Protected areas in tropical Africa: assessing threats and conservation activities. oleh Sandra Tranquilli, Michael Abedi-Lartey, Katharine Abernethy, Fidèle Amsini, Augustus Asamoah, Cletus Balangtaa, Stephen Blake, Estelle Bouanga, Thomas Breuer, Terry M Brncic, Geneviève Campbell, Rebecca Chancellor, Colin A Chapman, Tim R B Davenport, Andrew Dunn, Jef Dupain, Atanga Ekobo, Manasseh Eno-Nku, Gilles Etoga, Takeshi Furuichi, Sylvain Gatti, Andrea Ghiurghi, Chie Hashimoto, John A Hart, Josephine Head, Martin Hega, Ilka Herbinger, Thurston C Hicks, Lars H Holbech, Bas Huijbregts, Hjalmar S Kühl, Inaoyom Imong, Stephane Le-Duc Yeno, Joshua Linder, Phil Marshall, Peter Minasoma Lero, David Morgan, Leonard Mubalama, Paul K N'Goran, Aaron Nicholas, Stuart Nixon, Emmanuelle Normand, Leonidas Nziguyimpa, Zacharie Nzooh-Dongmo, Richard Ofori-Amanfo, Babafemi G Ogunjemite, Charles-Albert Petre, Hugo J Rainey, Sebastien Regnaut, Orume Robinson, Aaron Rundus, Crickette M Sanz, David Tiku Okon, Angelique Todd, Ymke Warren, Volker Sommer