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Mitani JC, Abwe E, Campbell G, Giles-Vernick T, Goldberg T, McLennan MR, Preuschoft S, Supriatna J, Marshall AJ. Future coexistence with great apes will require major changes to policy and practice. Nat Hum Behav 2024; 8:632-643. [PMID: 38374442 DOI: 10.1038/s41562-024-01830-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 12/21/2023] [Indexed: 02/21/2024]
Abstract
The great apes-bonobos, chimpanzees, gorillas and orangutans-are critically threatened by human activities. We have destroyed their habitats, hunted them and transmitted fatal diseases to them. Yet we also conduct research on them, try to protect them and live alongside them. They are endangered, and time is running out. Here we outline what must be done to ensure that future generations continue to share this planet with great apes. We urge dialogue with those who live with great apes and interact with them often. We advocate conservation plans that acknowledge the realities of climate change, economic drivers and population growth. We encourage researchers to use technology to minimize risks to great apes. Our proposals will require substantial investment, and we identify ways to generate these funds. We conclude with a discussion of how field researchers might alter their work to protect our closest living relatives more effectively.
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Affiliation(s)
- John C Mitani
- Department of Anthropology, University of Michigan, Ann Arbor, MI, USA.
- Ngogo Chimpanzee Project, Phoenix, AZ, USA.
| | - Ekwoge Abwe
- San Diego Zoo Wildlife Alliance, Escondido, CA, USA
- Cameroon Biodiversity Association, Douala, Cameroon
| | | | - Tamara Giles-Vernick
- Anthropology and Ecology of Disease Emergence Unit, Institut Pasteur/Université Paris Cité, Paris, France
| | - Tony Goldberg
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
| | - Matthew R McLennan
- Bulindi Chimpanzee and Community Project, Hoima, Uganda
- Faculty of Humanities and Social Sciences, Oxford Brookes University, Oxford, UK
| | | | - Jatna Supriatna
- Department of Biology, Faculty of Mathematics and Sciences, University of Indonesia, Depok, West Java, Indonesia
| | - Andrew J Marshall
- Department of Anthropology, University of Michigan, Ann Arbor, MI, USA
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA
- Program in the Environment, University of Michigan, Ann Arbor, MI, USA
- School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
- Program in Computing for the Arts and Sciences, University of Michigan, Ann Arbor, MI, USA
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2
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Oxley AS, Donati G, Hill CM. What Works and What Doesn’t Work? The Challenges of Doing Effective Applied Conservation Research in Human-Modified Habitats. INT J PRIMATOL 2022. [DOI: 10.1007/s10764-022-00336-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Restoring the orangutan in a Whole- or Half-Earth context. ORYX 2022. [DOI: 10.1017/s003060532200093x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Abstract
Various global-scale proposals exist to reduce the loss of biological diversity. These include the Half-Earth and Whole-Earth visions that respectively seek to set aside half the planet for wildlife conservation or to diversify conservation practices fundamentally and change the economic systems that determine environmental harm. Here we assess these visions in the specific context of Bornean orangutans Pongo pygmaeus and their conservation. Using an expert-led process we explored three scenarios over a 10-year time frame: continuation of Current Conditions, a Half-Earth approach and a Whole-Earth approach. In addition, we examined a 100-year population recovery scenario assuming 0% offtake of Bornean orangutans. Current Conditions were predicted to result in a population c. 73% of its current size by 2032. Half-Earth was judged comparatively easy to achieve and predicted to result in an orangutan population of c. 87% of its current size by 2032. Whole-Earth was anticipated to lead to greater forest loss and ape killing, resulting in a prediction of c. 44% of the current orangutan population for 2032. Finally, under the recovery scenario, populations could be c. 148% of their current size by 2122. Although we acknowledge uncertainties in all of these predictions, we conclude that the Half-Earth and Whole-Earth visions operate along different timelines, with the implementation of Whole-Earth requiring too much time to benefit orangutans. None of the theorized proposals provided a complete solution, so drawing elements from each will be required. We provide recommendations for equitable outcomes.
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“Engaging the Enemy”: Orangutan (Pongo pygmaeus morio) Conservation in Human Modified Environments in the Kinabatangan floodplain of Sabah, Malaysian Borneo. INT J PRIMATOL 2022. [DOI: 10.1007/s10764-022-00288-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Abstract
Throughout the equatorial tropics, forest conversion to agriculture often fragments crucial primate habitat. In 30 years, 80% of the alluvial lowland forests along the Kinabatangan River in Sabah, Malaysian Borneo, have been supplanted by oil palm (Elaeis guineensis) plantations. Today, only about 20% of the former orangutan (Pongo pygmaeus morio) population remains in the region. Because most of the land is now under the tenure of agribusiness companies, we used a pragmatic approach of mixed biosocial methods and citizen science engagement of oil palm growers (N = 6) as active conservation partners to study orangutan use of the privately administered landscape between protected forest fragments. We found that 22 of 25 remanent forest patches (0.5 to 242 hectares) surveyed within plantations contained food or shelter resources useful for orangutans. Of these, 20 are in regular transitory use by wider-ranging adult male orangutans, and in 9 patches, females are resident and raising offspring isolated within oil palm plantations. These findings indicate that orangutans retain a measure of normal metapopulation dynamics necessary for viability at the landscape level despite drastic habitat modification. We found that barriers to in situ conservation in these agroforest matrices were due to the following misconceptions across sectors: 1) Good farming practices require exclusion of wildlife; 2) Orangutans seen in plantations must be “rescued” by people; and 3) Translocation is an appropriate conservation strategy, and nondetrimental to orangutans. Our exploratory study exemplifies the value of biosocial methods and collaboration with industrial-scale farmers to support primate resilience in forests fragmented by agriculture.
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Sonam K, Dorjay R, Khanyari M, Bijoor A, Lobzang S, Sharma M, Suresh S, Mishra C, Suryawanshi KR. A Community-Based Conservation Initiative for Wolves in the Ladakh Trans-Himalaya, India. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.809817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We describe a pilot community-based conservation initiative for wolves Canis lupus that involves (i) voluntary deactivation of traditional trapping pits called Shandong, (ii) commitment to wildlife conservation by the local community, and (iii) collaborative construction and consecration of a Stupa (Buddhist shrine) in the vicinity of the Shandong as a symbol of conservation and repentance for past hunting. People and wolves have a complex relationship, in part shaped by predation on livestock, which can have severe impacts on livelihoods in pastoral societies. Consequently, wolf conservation often evokes strong and polarizing reactions. To control wolf populations, livestock herders across the Trans- Himalayan and Tibetan regions use different types of traps. Shandong is a relatively large, widely used traditional trapping pit with inverted funnel-shaped stone walls, usually built near villages or herder camps. Typically, a live domestic animal is placed in the pit to attract the wolves. Once the wolves jump into the pit, the funnel shaped walls prevent them from escaping, and trapped wolves are usually stoned to death. In an extensive survey covering over 25,000 sq. km, we enumerated 94 Shandong in 58 of the 64 surveyed villages in Ladakh between June 2019 and March 2020. Thirty of these had been used to kill wolves within the past 10 years, while 7 had been destroyed. Shandong that were not in use were of poorer condition. Since 2017, we have worked with community members, local monks, and the region’s religious leaders to support the neutralization of the Shandong while preserving their structure, and assisted the communities to build Stupas and to consecrate them. Our pilot efforts with three communities appear to generate pride locally, and hold promise for promoting wolf conservation in Ladakh and in large parts of Trans-Himalayan and Tibetan regions that share similar cultural settings.
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Sherman J, Unwin S, Travis DA, Oram F, Wich SA, Jaya RL, Voigt M, Santika T, Massingham E, Seaman DJI, Meijaard E, Ancrenaz M. Disease Risk and Conservation Implications of Orangutan Translocations. Front Vet Sci 2021; 8:749547. [PMID: 34869722 PMCID: PMC8633116 DOI: 10.3389/fvets.2021.749547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/07/2021] [Indexed: 11/16/2022] Open
Abstract
Critically Endangered orangutans are translocated in several situations: reintroduced into historic range where no wild populations exist, released to reinforce existing wild populations, and wild-to-wild translocated to remove individuals from potentially risky situations. Translocated orangutans exposed to human diseases, including Coronavirus Disease 2019 (COVID-19), pose risks to wild and previously released conspecifics. Wildlife disease risk experts recommended halting great ape translocations during the COVID-19 pandemic to minimize risk of disease transmission to wild populations. We collected data on orangutan releases and associated disease risk management in Indonesia during the COVID-19 pandemic, and developed a problem description for orangutan disease and conservation risks. We identified that at least 15 rehabilitated ex-captive and 27 wild captured orangutans were released during the study period. Identified disease risks included several wild-to-wild translocated orangutans in direct contact or proximity to humans without protective equipment, and formerly captive rehabilitated orangutans that have had long periods of contact and potential exposure to human diseases. While translocation practitioners typically employ mitigation measures to decrease disease transmission likelihood, these measures cannot eliminate all risk, and are not consistently applied. COVID-19 and other diseases of human origin can be transmitted to orangutans, which could have catastrophic impacts on wild orangutans, other susceptible fauna, and humans should disease transmission occur. We recommend stakeholders conduct a Disease Risk Analysis for orangutan translocation, and improve pathogen surveillance and mitigation measures to decrease the likelihood of potential outbreaks. We also suggest refocusing conservation efforts on alternatives to wild-to-wild translocation including mitigating human-orangutan interactions, enforcing laws and protecting orangutan habitats to conserve orangutans in situ.
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Affiliation(s)
| | - Steve Unwin
- School of Biosciences, University of Birmingham, Birmingham, United Kingdom
| | - Dominic A Travis
- One Health Division, Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
| | - Felicity Oram
- Pongo Alliance-Kinabatangan, Kota Kinabalu, Malaysia
| | - Serge A Wich
- School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | | | - Maria Voigt
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, United Kingdom
| | - Truly Santika
- Natural Resources Institute, University of Greenwich, Chatham, United Kingdom
| | - Emily Massingham
- School of Biological Sciences, University of Queensland, St Lucia, QLD, Australia
| | - Dave J I Seaman
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, United Kingdom
| | - Erik Meijaard
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, United Kingdom.,School of Biological Sciences, University of Queensland, St Lucia, QLD, Australia.,Borneo Futures, Bandar Seri Begawan, Darussalam, Brunei
| | - Marc Ancrenaz
- Pongo Alliance-Kinabatangan, Kota Kinabalu, Malaysia.,Borneo Futures, Bandar Seri Begawan, Darussalam, Brunei.,HUTAN, Sandakan, Malaysia
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7
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Freund CA, Heaning EG, Mulrain IR, McCann JB, DiGiorgio AL. Building better conservation media for primates and people: A case study of orangutan rescue and rehabilitation YouTube videos. PEOPLE AND NATURE 2021. [DOI: 10.1002/pan3.10268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Cathryn A. Freund
- Department of Biology Wake Forest University Winston‐Salem NC USA
- Center for Global Discovery and Conservation Science Arizona State University Tempe AZ USA
| | - Erin G. Heaning
- Department of Psychology Princeton University Princeton NJ USA
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8
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Tsutaya T, Ogawa NO, Nomura T, Shimizu M, Ohkouchi N, Kuze N. Carbon and nitrogen stable isotopic offsets between diet and hair/feces in captive orangutans. Primates 2021; 62:945-954. [PMID: 34415484 DOI: 10.1007/s10329-021-00940-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022]
Abstract
Estimating stable isotopic offset values is crucial for dietary reconstructions. Although research into stable isotope ecology of wild nonhuman primates is increasing overall, only a minority of studies involve laboratory experiments. This study is the first to report the carbon and nitrogen stable isotopic offset values in hair and feces of orangutans. During an experiment lasting 1 week, the weight of each consumed food item was recorded for each of six captive Bornean orangutan (Pongo pygmaeus) individuals. The food, hair, and fecal samples were collected for a few days, and their stable carbon and nitrogen isotope ratios were measured using an elemental analyzer/isotope ratio mass spectrometer. Subsamples of feces were treated with ethanol during the preservation process. Monte Carlo analyses showed that the 95% confidence intervals (CIs) of the carbon and nitrogen offset values between hair and diet were +0.9‰ to +3.9‰ and +2.3‰ to +4.5‰, respectively. The 95% CIs of the carbon and nitrogen offset values between feces and diet were -3.7‰ to -0.9‰ and +0.3‰ to +2.7‰, respectively. The effect of ethanol treatment on the stable isotope ratios of feces was unclear and inconclusive. The computed offset values of hair in captive orangutans are similar to those reported in other nonhuman primates, although those of feces showed greater interspecies variations. The offset values estimated in this study contribute to isotopic studies into the feeding ecology of free-ranging orangutans who are critically endangered in most wild settings.
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Affiliation(s)
- Takumi Tsutaya
- Department of Evolutionary Studies of Biosystems, the Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa, 240-0193, Japan. .,Japan Agency for Marine-Earth Science and Technology, Biogeochemistry Research Center, Research Institute for Marine Resources Utilization, Natsushima 2-15, Yokosuka, Kanagawa, 237-0061, Japan.
| | - Nanako O Ogawa
- Japan Agency for Marine-Earth Science and Technology, Biogeochemistry Research Center, Research Institute for Marine Resources Utilization, Natsushima 2-15, Yokosuka, Kanagawa, 237-0061, Japan
| | - Toshiya Nomura
- Tama Zoological Park, Hodokubo 7-1-1, Hino, Tokyo, 191-0042, Japan
| | - Mika Shimizu
- Tama Zoological Park, Hodokubo 7-1-1, Hino, Tokyo, 191-0042, Japan.,Present address: Ikimonosha, Maya 714, Akaiwa, Okayama, 709-0825, Japan
| | - Naohiko Ohkouchi
- Japan Agency for Marine-Earth Science and Technology, Biogeochemistry Research Center, Research Institute for Marine Resources Utilization, Natsushima 2-15, Yokosuka, Kanagawa, 237-0061, Japan
| | - Noko Kuze
- Department of Anthropology, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Ibaraki, 305-0005, Japan
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9
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Biotic and abiotic drivers of dispersion dynamics in a large-bodied tropical vertebrate, the Western Bornean orangutan. Oecologia 2021; 196:707-721. [PMID: 34143262 DOI: 10.1007/s00442-021-04964-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Understanding of animal responses to dynamic resource landscapes is based largely on research on temperate species with small body sizes and fast life histories. We studied a large, tropical mammal with an extremely slow life history, the Western Bornean orangutan (Pongo pygmaeus wurmbii), across a heterogeneous natural landscape encompassing seven distinct forest types. Our goals were to characterize fluctuations in abundance, test hypotheses regarding the relationship between dispersion dynamics and resource availability, and evaluate how movement patterns are influenced by abiotic conditions. We surveyed abundance in Gunung Palung National Park, West Kalimantan, Indonesia, for 99 consecutive months and simultaneously recorded weather data and assessed fruit availability. We developed a Bayesian hierarchical distance sampling model to estimate population dispersion and assess the roles of fruit availability, rainfall, and temperature in driving movement patterns across this heterogeneous landscape. Orangutan abundance varied dramatically over space and time. Each forest type was important in sustaining more than 40% of the total orangutans on site during at least one month, as animals moved to track asynchronies in fruiting phenology. We conclude that landscape-level movements buffer orangutans against fruit scarcity, peat swamps are crucial fallback habitats, and orangutans' use of high elevation forests is strongly dependent on abiotic conditions. Our results show that orangutans can periodically occupy putative-sink habitats and be virtually absent for extended periods from habitats that are vitally important in sustaining their population, highlighting the need for long-term studies and potential risks in interpreting occurrence or abundance measures as indicators of habitat importance.
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10
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Robbins MM. Assessing attitudes towards gorilla conservation via employee interviews. Am J Primatol 2020; 83:e23191. [PMID: 32894603 DOI: 10.1002/ajp.23191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/03/2020] [Accepted: 08/08/2020] [Indexed: 02/04/2023]
Abstract
To determine the effectiveness of conservation strategies, not only should we monitor biological variables, such as population size and levels of illegal activity, but also we should examine changes in attitudes and behavior of local community members. Here, I use semistructured interviews of employees at two field sites, in Bwindi Impenetrable National Park, Uganda and Loango National Park, Gabon, to understand if their employment influenced their attitude towards gorillas and conservation and led to behavior change. In contrast to western views of gorillas as "gentle giants," staff viewed gorillas as dangerous animals before working for these projects. Overall, employment leads to viewing conservation and gorillas more positively, and in many cases, viewing the gorillas as kin. The most common value attributed to the gorillas was economic, yet intrinsic and non-use existence values were frequently mentioned. Loango staff, but not Bwindi staff, reported behavior change related to hunting and bushmeat consumption, which likely is related to bushmeat consumption being commonplace in Gabon but not in Uganda. The Bwindi staff seemed to have a more positive and broader outlook toward conservation than the Loango staff, possibly because they had more years of formal education, they worked with gorillas longer, there is more history of conservation activities in Bwindi, and/or they have been less directly affected by negative consequences of conservation (e.g., crop raiding). This study shows the importance of explaining that gorillas are not dangerous if not provoked and using their human-like characteristics as a means to change conservation values and interest of local communities, while concurrently recognizing that providing economic benefits and reducing negative effects of wildlife are a reality for conservation buy-in.
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Affiliation(s)
- Martha M Robbins
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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11
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Sherman J, Ancrenaz M, Meijaard E. Shifting apes: Conservation and welfare outcomes of Bornean orangutan rescue and release in Kalimantan, Indonesia. J Nat Conserv 2020. [DOI: 10.1016/j.jnc.2020.125807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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12
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Conservation and the social sciences: Beyond critique and co‐optation. A case study from orangutan conservation. PEOPLE AND NATURE 2020. [DOI: 10.1002/pan3.10072] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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13
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Norconk MA, Atsalis S, Tully G, Santillán AM, Waters S, Knott CD, Ross SR, Shanee S, Stiles D. Reducing the primate pet trade: Actions for primatologists. Am J Primatol 2019; 82:e23079. [PMID: 31876316 PMCID: PMC9286354 DOI: 10.1002/ajp.23079] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 12/01/2019] [Accepted: 12/04/2019] [Indexed: 01/09/2023]
Abstract
This commentary emerged from a panel presentation at the International Primatological Society Congress in Nairobi, Kenya, 2018. The goal was to provide regional updates on the status of primate removal from habitat countries, especially for the pet trade, and develop guidelines that could help primatologists address this critical problem. The trade in live primates includes those used as pets, in entertainment, and as subjects of biomedical experimentation, but here we focus on those primates destined for the pet trade. Such transactions are a hugely lucrative business, impacting hundreds of thousands of individuals annually and affecting the survival of wild populations. Being intimately familiar with primate social behavior, life history and biology, primatologists, whether they work with captive or wild primates, are in a unique position to understand the nature of the trade and attempt to counter its effects. In addition to updating the status of the primate pet trade, we provide recommendations that may help primatologists formulate a plan to deal, locally and regionally, with illegal trafficking in live primates. General guidelines include increasing awareness of local customs, policies and laws; developing collaborative research opportunities for local people; engaging in training/informational opportunities; and instructing on how to take action when encountering illegally-trafficked primates.
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Affiliation(s)
| | | | - Gregg Tully
- Pan African Sanctuary Alliance (PASA), Portland, Oregon
| | - Ana Maria Santillán
- Departamento de Etología, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico.,Centro Mexicano de Rehabilitación de Primates A.C., Vera Cruz, Mexico
| | - Siân Waters
- Department of Anthropology, Durham University, Durham, UK.,Barbary Macaque Awareness & Conservation, Morocco
| | - Cheryl D Knott
- Departments of Anthropology and Biology, Boston University, Boston, Massachusetts.,Gunung Palung Orangutan Conservation Program, West Kalimantan, Indonesia
| | - Stephen R Ross
- Lester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, Chicago, Illinois
| | - Sam Shanee
- Neotropical Primate Conservation, Cornwall, UK
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14
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Seaman DJI, Bernard H, Ancrenaz M, Coomes D, Swinfield T, Milodowski DT, Humle T, Struebig MJ. Densities of Bornean orang-utans (Pongo pygmaeus morio) in heavily degraded forest and oil palm plantations in Sabah, Borneo. Am J Primatol 2019; 81:e23030. [PMID: 31328289 PMCID: PMC6771663 DOI: 10.1002/ajp.23030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 06/17/2019] [Accepted: 06/25/2019] [Indexed: 11/07/2022]
Abstract
The conversion of forest to agriculture continues to contribute to the loss and fragmentation of remaining orang-utan habitat. There are still few published estimates of orang-utan densities in these heavily modified agricultural areas to inform range-wide population assessments and conservation strategies. In addition, little is known about what landscape features promote orang-utan habitat use. Using indirect nest count methods, we implemented surveys and estimated population densities of the Northeast Bornean orang-utan (Pongo pygmaeus morio) across the continuous logged forest and forest remnants in a recently salvage-logged area and oil palm plantations in Sabah, Malaysian Borneo. We then assessed the influence of landscape features and forest structural metrics obtained from LiDAR data on estimates of orang-utan density. Recent salvage logging appeared to have a little short-term effect on orang-utan density (2.35 ind/km 2 ), which remained similar to recovering logged forest nearby (2.32 ind/km 2 ). Orang-utans were also present in remnant forest patches in oil palm plantations, but at significantly lower numbers (0.82 ind/km 2 ) than nearby logged forest and salvage-logged areas. Densities were strongly influenced by variation in canopy height but were not associated with other potential covariates. Our findings suggest that orang-utans currently exist, at least in the short-term, within human-modified landscapes, providing that remnant forest patches remain. We urge greater recognition of the role that these degraded habitats can have in supporting orang-utan populations, and that future range-wide analyses and conservation strategies better incorporate data from human-modified landscapes.
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Affiliation(s)
- Dave J I Seaman
- Durrell Institute of Con servation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, UK
| | - Henry Bernard
- Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Marc Ancrenaz
- HUTAN-Kinabatangan Orangutan Conservation Programme, Sandakan, Sabah, Malaysia.,Borneo Futures, Bandar Seri Begawan, Brunei Darussalam
| | - David Coomes
- Department of Plant Sciences, Forest Ecology and Conservation Group, University of Cambridge, Cambridge, UK
| | - Thomas Swinfield
- Department of Plant Sciences, Forest Ecology and Conservation Group, University of Cambridge, Cambridge, UK.,Centre for Conservation Science, Royal Society for the Protection of Birds, David Attenborough Building, Cambridge, UK
| | | | - Tatyana Humle
- Durrell Institute of Con servation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, UK
| | - Matthew J Struebig
- Durrell Institute of Con servation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, UK
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15
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Estrada A, Garber PA, Chaudhary A. Expanding global commodities trade and consumption place the world’s primates at risk of extinction. PeerJ 2019. [DOI: 10.7717/peerj.7068] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
As a consequence of recent human activities. populations of approximately 75% of the world’s primates are in decline, and more than 60% of species (n = 512) are threatened with extinction. Major anthropogenic pressures on primate persistence include the widespread loss and degradation of natural habitats caused by the expansion of industrial agriculture, pastureland for cattle, logging, mining, and fossil fuel extraction. This is the result of growing global market demands for agricultural and nonagricultural commodities. Here, we profile the effects of international trade of forest-risk agricultural and nonagricultural commodities, namely soybean, oil palm, natural rubber, beef, forestry products, fossil fuels, metals, minerals, and gemstones on habitat conversion in the Neotropics, Africa, and South and Southeast Asia. Total estimated forest loss for these regions between 2001 and 2017 was ca 179 million ha. The average percent of commodity-driven permanent deforestation for the period 2001–2015 was highest in Southeast Asia (47%) followed by the Neotropics (26%), South Asia (26%), and Africa (7%). Commodities exports increased significantly between 2000 and 2016 in all primate range regions leading to the widespread conversion of forested land to agricultural fields and an increase in natural resource extraction. In 2016, US $1.1 trillion of natural-resource commodities were traded by countries in primate range regions. The Neotropics accounted for 41% of the total value of these exports, Southeast Asia for 27%, Africa 21%, and South Asia 11%. Major commodity exporters in 2016 were Brazil, India, Indonesia, Malaysia and South Africa, countries of high primate diversity and endemism. Among the top 10 importers were China, the US, Japan, and Switzerland. Primate range countries lag far behind importer nations in food security and gross domestic product per capita, suggesting that trade and commodity-driven land-use have done little to generate wealth and well-being in primate habitat countries. Modeling of land-use and projected extinction of primate species by 2050 and 2100 under a business as usual scenario for 61 primate range countries indicate that each country is expected to see a significant increase in the number of species threatened with extinction. To mitigate this impending crisis, we advocate the “greening” of trade, a global shift toward a low-meat diet, reduced consumption of oil seed, diminished use of tropical timber, fossil fuels, metals, minerals, and gemstones from the tropics, accompanied by a stronger and sustained global resolve to regulate and reverse the negative impacts of growing unsustainable global demands and commodity trade on income inequality, and the destruction of primates and their habitats.
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Affiliation(s)
- Alejandro Estrada
- National Autonomous University of Mexico, Institute of Biology, Mexico City, Mexico
| | - Paul A. Garber
- Department of Anthropology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Abhishek Chaudhary
- Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, India
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16
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Freund CA, Achmad M, Kanisius P, Naruri R, Tang E, Knott CD. Conserving orangutans one classroom at a time: evaluating the effectiveness of a wildlife education program for school‐aged children in Indonesia. Anim Conserv 2019. [DOI: 10.1111/acv.12513] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- C. A. Freund
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
- Wake Forest University Department of Biology Winston Salem NC USA
| | - M. Achmad
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
| | - P. Kanisius
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
| | - R. Naruri
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
| | - E. Tang
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
| | - C. D. Knott
- Gunung Palung Orangutan Conservation Program Boston MA USA
- Yayasan Palung Jl. Kol. Sugiono Gg. Ikram No. 01 Ketapang West Kalimantan Indonesia
- Boston University Department of Anthropology Boston MA USA
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17
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Pandong J, Gumal M, Alen L, Sidu A, Ng S, Koh LP. Population estimates of Bornean orang-utans using Bayesian analysis at the greater Batang Ai-Lanjak-Entimau landscape in Sarawak, Malaysia. Sci Rep 2018; 8:15672. [PMID: 30353034 PMCID: PMC6199283 DOI: 10.1038/s41598-018-33872-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 10/01/2018] [Indexed: 11/15/2022] Open
Abstract
The integration of Bayesian analysis into existing great ape survey methods could be used to generate precise and reliable population estimates of Bornean orang-utans. We used the Marked Nest Count (MNC) method to count new orang-utan nests at seven previously undocumented study sites in Sarawak, Malaysia. Our survey teams marked new nests on the first survey and revisited the plots on two more occasions; after about 21 and 42 days respectively. We used the N-mixture models to integrate suitability, abundance and detection models which account for zero inflation and imperfect detection for the analysis. The result was a combined estimate of 355 orang-utans with the 95% highest density interval (HDI) of 135 to 602 individuals. We visually inspected the posterior distributions of our parameters and compared precisions between study sites. We subsequently assess the strength or reliability of the generated estimates using identifiability tests. Only three out of the seven estimates had <35% overlap to indicate strong reliability. We discussed the limitations and advantages of our study design, and made recommendations to improve the sampling scheme. Over the course of this research, two of the study sites were gazetted as extensions to the Lanjak-Entimau Wildlife Sanctuary for orang-utan conservation.
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Affiliation(s)
- Joshua Pandong
- Wildlife Conservation Society (WCS)-Malaysia Programme, No. 7 Jalan Ridgeway, 93200, Kuching, Sarawak, Malaysia. .,School of Biological Sciences, The University of Adelaide, South Australia, 5005, Australia.
| | - Melvin Gumal
- Wildlife Conservation Society (WCS)-Malaysia Programme, No. 7 Jalan Ridgeway, 93200, Kuching, Sarawak, Malaysia
| | - Lukmann Alen
- Wildlife Conservation Society (WCS)-Malaysia Programme, No. 7 Jalan Ridgeway, 93200, Kuching, Sarawak, Malaysia.,WWF Malaysia, Bangunan Binamas 7th Floor, Jalan Padungan, Kuching, Sarawak, Malaysia
| | - Ailyn Sidu
- Wildlife Conservation Society (WCS)-Malaysia Programme, No. 7 Jalan Ridgeway, 93200, Kuching, Sarawak, Malaysia.,WWF Malaysia, Bangunan Binamas 7th Floor, Jalan Padungan, Kuching, Sarawak, Malaysia
| | - Sylvia Ng
- Wildlife Conservation Society (WCS)-Malaysia Programme, No. 7 Jalan Ridgeway, 93200, Kuching, Sarawak, Malaysia
| | - Lian Pin Koh
- School of Biological Sciences, The University of Adelaide, South Australia, 5005, Australia.,Conservation International, 3131 East Madison Street, Suite 201, Seattle, WA, 98112, USA
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18
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Down from the treetops: red langur (Presbytis rubicunda) terrestrial behavior. Primates 2018; 59:437-448. [PMID: 30027488 DOI: 10.1007/s10329-018-0676-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 07/06/2018] [Indexed: 10/28/2022]
Abstract
Using direct observations and camera traps at eight sites across Indonesian Borneo we show how red langurs (Presbytis rubicunda) are more terrestrial than previously believed, regularly coming to the ground. This unusual behavior has been found at six of the eight sites surveyed. We find that red langurs come to the ground more frequently in disturbed forests, specifically ones which have been impacted by logging, fire, and hunting, though more data are needed to confirm this as a direct correlation. We also found a trend towards decreased ground use with increased elevation of the habitat. When on the ground, red langurs are predominantly engaged in feeding (50% direct observations, 61% camera traps) and traveling (29% direct observations, 13% camera traps). Red langurs are found on the ground throughout the day, at similar times to activity periods of the apex predator, the Sunda clouded leopard (Neofelis diardi). We suggest that ground use by red langurs could be an adaptation to disturbed forest to exploit additional food sources and to facilitate travel.
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19
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Spehar SN, Sheil D, Harrison T, Louys J, Ancrenaz M, Marshall AJ, Wich SA, Bruford MW, Meijaard E. Orangutans venture out of the rainforest and into the Anthropocene. SCIENCE ADVANCES 2018; 4:e1701422. [PMID: 29963619 PMCID: PMC6021148 DOI: 10.1126/sciadv.1701422] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 05/18/2018] [Indexed: 06/08/2023]
Abstract
Conservation benefits from understanding how adaptability and threat interact to determine a taxon's vulnerability. Recognizing how interactions with humans have shaped taxa such as the critically endangered orangutan (Pongo spp.) offers insights into this relationship. Orangutans are viewed as icons of wild nature, and most efforts to prevent their extinction have focused on protecting minimally disturbed habitat, with limited success. We synthesize fossil, archeological, genetic, and behavioral evidence to demonstrate that at least 70,000 years of human influence have shaped orangutan distribution, abundance, and ecology and will likely continue to do so in the future. Our findings indicate that orangutans are vulnerable to hunting but appear flexible in response to some other human activities. This highlights the need for a multifaceted, landscape-level approach to orangutan conservation that leverages sound policy and cooperation among government, private sector, and community stakeholders to prevent hunting, mitigate human-orangutan conflict, and preserve and reconnect remaining natural forests. Broad cooperation can be encouraged through incentives and strategies that focus on the common interests and concerns of different stakeholders. Orangutans provide an illustrative example of how acknowledging the long and pervasive influence of humans can improve strategies to preserve biodiversity in the Anthropocene.
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Affiliation(s)
- Stephanie N. Spehar
- Anthropology Program, University of Wisconsin Oshkosh, Oshkosh, WI 54901, USA
| | - Douglas Sheil
- Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1430 Ås, Norway
| | - Terry Harrison
- Department of Anthropology, New York University, New York, NY 10003, USA
| | - Julien Louys
- Australian Research Center for Human Evolution, Environmental Futures Research Institute, Griffith University, Brisbane, Queensland, Australia
| | - Marc Ancrenaz
- Borneo Futures, Bandar Seri Begawan, BE1518 Brunei Darussalam
- Kinabatangan Orang-Utan Conservation Programme, Kota Kinabalu, Sabah, Malaysia
| | - Andrew J. Marshall
- Department of Anthropology, Department of Ecology and Evolutionary Biology, Program in the Environment, and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109, USA
| | - Serge A. Wich
- School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, Amsterdam 1098, Netherlands
| | - Michael W. Bruford
- Sustainable Places Research Institute and School of Biosciences, Cardiff University, Cardiff, UK
| | - Erik Meijaard
- Borneo Futures, Bandar Seri Begawan, BE1518 Brunei Darussalam
- School of Biological Sciences, University of Queensland, Brisbane, Queensland, Australia
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20
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Voigt M, Wich SA, Ancrenaz M, Meijaard E, Abram N, Banes GL, Campbell-Smith G, d'Arcy LJ, Delgado RA, Erman A, Gaveau D, Goossens B, Heinicke S, Houghton M, Husson SJ, Leiman A, Sanchez KL, Makinuddin N, Marshall AJ, Meididit A, Miettinen J, Mundry R, Musnanda, Nardiyono, Nurcahyo A, Odom K, Panda A, Prasetyo D, Priadjati A, Purnomo, Rafiastanto A, Russon AE, Santika T, Sihite J, Spehar S, Struebig M, Sulbaran-Romero E, Tjiu A, Wells J, Wilson KA, Kühl HS. Global Demand for Natural Resources Eliminated More Than 100,000 Bornean Orangutans. Curr Biol 2018; 28:761-769.e5. [PMID: 29456144 DOI: 10.1016/j.cub.2018.01.053] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/07/2018] [Accepted: 01/18/2018] [Indexed: 11/30/2022]
Abstract
Unsustainable exploitation of natural resources is increasingly affecting the highly biodiverse tropics [1, 2]. Although rapid developments in remote sensing technology have permitted more precise estimates of land-cover change over large spatial scales [3-5], our knowledge about the effects of these changes on wildlife is much more sparse [6, 7]. Here we use field survey data, predictive density distribution modeling, and remote sensing to investigate the impact of resource use and land-use changes on the density distribution of Bornean orangutans (Pongo pygmaeus). Our models indicate that between 1999 and 2015, half of the orangutan population was affected by logging, deforestation, or industrialized plantations. Although land clearance caused the most dramatic rates of decline, it accounted for only a small proportion of the total loss. A much larger number of orangutans were lost in selectively logged and primary forests, where rates of decline were less precipitous, but where far more orangutans are found. This suggests that further drivers, independent of land-use change, contribute to orangutan loss. This finding is consistent with studies reporting hunting as a major cause in orangutan decline [8-10]. Our predictions of orangutan abundance loss across Borneo suggest that the population decreased by more than 100,000 individuals, corroborating recent estimates of decline [11]. Practical solutions to prevent future orangutan decline can only be realized by addressing its complex causes in a holistic manner across political and societal sectors, such as in land-use planning, resource exploitation, infrastructure development, and education, and by increasing long-term sustainability [12]. VIDEO ABSTRACT.
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Affiliation(s)
- Maria Voigt
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany.
| | - Serge A Wich
- Research Centre in Evolutionary Anthropology, and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK; Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, the Netherlands.
| | - Marc Ancrenaz
- Borneo Futures, Bandar Seri Begawan, Brunei Darussalam; HUTAN-Kinabatangan Orangutan Conservation Programme, Sandakan, Sabah, Malaysia
| | - Erik Meijaard
- Borneo Futures, Bandar Seri Begawan, Brunei Darussalam; ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia
| | - Nicola Abram
- ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia; School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia; Living Landscape Alliance, 5 Jupiter House Calleva Park, Berkshire RG7 8NN, UK; Forever Sabah, H30 Gaya Park, Lorong Muntahan 1C, Penampang Road, 88300 Kota Kinabalu, Sabah, Malaysia
| | - Graham L Banes
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany; School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK; CAS-MPG Partner Institute for Computational Biology, 320 Yue Yang Road, Shanghai 200031, People's Republic of China
| | | | - Laura J d'Arcy
- Borneo Nature Foundation, JL. Bukit Raya No. 82, Bukit Raya, Palangka Raya 73112, Indonesia; Zoological Society of London, London, UK
| | - Roberto A Delgado
- Departments of Anthropology and Biological Sciences, Program in Integrative and Evolutionary Biology (IEB), University of Southern California, Los Angeles, Los Angeles, CA, USA
| | - Andi Erman
- Kapuas Hulu Program, GFA/KWF, West Kalimantan, Indonesia
| | - David Gaveau
- Center for International Forestry Research, P.O. Box 0113 BOCBD, Bogor 16000, Indonesia
| | - Benoit Goossens
- Organisms and Environment Division, Cardiff School of Biosciences, Cardiff University, Cardiff, UK; Danau Girang Field Centre, c/o Sabah Wildlife Department, Wisma Muis, 88100 Kota Kinabalu, Sabah, Malaysia; Sustainable Places Research Institute, Cardiff University, Cardiff, UK
| | - Stefanie Heinicke
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Max Houghton
- Research Centre in Evolutionary Anthropology, and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
| | - Simon J Husson
- Orangutan Tropical Peatland Project, The Center for International Cooperation in the Sustainable Management of Tropical Peatlands (CIMTROP), University of Palangka Raya, Central Kalimantan, Indonesia
| | | | | | | | - Andrew J Marshall
- Department of Anthropology, Department of Ecology and Evolutionary Biology, Program in the Environment, and School for Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ari Meididit
- Biology Faculty, Universitas Nasional (UNAS), Jakarta, Indonesia; Central Kalimantan Program, World Wide Fund for Nature-Indonesia (WWF-Indonesia), JL. Krakatau No. 12, Palangka Raya, Central Kalimantan 73112, Indonesia
| | - Jukka Miettinen
- Centre for Remote Imaging, Sensing and Processing (CRISP), National University of Singapore (NUS), Singapore 119076, Singapore
| | - Roger Mundry
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
| | - Musnanda
- The Nature Conservancy (TNC) Indonesia, Jakarta, Indonesia
| | - Nardiyono
- Austindo Nusantara Jaya, Jakarta 12910, Indonesia
| | - Anton Nurcahyo
- College of Arts and Social Sciences, The Australian National University, Canberra, ACT, Australia
| | - Kisar Odom
- Borneo Orangutan Survival Foundation (BOSF), JL. Papandayan No.10, Bogor 16151 West Java, Indonesia
| | - Adventus Panda
- Central Kalimantan Program, World Wide Fund for Nature-Indonesia (WWF-Indonesia), JL. Krakatau No. 12, Palangka Raya, Central Kalimantan 73112, Indonesia
| | - Didik Prasetyo
- The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia
| | | | - Purnomo
- The Nature Conservancy (TNC) Indonesia, Jakarta, Indonesia
| | | | - Anne E Russon
- Psychology Department, Glendon College of York University, 2275 Bayview Avenue, Toronto, ON M4N 3M6, Canada
| | - Truly Santika
- Borneo Futures, Bandar Seri Begawan, Brunei Darussalam; ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia; School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Jamartin Sihite
- Borneo Orangutan Survival Foundation (BOSF), JL. Papandayan No.10, Bogor 16151 West Java, Indonesia; Restorasi Habitat Orangutan Indonesia (RHOI), Bogor, West Java, Indonesia
| | - Stephanie Spehar
- Anthropology Program, University of Wisconsin Oshkosh, Oshkosh, WI, USA
| | - Matthew Struebig
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury CT2 7NR, UK
| | - Enrique Sulbaran-Romero
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Albertus Tjiu
- West Kalimantan Program, World Wide Fund for Nature-Indonesia (WWF-Indonesia), JL. Karna Sosial, Gg. Wonoyoso 2 No. 3, Pontianak 78124 West Kalimantan, Indonesia
| | - Jessie Wells
- ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia; School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Kerrie A Wilson
- ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia; School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Hjalmar S Kühl
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
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21
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Canopy structure drives orangutan habitat selection in disturbed Bornean forests. Proc Natl Acad Sci U S A 2017; 114:8307-8312. [PMID: 28720703 DOI: 10.1073/pnas.1706780114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The conservation of charismatic and functionally important large species is becoming increasingly difficult. Anthropogenic pressures continue to squeeze available habitat and force animals into degraded and disturbed areas. Ensuring the long-term survival of these species requires a well-developed understanding of how animals use these new landscapes to inform conservation and habitat restoration efforts. We combined 3 y of highly detailed visual observations of Bornean orangutans with high-resolution airborne remote sensing (Light Detection and Ranging) to understand orangutan movement in disturbed and fragmented forests of Malaysian Borneo. Structural attributes of the upper forest canopy were the dominant determinant of orangutan movement among all age and sex classes, with orangutans more likely to move in directions of increased canopy closure, tall trees, and uniform height, as well as avoiding canopy gaps and moving toward emergent crowns. In contrast, canopy vertical complexity (canopy layering and shape) did not affect movement. Our results suggest that although orangutans do make use of disturbed forest, they select certain canopy attributes within these forests, indicating that not all disturbed or degraded forest is of equal value for the long-term sustainability of orangutan populations. Although the value of disturbed habitats needs to be recognized in conservation plans for wide-ranging, large-bodied species, minimal ecological requirements within these habitats also need to be understood and considered if long-term population viability is to be realized.
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22
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Santika T, Ancrenaz M, Wilson KA, Spehar S, Abram N, Banes GL, Campbell-Smith G, Curran L, d'Arcy L, Delgado RA, Erman A, Goossens B, Hartanto H, Houghton M, Husson SJ, Kühl HS, Lackman I, Leiman A, Llano Sanchez K, Makinuddin N, Marshall AJ, Meididit A, Mengersen K, Musnanda, Nardiyono, Nurcahyo A, Odom K, Panda A, Prasetyo D, Purnomo, Rafiastanto A, Raharjo S, Ratnasari D, Russon AE, Santana AH, Santoso E, Sapari I, Sihite J, Suyoko A, Tjiu A, Utami-Atmoko SS, van Schaik CP, Voigt M, Wells J, Wich SA, Willems EP, Meijaard E. First integrative trend analysis for a great ape species in Borneo. Sci Rep 2017; 7:4839. [PMID: 28687788 PMCID: PMC5501861 DOI: 10.1038/s41598-017-04435-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 05/16/2017] [Indexed: 11/09/2022] Open
Abstract
For many threatened species the rate and drivers of population decline are difficult to assess accurately: species' surveys are typically restricted to small geographic areas, are conducted over short time periods, and employ a wide range of survey protocols. We addressed methodological challenges for assessing change in the abundance of an endangered species. We applied novel methods for integrating field and interview survey data for the critically endangered Bornean orangutan (Pongo pygmaeus), allowing a deeper understanding of the species' persistence through time. Our analysis revealed that Bornean orangutan populations have declined at a rate of 25% over the last 10 years. Survival rates of the species are lowest in areas with intermediate rainfall, where complex interrelations between soil fertility, agricultural productivity, and human settlement patterns influence persistence. These areas also have highest threats from human-wildlife conflict. Survival rates are further positively associated with forest extent, but are lower in areas where surrounding forest has been recently converted to industrial agriculture. Our study highlights the urgency of determining specific management interventions needed in different locations to counter the trend of decline and its associated drivers.
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Affiliation(s)
- Truly Santika
- The University of Queensland, School of Biological Sciences, Brisbane, QLD, Australia. .,ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia. .,Borneo Futures, Bandar Seri Begawan, Brunei Darussalam.
| | - Marc Ancrenaz
- Borneo Futures, Bandar Seri Begawan, Brunei Darussalam.,Kinabatangan Orang-utan Conservation Programme, Sandakan, Sabah, Malaysia
| | - Kerrie A Wilson
- The University of Queensland, School of Biological Sciences, Brisbane, QLD, Australia.,ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia
| | - Stephanie Spehar
- Anthropology Program, University of Wisconsin Oshkosh, Oshkosh, WI, USA
| | - Nicola Abram
- The University of Queensland, School of Biological Sciences, Brisbane, QLD, Australia.,ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia.,Living Landscape Alliance, 5 Jupiter House Calleva Park, Berkshire, RG7 8NN, United Kingdom
| | - Graham L Banes
- School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, United Kingdom.,CAS-MPG Partner Institute for Computational Biology, 320 Yue Yang Road, Shanghai, 200031, People's Republic of China.,Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
| | | | - Lisa Curran
- Department of Anthropology, Stanford University, Stanford, California, USA
| | - Laura d'Arcy
- Orangutan Tropical Peatland Project, The Center for International Cooperation in the Sustainable Management of Tropical Peatlands (CIMTROP), University of Palangka Raya, Central Kalimantan, Indonesia
| | - Roberto A Delgado
- Departments of Anthropology and Biological Sciences, Program in Integrative and Evolutionary Biology (IEB), University of Southern California, Los Angeles, USA
| | - Andi Erman
- GFA/KWF, Kapuas Hulu Program, West Kalimantan, Indonesia
| | - Benoit Goossens
- Organisms and Environment Division, Cardiff School of Biosciences, Cardiff University, Cardiff, United Kingdom.,Danau Girang Field Centre, c/o Sabah Wildlife Department, Wisma Muis, 88100, Kota Kinabalu, Sabah, Malaysia
| | | | - Max Houghton
- Research Centre in Evolutionary Anthropology, and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, United Kingdom
| | - Simon J Husson
- Orangutan Tropical Peatland Project, The Center for International Cooperation in the Sustainable Management of Tropical Peatlands (CIMTROP), University of Palangka Raya, Central Kalimantan, Indonesia
| | - Hjalmar S Kühl
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.,German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Germany
| | - Isabelle Lackman
- Kinabatangan Orang-utan Conservation Programme, Sandakan, Sabah, Malaysia
| | | | | | | | - Andrew J Marshall
- Department of Anthropology, Program in the Environment, and School for Natural Resources and Environment, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ari Meididit
- Biology Faculty, Universitas Nasional (UNAS), Jakarta, Indonesia.,World Wide Fund for Nature-Indonesia (WWF-Indonesia), Central Kalimantan Program, Indonesia
| | - Kerrie Mengersen
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, Australia
| | - Musnanda
- The Nature Conservancy (TNC) Indonesia, Jakarta, Indonesia
| | - Nardiyono
- Austindo Nusantara Jaya Tbk, Jakarta 12910, Indonesia
| | - Anton Nurcahyo
- College of Arts and Social Sciences, The Australian National University, Canberra, ACT, Australia
| | - Kisar Odom
- Borneo Orangutan Survival Foundation (BOSF), Nyaru Menteng, Central Kalimantan, Indonesia
| | - Adventus Panda
- World Wide Fund for Nature-Indonesia (WWF-Indonesia), Central Kalimantan Program, Indonesia
| | - Didik Prasetyo
- The Indonesian Association of Primatologists (PERHAPPI), Bogor, Indonesia
| | - Purnomo
- The Nature Conservancy (TNC) Indonesia, Jakarta, Indonesia
| | | | - Slamet Raharjo
- Faculty of Veterinary Medicine, Gadjah Mada University (UGM), Yogyakarta, 55281, Indonesia
| | - Dessy Ratnasari
- Lembaga Living Landscapes Indonesia (LLI), Pontianak, West Kalimantan, Indonesia
| | - Anne E Russon
- Psychology Department, Glendon College of York University, 2275 Bayview Avenue, Toronto, M4N 3M6, ON, Canada
| | - Adi H Santana
- Biology Faculty, Universitas Nasional (UNAS), Jakarta, Indonesia
| | - Eddy Santoso
- Yayasan Orangutan Indonesia (YAYORIN), Pangkalan Bun, Central Kalimantan, Indonesia
| | - Iman Sapari
- Yayasan Orangutan Indonesia (YAYORIN), Pangkalan Bun, Central Kalimantan, Indonesia
| | - Jamartin Sihite
- Restorasi Habitat Orangutan Indonesia (RHOI), Bogor, West Java, Indonesia
| | - Ahmat Suyoko
- Borneo Orangutan Survival Foundation (BOSF), Nyaru Menteng, Central Kalimantan, Indonesia
| | - Albertus Tjiu
- World Wide Fund for Nature-Indonesia (WWF-Indonesia), West Kalimantan Program, Indonesia
| | - Sri Suci Utami-Atmoko
- Biology Faculty, Universitas Nasional (UNAS), Jakarta, Indonesia.,Forum Orangutan Indonesia (FORINA), Bogor, West Java, Indonesia
| | - Carel P van Schaik
- Anthropological Institute and Museum, University of Zurich, Zurich, Switzerland
| | - Maria Voigt
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.,German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Germany
| | - Jessie Wells
- The University of Queensland, School of Biological Sciences, Brisbane, QLD, Australia.,ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia
| | - Serge A Wich
- Research Centre in Evolutionary Anthropology, and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, United Kingdom.,Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Sciencepark 904, Amsterdam, 1098, Netherlands
| | - Erik P Willems
- Anthropological Institute and Museum, University of Zurich, Zurich, Switzerland
| | - Erik Meijaard
- ARC Centre of Excellence for Environmental Decisions, The University of Queensland, Brisbane, QLD, Australia.,Borneo Futures, Bandar Seri Begawan, Brunei Darussalam
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Morgans CL, Guerrero AM, Ancrenaz M, Meijaard E, Wilson KA. Not more, but strategic collaboration needed to conserve Borneo's orangutan. Glob Ecol Conserv 2017. [DOI: 10.1016/j.gecco.2017.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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24
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Nijman V. Orangutan trade, confiscations, and lack of prosecutions in Indonesia. Am J Primatol 2017; 79. [DOI: 10.1002/ajp.22652] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/31/2017] [Accepted: 02/12/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Vincent Nijman
- Oxford Wildlife Trade Research Group; Oxford Brookes University; Oxford; UK
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25
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Spehar SN, Rayadin Y. Habitat use of Bornean Orangutans (Pongo pygmaeus morio) in an Industrial Forestry Plantation in East Kalimantan, Indonesia. INT J PRIMATOL 2017. [DOI: 10.1007/s10764-017-9959-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Estrada A, Garber PA, Rylands AB, Roos C, Fernandez-Duque E, Di Fiore A, Nekaris KAI, Nijman V, Heymann EW, Lambert JE, Rovero F, Barelli C, Setchell JM, Gillespie TR, Mittermeier RA, Arregoitia LV, de Guinea M, Gouveia S, Dobrovolski R, Shanee S, Shanee N, Boyle SA, Fuentes A, MacKinnon KC, Amato KR, Meyer ALS, Wich S, Sussman RW, Pan R, Kone I, Li B. Impending extinction crisis of the world's primates: Why primates matter. SCIENCE ADVANCES 2017; 3:e1600946. [PMID: 28116351 PMCID: PMC5242557 DOI: 10.1126/sciadv.1600946] [Citation(s) in RCA: 582] [Impact Index Per Article: 83.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 11/22/2016] [Indexed: 05/05/2023]
Abstract
Nonhuman primates, our closest biological relatives, play important roles in the livelihoods, cultures, and religions of many societies and offer unique insights into human evolution, biology, behavior, and the threat of emerging diseases. They are an essential component of tropical biodiversity, contributing to forest regeneration and ecosystem health. Current information shows the existence of 504 species in 79 genera distributed in the Neotropics, mainland Africa, Madagascar, and Asia. Alarmingly, ~60% of primate species are now threatened with extinction and ~75% have declining populations. This situation is the result of escalating anthropogenic pressures on primates and their habitats-mainly global and local market demands, leading to extensive habitat loss through the expansion of industrial agriculture, large-scale cattle ranching, logging, oil and gas drilling, mining, dam building, and the construction of new road networks in primate range regions. Other important drivers are increased bushmeat hunting and the illegal trade of primates as pets and primate body parts, along with emerging threats, such as climate change and anthroponotic diseases. Often, these pressures act in synergy, exacerbating primate population declines. Given that primate range regions overlap extensively with a large, and rapidly growing, human population characterized by high levels of poverty, global attention is needed immediately to reverse the looming risk of primate extinctions and to attend to local human needs in sustainable ways. Raising global scientific and public awareness of the plight of the world's primates and the costs of their loss to ecosystem health and human society is imperative.
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Affiliation(s)
- Alejandro Estrada
- Institute of Biology, National Autonomous University of Mexico, CP 04510, Mexico City, Mexico
| | - Paul A. Garber
- Department of Anthropology, Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana, IL 61801, USA
| | - Anthony B. Rylands
- Conservation International, 2011 Crystal Drive, Suite 500, Arlington, VA 22202, USA
| | - Christian Roos
- Gene Bank of Primates and Primate Genetics Laboratory, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany
| | | | - Anthony Di Fiore
- Department of Anthropology, University of Texas, Austin, TX 78705, USA
| | | | - Vincent Nijman
- Department of Social Sciences, Oxford Brookes University, Oxford OX3 0BP, U.K
| | - Eckhard W. Heymann
- Abteilung Verhaltensökologie und Soziobiologie, Deutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Kellnerweg 4, D-37077 Göttingen, Germany
| | - Joanna E. Lambert
- Department of Anthropology, University of Colorado at Boulder, 1350 Pleasant Street UCB 233, Boulder, CO 80309, USA
| | - Francesco Rovero
- Tropical Biodiversity Section, MUSE—Museo delle Scienze, Corso del Lavoro e della Scienza 3, 38122 Trento, Italy
| | - Claudia Barelli
- Tropical Biodiversity Section, MUSE—Museo delle Scienze, Corso del Lavoro e della Scienza 3, 38122 Trento, Italy
| | - Joanna M. Setchell
- Department of Anthropology, and Behaviour, Ecology and Evolution Research Centre, Durham University, South Road, Durham DH1 3LE, U.K
| | - Thomas R. Gillespie
- Departments of Environmental Sciences and Environmental Health, Rollins School of Public Health, Emory University, 400 Dowman Drive, Math and Science Center, Suite E510, Atlanta, GA 30322, USA
| | | | | | - Miguel de Guinea
- Department of Social Sciences, Oxford Brookes University, Oxford OX3 0BP, U.K
| | - Sidney Gouveia
- Department of Ecology, Federal University of Sergipe, São Cristóvão, SE 49100-000, Brazil
| | - Ricardo Dobrovolski
- Department of Zoology, Federal University of Bahia, Salvador, BA 40170-290, Brazil
| | - Sam Shanee
- Neotropical Primate Conservation, 23 Portland Road, Manchester M32 0PH, U.K
- Asociación Neotropical Primate Conservation Perú, 1187 Avenida Belaunde, La Esperanza, Yambrasbamba, Bongará, Amazonas, Peru
| | - Noga Shanee
- Neotropical Primate Conservation, 23 Portland Road, Manchester M32 0PH, U.K
- Asociación Neotropical Primate Conservation Perú, 1187 Avenida Belaunde, La Esperanza, Yambrasbamba, Bongará, Amazonas, Peru
| | - Sarah A. Boyle
- Department of Biology, Rhodes College, 2000 North Parkway, Memphis, TN 38112, USA
| | - Agustin Fuentes
- Department of Anthropology, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Katherine C. MacKinnon
- Department of Sociology and Anthropology, Saint Louis University, St. Louis, MO 63108, USA
| | - Katherine R. Amato
- Department of Anthropology, Northwestern University, 1810 Hinman Avenue, Evanston, IL 60208, USA
| | - Andreas L. S. Meyer
- Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Universidade Federal do Paraná, C.P. 19020, Curitiba, PR 81531-990, Brazil
| | - Serge Wich
- School of Natural Sciences and Psychology, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, U.K
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands
| | - Robert W. Sussman
- Department of Anthropology, Washington University, St. Louis, MO 63130, USA
| | - Ruliang Pan
- School of Anatomy, Physiology and Human Biology, University of Western Australia (M309), 35 Stirling Highway, Crawley, Western Australia 6009, Australia
| | - Inza Kone
- Centre Suisse des Recherches Scientifiques, Université de Cocody, Abidjan, Côte d’Ivoire
| | - Baoguo Li
- Xi’an Branch of Chinese Academy of Sciences, College of Life Sciences, Northwest University, No. 229, Taibai North Road, Xi’an 710069, China
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Freund C, Rahman E, Knott C. Ten years of orangutan-related wildlife crime investigation in West Kalimantan, Indonesia. Am J Primatol 2016; 79. [PMID: 27960033 DOI: 10.1002/ajp.22620] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 10/31/2016] [Accepted: 11/01/2016] [Indexed: 11/10/2022]
Abstract
Poaching for the pet trade is considered one of the main threats to orangutan survival, especially to the Bornean species (Pongo pygmaeus). However, there have been few attempts to quantify the number of individuals taken from the wild or to evaluate the drivers of the trade. Most orangutan poaching is thought to be opportunistic in nature, occurring in conjunction with deforestation for large-scale agriculture. Using data from our long-term wildlife crime field investigation program collected from 2004 to 2014, we evaluated the prevalence of orangutan poaching and its spatial distribution in and around Gunung Palung National Park, in the regencies (districts) of Ketapang and Kayong Utara, West Kalimantan, Indonesia. Over the project period, investigators uncovered 145 cases of orangutans being illegally held captive for the pet trade. There was a significant correlation between the extent of oil palm and the number of cases reported from each sub-district in the landscape, supporting the widely held hypothesis that orangutan poaching is opportunistic, and we found no evidence of orangutan trading rings (i.e., international traders) targeting Gunung Palung National Park. Over the past decade, there only has been one prosecution of orangutan trading in West Kalimantan, and weak law enforcement by Indonesian authorities remains the most significant challenge in addressing wildlife trade. We offer four recommendations to address this, including that Indonesia dedicate at least $3 million more to addressing orangutan poaching and trade in Kalimantan and that the country's wildlife protection laws be revised and strengthened, with the new laws socialized to a wide audience, including government officials and all aspects of civil society. As oil palm begins to expand into Africa, this study also may help predict how this will affect gorillas, chimpanzees, and bonobos, encouraging proactive conservation action.
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Affiliation(s)
- Cathryn Freund
- Gunung Palung Orangutan Conservation Program, Boston, Massachusetts.,Yayasan Palung, Ketapang, West Kalimantan, Indonesia
| | - Edi Rahman
- Yayasan Palung, Ketapang, West Kalimantan, Indonesia
| | - Cheryl Knott
- Gunung Palung Orangutan Conservation Program, Boston, Massachusetts.,Yayasan Palung, Ketapang, West Kalimantan, Indonesia.,Department of Anthropology, Boston University, Boston, Massachusetts
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28
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Nilsson D, Gramotnev G, Baxter G, Butler JRA, Wich SA, McAlpine CA. Community motivations to engage in conservation behavior to conserve the Sumatran orangutan. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2016; 30:816-826. [PMID: 26511405 DOI: 10.1111/cobi.12650] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 09/10/2015] [Accepted: 10/19/2015] [Indexed: 06/05/2023]
Abstract
Community-based conservation programs in developing countries are often based on the assumption that heteronomous motivation (e.g., extrinsic incentives such as economic rewards and pressure or coercion to act) will incite local communities to adopt conservation behaviors. However, this may not be as effective or sustainable as autonomous motivations (e.g., an intrinsic desire to act due to inherent enjoyment or self-identification with a behavior and through freedom of choice). We analyzed the comparative effectiveness of heteronomous versus autonomous approaches to community-based conservation programs through a case study of Sumatran orangutan (Pongo abelii) conservation in 3 villages in Indonesia. Each village had a different conservation program design. We surveyed people (n = 240) to determine their motivations for and behavior changes relative to orangutan and orangutan habitat (forest) protection. Heteronomous motivations (e.g., income from tourism) led to greater self-reporting of behavior change toward orangutan protection. However, they did not change self-reported behavior toward forest (i.e., orangutan habitat) protection. The most effective approach to creating self-reported behavior change throughout the community was a combination of autonomous and heteronomous motivations. Individuals who were heteronomously motivated to protect the orangutan were more likely to have changed attitudes than to have changed their self-reported behavior. These findings demonstrate that the current paradigm of motivating communities in developing countries to adopt conservation behaviors primarily through monetary incentives and rewards should consider integrating autonomous motivational techniques that promote the intrinsic values of conservation. Such a combination has a greater potential to achieve sustainable and cost-effective conservation outcomes. Our results highlight the importance of using in-depth sociopsychological analyses to inform the design and implementation of community-based conservation programs.
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Affiliation(s)
- Danielle Nilsson
- Landscape Ecology and Conservation Group, School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane, 4072, Australia
| | - Galina Gramotnev
- Research and Data Analysis Centre, GPO Box 1272, Aspley, QLD, 4034, Australia
| | - Greg Baxter
- Landscape Ecology and Conservation Group, School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane, 4072, Australia
| | - James R A Butler
- CSIRO Land and Water Flagship, GPO Box 2583, Brisbane, QLD, 4001, Australia
| | - Serge A Wich
- School of Natural Sciences and Psychology, Research Centre for Evolutionary Anthropology and Palaeoecology, Liverpool John Moores University, James Parsons Building, Byrom street, L33AF, Liverpool, United Kingdom
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Clive A McAlpine
- Landscape Ecology and Conservation Group, School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane, 4072, Australia
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30
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Miettinen J, Shi C, Liew SC. Land cover distribution in the peatlands of Peninsular Malaysia, Sumatra and Borneo in 2015 with changes since 1990. Glob Ecol Conserv 2016. [DOI: 10.1016/j.gecco.2016.02.004] [Citation(s) in RCA: 261] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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31
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Protecting Nonhuman Primates in Peri-Urban Environments: A Case Study of Neotropical Monkeys, Corridor Ecology, and Coastal Economy in the Caribe Sur of Costa Rica. ETHNOPRIMATOLOGY 2016. [DOI: 10.1007/978-3-319-30469-4_19] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Ramaswamy K, Yik WY, Wang XM, Oliphant EN, Lu W, Shibata D, Ryder OA, Hacia JG. Derivation of induced pluripotent stem cells from orangutan skin fibroblasts. BMC Res Notes 2015; 8:577. [PMID: 26475477 PMCID: PMC4609060 DOI: 10.1186/s13104-015-1567-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 10/07/2015] [Indexed: 01/08/2023] Open
Abstract
Background Orangutans are an endangered species whose natural habitats are restricted to the Southeast Asian islands of Borneo and Sumatra. Along with the African great apes, orangutans are among the closest living relatives to humans. For potential species conservation and functional genomics studies, we derived induced pluripotent stem cells (iPSCs) from cryopreserved somatic cells obtained from captive orangutans. Results Primary skin fibroblasts from two Sumatran orangutans were transduced with retroviral vectors expressing the human OCT4, SOX2, KLF4, and c-MYC factors. Candidate orangutan iPSCs were characterized by global gene expression and DNA copy number analysis. All were consistent with pluripotency and provided no evidence of large genomic insertions or deletions. In addition, orangutan iPSCs were capable of producing cells derived from all three germ layers in vitro through embryoid body differentiation assays and in vivo through teratoma formation in immune-compromised mice. Conclusions We demonstrate that orangutan skin fibroblasts are capable of being reprogrammed into iPSCs with hallmark molecular signatures and differentiation potential. We suggest that reprogramming orangutan somatic cells in genome resource banks could provide new opportunities for advancing assisted reproductive technologies relevant for species conservation efforts. Furthermore, orangutan iPSCs could have applications for investigating the phenotypic relevance of genomic changes that occurred in the human, African great ape, and/or orangutan lineages. This provides opportunities for orangutan cell culture models that would otherwise be impossible to develop from living donors due to the invasive nature of the procedures required for obtaining primary cells. Electronic supplementary material The online version of this article (doi:10.1186/s13104-015-1567-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Krishna Ramaswamy
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
| | - Wing Yan Yik
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
| | - Xiao-Ming Wang
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
| | - Erin N Oliphant
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
| | - Wange Lu
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
| | - Darryl Shibata
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Oliver A Ryder
- San Diego Zoo Institute for Conservation Research , San Diego Zoo Global, San Diego, CA, USA.
| | - Joseph G Hacia
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA, USA.
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Struebig MJ, Fischer M, Gaveau DLA, Meijaard E, Wich SA, Gonner C, Sykes R, Wilting A, Kramer-Schadt S. Anticipated climate and land-cover changes reveal refuge areas for Borneo's orang-utans. GLOBAL CHANGE BIOLOGY 2015; 21:2891-2904. [PMID: 25559092 DOI: 10.1111/gcb.12814] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 11/13/2014] [Indexed: 06/04/2023]
Abstract
Habitat loss and climate change pose a double jeopardy for many threatened taxa, making the identification of optimal habitat for the future a conservation priority. Using a case study of the endangered Bornean orang-utan, we identify environmental refuges by integrating bioclimatic models with projected deforestation and oil-palm agriculture suitability from the 1950s to 2080s. We coupled a maximum entropy algorithm with information on habitat needs to predict suitable habitat for the present day and 1950s. We then projected to the 2020s, 2050s and 2080s in models incorporating only land-cover change, climate change or both processes combined. For future climate, we incorporated projections from four model and emission scenario combinations. For future land cover, we developed spatial deforestation predictions from 10 years of satellite data. Refuges were delineated as suitable forested habitats identified by all models that were also unsuitable for oil palm - a major threat to tropical biodiversity. Our analyses indicate that in 2010 up to 260,000 km(2) of Borneo was suitable habitat within the core orang-utan range; an 18-24% reduction since the 1950s. Land-cover models predicted further decline of 15-30% by the 2080s. Although habitat extent under future climate conditions varied among projections, there was majority consensus, particularly in north-eastern and western regions. Across projections habitat loss due to climate change alone averaged 63% by 2080, but 74% when also considering land-cover change. Refuge areas amounted to 2000-42,000 km(2) depending on thresholds used, with 900-17,000 km(2) outside the current species range. We demonstrate that efforts to halt deforestation could mediate some orang-utan habitat loss, but further decline of the most suitable areas is to be expected given projected changes to climate. Protected refuge areas could therefore become increasingly important for ongoing translocation efforts. We present an approach to help identify such areas for highly threatened species given environmental changes expected this century.
