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Bridgeland-Stephens L, Thorpe SKS, Chappell J. Potential resilience treatments for orangutans ( Pongo spp.): Lessons from a scoping review of interventions in humans and other animals. Anim Welf 2023; 32:e77. [PMID: 38487448 PMCID: PMC10937215 DOI: 10.1017/awf.2023.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/25/2023] [Accepted: 11/02/2023] [Indexed: 03/17/2024]
Abstract
Wild orangutans (Pongo spp.) rescued from human-wildlife conflict must be adequately rehabilitated before being returned to the wild. It is essential that released orangutans are able to cope with stressful challenges such as food scarcity, navigating unfamiliar environments, and regaining independence from human support. Although practical skills are taught to orangutans in rehabilitation centres, post-release survival rates are low. Psychological resilience, or the ability to 'bounce back' from stress, may be a key missing piece of the puzzle. However, there is very little knowledge about species-appropriate interventions which could help captive orangutans increase resilience to stress. This scoping review summarises and critically analyses existing human and non-human animal resilience literature and provides suggestions for the development of interventions for orangutans in rehabilitation. Three scientific databases were searched in 2021 and 2023, resulting in 63 human studies and 266 non-human animal studies. The first section brings together human resilience interventions, identifying common themes and assessing the applicability of human interventions to orangutans in rehabilitation. The second section groups animal interventions into categories of direct stress, separation stress, environmental conditions, social stress, and exercise. In each category, interventions are critically analysed to evaluate their potential for orangutans in rehabilitation. The results show that mild and manageable forms of intervention have the greatest potential benefit with the least amount of risk. The study concludes by emphasising the need for further investigation and experimentation, to develop appropriate interventions and measure their effect on the post-release survival rate of orangutans.
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Affiliation(s)
| | | | - Jackie Chappell
- School of Biosciences, University of Birmingham, Birmingham, UK
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2
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Preuschoft S, Marshall AJ, Scott L, Badriyah SN, Purba MDT, Yuliani E, Corbi P, Yassir I, Wibawanto MA, Kalcher-Sommersguter E. The Development of Feeding Competence in Rehabilitant Orphaned Orangutans and How to Measure It. Animals (Basel) 2023; 13:2111. [PMID: 37443909 DOI: 10.3390/ani13132111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/17/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
For critically endangered species, restorative conservation becomes increasingly important. Successful re-introduction of rescued wild orangutan orphans requires rehabilitation mimicking maternal rearing in the wild. Feeding competence-what to eat, where and when to find food-needs to be learned before re-introduction. We observed seven orphans (2-10 years old) for a period of 3 years during their rehabilitation at the Yayasan Jejak Pulang forest school. Of the 111 plant genera eaten by the orphans, 92 percent were known orangutan food plants. Five plant genera were eaten by all orphans in over 90 percent of the months within the observation period. The Fruit Availability Index (FAI) was used to predict which parts of a plant were consumed by the orphans. We found that the orphans ate primarily fruit when the FAI was high, but consumed more young leaves, cambium, and pith when FAI was low. Thus, the orphans exhibited food choices very similar to mature wild orangutans and appropriate to forest productivity. The orphans' acquisition of feeding competence was facilitated by their immersion into a natural forest environment in combination with possibilities for observational learning from conspecifics as well as caregivers modelling food processing and consumption.
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Affiliation(s)
- Signe Preuschoft
- Ape Protection Unit, Four Paws, 22767 Hamburg, Germany
- Yayasan Jejak Pulang, Samboja 75276, East Kalimantan, Indonesia
| | - Andrew J Marshall
- Department of Anthropology, Department of Ecology and Evolutionary Biology, Program in the Environment, School for Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lorna Scott
- Faculty of Biology and Psychology, Georg-August-Universität Göttingen, 37083 Göttingen, Germany
| | | | | | - Erma Yuliani
- Yayasan Jejak Pulang, Samboja 75276, East Kalimantan, Indonesia
| | - Paloma Corbi
- Ape Protection Unit, Four Paws, 22767 Hamburg, Germany
| | - Ishak Yassir
- BPSILHK, Ministry of Environment and Forestry, Samboja 75276, East Kalimantan, Indonesia
| | - M Ari Wibawanto
- BKSDA Kalimantan Timur, Ministry of Environment and Forestry, Samarinda 75243, East Kalimantan, Indonesia
| | - Elfriede Kalcher-Sommersguter
- Ape Protection Unit, Four Paws International, 1150 Vienna, Austria
- Institute of Biology, University of Graz, 8010 Graz, Austria
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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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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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Widyastuti K, Reuillon R, Chapron P, Abdussalam W, Nasir D, Harrison ME, Morrogh-Bernard H, Imron MA, Berger U. Assessing the impact of forest structure disturbances on the arboreal movement and energetics of orangutans—An agent-based modeling approach. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.983337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Agent-based models have been developed and widely employed to assess the impact of disturbances or conservation management on animal habitat use, population development, and viability. However, the direct impacts of canopy disturbance on the arboreal movement of individual primates have been less studied. Such impacts could shed light on the cascading effects of disturbances on animal health and fitness. Orangutans are an arboreal primate that commonly encounters habitat quality deterioration due to land-use changes and related disturbances such as forest fires. Forest disturbance may, therefore, create a complex stress scenario threatening orangutan populations. Due to forest disturbances, orangutans may adapt to employ more terrestrial, as opposed to arboreal, movements potentially prolonging the search for fruiting and nesting trees. In turn, this may lead to changes in daily activity patterns (i.e., time spent traveling, feeding, and resting) and available energy budget, potentially decreasing the orangutan's fitness. We developed the agent-based simulation model BORNEO (arBOReal aNimal movEment mOdel), which explicitly describes both orangutans' arboreal and terrestrial movement in a forest habitat, depending on distances between trees and canopy structures. Orangutans in the model perform activities with a motivation to balance energy intake and expenditure through locomotion. We tested the model using forest inventory data obtained in Sebangau National Park, Central Kalimantan, Indonesia. This allowed us to construct virtual forests with real characteristics including tree connectivity, thus creating the potential to expand the environmental settings for simulation experiments. In order to parameterize the energy related processes of the orangutans described in the model, we applied a computationally intensive evolutionary algorithm and evaluated the simulation results against observed behavioral patterns of orangutans. Both the simulated variability and proportion of activity budgets including feeding, resting, and traveling time for female and male orangutans confirmed the suitability of the model for its purpose. We used the calibrated model to compare the activity patterns and energy budgets of orangutans in both natural and disturbed forests . The results confirm field observations that orangutans in the disturbed forest are more likely to experience deficit energy balance due to traveling to the detriment of feeding time. Such imbalance is more pronounced in males than in females. The finding of a threshold of forest disturbances that affects a significant change in activity and energy budgets suggests potential threats to the orangutan population. Our study introduces the first agent-based model describing the arboreal movement of primates that can serve as a tool to investigate the direct impact of forest changes and disturbances on the behavior of species such as orangutans. Moreover, it demonstrates the suitability of high-performance computing to optimize the calibration of complex agent-based models describing animal behavior at a fine spatio-temporal scale (1-m and 1-s granularity).
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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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Santika T, Sherman J, Voigt M, Ancrenaz M, Wich SA, Wilson KA, Possingham H, Massingham E, Seaman DJI, Ashbury AM, Azvi TS, Banes GL, Barrow EJ, Burslem DFRP, Delgado RA, Erman A, Fredriksson G, Goossens B, Houghton M, Indrawan TP, Jaya RL, Kanamori T, Knott CD, Leiman A, Liswanto D, Mach M, Marshall AJ, Martin JGA, Midora L, Miller A, Milne S, Morgans C, Nardiyono N, Perwitasari-Farajallah D, Priatna D, Risch R, Riyadi GM, Russon A, Sembiring J, Setiawan E, Sidiq M, Simon D, Spehar S, Struebig MJ, Sumardi I, Tjiu A, Wahyudi R, Yanuar A, Meijaard E. Effectiveness of 20 years of conservation investments in protecting orangutans. Curr Biol 2022; 32:1754-1763.e6. [PMID: 35276097 DOI: 10.1016/j.cub.2022.02.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/03/2022] [Accepted: 02/16/2022] [Indexed: 11/24/2022]
Abstract
Conservation strategies are rarely systematically evaluated, which reduces transparency, hinders the cost-effective deployment of resources, and hides what works best in different contexts. Using data on the iconic and critically endangered orangutan (Pongo spp.), we developed a novel spatiotemporal framework for evaluating conservation investments. We show that around USD 1 billion was invested between 2000 and 2019 into orangutan conservation by governments, nongovernmental organizations, companies, and communities. Broken down by allocation to different conservation strategies, we find that habitat protection, patrolling, and public outreach had the greatest return on investment for maintaining orangutan populations. Given the variability in threats, land-use opportunity costs, and baseline remunerations in different regions, there were differential benefits per dollar invested across conservation activities and regions. We show that although challenging from a data and analysis perspective, it is possible to fully understand the relationships between conservation investments and outcomes and the external factors that influence these outcomes. Such analyses can provide improved guidance toward a more effective biodiversity conservation. Insights into the spatiotemporal interplays between the costs and benefits driving effectiveness can inform decisions about the most suitable orangutan conservation strategies for halting population declines. Although our study focuses on the three extant orangutan species of Sumatra and Borneo, our findings have broad application for evidence-based conservation science and practice worldwide.
