Debunking the myth that a legal trade will solve the rhino horn crisis: A system dynamics model for market demand

Journal for Nature Conservation

Volumn 28, Issue , 2015, Pages 11-18

  Crookes, Douglas J ^a   Blignaut, James N ^a  

^a UNIVERSITY OF PRETORIA   (South Africa)

Author keywords

Demand; Horn; Rhino; System dynamics; Trade; Wildlife

Indexed keywords

HORN; MODELING; SPECIES CONSERVATION; TRADE; WILDLIFE MANAGEMENT;

EID: 84946398083     PISSN: 16171381     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jnc.2015.08.001     Document Type: Article

References (35)

1. Allen D.W. The Rhino's horn: incomplete property rights and the optimal value of an asset. The Journal of Legal Studies 2002, 31:339-358.
2. Beall A., Zeoli L. Participatory modeling of endangered wildlife systems: simulating the sage-grouse and land use in Central Washington. Ecological Economics 2008, 68(1-2):24-33.
3. Biggs D., Courchamp F., Martin R., Possingham H.P. Legal trade of Africa's rhino horns. Science 2013, 339:1038-1039.
4. Collins A., Fraser G., Snowball J. Rhino poaching: supply and demand uncertain. Science 2013, 340:1167.
5. Crookes D.J., De Wit M.P. Is system dynamics of relevance to neoclassical economists?. South African Journal of Economics 2014, 82(2):181-192.
6. Courchamp F., Angulo E., Rivalan P., Hall R.J., Signoret L., Bull L., et al. Rarity value and species extinction: the anthropogenic allee effect. PLoS Biology 2006, 4(12):e415.
7. Chen H., Chang Y.-C., Chen K.-C. Integrated wetland management: an analysis with group model building based on system dynamics model. Journal of Environmental Management 2014, 146:309-319.
8. Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), 2013. Rhinoceroses. Sixteenth meeting of the conference of the parties Bangkok (Thailand), 3-14 March 2013. CoP16 Inf. 51.
9. Di Minin E., Laitila J., Montesino-Pouzols F., Leader-Williams N., Slotow R., Goodman P.S., Moilanen A. Identification of policies for a sustainable legal trade in rhinoceros horn based on population projection and socioeconomic models. Conservation Biology 2015, 29(2):545-555.
10. Emslie R., Brooks M. African rhino. status survey and conservation action plan. IUCN/SSC African rhino specialist group 1999, IUCN, Gland, Switzerland and Cambridge, UK.
11. Faust L.J., Jackson R., Ford A., Earnhardt J.M., Thompson S.D. Models for management of wildlife populations: lessons from spectacled bears in zoos and grizzly bears in Yellowstone. System Dynamics Review 2004, 20(2):163-178.
12. Hall C.M.S. An investigation into the financial feasibility of intensive commercial white rhino farming in South Africa 2012, Faculty of Engineering Built Environment and Information Technology, University of Pretoria.
13. Hanks J. Operation lock and the war on rhino poaching 2015, Penguin Books, Cape Town.
14. Hall R.J., Milner-Gulland E.J., Chourchamp F. Endangering the endangered: the effects of perceived rarity on species exploitation. Conservation Letters 2008, 1:75-81.
15. Humane Society International (HSI), 2014. Demand for Rhino Horns in Viet Nam Decreases as a Result of Humane Society International and Viet Nam CITES Management Authority Partnership Campaign, Poll Says. URL: (accessed: 29.01.15.). http://www.hsi.org/assets/pdfs/vietnam-rhino-horn-campaign-poll-results.pdf.
16. International Monetary Fund World economic outlook, April 20104 2014, IMF, Washington D.C.
17. Litchfield C.A. Rhino Poaching: apply conservation psychology. Science 2013, 340:1168.
18. Lim C.Y. Economic theory and the East Asian region. The Singapore Economic Review 2005, 50:495-512. (special issue).
19. Lim C.Y. The trinity growth theory: a theory of wealth and poverty. EGC report no: 2012/03 2012, Nanyang Technological University, Singapore.
20. Leader-Williams N. The world trade in rhino horn: a review 1992, TRAFFIC International, Cambridge.
21. Mason C.F., Bulte E.H., Horan R.D. Banking on extinction: endangered species and speculation. Oxford Review of Economic Policy 2012, 28(1):180-192.
22. Millner-Gulland E.J. An econometric analysis of consumer demand for ivory and rhino horn. Environmental & Resource Economics 1993, 3:73-95.
23. Milner-Gulland E.J. How many to dehorn? A model for decision-making by rhino managers 1999, vol. 2:137-147. Animal, Conservation, ISSN. 1367-9430.
24. Milner-Gulland E.J., Beddington J.R., Leader-Williams N. Dehorning African rhinos: a model of optimal frequency and profitability. Proceedings: Biological Sciences 1992, 249(1324):83-87.
25. Milner-Gulland E.J., Leader-Williams N. A model of incentives for the illegal exploitation of black rhinos and elephants: poaching pays in Luangwa Valley, Zambia. Journal of Applied Ecology 1992, 29:388-401.
26. Milliken T., Shaw J. The South Africa-Vietnam rhino horn trade nexus: a deadly combination of institutional lapses, corrupt wildlife industry professionals and Asian crime syndicates 2012, Traffic, Johannesburg.
27. Prins H.H.T., Okita-Ouma B. Rhino poaching: unique challenges. Science 2013, 340:1167-1168.
28. Roberton S.I. Has demand for rhino horn truly dropped in Vietnam?. National Geographic 2014, (November).
29. Semeniuk C.A.D., Haider W., Cooper A., Rothley K.D. A linked model of animal ecology and human behavior for the management of wildlife tourism. Ecological Modelling 2010, 221(22):2699-2713.
30. Sng H.-Y. Economic growth and transition: econometric analysis of Lim's s-curve hypothesis (economic growth centre research monograph series, vol. 1) 2010, World Scientific, Singapore.
31. Shaw J. Supply and demand: the illegal rhino horn trade. The Horn, Spring 2012, p.20.
32. Turpie J., Joubert A. Estimating potential impacts of a change in river quality on the tourism value of Kruger National Park: an application of travel cost, contingent and conjoint valuation methods. Water SA 2001, 27(3):387-398.
33. Vecchiatto P. Government may auction stockpile of rhino horn. Business Day Live 2013, (July).
34. Van der Merwe P., Saayman M. Determining the economic value of game farm tourism. Koedoe 2003, 46(2):103-112.
35. Weller F., Cecchini L.-A., Shannon L., Sherley R.B., Crawford R.J.M., Altwegg R., Jarre A. A system dynamics approach to modelling multiple drivers of the African penguin population on Robben Island, South Africa. Ecological Modelling 2014, 277:38-56.