The bioeconomics of illegal wildlife harvesting: An outline of the issues

Abstract The biological aspects of illegal harvests of threatened wildlife are outlined. It is shown that local agriculturalists are beneficiaries of illegal harvesting and that competition from agriculture exacerbates the extinction risk. Illegal harvesting of wildlife is driven by the profitability of the exercise, but law enforcement activity can deter poaching by reducing the associated expected profits. Law enforcement may be unable to limit illegal harvesting to levels threatened populations can sustain as a result of perverse consequences or strategic responses by poachers to law enforcement activity. Poaching activity is sensitive to the beliefs of participants about future prices and the availability of wildlife. Erroneous beliefs result in price collapses being observed. Integrating legal markets with increased local control of wildlife and punitive law enforcement strategies may be the most effective and efficient means to constrain illegal harvests.