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Affiliation(s)
- Truly Santika
- Natural Resources Institute (NRI), University of Greenwich, Chatham Maritime ME4 4TB, UK
| | - Julie Sherman
- Wildlife Impact, P.O. Box 31062, Portland, OR 97231, USA
| | - Maria Voigt
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury, Kent CT2 7NR, UK
| | - Marc Ancrenaz
- HUTAN-KOCP, P.O. Box 17793, 88874 Kota Kinabalu, Sabah, Malaysia; Borneo Futures, 8th Floor, PGGMB Building, Jalan Kianggeh, Bandar Seri Begawan BS8111, Brunei Darussalam
| | - Serge A Wich
- School of Biological and Environmental Sciences, Tom Reilly Building, Byrom Street, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Kerrie A Wilson
- Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Hugh Possingham
- Centre for Biodiversity and Conservation Science, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Emily Massingham
- Centre for Biodiversity and Conservation Science, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Dave J I Seaman
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury, Kent CT2 7NR, UK
| | - Alison M Ashbury
- Department of Biology - Fach 618, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany; Department for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Bücklestraße 4, 78464 Konstanz, Germany; Department of Anthropology, Winterthurerstrasse 190, University of Zurich, 8057 Zurich, Switzerland
| | - Taufiq S Azvi
- Universitas Nahdlatul Ulama Sumatera Utara, Jl. Gaperta Ujung No.2, Tj. Gusta, Kec. Medan Helvetia, Kota Medan, Sumatera Utara 20125, Indonesia; Pesona Tropis Alam Indonesia (PETAI), Komplek Tasbi 2, Jl. Ring Road Blk. V No.21, A M P L A S, Kec. Medan Amplas, Kota Medan, Sumatera Utara 20122, Indonesia
| | - Graham L Banes
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Southwest Commuter Path, Madison, WI 53715, USA
| | - Elizabeth J Barrow
- Gunung Palung Orangutan Conservation Program, P.O. Box G, 1661 Massachusetts Avenue, Lexington, MA 02420-2020, USA
| | - David F R P Burslem
- School of Biological Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen, Aberdeenshire AB24 2TZ, Scotland, UK
| | - Robert A Delgado
- U.S. National Science Foundation, 2415 Eisenhower Avenue, Alexandria, VA, USA
| | - Andi Erman
- GFA/KWF, Kapuas Hulu Program, Pontianak, West Kalimantan, Indonesia
| | - Gabriella Fredriksson
- Vocabolo Ca' di Bracco, Via Migianella 381, Loc Molino Vitelli, 06019 Umbertide, PG, Italia
| | - Benoit Goossens
- Danau Girang Field Centre, c/o Sabah Wildlife Department, Wisma MUIS, Block B 5th Floor, 88100 Kota Kinabalu, Sabah, Malaysia; Organisms and Environment Division, Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3 AX, UK; Sustainable Places Research Institute, Cardiff University, 33 Park Place, Cardiff CF10 3BA, UK
| | - Max Houghton
- Research Centre in Evolutionary Anthropology, and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, UK
| | - Tito P Indrawan
- Forum Konservasi Orangutan Kalimantan Barat, Lab 515 Building, 3rd Floor Jl. Salihara No. 41A, Pasar Minggu, Jakarta 12520, Indonesia
| | - Ricko L Jaya
- Orangutan Information Centre, Bunga Sedap Malam XVIII C No. 10, Medan Selayang, Medan, North Sumatra 20131, Indonesia
| | - Tomoko Kanamori
- Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan
| | - Cheryl D Knott
- Gunung Palung Orangutan Conservation Program, P.O. Box G, 1661 Massachusetts Avenue, Lexington, MA 02420-2020, USA; Department of Anthropology, Boston University, 232 Bay State Road, Boston, MA 02215, USA; Department of Biology, Boston University, 5 Cummington Mall, Room 101, Boston, MA 02215, USA
| | - Ashley Leiman
- Orangutan Foundation, 7 Kent Terrace, London NW1 4RP, UK
| | - Darmawan Liswanto
- Yayasan Titian Lestari, Jl. Komp. Alex Griya Permai I, Bangka Belitung Darat, Kec. Pontianak Tenggara, Kota Pontianak, Kalimantan Barat 78124, Indonesia; Yayasan SINTAS, Jl. Merdeka Barat No.665, Mariana, Kec. Pontianak Kota, Kota Pontianak, Kalimantan Barat 78243, Indonesia
| | - Martin Mach
- Bumitama, Jl. Melawai Raya No.10, RT.3/RW.1, Melawai, Kec. Kby. Baru, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12160, Indonesia
| | - Andrew J Marshall
- University of Michigan, Department of Anthropology, Department of Ecology and Evolutionary Biology, Program in the Environment, School for Environment and Sustainability, Ann Arbor, MI 48109, USA
| | - Julien G A Martin
- Biology Department, University of Ottawa, Gendron Hall, Room 160, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
| | - Lelyana Midora
- Wildlife Impact, P.O. Box 31062, Portland, OR 97231, USA
| | - Adam Miller
- Planet Indonesia, Webster Groves, MO 63119, USA
| | - Sol Milne
- School of Biological Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen, Aberdeenshire AB24 2TZ, Scotland, UK
| | - Courtney Morgans
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury, Kent CT2 7NR, UK
| | - Nardi Nardiyono
- Austindo Nusantara Jaya, Menara BTPN, 40 Floor, Jl. Dr. Ide Anak Agung Gde Agung, Kav. 5.5-5.6, Kawasan Mega Kuningan, Jakarta 12950, Indonesia
| | - Dyah Perwitasari-Farajallah
- Department of Biology, Gedung Biologi, Jalan Agatis Kampus IPB Dramaga, Bogor 16680, Indonesia; Primate Research Center, IPB University, Jl. Lodaya II/5, Bogor 16151, Indonesia
| | - Dolly Priatna
- Graduate School of Environmental Management, Pakuan University, Jl. Pakuan, RT.02/RW.06, Tegallega, Kecamatan Bogor Tengah, Kota Bogor, Jawa Barat 16129, Indonesia; Belantara Foundation, Dimo Space, Jl. Timor No.6, RT.9/RW.4, Gondangdia, Kec. Menteng, Kota Jakarta Pusat, Daerah Khusus Ibukota Jakarta 10350, Indonesia
| | - Robert Risch
- Rhino and Forest Fund, Auf dem Stein 2, 77694 Kehl, Germany
| | - Galuh M Riyadi
- Universitas Tanjungpura, Jl. Prof. Dr. H Jl. Profesor Dokter H. Hadari Nawawi, Bansir Laut, Kec. Pontianak Tenggara, Kota Pontianak, Kalimantan Barat 78124, Indonesia; Malaysian Environmental Consultants, 82 Jalan Ampang Hilir, 55000 Kuala Lumpur, Malaysia
| | - Anne Russon
- Glendon College of York University, 2275 Bayview Avenue, Toronto, ON M4N 3M6, Canada
| | - Juhardi Sembiring
- Universitas Nahdlatul Ulama Sumatera Utara, Jl. Gaperta Ujung No.2, Tj. Gusta, Kec. Medan Helvetia, Kota Medan, Sumatera Utara 20125, Indonesia
| | - Endro Setiawan
- Gunung Palung National Park Office, Padu Banjar, Kec. Simpang Hilir, Kabupaten Ketapang, Kalimantan Barat 78857, Indonesia
| | - Mohammad Sidiq
- Universitas Tanjungpura, Jl. Prof. Dr. H Jl. Profesor Dokter H. Hadari Nawawi, Bansir Laut, Kec. Pontianak Tenggara, Kota Pontianak, Kalimantan Barat 78124, Indonesia
| | - Donna Simon
- WWF-Malaysia, Suite 1-6-W11 6th Floor, CPS Tower, Centre Point Complex No. 1, Lorong Centre Point, Pusat Bandar, 88000 Kota Kinabalu, Sabah, Malaysia
| | - Stephanie Spehar
- Sustainability Institute for Regional Transformations, 4483 Sage Hall, 835 High Avenue, Oshkosh, WI 54901, USA
| | - Matthew J Struebig
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury, Kent CT2 7NR, UK
| | - Ibrahim Sumardi
- Gunung Palung National Park Office, Padu Banjar, Kec. Simpang Hilir, Kabupaten Ketapang, Kalimantan Barat 78857, Indonesia
| | - Albertus Tjiu
- World Wide Fund for Nature-Indonesia (Yayasan WWF Indonesia), WWF Indonesia Gedung Graha Simatupang, Tower 2, Unit C, 7 Floor, Jl. Letjen TB. Simatupang Kav. 38, Jakarta Selatan 12540, Indonesia
| | - Rizki Wahyudi
- Gunung Palung National Park Office, Padu Banjar, Kec. Simpang Hilir, Kabupaten Ketapang, Kalimantan Barat 78857, Indonesia
| | - Achmad Yanuar
- Graduate School, Department of Biology, Universitas Nasional, Jl. Sawo Manila, Pejaten Ps., South Jakarta 12520, Indonesia
| | - Erik Meijaard
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury, Kent CT2 7NR, UK; Borneo Futures, 8th Floor, PGGMB Building, Jalan Kianggeh, Bandar Seri Begawan BS8111, Brunei Darussalam; Department of Ecology, Faculty of Science, Charles University, Viničná 7, Prague 2, 12844 Prague, Czech Republic.
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8
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Tuia D, Kellenberger B, Beery S, Costelloe BR, Zuffi S, Risse B, Mathis A, Mathis MW, van Langevelde F, Burghardt T, Kays R, Klinck H, Wikelski M, Couzin ID, van Horn G, Crofoot MC, Stewart CV, Berger-Wolf T. Perspectives in machine learning for wildlife conservation. Nat Commun 2022; 13:792. [PMID: 35140206 PMCID: PMC8828720 DOI: 10.1038/s41467-022-27980-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 12/08/2021] [Indexed: 11/08/2022] Open
Abstract
Inexpensive and accessible sensors are accelerating data acquisition in animal ecology. These technologies hold great potential for large-scale ecological understanding, but are limited by current processing approaches which inefficiently distill data into relevant information. We argue that animal ecologists can capitalize on large datasets generated by modern sensors by combining machine learning approaches with domain knowledge. Incorporating machine learning into ecological workflows could improve inputs for ecological models and lead to integrated hybrid modeling tools. This approach will require close interdisciplinary collaboration to ensure the quality of novel approaches and train a new generation of data scientists in ecology and conservation.
