Global Trends and Factors Associated with the Illegal Killing of Elephants: A Hierarchical Bayesian Analysis of Carcass Encounter Data
2011

Drivers of the Illegal Killing of Elephants

Sample size: 6337 publication Evidence: moderate

Author Information

Author(s): Robert W. Burn, Fiona M. Underwood, Julian Blanc

Primary Institution: Department of Mathematics and Statistics, School of Mathematical and Physical Sciences, University of Reading, Reading, United Kingdom

Hypothesis

What are the trends and factors associated with the illegal killing of elephants?

Conclusion

The study identifies poor governance and low human development as key drivers of elephant poaching.

Supporting Evidence

  • The study analyzed data from 6,337 elephant carcasses encountered by patrols.
  • Key drivers of illegal killing identified include governance and human development.
  • The analysis provides a basis for evidence-based decision making in the CITES process.

Takeaway

The study looks at how many elephants are being illegally killed and why, finding that bad government and low development lead to more poaching.

Methodology

The study used a Bayesian hierarchical modeling approach to analyze carcass encounter data from 66 sites in Africa and Asia.

Potential Biases

Potential biases include under-reporting of illegal killings and variability in detection probabilities of carcasses.

Limitations

The data may not be representative of all elephant range areas, and there are challenges in standardizing patrol effort across sites.

Participant Demographics

Data were collected from 66 sites across 36 range states in Africa and Asia.

Digital Object Identifier (DOI)

10.1371/journal.pone.0024165

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication