Template-type: ReDIF-Paper 1.0
Author-Name: Dalmazzone Silvana
Author-Email: silvana.dalmazzone@unito.it
Author-Name: Giaccaria Sergio
Author-Email: sergio.giaccaria@unito.it
Author-Workplace-Name: University of Turin
Author-Workplace-Homepage: http://www.est.unito.it/
Title: Economic drivers of biological invasions: A worldwide, bio-geographical analysis
Abstract: The introduction of harmful non-indigenous species is generally acknowledged to depend
both on the propagule pressure imposed by openness to international trade and on the
health of the receiving ecosystem. Bio-geographical factors however play a crucial role in determining 
the level of risk associated with trade. We develop an analytical treatment of bio-geographical similarity between 
trade partners, within a model that links the incidence of invasive species to resource extraction, polluti 
on and to import volumes disaggregated by country and region of origin. The model, estimat ed with data on 
invasive species of all taxa in 123 countries, shows that considering the geographical structure of trade flows
and the bio-geographical similarity between sources and destinations substantially
improves our understanding of the drivers of biolog ical invasions. The results allow us to identify, 
in a worldwide perspective, the relative risk of biological invasions (by habitat and organism type) entailed by 
different commercial partners. 
Length: 31 pages
Creation-Date: 2012-10
File-URL: http://www.est.unito.it/do/home.pl/Download?doc=/allegati/wp2012dip/15_wp_dalmazzonegiaccaria.pdf
File-Format: Application/PDF
Handle: RePEc:uto:dipeco:201215