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Affiliation(s)
- Devis Tuia
- School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Benjamin Kellenberger
- School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Sara Beery
- Department of Computing and Mathematical Sciences, California Institute of Technology (Caltech), Pasadena, CA, USA
| | - Blair R Costelloe
- Max Planck Institute of Animal Behavior, Radolfzell, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Silvia Zuffi
- Institute for Applied Mathematics and Information Technologies, IMATI-CNR, Pavia, Italy
| | - Benjamin Risse
- Computer Science Department, University of Münster, Münster, Germany
| | - Alexander Mathis
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Mackenzie W Mathis
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | | | - Tilo Burghardt
- Computer Science Department, University of Bristol, Bristol, UK
| | - Roland Kays
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA
- North Carolina Museum of Natural Sciences, Raleigh, NC, USA
| | - Holger Klinck
- Cornell Lab of Ornithology, Cornell University, Ithaca, NY, USA
| | - Martin Wikelski
- Max Planck Institute of Animal Behavior, Radolfzell, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
| | - Iain D Couzin
- Max Planck Institute of Animal Behavior, Radolfzell, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Grant van Horn
- Cornell Lab of Ornithology, Cornell University, Ithaca, NY, USA
| | - Margaret C Crofoot
- Max Planck Institute of Animal Behavior, Radolfzell, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Charles V Stewart
- Department of Computer Science, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Tanya Berger-Wolf
- Translational Data Analytics Institute, The Ohio State University, Columbus, OH, USA
- Departments of Computer Science and Engineering; Electrical and Computer Engineering; Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH, USA
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9
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Galea B, Humle T. Identifying and mitigating the impacts on primates of transportation and service corridors. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2022; 36:e13836. [PMID: 34490657 DOI: 10.1111/cobi.13836] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 08/15/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Most primate populations are declining; 60% of species face extinction. The expansion of transportation and service corridors (T&S) (i.e., roads and railways and utility and service lines) poses a significant yet underappreciated threat. With the development of T&S corridors predicted to increase across primates' ranges, it is necessary to understand the current extent of its impacts on primates, the available options to mitigate these effectively, and recognize research and knowledge gaps. By employing a systematic search approach to identify literature that described the relationship between primates and T&S corridors, we extracted information from 327 studies published between 1980 and 2020. Our results revealed that 218 species and subspecies across 62 genera are affected, significantly more than the 92 listed by the IUCN Red List of Threatened Species. The majority of studies took place in Asia (45%), followed by mainland Africa (31%), the Neotropics (22%), and Madagascar (2%). Brazil, Indonesia, Equatorial Guinea, Vietnam, and Madagascar contained the greatest number of affected primate species. Asia featured the highest number of species affected by roads, electrical transmission lines, and pipelines and the only studies addressing the impact of rail and aerial tramways on primates. The impact of seismic lines only emerged in the literature from Africa and the Neotropics. Impacts are diverse and multifaceted, for example, animal-vehicle collisions, electrocutions, habitat loss and fragmentation, impeded movement and genetic exchange, behavioral changes, exposure to pollution, and mortality associated with hunting. Although several mitigation measures were recommended, only 41% of studies focused on their implementation, whereas only 29% evaluated their effectiveness. Finally, there was a clear bias in the species and regions benefiting from research on this topic. We recommend that government and conservation bodies recognize T&S corridors as a serious and mounting threat to primates and that further research in this area is encouraged.
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Affiliation(s)
- Benjamin Galea
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, UK
| | - Tatyana Humle
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, UK
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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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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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12
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Palmer A, Sommer V, Msindai JN. Hybrid apes in the Anthropocene: Burden or asset for conservation? PEOPLE AND NATURE 2021; 3:573-586. [PMID: 34805779 PMCID: PMC8581989 DOI: 10.1002/pan3.10214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/01/2021] [Indexed: 11/08/2022] Open
Abstract
Conservationists often view hybrid animals as problematic, at least if anthropogenic influence caused the intermixing to occur. However, critics propose that humans should respect non-human autonomy, reject and accept the creatures they have helped to create.Based on two case studies of our own ethological, genetic and ethnographic research about chimpanzee and orangutan subspecies hybrids, we assess what, if anything, should be done about such animals. We consider problems posed by cross-bred apes relating to: (a) Breeding-Do hybrids really experience reduced reproductive success? How are population-level concerns and welfare of individual animals balanced in conservation breeding? (b) Essentialism-Are anti-hybrid arguments based on essentialist or purist thinking? Does essentialism vary by conservation context? (c) Pragmatism-How do socio-economic circumstances influence whether hybrids are embraced or ignored? Does the erosion of 'untouched nature' render hybrids more important?We show that answers to these questions are complex and context-specific, and that therefore decisions should be made on a case-by-case basis. For example, we find that anti-hybrid arguments are essentialist in some cases (e.g. ape management in zoos) but not in others (e.g. ape reintroduction). Thus, rather than present recommendations, we conclude by posing nine questions that conservationists should ask themselves when making decisions about taxonomic hybrids. A free Plain Language Summary can be found within the Supporting Information of this article.
