Haken, J. Transnational Crime in the Developing World (Global Financial Integrity, 2011).
Patel, N. G. et al. Quantitative methods of identifying the key nodes in the illegal wildlife trade network. Proc. Natl Acad. Sci. USA 112, 7948–7953 (2015).
Bager Olsen, M. T. et al. Thirty-six years of legal and illegal wildlife trade entering the USA. Oryx https://doi.org/10.1017/S0030605319000541 (2019).
Tittensor, D. P. et al. Evaluating the relationships between the legal and illegal international wildlife trades. Conserv. Lett. https://doi.org/10.1111/conl.12724 (2020).
Harfoot, M. et al. Unveiling the patterns and trends in 40 years of global trade in CITES-listed wildlife. Biol. Conserv. 223, 47–57 (2018).
Scheffers, B. R., Oliveira, B. F., Lamb, I. & Edwards, D. P. Global wildlife trade across the tree of life. Science 76, 71–76 (2019).
Maxwell, S. L., Fuller, R. A., Brooks, T. M. & Watson, J. E. M. Biodiversity: the ravages of guns, nets and bulldozers. Nature 536, 143–145 (2016).
Nielsen, M. R., Meilby, H., Smith-Hall, C., Pouliot, M. & Treue, T. The importance of wild meat in the global south. Ecol. Econ. 146, 696–705 (2018).
’t Sas-Rolfes, M., Challender, D. W. S., Hinsley, A., Veríssimo, D. & Milner-Gulland, E. J. Illegal wildlife trade: scale, processes, and governance. Annu. Rev. Environ. Resour. 44, 201–228 (2019).
Cooney, R. et al. From poachers to protectors: engaging local communities in solutions to illegal wildlife trade. Conserv. Lett. 10, 367–374 (2017).
Bodmer, R. E. & Lozano, E. P. Rural development and sustainable wildlife use in Peru. Conserv. Biol. 15, 1163–1170 (2001).
McClenachan, L., Cooper, A. B. & Dulvy, N. K. Rethinking trade-driven extinction risk in marine and terrestrial megafauna. Curr. Biol. 26, 1640–1646 (2016).
Wittemyer, G. et al. Illegal killing for ivory drives global decline in African elephants. Proc. Natl Acad. Sci. USA 111, 13117–13121 (2014).
Brook, S., Van Coeverden De Groot, P. J., Mahood, S. & Long, B. Extinction of the Javan Rhinoceros (Rhinoceros sondaicus) from Vietnam (WWF, 2011).
Heinrich, S. et al. Where did all the pangolins go? International CITES trade in pangolin species. Glob. Ecol. Conserv. 8, 241–253 (2016).
Cowlishaw, G., Mendelson, S. & Rowcliffe, J. M. Evidence for post-depletion sustainability in a mature bushmeat market. J. Appl. Ecol. 42, 460–468 (2005).
Hutton, J. M. & Webb, G. in The Trade in Wildlife: Regulation for Conservation (ed. Oldfield, S.) Ch. 11 (Earthscan, 2003).
Harris, J. B. C. et al. Using market data and expert opinion to identify overexploited species in the wild bird trade. Biol. Conserv. 187, 51–60 (2015).
Milner-Gulland, E. J. & Clayton, L. The trade in babirusas and wild pigs in North Sulawesi, Indonesia. Ecol. Econ. 42, 165–183 (2002).
Thuiller, W. et al. Vulnerability of African mammals to anthropogenic climate change under conservative land transformation assumptions. Glob. Change Biol. 12, 424–440 (2006).
Benítez-López, A. et al. The impact of hunting on tropical mammal and bird populations. Science 356, 180–183 (2017).
Gibson, L. et al. Primary forests are irreplaceable for sustaining tropical biodiversity. Nature 478, 378–381 (2011).
CITES Trade Statistics Derived from the CITES Trade Database (CITES, 2020).
Phelps, J. & Webb, E. L. ‘Invisible’ wildlife trades: Southeast Asia’s undocumented illegal trade in wild ornamental plants. Biol. Conserv. 186, 296–305 (2015).
Davies, G., Schulte-Herbrüggen, B., Kümpel, N. F. & Mendelson, S. Hunting and trapping in Gola Forests, south-eastern Sierra Leone: bushmeat from farm, fallow and forest. Bushmeat Livelihoods Wildl. Manage. Poverty Reduct. https://doi.org/10.1002/9780470692592.ch1 (2008).
Linder, J. M. & Oates, J. F. Differential impact of bushmeat hunting on monkey species and implications for primate conservation in Korup National Park, Cameroon. Biol. Conserv. 144, 738–745 (2011).