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Affiliation(s)
- Matthew J Struebig
- Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, UK
| | - Manuela Fischer
- Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
- Department of Forestry and Ecosystem Science, University of Melbourne, Creswick, Vic., 3366, Australia
| | - David L A Gaveau
- Center for International Forestry Research (CIFOR), P.O. Box 0113 BOCBD, Bogor, 16000, Indonesia
| | - Erik Meijaard
- Center for International Forestry Research (CIFOR), P.O. Box 0113 BOCBD, Bogor, 16000, Indonesia
- Borneo Futures, People and Nature Consulting International, Jakarta, Indonesia
- Australian Research Council Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Qld, Australia
| | - Serge A Wich
- Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands
| | - Catherine Gonner
- Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, UK
| | - Rachel Sykes
- Durrell Institute of Conservation and Ecology (DICE), School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, UK
| | - Andreas Wilting
- Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
| | - Stephanie Kramer-Schadt
- Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
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Cibot M, Bortolamiol S, Seguya A, Krief S. Chimpanzees facing a dangerous situation: A high-traffic asphalted road in the Sebitoli area of Kibale National Park, Uganda. Am J Primatol 2015; 77:890-900. [PMID: 25864720 DOI: 10.1002/ajp.22417] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 03/12/2015] [Accepted: 03/17/2015] [Indexed: 11/08/2022]
Abstract
Despite the spread of road infrastructures throughout Africa to support regional development, industry, and tourism, few studies have examined how wild animals adapt their behavior and ecology in road-forest ecotones. Indeed, while numerous studies have demonstrated chimpanzee adaptability in anthropogenic landscapes, none have examined the effects of asphalted highways on wild chimpanzee behaviors. In a 29-month survey, we assessed the dangers posed by an asphalted road crossing the Sebitoli area of Kibale National Park (Uganda). We analyzed 122 individual chimpanzee crossings. Although the asphalted road represents a substantial threat to crossing animals (89 motorized vehicles per hour use this road and individuals of six different primate species were killed in 1 year), chimpanzees took into account this risk. More than 90% of the individuals looked right and left before and while crossing. Chimpanzees crossed in small subgroups (average 2.7 subgroups of 2.1 individuals per crossing event). Whole parties crossed more rapidly when chimpanzees were more numerous in the crossing groups. The individuals most vulnerable to the dangers of road crossing (females with dependents, immature, and severely injured individuals) crossed less frequently compared with non-vulnerable individuals (lone and healthy adolescents and adults). Moreover, healthy adult males, who were the most frequent crossing individuals, led progressions more frequently when crossing the road than when climbing or descending feeding trees. Almost 20% of the individuals that crossed paid attention to conspecifics by checking on them or waiting for them while crossing. These observations are relevant for our understanding of adaptive behavior among chimpanzees in human-impacted habitats. Further investigations are needed to better evaluate the effects of busy roads on adolescent female dispersal and on their use of territories. Mitigation measures (e.g., bridges, underpasses, reduced speed limits, speed-bumps, signposts, or police controls) should be established in this area.
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Affiliation(s)
- Marie Cibot
- UMR 7206, Eco-Anthropologie et Ethnobiologie, Muséum national d'Histoire naturelle, Paris, France.,Great Ape Conservation Project (GACP), Sebitoli Research Station, Kibale National Park, Fort Portal, Uganda.,UMR 7179, Mécanismes adaptatifs: des organismes aux communautés, Muséum national d'Histoire naturelle, Paris, France
| | - Sarah Bortolamiol
- UMR 7206, Eco-Anthropologie et Ethnobiologie, Muséum national d'Histoire naturelle, Paris, France.,Great Ape Conservation Project (GACP), Sebitoli Research Station, Kibale National Park, Fort Portal, Uganda.,UMR 7533, Laboratoire Dynamiques Sociales et Recomposition des Espaces, Paris Diderot University (Sorbonne Paris Cité), Paris, France
| | | | - Sabrina Krief
- UMR 7206, Eco-Anthropologie et Ethnobiologie, Muséum national d'Histoire naturelle, Paris, France.,Great Ape Conservation Project (GACP), Sebitoli Research Station, Kibale National Park, Fort Portal, Uganda
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Hockings KJ, McLennan MR, Carvalho S, Ancrenaz M, Bobe R, Byrne RW, Dunbar RIM, Matsuzawa T, McGrew WC, Williamson EA, Wilson ML, Wood B, Wrangham RW, Hill CM. Apes in the Anthropocene: flexibility and survival. Trends Ecol Evol 2015; 30:215-22. [PMID: 25766059 DOI: 10.1016/j.tree.2015.02.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 11/26/2022]
Abstract
We are in a new epoch, the Anthropocene, and research into our closest living relatives, the great apes, must keep pace with the rate that our species is driving change. While a goal of many studies is to understand how great apes behave in natural contexts, the impact of human activities must increasingly be taken into account. This is both a challenge and an opportunity, which can importantly inform research in three diverse fields: cognition, human evolution, and conservation. No long-term great ape research site is wholly unaffected by human influence, but research at those that are especially affected by human activity is particularly important for ensuring that our great ape kin survive the Anthropocene.
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Affiliation(s)
- Kimberley J Hockings
- Anthropology Centre for Conservation, Environment and Development, Oxford Brookes University, Oxford, UK; Centre for Research in Anthropology (CRIA-FCSH/UNL), Lisbon, Portugal.
| | - Matthew R McLennan
- Anthropology Centre for Conservation, Environment and Development, Oxford Brookes University, Oxford, UK
| | - Susana Carvalho
- Center for the Advanced Study of Hominid Paleobiology, George Washington University, Washington DC, WA 20052, USA; Interdisciplinary Center for Archaeology and Evolution of Human Behavior, Universidade do Algarve, Faro, Portugal
| | - Marc Ancrenaz
- HUTAN/Kinabatangan Orangutan Conservation Programme, Sabah, Malaysia
| | - René Bobe
- Center for the Advanced Study of Hominid Paleobiology, George Washington University, Washington DC, WA 20052, USA
| | - Richard W Byrne
- School of Psychology & Neuroscience, University of St Andrews, St Andrews, UK
| | - Robin I M Dunbar
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - Tetsuro Matsuzawa
- Primate Research Institute, Kyoto University, Inuyama, Japan; Japan Monkey Centre, Inuyama, Japan
| | - William C McGrew
- Department of Archaeology and Anthropology, University of Cambridge, Cambridge, UK
| | | | - Michael L Wilson
- Department of Anthropology and Department of Ecology, Evolution and Behavior, University of Minnesota, Minneapolis, MN 55455, USA
| | - Bernard Wood
- Center for the Advanced Study of Hominid Paleobiology, George Washington University, Washington DC, WA 20052, USA
| | - Richard W Wrangham
- Department of Human Evolutionary Biology, Harvard University, Boston, MA 02138, USA
| | - Catherine M Hill
- Anthropology Centre for Conservation, Environment and Development, Oxford Brookes University, Oxford, UK
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Rayadin Y, Spehar SN. Body mass of wild Bornean orangutans living in human-dominated landscapes: Implications for understanding their ecology and conservation. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2015; 157:339-46. [PMID: 25682922 DOI: 10.1002/ajpa.22709] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/21/2015] [Indexed: 11/09/2022]
Abstract
Body mass is a key determinant of a species' ecology, including locomotion, foraging strategies, and energetics. Accurate information on the body mass of wild primates allows us to develop explanatory models for relationships among body size, ecology, and behavior and is crucial for reconstructing the ecology and behavior of fossil primates and hominins. Information on body mass can also provide indirect information on health and can be an important tool for conservation in the context of increasingly widespread habitat disturbance. This study reports body mass data recorded for wild Northeast Bornean orangutans (Pongo pygmaeus morio) during relocation efforts in forestry and oil palm plantations in East Kalimantan, Indonesia. The average mass of flanged adult males (n = 12, 74 ± 9.78 kg) and adult females (n = 7, 35.29 ± 7.32 kg) from this study were 13.6% and 9% lower, respectively, than the only other published wild Bornean orangutan body mass measurements, but the range of weights for both males and females was larger for this study. This pattern could be due to sampling error, data collection differences, or the influence of habitat disturbance, specifically a lack of access to resources, on individual health. When necessary relocations present the opportunity, we encourage researchers to prioritize the collection of body size data for the purposes of understanding ecology but also as an indirect means of monitoring population viability. As primate habitat becomes increasingly fragmented and altered by humans such data will become critical to our ability to make informed conservation decisions.
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Affiliation(s)
- Yaya Rayadin
- Ecology and Conservation Center for Tropical Studies (ECOSITROP), Samarinda, East Kalimantan, Indonesia.,Biodiversity Conservation Laboratory, Forestry Faculty of Mulawarman University, Samarinda, 75123, East Kalimantan, Indonesia
| | - Stephanie N Spehar
- Anthropology Program, University of Wisconsin Oshkosh, Oshkosh, WI, 54901, USA
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Abram NK, Meijaard E, Wells JA, Ancrenaz M, Pellier AS, Runting RK, Gaveau D, Wich S, Nardiyono, Tjiu A, Nurcahyo A, Mengersen K. Mapping perceptions of species' threats and population trends to inform conservation efforts: the Bornean orangutan case study. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12286] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Nicola K. Abram
- Living Landscape Alliance; Aldermaston Reading RG7 8NN UK
- ARC Centre of Excellence for Environmental Decisions; University of Queensland; Brisbane Qld 4072 Australia
- HUTAN/Kinabatangan Orang-utan Conservation Programme; Kota Kinabalu Sabah Malaysia
- Durrell Institute for Conservation and Ecology; School of Anthropology and Conservation; University of Kent; Canterbury Kent UK
- Borneo Futures; People and Nature Consulting International; Ciputat Jakarta 15412 Indonesia
| | - Erik Meijaard
- Living Landscape Alliance; Aldermaston Reading RG7 8NN UK
- Borneo Futures; People and Nature Consulting International; Ciputat Jakarta 15412 Indonesia
- Center for International Forestry Research; PO Box 0113 BOCBD Bogor 16000 Indonesia
- School of Archaeology & Anthropology; Australian National University; Canberra ACT 0200 Australia
| | - Jessie A. Wells
- ARC Centre of Excellence for Environmental Decisions; University of Queensland; Brisbane Qld 4072 Australia
| | - Marc Ancrenaz
- HUTAN/Kinabatangan Orang-utan Conservation Programme; Kota Kinabalu Sabah Malaysia
- Borneo Futures; People and Nature Consulting International; Ciputat Jakarta 15412 Indonesia
- Sabah Wildlife Department; Wisma Muis; Kota Kinabalu Sabah Malaysia
| | - Anne-Sophie Pellier
- Durrell Institute for Conservation and Ecology; School of Anthropology and Conservation; University of Kent; Canterbury Kent UK
- Borneo Futures; People and Nature Consulting International; Ciputat Jakarta 15412 Indonesia
- Center for International Forestry Research; PO Box 0113 BOCBD Bogor 16000 Indonesia
| | - Rebecca K. Runting
- ARC Centre of Excellence for Environmental Decisions; University of Queensland; Brisbane Qld 4072 Australia
| | - David Gaveau
- Center for International Forestry Research; PO Box 0113 BOCBD Bogor 16000 Indonesia
| | - Serge Wich
- Research Centre in Evolutionary Anthropology and Palaeoecology; School of Natural Sciences and Psychology; Liverpool John Moores University; Liverpool UK
- Institute for Biodiversity and Ecosystem Dynamics; University of Amsterdam; 1098 XH Amsterdam The Netherlands
| | - Nardiyono
- Austindo Nusantara Jaya Agri; Jakarta Indonesia
| | | | - Anton Nurcahyo
- School of Archaeology & Anthropology; Australian National University; Canberra ACT 0200 Australia
| | - Kerrie Mengersen
- School of Mathematical Sciences; Queensland University of Technology; Brisbane Qld Australia
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Wilson HB, Meijaard E, Venter O, Ancrenaz M, Possingham HP. Conservation strategies for orangutans: reintroduction versus habitat preservation and the benefits of sustainably logged forest. PLoS One 2014; 9:e102174. [PMID: 25025134 PMCID: PMC4099073 DOI: 10.1371/journal.pone.0102174] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 06/16/2014] [Indexed: 11/18/2022] Open
Abstract
The Sumatran orangutan is currently listed by the IUCN as critically endangered and the Bornean species as endangered. Unless effective conservation measures are enacted quickly, most orangutan populations without adequate protection face a dire future. Two main strategies are being pursued to conserve orangutans: (i) rehabilitation and reintroduction of ex-captive or displaced individuals; and (ii) protection of their forest habitat to abate threats like deforestation and hunting. These strategies are often mirrored in similar programs to save other valued and endangered mega-fauna. Through GIS analysis, collating data from across the literature, and combining this information within a modelling and decision analysis framework, we analysed which strategy or combination of strategies is the most cost-effective at maintaining wild orangutan populations, and under what conditions. We discovered that neither strategy was optimal under all circumstances but was dependent on the relative cost per orangutan, the timescale of management concern, and the rate of deforestation. Reintroduction, which costs twelve times as much per animal as compared to protection of forest, was only a cost-effective strategy at very short timescales. For time scales longer than 10–20 years, forest protection is the more cost-efficient strategy for maintaining wild orangutan populations. Our analyses showed that a third, rarely utilised strategy is intermediate: introducing sustainable logging practices and protection from hunting in timber production forest. Maximum long-term cost-efficiency is achieved by working in conservation forest. However, habitat protection involves addressing complex conservation issues and conflicting needs at the landscape level. We find a potential resolution in that well-managed production forests could achieve intermediate conservation outcomes. This has broad implications for sustaining biodiversity more generally within an economically productive landscape. Insights from this analysis should provide a better framework to prioritize financial investments, and facilitate improved integration between the organizations that implement these strategies.