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Affiliation(s)
- Alexandra Palmer
- School of Geography and the EnvironmentUniversity of OxfordOxfordUK
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13
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Unwin S, Commitante R, Moss A, Bridges E, Farmer KH, Jaya RL, Saraswati YS, Nente C, Soedarmanto I, Sulistyo F, Sugnaseelan S. Evaluating the contribution of a wildlife health capacity building program on orangutan conservation. Am J Primatol 2021; 84:e23273. [PMID: 34018623 DOI: 10.1002/ajp.23273] [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: 12/18/2020] [Revised: 04/01/2021] [Accepted: 05/06/2021] [Indexed: 11/12/2022]
Abstract
One Health is increasingly being used as a tool in ecosystem protection. The Orangutan Veterinary Advisory Group (OVAG) is working to address One Health concerns in Pongo spp. (orangutan) welfare and conservation. Orangutans are vital contributors to the ecosystem health of their range areas. Strengthening national capacity is crucial to make a lasting difference in the currently bleak outlook for orangutan species survival. OVAG is a capacity strengthening and expertise network that brings together all those working with orangutans, in- and ex-situ, to share knowledge, skills, and to collectively learn. Using the One Health paradigm embedded to enhance professional development, the OVAG network is successfully supporting conservation outcomes and impact. As part of our adaptive management approach, and to assess individual and organizational change attributable to the capacity strengthening work of OVAG, we evaluated technical skill test data, program satisfaction data, and asked participants to complete a self-reflective survey. This pilot study of our work demonstrates statistically significant improvements in conservation medicine (t = 5.481, p < 0.0001) and wildlife clinical skills knowledge (t = 3.923, p < 0.001) for those in the OVAG program. Most consider OVAG participation to be either critical or very useful in their conservation medicine decision-making process, with a perceived positive impact on their skills at handling multiple situations. Additionally, participant feedback shows a sense of being able to drive positive change locally and nationally (within their own countries) as a consequence of OVAG participation. The authors hope the OVAG model including its associated capacity support mechanisms and pedagogical approaches can be used as a template for other One Health efforts.
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Affiliation(s)
- Steve Unwin
- OVAG/School of Biosciences, University of Birmingham, Birmingham, UK
| | - Raffaella Commitante
- OVAG/Orangutan Conservancy, California State University Fullerton Anthropology, Fullerton, California, USA
| | | | | | | | - Ricko Laino Jaya
- OVAG/School of Biosciences, University of Birmingham, Birmingham, UK
| | | | - Citrakasih Nente
- OVAG/Sumatran Orangutan Conservation Programme, Medan, Indonesia
| | | | - Fransiska Sulistyo
- OVAG/Borneo Orangutan Survival Foundation (until 2018), Bogor, Indonesia
| | - Sumita Sugnaseelan
- OVAG/Dept. Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Malaysia
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Learning to Be an Orangutan-Implications of Life History for Orangutan Rehabilitation. Animals (Basel) 2021; 11:ani11030767. [PMID: 33802019 PMCID: PMC8001071 DOI: 10.3390/ani11030767] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/28/2021] [Accepted: 03/05/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Like humans, great apes have extended childhoods during which they depend on maternal pedagogy. To help rescued orphans recover from maternal loss our rehabilitation programme is modelled on the natural infant development of orangutans. Orphaned apes cannot be released back into freedom before they have learned the skills necessary to survive alone. To prevent suffering after release we documented the development of survival skills during the rehabilitation process. Seven orangutan orphans aged 1.5–9 years were observed over 18 months in their forest school, immersed in a natural forest environment with human surrogate mothers and other orphans. Social interactions deviated from wild mother-reared immatures: Infant orphans spent more time playing with peers, rested less, and were far from their human surrogate mothers earlier and often than wild immatures are from their biological mothers. Around weaning age, 4- to 7-year-old orphans took up a typical orangutan life-style: they interacted less with human surrogate mothers and peers, stayed high in the trees and slept in nests in the forest. Their time budgets resembled those of wild adults. We conclude that it is not only ethical but also possible to assess survival competences of rehabilitant orphans before release and choose release candidates accordingly. Abstract Orangutans depend on social learning for the acquisition of survival skills. The development of skills is not usually assessed in rescued orphans’ pre-release. We collected data of seven orphans over an 18-months-period to monitor the progress of ontogenetic changes. The orphans, 1.5–9 years old, were immersed in a natural forest environment with human surrogate mothers and other orphans. Social interactions deviated significantly from those of wild mother-reared immatures. Infants spent more time playing socially with peers, at the expense of resting and solitary play. Infants were also more often and at an earlier age distant from their human surrogate mothers than wild immatures are from their biological mothers. We found important changes towards an orangutan-typical lifestyle in 4- to 7-year-old orphans, corresponding to the weaning age in maternally reared immatures. The older orphans spent less time interacting with human surrogate mothers or peers, started to use the canopy more than lower forest strata and began to sleep in nests in the forest. Their time budgets resembled those of wild adults. In conclusion, juvenile orphans can develop capacities that qualify them as candidates for release back into natural habitat when protected from humanising influences and immersed in a species-typical environment.