Gilroy, J. J. & Edwards, D. P. Source–sink dynamics: a neglected problem for landscape-scale biodiversity conservation in the tropics. Curr. Landsc. Ecol. Rep. 2, 51–60 (2017).
Watson, J. E. M. et al. Catastrophic declines in wilderness areas undermine global environment targets. Curr. Biol. 26, 2929–2934 (2016).
Marshall, H. et al. Spatio-temporal dynamics of consumer demand driving the Asian songbird crisis. Biol. Conserv. 241, 108237 (2020).
Harris, J. B. C. et al. Measuring the impact of the pet trade on Indonesian birds. Conserv. Biol. 31, 394–405 (2017).
Carrasco, L. R., Chan, J., Mcgrath, F. L. & Nghiem, L. T. P. Biodiversity conservation in a telecoupled world. Ecol. Soc. 22, 24 (2017).
Blundell, A. G. & Mascia, M. B. Discrepancies in reported levels of international wildlife trade. Conserv. Biol. 19, 2020–2025 (2005).
Nelson, A. et al. A suite of global accessibility indicators. Sci. Data 6, 266 (2019).
Rao, M., Zaw, T., Htun, S. & Myint, T. Hunting for a living: wildlife trade, rural livelihoods and declining wildlife in the Hkakaborazi National Park, North Myanmar. Environ. Manage. 48, 158–167 (2011).
Symes, W. S., Edwards, D. P., Miettinen, J., Rheindt, F. E. & Carrasco, L. R. Combined impacts of deforestation and wildlife trade on tropical biodiversity are severely underestimated. Nat. Commun. 9, 4052 (2018).
Hinsley, A. et al. Building sustainability into the Belt and Road Initiative’s traditional Chinese medicine trade. Nat. Sustain. 3, 96–100 (2020).
Lechner, A. M., Chan, F. K. S. & Campos-Arceiz, A. Biodiversity conservation should be a core value of China’s Belt and Road Initiative. Nat. Ecol. Evol. 2, 408–409 (2018).
Farhadinia, M. S. et al. Belt and Road Initiative may create new supplies for illegal wildlife trade in large carnivores. Nat. Ecol. Evol. 3, 1267–1268 (2019).
Courchamp, F. et al. Rarity value and species extinction: the anthropogenic Allee effect. PLoS Biol. 4, 2405–2410 (2006).
Jetz, W. & Freckleton, R. P. Towards a general framework for predicting threat status of data-deficient species from phylogenetic, spatial and environmental information. Phil. Trans. R. Soc. B 370, 20140016 (2015).
Dulac, J. Global Land Transport Infrastructure Requirements: Estimating Road and Railway Infrastructure Capacity and Costs to 2050 (IEA, 2013).
Vilela, T. et al. A better Amazon road network for people and the environment. Proc. Natl Acad. Sci. USA 117, 7095–7102 (2020).
Challender, D. W. S., Harrop, S. R. & MacMillan, D. C. Towards informed and multi-faceted wildlife trade interventions. Glob. Ecol. Conserv. 3, 129–148 (2015).
Papworth, S., Milner-Gulland, E. J. & Slocombe, K. Hunted woolly monkeys (Lagothrix poeppigii) show threat-sensitive responses to human presence. PLoS ONE 8, e62000 (2013).
Toledo-Aceves, T., Garcia-Franco, J. G. & Lopez-Barrera, F. Bromeliad rain: an opportunity for cloud forest management. Ecol. Manage. 329, 129–136 (2014).
Challender, D. W. S. et al. Mischaracterization of wildlife trade threat. Science (30 October 2019).
Leung, B. et al. Clustered versus catastrophic global vertebrate declines. Nature https://doi.org/10.1038/s41586-020-2920-6 (2020).
Tierney, M. et al. Use it or lose it: measuring trends in wild species subject to substantial use. Oryx 48, 420–429 (2014).
Jachmann, H. Monitoring law-enforcement performance in nine protected areas in Ghana. Biol. Conserv. 141, 89–99 (2008).
Cardador, L., Tella, J. L., Anadón, J. D., Abellán, P. & Carrete, M. The European trade ban on wild birds reduced invasion risks. Conserv. Lett. https://doi.org/10.1111/conl.12631 (2019).
Grames, E. M., Stillman, A. N., Tingley, M. W. & Elphick, C. S. An automated approach to identifying search terms for systematic reviews using keyword co-occurrence networks. Methods Ecol. Evol. 10, 1645–1654 (2019).
R Core Team R: A Language and Environment for Statistical Computing (R Foundation for Statistical Computing, 2019).
