Evidence map›Paper›PMID 32973409›Full record

ArticleBioscience2020

A Severe Lack of Evidence Limits Effective Conservation of the World's Primates.

Jessica Junker, Silviu O Petrovan, Victor Arroyo-RodrÍguez, Ramesh Boonratana, Dirck Byler, Colin A Chapman, Dilip Chetry, Susan M Cheyne, Fanny M Cornejo, Liliana CortÉs-Ortiz and 49 more

Erratum issuedAbstract read
In one paragraph

Article in Bioscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Role of funders in embedding tests in conservation practice.Conservation biology : the journal of the Society for Conservation Biology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Exploring gaps, biases, and research priorities in the evidence for reptile conservation actions.Conservation biology : the journal of the Society for Conservation Biology · 2025
    Article
  8. Article
  9. Traditional ecological knowledge for great ape conservation in Gabon.Journal of ethnobiology and ethnomedicine · 2025
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Reflections on connections.Primates; journal of primatology · 2023
    Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

59 authors.

Jessica JunkerGerman 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 PetrovanConservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom.
Victor Arroyo-RodrÍguezInstituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Mexico.
Ramesh BoonratanaMahidol University International College, Salaya, Thailand.
Dirck BylerGlobal Wildlife Conservation, Austin, Texas.
Colin A ChapmanDepartment 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.
Dilip ChetryGibbon Conservation Centre, Assam, India.
Susan M CheyneBorneo Nature Foundation, Palangka Raya, Central Kalimantan, Indonesia, and with the Department of Social Sciences, Oxford Brookes University, Oxford, United Kingdom.
Fanny M CornejoStony Brook University, Stony Brook, New York.
Liliana CortÉs-OrtizDepartment of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan.
Guy CowlishawInstitute of Zoology, Zoological Society of London, London, in the United Kingdom.
Alec P ChristieConservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom.
Catherine CrockfordTai Chimpanzee Project, Centre Suisse des Recherche Scientifique, Abidjan, Cote d'Ivoire.
Stella De La TorreUniversidad San Francisco de Quito's Colegio de Ciencias Biológicas y Ambientales in Quito, Ecuador.
Fabiano R De MeloDepartment of Engenharia Florestal, Federal University of Viçosa, Viçosa, Brazil.
P FanSchool of Life Sciences, Sun Yat-Sen University, Guangzhou, China.
Cyril C GrueterSchool of Human Sciences and with the School of Biological Sciences, University of Western Australia, Crawley, Western Australia, Australia.
Diana C GuzmÁn-CaroAsociación Primatológica Colombiana, Bogotá, Colombia.
Eckhard W HeymannDeutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Germany.
Ilka HerbingerWorld Wide Fund for Wildlife Germany, Berlin, Germany.
Minh D HoangSouthern Institute of Ecology, Hochiminh City, Vietnam.
Robert H HorwichCommunity Baboon Sanctuary, Belize.
Tatyana HumleDurrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Kent, United Kingdom.
Rachel A IkemehSW/Niger Delta Forest Project, part of the Foundation for Sustainability of Ecosystem, Wildlife, and Climate, Abuja, Nigeria.
Inaoyom S ImongWildlife Conservation Society Nigeria, Calabar, Nigeria.
Leandro JerusalinskyCentro Nacional de Pesquisa e Conservação de Primatas Brasileiros, in the Instituto Chico Mendes de Conservação da Biodiversidade. In João Pessoa, Brazil.
Steig E JohnsonDepartment of Anthropology and Archaeology, University of Calgary, Calgary, Alberta, Canada.
Peter M KappelerDeutsches 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 KierulffInstituto Nacional da Mata Atlântica, in Espírito Santo, Brazil, and with the Instituto Pri-Matas, Minas Gerais, Brazil.
Inza KonÉCentre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire. Rebecca Kormos is affiliated with the Department of Integrative Biology, University of California, Berkeley.
Rebecca KormosGerman 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 LeFreelance wildlife consultant, Hanoi, Vietnam.
Baoguo LiShaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, China.
Andrew J MarshallDepartment 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 MeijaardCenter of Excellence for Environmental Decisions, University of Queensland, Brisbane, Queensland, Australia, and with Borneo Futures, Bandar Seri Begawan, Brunei.
Russel A MittermeierGlobal Wildlife Conservation, Austin, Texas.
Yasuyuki MuroyamaNatural Science Laboratory, Faculty of Business Administration, Toyo University, Tokyo, Japan.
Eleonora NeugebauerUniversität Leipzig, Dekanat der Fakultät für Lebenswissenschaften, Leipzig, Germany.
Lisa OrthIndependent researcher, Leipzig, Germany.
Erwin PalaciosConservación Internacional, Colombia, Bogotá.
Sarah K PapworthRoyal Holloway University of London, Egham, United Kingdom.
Andrew J PlumptreDepartment 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 RawsonWorld Wide Fund for Wildlife Vietnam, Hanoi, Vietnam.
Johannes RefischGreat Apes Survival Partnership, United Nations Environment Programme, Nairobi, Kenya.
Jonah RatsimbazafyGroupe d'étude et de recherche sur les primates, Antananarivo, Madagascar.
Christian RoosDeutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Germany.
Joanna M SetchellDepartment of Anthropology, Durham University, Durham, United Kingdom.
Rebecca K SmithConservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom.
Tene SopMax Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, Leipzig, Germany.
Christoph SchwitzerBristol Zoological Society, Bristol Zoo Gardens, Bristol, United Kingdom.
Kerry SlaterOperation Wallacea, Lincolnshire, United Kingdom.
Shirley C StrumUniversity of California San Diego, La Jolla, California, and with the Uaso Ngiro Baboon Project, Nairobi, Kenya.
William J SutherlandConservation Science Group, Department of Zoology, University of Cambridge, Cambridge, United Kingdom.
MaurÍcio TalebiDepartamento de Cíências Ambientais and the Programa Análise Ambiental Integrada, Universidade Federal de São Paulo, Sao Paulo, Brazil.
Janette WallisDepartment of Environmental Studies, University of Oklahoma, Norman, Oklahoma.
Serge WichSchool of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom.
Elizabeth A WilliamsonFaculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom.
Roman M WittigTai Chimpanzee Project, Centre Suisse des Recherche Scientifique, Abidjan, Cote d'Ivoire.
Hjalmar S KÜhlGerman Centre for Integrative Biodiversity Research, Leipzig, Germany and with the Max Planck Institute for Evolutionary Anthropology, formerly the Department of Primatology, in Leipzig, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

conservation interventionseffectivenessevidence basedIUCN SSC Primate Specialist Group

Identifiers

PMID32973409
PMCPMC7498340

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.