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Crush and Burn: How the destruction of ivory fails to save elephants

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  • Gjerdseth, Emma A.

Abstract

Elephant populations have declined by half since 1979. In response, activists have promoted destroying confiscated and stockpiled ivory to “send a message” to reduce elephant poaching and ivory demand. As a result, more than 280 tons of ivory has been destroyed between 1989 and 2017. This is the first paper to estimate the causal effect of the amount and location of these destructions on the elephant poaching rate across African and Asian countries with elephants. I use data from CITES’ Monitoring of Illegal Killing of Elephants program from 2003 to 2019, paired with information on ivory destruction events. The main result is that the destruction of ivory does not reduce poaching rates. On the contrary, in African countries with elephants, ivory destructions increase poaching rates, with negative spillover effects from in-country events on the rest of the continent. This suggests the negative supply shock from the destructions dominate and incentivize poaching by increasing the (illicit) ivory price. For sites in Asia there is no evidence that elephant poaching rates respond to ivory destructions.

Suggested Citation

  • Gjerdseth, Emma A., 2025. "Crush and Burn: How the destruction of ivory fails to save elephants," World Development, Elsevier, vol. 185(C).
  • Handle: RePEc:eee:wdevel:v:185:y:2025:i:c:s0305750x24002365
    DOI: 10.1016/j.worlddev.2024.106766
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    References listed on IDEAS

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    1. Robert C. Feenstra & Robert Inklaar & Marcel P. Timmer, 2015. "The Next Generation of the Penn World Table," American Economic Review, American Economic Association, vol. 105(10), pages 3150-3182, October.
    2. Fischer, Carolyn, 2004. "The complex interactions of markets for endangered species products," Journal of Environmental Economics and Management, Elsevier, vol. 48(2), pages 926-953, September.
    3. Benjamin A. Olken & Rohini Pande, 2012. "Corruption in Developing Countries," Annual Review of Economics, Annual Reviews, vol. 4(1), pages 479-509, July.
    4. Robert W Burn & Fiona M Underwood & Julian Blanc, 2011. "Global Trends and Factors Associated with the Illegal Killing of Elephants: A Hierarchical Bayesian Analysis of Carcass Encounter Data," PLOS ONE, Public Library of Science, vol. 6(9), pages 1-10, September.
    5. Quy-Toan Do & Andrei A Levchenko & Lin Ma & Julian Blanc & Holly Dublin & Tom Milliken, 2021. "The Price Elasticity of African Elephant Poaching," The World Bank Economic Review, World Bank, vol. 35(3), pages 545-562.
    6. Moreno-Sanchez, Rocio & Kraybill, David S. & Thompson, Stanley R., 2003. "An Econometric Analysis of Coca Eradication Policy in Colombia," World Development, Elsevier, vol. 31(2), pages 375-383, February.
    7. Reyes, Luis Carlos, 2014. "Estimating the Causal Effect of Forced Eradication on Coca Cultivation in Colombian Municipalities," World Development, Elsevier, vol. 61(C), pages 70-84.
    8. Daron Acemoglu & Matthew O. Jackson, 2017. "Social Norms and the Enforcement of Laws," Journal of the European Economic Association, European Economic Association, vol. 15(2), pages 245-295.
    9. Robin Naidoo & Brendan Fisher & Andrea Manica & Andrew Balmford, 2016. "Estimating economic losses to tourism in Africa from the illegal killing of elephants," Nature Communications, Nature, vol. 7(1), pages 1-9, December.
    10. Solomon Hsiang & Nitin Sekar, 2016. "Does Legalization Reduce Black Market Activity? Evidence from a Global Ivory Experiment and Elephant Poaching Data," NBER Working Papers 22314, National Bureau of Economic Research, Inc.
    11. Fiona M Underwood & Robert W Burn & Tom Milliken, 2013. "Dissecting the Illegal Ivory Trade: An Analysis of Ivory Seizures Data," PLOS ONE, Public Library of Science, vol. 8(10), pages 1-12, October.
    12. Harvey, Ross & Alden, Chris & Wu, Yu-Shan, 2017. "Speculating a Fire Sale: Options for Chinese Authorities in Implementing a Domestic Ivory Trade Ban," Ecological Economics, Elsevier, vol. 141(C), pages 22-31.
    13. Damania, Richard & Bulte, Erwin H., 2007. "The economics of wildlife farming and endangered species conservation," Ecological Economics, Elsevier, vol. 62(3-4), pages 461-472, May.
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    More about this item

    Keywords

    Biodiversity; Conservation; Elephants; Endangered species; Illicit trade; Ivory; Poaching;
    All these keywords.

    JEL classification:

    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics
    • Q58 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Government Policy

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