Espinosa-Andrade, S. R. Road development, bushmeat extraction and jaguar conservation in Yasuni Biosphere Reserve Ecuador PhD Thesis, Univ. Florida (2012); https://ufdc.ufl.edu/UFE0044108/00001/citation
Schoppe, S., Matillano, J., Cervancia, M. & Acosta, D. Conservation needs of the critically endangered Philippine forest turtle, Siebenrockiella leytensis, in Palawan, Philippines. Chelonian Conserv. Biol. 9, 145–153 (2010).
Wilman, H. et al. EltonTraits 1.0: species-level foraging attributes of the world’s birds and mammals. Ecology 95, 2027 (2014).
Slavenko, A., Tallowin, O. J. S., Itescu, Y., Raia, P. & Meiri, S. Late Quaternary reptile extinctions: size matters, insularity dominates. Glob. Ecol. Biogeogr. 25, 1308–1320 (2016).
Aquino, R. & Calle, A. Evaluation of the conservation status of the game mammals: a comparative model in communities of the Pacaya Samira National Reserve (Loreto, Peru). Rev. Peru. Biol. 10, 163–174 (2003).
Aquino, R., Lopez, L., Garcia, G., Charpentier, E. & Arevalo, I. Conservation status and threats to atelids in the northeastern Peruvian Amazon. Primate Conserv. 30, 21–29 (2016).
Carrillo, E., Wong, G. & Cuarón, A. D. Monitoring mammal populations in Costa Rican protected areas under different hunting restrictions. Conserv. Biol. 14, 1580–1591 (2000).
Cronin, D. T. The Impact of Bushmeat Hunting on the Primates of Bioko Island, Equatorial Guinea (Drexel Univ., 2013).
Dasgupta, S. & Hilaluddin Differential effects of hunting on populations of hornbills and imperial pigeons in the rainforests of the eastern Indian Himalaya. Indian Forester 138, 902–909 (2012).
De Thoisy, B., Renoux, F. & Julliot, C. Hunting in northern French Guiana and its impact on primate communities. Oryx 39, 149–157 (2005).
Fay, J. M. An elephant (Loxodonta africana) survey using dung counts in the forests of the Central African Republic. J. Trop. Ecol. 7, 25–36 (1991).
Gamble, T. & Simons, A. M. Comparison of harvested and nonharvested painted turtle populations. Wildl. Soc. Bull. 32, 1269–1277 (2004).
Gonzalez, J. A. Harvesting, local trade, and conservation of parrots in the northeastern Peruvian Amazon. Biol. Conserv. 114, 437–446 (2003).
Gray, T. N. E. & Phan, C. Habitat preferences and activity patterns of the larger mammal community in Phnom Prich Wildlife Sanctuary, Cambodia. Raffles Bull. Zool. 59, 311–318 (2011).
Hall, J. S. et al. A survey of elephants (Loxodonta africana) in the Kahuzi-Biega National Park lowland sector and adjacent forest in eastern Zaire. Afr. J. Ecol. 35, 213–223 (1997).
Klemens, M. W. & Moll, D. An assessment of the effects of commercial exploitation on the pancake tortoise, Malacochersus tornieri, in Tanzania. Chelonian Conserv. Biol. 1, 197–206 (1995).
Kümpel, N. F., Milner-Gulland, E. J., Rowcliffe, J. M. & Cowlishaw, G. Impact of gun-hunting on diurnal primates in continental Equatorial Guinea. Int. J. Primatol. 29, 1065–1082 (2008).
Magige, F. J., Holmern, T., Stokke, S., Mlingwa, C. & Røskaft, E. Does illegal hunting affect density and behaviour of African grassland birds? A case study on ostrich (Struthio camelus). Biodivers. Conserv. 18, 1361–1373 (2009).
Maldonado, A. M. & Peck, M. R. Research and in situ conservation of owl monkeys enhances environmental law enforcement at the Colombian–Peruvian border. Am. J. Primatol. 76, 658–669 (2014).
Maldonado, A. M., Nijman, V. & Bearder, S. K. Trade in night monkeys Aotus spp. in the Brazil–Colombia–Peru tri-border area: international wildlife trade regulations are ineffectively enforced. Endanger. Species Res. 9, 143–149 (2009).
Muchaal, P. K. & Ngandjui, G. Impact of village hunting on wildlife populations in the Western Dja Reserve, Cameroon. Conserv. Biol. 13, 385–396 (1999).
Nuñez-iturril, G. & Howe, H. F. Bushmeat and the fate of trees with seeds dispersed by large primates in a lowland rain forest in western Amazonia. Biotropica 39, 348–354 (2007).
O’Brien, S. et al. Decline of the Madagascar radiated tortoise Geochelone radiata due to overexploitation. Oryx 37, 338–343 (2003).