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The historical range and drivers of decline of the Tapanuli orangutan. PLoS One 2021; 16:e0238087. [PMID: 33395430 PMCID: PMC7781382 DOI: 10.1371/journal.pone.0238087] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/20/2020] [Indexed: 11/19/2022] Open
Abstract
The Tapanuli Orangutan (Pongo tapanuliensis) is the most threatened great ape species in the world. It is restricted to an area of about 1,000 km2 of upland forest where fewer than 800 animals survive in three declining subpopulations. Through a historical ecology approach involving analysis of newspaper, journals, books and museum records from the early 1800s to 2009, we demonstrate that historically Pongo tapanuliensis inhabited a much larger area, and occurred across a much wider range of habitat types and at lower elevations than now. Its current Extent of Occurrence is 2.5% and 5.0% of the historical range in the 1890s and 1940s respectively. A combination of historical fragmentation of forest habitats, mostly for small-scale agriculture, and unsustainable hunting likely drove various populations to the south, east and west of the current population to extinction. This happened prior to the industrial-scale forest conversion that started in the 1970s. Our findings indicate how sensitive P. tapanuliensis is to the combined effects of habitat fragmentation and unsustainable take-off rates. Saving this species will require prevention of any further fragmentation and killings or other removal of animals from the remaining population. Without concerted action to achieve this, the remaining populations of P. tapanuliensis are doomed to become extinct within several orangutan generations.
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16
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Junker J, Petrovan SO, Arroyo-RodrÍguez V, Boonratana R, Byler D, Chapman CA, Chetry D, Cheyne SM, Cornejo FM, CortÉs-Ortiz L, Cowlishaw G, Christie AP, Crockford C, Torre SDL, De Melo FR, Fan P, Grueter CC, GuzmÁn-Caro DC, Heymann EW, Herbinger I, Hoang MD, Horwich RH, Humle T, Ikemeh RA, Imong IS, Jerusalinsky L, Johnson SE, Kappeler PM, Kierulff MCM, KonÉ I, Kormos R, Le KQ, Li B, Marshall AJ, Meijaard E, Mittermeier RA, Muroyama Y, Neugebauer E, Orth L, Palacios E, Papworth SK, Plumptre AJ, Rawson BM, Refisch J, Ratsimbazafy J, Roos C, Setchell JM, Smith RK, Sop T, Schwitzer C, Slater K, Strum SC, Sutherland WJ, Talebi M, Wallis J, Wich S, Williamson EA, Wittig RM, KÜhl HS. A Severe Lack of Evidence Limits Effective Conservation of the World's Primates. Bioscience 2020; 70:794-803. [PMID: 32973409 PMCID: PMC7498340 DOI: 10.1093/biosci/biaa082] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Threats to biodiversity are well documented. However, to effectively conserve species and their habitats, we need to know which conservation interventions do (or do not) work. Evidence-based conservation evaluates interventions within a scientific framework. The Conservation Evidence project has summarized thousands of studies testing conservation interventions and compiled these as synopses for various habitats and taxa. In the present article, we analyzed the interventions assessed in the primate synopsis and compared these with other taxa. We found that despite intensive efforts to study primates and the extensive threats they face, less than 1% of primate studies evaluated conservation effectiveness. The studies often lacked quantitative data, failed to undertake postimplementation monitoring of populations or individuals, or implemented several interventions at once. Furthermore, the studies were biased toward specific taxa, geographic regions, and interventions. We describe barriers for testing primate conservation interventions and propose actions to improve the conservation evidence base to protect this endangered and globally important taxon.
