2011 Research Highlights
Examining the Role of Humans in the Spread of Invasive Species
New research supports better forest pest risk assessments
Scientists and collaborators with EFETAC have contributed innovative research to the field of forest pest risk assessment by focusing on pathways for the human-assisted spread of forest pest species. A recently published article in the journal Biological Invasions provides estimated annual rates of establishment of non-native forest insect species for more than 3,000 US urban areas based on historical data on merchandise imports and insect incursions to the US, pest interceptions at US ports of entry, and international and domestic freight shipment networks. The analysis anticipates where and how often invasive alien forest insects are likely to be established in the United States to assist decision makers and offer guidance for border control efforts, post-border surveillance, and rapid-response measures. Researchers have also developed similar non-native forest insect establishment rate estimates for Canada based on trade and have analyzed travel patterns of campers in the United States and associated firewood transport—a practice that can introduce forest pests into new and often remote areas. The research results provide key data to support and improve future forest pest risk assessments.
Contact: Frank Koch, research ecologist, (919) 549-4006, frank.h.koch@usda.gov