Patrick, D. A., Shirk, P., Vonesh, J. R., Harper, E. B. & Howell, K. M. Abundance and roosting ecology of chameleons in the Eastern Arc Mountains of Tanzania and potential effects of harvesting. Herpetol. Conserv. Biol. 6, 422–431 (2011).
Poulsen, J. R., Clark, C. J. & Bolker, B. M. Decoupling the effect of logging and hunting on an Afrotropical animal community. Ecol. Appl. 21, 1819–1836 (2011).
Remis, M. J. & Kpanou, J. B. Primate and ungulate abundance in response to multi-use zoning and human extractive activities in a central African reserve. Afr. J. Ecol. 49, 70–80 (2010).
Rist, J., Milner-Gulland, E. J., Cowlishaw, G. & Rowcliffe, J. M. The importance of hunting and habitat in determining the abundance of tropical forest species in Equatorial Guinea. Biotropica 41, 700–710 (2009).
Rovero, F., Mtui, A. S., Kitegile, A. S. & Nielsen, M. R. Hunting or habitat degradation? Decline of primate populations in Udzungwa Mountains, Tanzania: an analysis of threats. Biol. Conserv. 146, 89–96 (2012).
Segura, A. & Acevedo, P. The importance of protected and unprotected areas for the Mediterranean spur-thighed tortoise demography in northwest Morocco. Amphib. Reptilia https://doi.org/10.6084/m9.figshare.7751783.v1 (2019).
Sung, Y.-H., Karraker, N. E. & Hau, B. C. H. Demographic evidence of illegal harvesting of an endangered Asian turtle. Conserv. Biol. 27, 1421–1428 (2013).
Topp-Jorgensen, E., Nielsen, M. R., Marshall, A. R. & Pedersen, U. Relative densities of mammals in response to different levels of bushmeat hunting in the Udzungwa Mountains, Tanzania. Trop. Conserv. Sci. 2, 70–87 (2009).
Yasuoka, H. The sustainability of duiker (Cephalophus spp.) hunting for the Baka hunter–gatherers in southeastern Cameroon. Afr. Study Monogr. 33, 95–120 (2006).
Protected Planet: The World Database on Protected Areas (WDPA) (UNEP-WCMC and IUCN, 2020).
QGIS Development Team QGIS Geographic Information System v.3.12.0 (Open Source Geospatial Foundation Project, 2020).
User Manual for the World Database on Protected Areas and World Database on Other Effective Area-Based Conservation Measures: 1.6 (UNEP-WCMC, 2019).
Hedges, L. V., Gurevitch, J. & Curtis, P. S. The meta-analysis of response ratios in experimental ecology. Ecology 80, 1150–1156 (1999).
Smithson, M. & Verkuilen, J. A better lemon squeezer? Maximum-likelihood regression with beta-distributed dependent variables. Psychol. Methods 11, 54–71 (2006).
Lajeunesse, M. J. in Handbook of Meta-analysis in Ecology and Evolution (eds Koricheva, J. et al.) Ch. 13 (Princeton Univ. Press, 2013); https://doi.org/10.23943/princeton/9780691137285.003.0013
Rubin, D. B. & Schenker, N. Multiple imputation in health-care databases: an overview and some applications. Stat. Med. 10, 585–598 (1991).
Sweeting, M. J., Sutton, A. J. & Lambert, P. C. What to add to nothing? Use and avoidance of continuity corrections in meta-analysis of sparse data. Stat. Med. 23, 1351–1375 (2004).
Viechtbauer, W. Conducting meta-analyses in R with the metafor. J. Stat. Softw. 36, 1–48 (2010).
Hothorn, T. et al. multcomp: Simultaneous inference in general parametric models. R package version 1.4-15 (2016).
Cochran, W. G. The combination of estimates from different experiments. Biometrics 10, 101–129 (1954).
Hoaglin, D. C. Misunderstandings about Q and ‘Cochran’s Q test’ in meta-analysis. Stat. Med. 35, 485–495 (2016).
McFadden, D. Quantitative Methods for Analyzing Travel Behaviour of Individuals: Some Recent Developments Discussion Paper No. 474 (Cowles Foundation, 1977).
Geary, R. C. The frequency distribution of the quotient of two normal variates. J. R. Stat. Soc. 93, 442–446 (1930).
Lajeunesse, M. J. Bias and correction for the log response ratio in ecological meta-analysis. Ecol. Soc. Am. 96, 2056–2063 (2015).
Rosenthal, R. The file drawer problem and tolerance for null results. Psychol. Bull. 86, 638–641 (1979).
Rosenberg, M. S. The file-drawer problem revisited: a general weighted method for calculating fail-safe number in meta-analysis. Evolution 59, 464–468 (2005).
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