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Affiliation(s)
- Jessica Junker
- German Centre for Integrative Biodiversity Research, Leipzig, Germany and with the Max Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, in Leipzig, Germany
| | - Silviu O Petrovan
- Conservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom
| | - Victor Arroyo-RodrÍguez
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Mexico
| | | | | | - Colin A Chapman
- Department of Anthropology, McGill University, Montreal, Quebec, Canada; with the School of Life Sciences, University of KwaZulu-Natal, Scottsville, Pietermaritzburg, South Africa; and with the Shaanxi Key Laboratory for Animal Conservation, at Northwest University, in Xi'an, China
| | | | - Susan M Cheyne
- Borneo Nature Foundation, Palangka Raya, Central Kalimantan, Indonesia, and with the Department of Social Sciences, Oxford Brookes University, Oxford, United Kingdom
| | | | - Liliana CortÉs-Ortiz
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan
| | - Guy Cowlishaw
- Institute of Zoology, Zoological Society of London, London, in the United Kingdom
| | - Alec P Christie
- Conservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom
| | - Catherine Crockford
- Tai Chimpanzee Project, Centre Suisse des Recherche Scientifique, Abidjan, Cote d'Ivoire
| | - Stella De La Torre
- Universidad San Francisco de Quito's Colegio de Ciencias Biológicas y Ambientales in Quito, Ecuador
| | - Fabiano R De Melo
- Department of Engenharia Florestal, Federal University of Viçosa, Viçosa, Brazil
| | - P Fan
- School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Cyril C Grueter
- School of Human Sciences and with the School of Biological Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | | | - Eckhard W Heymann
- Deutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Germany
| | | | - Minh D Hoang
- Southern Institute of Ecology, Hochiminh City, Vietnam
| | | | - Tatyana Humle
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Kent, United Kingdom
| | - Rachel A Ikemeh
- SW/Niger Delta Forest Project, part of the Foundation for Sustainability of Ecosystem, Wildlife, and Climate, Abuja, Nigeria
| | | | - Leandro Jerusalinsky
- Centro Nacional de Pesquisa e Conservação de Primatas Brasileiros, in the Instituto Chico Mendes de Conservação da Biodiversidade. In João Pessoa, Brazil
| | - Steig E Johnson
- Department of Anthropology and Archaeology, University of Calgary, Calgary, Alberta, Canada
| | - Peter M Kappeler
- Deutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Germany, and with the Department of Sociobiology/Anthropology, Faculty of Biology and Psychology, at Georg-August Universität, in Göttingen, Germany
| | - Maria CecÍlia M Kierulff
- Instituto Nacional da Mata Atlântica, in Espírito Santo, Brazil, and with the Instituto Pri-Matas, Minas Gerais, Brazil
| | - Inza KonÉ
- Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire. Rebecca Kormos is affiliated with the Department of Integrative Biology, University of California, Berkeley
| | - Rebecca Kormos
- German Centre for Integrative Biodiversity Research, Leipzig, Germany and with the Max Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, in Leipzig, Germany
| | - Khac Q Le
- Freelance wildlife consultant, Hanoi, Vietnam
| | - Baoguo Li
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China
| | - Andrew J Marshall
- Department of Anthropology and the Department of Ecology and Evolutionary Biology in the Program in the Environment and the School of Environment and Sustainability, Universit of Michigan in Ann Arbor, Michigan
| | - Erik Meijaard
- Center of Excellence for Environmental Decisions, University of Queensland, Brisbane, Queensland, Australia, and with Borneo Futures, Bandar Seri Begawan, Brunei
| | | | - Yasuyuki Muroyama
- Natural Science Laboratory, Faculty of Business Administration, Toyo University, Tokyo, Japan
| | - Eleonora Neugebauer
- Universität Leipzig, Dekanat der Fakultät für Lebenswissenschaften, Leipzig, Germany
| | - Lisa Orth
- Independent researcher, Leipzig, Germany
| | | | | | - Andrew J Plumptre
- Department of Anthropology and the Department of Ecology and Evolutionary Biology in the Program in the Environment and the School of Environment and Sustainability, Universit of Michigan in Ann Arbor, Michigan
| | - Ben M Rawson
- World Wide Fund for Wildlife Vietnam, Hanoi, Vietnam
| | - Johannes Refisch
- Great Apes Survival Partnership, United Nations Environment Programme, Nairobi, Kenya
| | - Jonah Ratsimbazafy
- Groupe d'étude et de recherche sur les primates, Antananarivo, Madagascar
| | - Christian Roos
- Deutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Germany
| | - Joanna M Setchell
- Department of Anthropology, Durham University, Durham, United Kingdom
| | - Rebecca K Smith
- Conservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom
| | - Tene Sop
- Max Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, Leipzig, Germany
| | | | - Kerry Slater
- Operation Wallacea, Lincolnshire, United Kingdom
| | - Shirley C Strum
- University of California San Diego, La Jolla, California, and with the Uaso Ngiro Baboon Project, Nairobi, Kenya
| | - William J Sutherland
- Conservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom
| | - MaurÍcio Talebi
- Departamento de Cíências Ambientais and the Programa Análise Ambiental Integrada, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - Janette Wallis
- Department of Environmental Studies, University of Oklahoma, Norman, Oklahoma
| | - Serge Wich
- School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom
| | | | - Roman M Wittig
- Tai Chimpanzee Project, Centre Suisse des Recherche Scientifique, Abidjan, Cote d'Ivoire
| | - Hjalmar S KÜhl
- German Centre for Integrative Biodiversity Research, Leipzig, Germany and with the Max Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, in Leipzig, Germany
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