"Growing external resource dependencies are putting countries at significant risk, " said Mathis Wackernagel, President of Global Footprint Network, which collaborated with the WWF and the Zoological Society of London on the report.
"As resource constraints tighten globally, countries that depend heavily on ecological services from other nations may find that their resource supply becomes insecure and unreliable, and this has profound economic implications, " said Wackernagel.