Effectiveness of 20 years of conservation investments in protecting orangutans

Truly Santika, Julie Sherman, Maria Voigt, Marc Ancrenaz, Serge A. Wich, Kerrie A. Wilson, Hugh P. Possingham, Emily Massingham, Dave J. I. Seaman, Alison M. Ashbury, Taufiq Siddiq Azvi, Graham L. Banes, Elizabeth J. Barrow, David F. R. P. Burslem, Robert A. Delgado, Andi Erman, Gabriella Fredriksson, Benoît Goossens, Max Houghton, Tito P. Indrawan, Ricko L. Jaya, Tomoko Kanamori, Cheryl D. Knott, Ashley Leiman, Darmawan Liswanto, Martin Mach, Andrew J. Marshall, Julien G. A. Martin, Lelyana Midora, Adam E. Miller, Sol Milne, Courtney Morgans, Nardi Nardiyono, Dyah Perwitasari‐Farajallah, Dolly Priatna, Roberto Risch, Galuh Mochammad Riyadi, Anne E. Russon, Juhardi Sembiring, Endro Setiawan, Mohammad Sidiq, Donna Simon, Stephanie Spehar, Matthew J. Struebig, Ibrahim Sumardi, Albertus Tjiu, Rizki Wahyudi, Achmad Yanuar, Erik Meijaard