[1] Univ Kent, Sch Anthropol & Conservat, Durrell Inst Conservat & Ecol, Canterbury, Kent, England
[2] Univ Kent, Sch Econ, Canterbury, Kent, England
[3] La Trobe Univ, Dept Econ & Finance, Bundoora, Vic, Australia
[4] Madagasikara Voakajy, Antananarivo, Madagascar
[5] Bangor Univ, Sch Environm Nat Resources & Geog, Bangor, Gwynedd, Wales