La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Serving two masters: Reconciling economic and biodiversity outcomes of brushtail possum (Trichosurus vulpecula) fur harvest in an indigenous New Zealand forest
Auteurs :	Christopher Jones, Auteur ; Mandy Barron, Auteur ; Bruce Warburton, Auteur ; Morgan Coleman, Auteur ; Philip O'B Lyver, Auteur ; Graham Nugent, Auteur
Type de document :	Article
Dans :	Biological Conservation (153 SEP 2012)
Article en page(s) :	143-152
Langues:	Anglais
Résumé :	Introduced brushtail possums (Trichosurus vulpecula) cause significant damage to biodiversity values in New Zealand native forests, but their fur and skins also represent an economic resource, particularly to small, predominantly rural Maori (indigenous people of New Zealand) communities. We used harvester interviews, trapping data and a combination of economic and spatial population models to ask whether the seemingly contradictory goals of economically-sustainable harvest and biodiversity protection can both be accommodated in native podocarp-dominated forests in the North Island of New Zealand. Harvesters expected trap-catch indices (TCIs) of 50-70% when initiating a trap-line, stopped trapping when pull-out trap-catch index (POTCI) was 26% (range 20-30%), and left trapped areas for at least 1 year before returning. The effective trapping distance around a trap-line was 200 m and the decline in possum captures on a line over 24 harvest-days declined exponentially from an initial 63% on day 2 to under 8% from day

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...