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Affiliation(s)
- Howard B. Wilson
- Australian Research Council Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Australia
- * E-mail:
| | - Erik Meijaard
- Australian Research Council Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Australia
- People and Nature Consulting International, Jakarta, Indonesia
| | - Oscar Venter
- Australian Research Council Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Australia
- Centre for Tropical Environmental and Sustainability Science and the School of Marine and Tropical Biology, James Cook University, Cairns, Australia
| | - Marc Ancrenaz
- Kinabatangan Orangutan Conservation Project, Sandakan, Malaysia
| | - Hugh P. Possingham
- Australian Research Council Centre of Excellence for Environmental Decisions, School of Biological Sciences, The University of Queensland, Brisbane, Australia
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Of Pongo, palms and perceptions: a multidisciplinary assessment of Bornean orang-utans Pongo pygmaeus in an oil palm context. ORYX 2014. [DOI: 10.1017/s0030605313001270] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
AbstractThe oil palm industry is blamed for the demise of iconic species such as the orang-utan Pongo pygmaeus in Borneo but production of, and demand for, this commodity continue to expand. Therefore, a better understanding of how the orang-utan is adapting to human-transformed environments is crucial for conserving the species. Results from a combination of repeated ground transects, aerial presence/absence surveys, and interviews of workers in mature plantations of the lower Kinabatangan River floodplain (eastern Sabah) provide an overall picture of the current status of orang-utans in an established agro-industrial oil palm landscape. Our results show that orang-utans disperse into mature plantations, use oil palm trees for nesting, and feed on mature fruits. Most oil palm workers report orang-utans of all age–sex classes within the estates but fail to report any negative effect of the animals on productivity of mature palms ≥5 years. Our surveys also show that orang-utan presence in the mature oil palm landscape is correlated with proximity to natural forest patches. These results suggest that forest patches, even when small, fragmented and degraded, are required to sustain the species in human-transformed landscapes. Homogenous oil palm plantations are incompatible with viable populations of orang-utans. The cessation of further forest conversion to agriculture and the enforcement of better management practices are needed to reduce the threat of oil palm development to orang-utan survival.
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Coming down from the trees: is terrestrial activity in Bornean orangutans natural or disturbance driven? Sci Rep 2014; 4:4024. [PMID: 24526001 PMCID: PMC3923384 DOI: 10.1038/srep04024] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 01/16/2014] [Indexed: 11/16/2022] Open
Abstract
The orangutan is the world's largest arboreal mammal, and images of the red ape moving through the tropical forest canopy symbolise its typical arboreal behaviour. Records of terrestrial behaviour are scarce and often associated with habitat disturbance. We conducted a large-scale species-level analysis of ground-based camera-trapping data to evaluate the extent to which Bornean orangutans Pongo pygmaeus come down from the trees to travel terrestrially, and whether they are indeed forced to the ground primarily by anthropogenic forest disturbances. Although the degree of forest disturbance and canopy gap size influenced terrestriality, orangutans were recorded on the ground as frequently in heavily degraded habitats as in primary forests. Furthermore, all age-sex classes were recorded on the ground (flanged males more often). This suggests that terrestrial locomotion is part of the Bornean orangutan's natural behavioural repertoire to a much greater extent than previously thought, and is only modified by habitat disturbance. The capacity of orangutans to come down from the trees may increase their ability to cope with at least smaller-scale forest fragmentation, and to cross moderately open spaces in mosaic landscapes, although the extent of this versatility remains to be investigated.
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Davis JT, Mengersen K, Abram NK, Ancrenaz M, Wells JA, Meijaard E. It's not just conflict that motivates killing of orangutans. PLoS One 2013; 8:e75373. [PMID: 24130707 PMCID: PMC3793980 DOI: 10.1371/journal.pone.0075373] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Accepted: 08/15/2013] [Indexed: 11/19/2022] Open
Abstract
We investigated why orangutans are being killed in Kalimantan, Indonesia, and the role of conflict in these killings. Based on an analysis of interview data from over 5,000 respondents in over 450 villages, we also assessed the socio-ecological factors associated with conflict and non-conflict killings. Most respondents never kill orangutans. Those who reported having personally killed an orangutan primarily did so for non-conflict reasons; for example, 56% of these respondents said that the reason they had killed an orangutan was to eat it. Of the conflict-related reasons for killing, the most common reasons orangutans were killed was fear of orangutans or in self-defence. A similar pattern was evident among reports of orangutan killing by other people in the villages. Regression analyses indicated that religion and the percentage of intact forest around villages were the strongest socio-ecological predictors of whether orangutans were killed for conflict or non-conflict related reasons. Our data indicate that between 44,170 and 66,570 orangutans were killed in Kalimantan within the respondents' active hunting lifetimes: between 12,690 and 29,024 for conflict reasons (95%CI) and between 26,361 and 41,688 for non-conflict reasons (95% CI). These findings confirm that habitat protection alone will not ensure the survival of orangutans in Indonesian Borneo, and that effective reduction of orangutan killings is urgently needed.
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Affiliation(s)
- Jacqueline T. Davis
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Kerrie Mengersen
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Nicola K. Abram
- Durrell Institute for Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, Kent, United Kingdom
- HUTAN –Kinabatangan Orang-utan Conservation Programme, Sandakan, Sabah, Malaysia
- Borneo Futures Project, People and Nature Consulting International, Jakarta, Indonesia
| | - Marc Ancrenaz
- HUTAN –Kinabatangan Orang-utan Conservation Programme, Sandakan, Sabah, Malaysia
- Borneo Futures Project, People and Nature Consulting International, Jakarta, Indonesia
| | - Jessie A. Wells
- ARC Centre of Excellence for Environmental Decisions, University of Queensland, Brisbane, Australia
| | - Erik Meijaard
- Borneo Futures Project, People and Nature Consulting International, Jakarta, Indonesia
- ARC Centre of Excellence for Environmental Decisions, University of Queensland, Brisbane, Australia
- School of Archaeology & Anthropology, Australian National University, Canberra, Australia
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Game ET, Meijaard E, Sheil D, McDonald-Madden E. Conservation in a Wicked Complex World; Challenges and Solutions. Conserv Lett 2013. [DOI: 10.1111/conl.12050] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Edward T. Game
- The Nature Conservancy; Conservation Science; West End Queensland 4101 Australia
- ARC Centre of Excellence for Environmental Decisions; School of Biological Sciences; University of Queensland; St Lucia Queensland 4072 Australia
| | - Erik Meijaard
- ARC Centre of Excellence for Environmental Decisions; School of Biological Sciences; University of Queensland; St Lucia Queensland 4072 Australia
- People and Nature Consulting International; Jakarta Indonesia
- Center for International Forestry Research; Bogor Indonesia
| | - Douglas Sheil
- Center for International Forestry Research; Bogor Indonesia
- Institute of Tropical Forest Conservation; Mbarara University of Science and Technology; PO Box 44 Kabale Uganda
- School of Environmental Science and Management; Southern Cross University; PO Box 157 Lismore NSW 2480 Australia
| | - Eve McDonald-Madden
- ARC Centre of Excellence for Environmental Decisions; School of Biological Sciences; University of Queensland; St Lucia Queensland 4072 Australia
- CSIRO Ecosystem Sciences; Ecosciences Precinct; 41 Boggo Rd Dutton Park Queensland 4102 Australia
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Understanding the impacts of land-use policies on a threatened species: is there a future for the Bornean orang-utan? PLoS One 2012; 7:e49142. [PMID: 23145100 PMCID: PMC3492325 DOI: 10.1371/journal.pone.0049142] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 10/01/2012] [Indexed: 11/19/2022] Open
Abstract
The geographic distribution of Bornean orang-utans and its overlap with existing land-use categories (protected areas, logging and plantation concessions) is a necessary foundation to prioritize conservation planning. Based on an extensive orang-utan survey dataset and a number of environmental variables, we modelled an orang-utan distribution map. The modelled orang-utan distribution map covers 155,106 km2 (21% of Borneo's landmass) and reveals four distinct distribution areas. The most important environmental predictors are annual rainfall and land cover. The overlap of the orang-utan distribution with land-use categories reveals that only 22% of the distribution lies in protected areas, but that 29% lies in natural forest concessions. A further 19% and 6% occurs in largely undeveloped oil palm and tree plantation concessions, respectively. The remaining 24% of the orang-utan distribution range occurs outside of protected areas and outside of concessions. An estimated 49% of the orang-utan distribution will be lost if all forest outside of protected areas and logging concessions is lost. To avoid this potential decline plantation development in orang-utan habitats must be halted because it infringes on national laws of species protection. Further growth of the plantation sector should be achieved through increasing yields in existing plantations and expansion of new plantations into areas that have already been deforested. To reach this goal a large scale island-wide land-use masterplan is needed that clarifies which possible land uses and managements are allowed in the landscape and provides new standardized strategic conservation policies. Such a process should make much better use of non-market values of ecosystem services of forests such as water provision, flood control, carbon sequestration, and sources of livelihood for rural communities. Presently land use planning is more driven by vested interests and direct and immediate economic gains, rather than by approaches that take into consideration social equity and environmental sustainability.
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Meijaard E, Sheil D. The dilemma of green business in tropical forests: how to protect what it cannot identify. Conserv Lett 2012. [DOI: 10.1111/j.1755-263x.2012.00252.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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