About the Authors

Erik Meijaard

emeijaard@gmail.com

Affiliations People and Nature Consulting International, Jakarta, Indonesia, School of Biological Sciences, The University of Queensland, Brisbane, Australia, School of Archaeology and Anthropology, Australian National University, Canberra, Australia

Damayanti Buchori

Affiliations The Nature Conservancy – Indonesia Forest Program, Jakarta, and Bogor, Indonesia, Department of Plant Protection, Faculty of Agriculture, Institut Pertanian Bogor, Bogor, Indonesia

Yokyok Hadiprakarsa

Affiliations The Nature Conservancy – Indonesia Forest Program, Jakarta, and Bogor, Indonesia, The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia

Sri Suci Utami-Atmoko

Affiliations The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia, Faculty of Biology, Universitas Nasional, Jakarta, Indonesia

Anton Nurcahyo

Affiliation Borneo Orangutan Survival Foundation, Orangutan Reintroduction Program Central Kalimantan, Palangkaraya, Indonesia

Albertus Tjiu

Affiliations The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia, World Wide Fund for Nature Indonesia, Pontianak, Indonesia

Didik Prasetyo

Affiliation The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia

Nardiyono

Affiliations The Nature Conservancy – Indonesia Forest Program, Jakarta, and Bogor, Indonesia, The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia

Lenny Christie

Affiliation The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia

Marc Ancrenaz

Affiliation Kinabatangan Orang-utan Conservation Project, Sandakan, Sabah, Malaysia

Firman Abadi

Affiliation Borneo Ecology and Biodiversity Conservation Institute (BEBSiC), Samarinda, Indonesia

I Nyoman Gede Antoni

Affiliation Friends of the National Park Foundation (FNFP), Kumai, Indonesia

Dedy Armayadi

Affiliation People Resources and Conservation Foundation (PRCF), Pontianak, Indonesia

Adi Dinato

Affiliation SuaR Institute, Nanga Pinoh, Indonesia

Ella

Affiliation Borneo Orangutan Survival Foundation, Orangutan Reintroduction Program Central Kalimantan, Palangkaraya, Indonesia

Pajar Gumelar

Affiliation BIOMA Foundation, Samarinda, Indonesia

Tito P. Indrawan

Affiliation Gunung Palung Orangutan Conservation Program, Ketapang, Indonesia

Kussaritano

Affiliation Mitra Lingkungan Hidup KalTeng, Palangkaraya, Indonesia

Cecep Munajat

Affiliation Orangutan Foundation International, Pangkalanbun, Indonesia

C. Wawan Puji Priyono

Affiliation Yayasan Dian Tama, Pontianak, Indonesia

Yadi Purwanto

Affiliation Simpur Hutan, Pontianak, Indonesia

Dewi Puspitasari

Affiliation World Wide Fund for Nature Indonesia, Pontianak, Indonesia

M. Syukur Wahyu Putra

Affiliation Yayasan Titian, Pontianak, Indonesia

Abdi Rahmat

Affiliation Yayasan Perhimpunan TeROPONG, Palangkaraya, Indonesia

Harri Ramadani

Affiliation Sylva Indonesia PC.UNTAN, Pontianak, Indonesia

Jim Sammy

Affiliation Yayasan Riak Bumi, Pontianak, Indonesia

Dedi Siswanto

Affiliation Yayasan Cakrawala Indonesia, Palangkaraya, Indonesia

Muhammad Syamsuri

Affiliation Forum Komunikasi Kader Konservasi Indonesia (FK3I) Kalbar, Pontianak, Indonesia

Noviar Andayani

Affiliations The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia, Wildlife Conservation Society, Bogor, Indonesia

Huanhuan Wu

Affiliation School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia

Jessie Anne Wells

Affiliation School of Biological Sciences, The University of Queensland, Brisbane, Australia

Kerrie Mengersen

Affiliation School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KM SSUA AN EM. Performed the experiments: DB YH KM SSUA AN AT DPrasetyo NN LC MA FA INGA DA AD EE PG TPI KK CM CWPP YP DPuspitasari MSWP AR HR JS DS MS NA HW JAW EM. Analyzed the data: DB YH KM HW JAW EM. Contributed reagents/materials/analysis tools: YH KM HW JAW EM. Wrote the paper: DB YH KM EM.