales that are relevant to management and conservation.

We illustrate how to build spaces of interactions between research and management. We present two case studies we conducted through a long-term collaboration between the Centre for Functional and Evolutionary Ecology (CEFE; academic/science—a public research laboratory mostly focused on basic ecological questions) and the French Biodiversity Agency (OFB; non-academic/management—a public institute dedicated to biodiversity protection and restauration, under administrative supervision of ecology and agriculture ministries) with biodiversity monitoring in national parks and management of large carnivores in France.

The recent recovery of large carnivores in Europe has been explained as resulting from a decrease in human persecution driven by widespread rural land abandonment, paralleled by forest cover increase and the consequent increase in availability of shelter and prey. We investigated whether land cover and human population density changes are related to the relative probability of occurrence of three European large carnivores: the grey wolf (Canis lupus), the Eurasian lynx (Lynx lynx) and the brown bear (Ursus arctos).

Suite à la clôture de la campagne de suivi du loup (Canis Lupus) le 31 mars dernier, et après compilation et évaluation des données recueillies par ses membres, le réseau Loup/Lynx de l’Office national de la chasse et de la faune sauvage (ONCFS) publie le bilan du suivi hivernal de la population de loups en France pour l’hiver 2017/2018.