Food and Agricultural Organization of the United Nations
Alien Species Harmful to North American Forests
This informative site examines when do alien species are become harmful to North American forests and why is such a large issue now. International biodiversity agreements and programs are discussed as well.
Other
Aquatic Nuisance Species Task Force: Habitattitude
Dedicated to aquatic resource conservation, this task force addresses the expansion of harmful plants, fish, and other animals and invasive species
PBS
Nova: Matching Aliens With Impacts
One of the major causes of species extinction is the introduction of alien species. Information about ten different invasive species is presented. Find out how well you know the information by matching alien species with the effects...
Other
Protect Your Waters: Non Native Species Impacts
This site offers a complete explanation of how invasive animals and plants impact many of the different things valued by Americans. The economic impact is enormous and estimated to be about $100 billion dollars per year.
Other
Protect Your Waters
An informative site that suggests a number of things that the general public can do to prevent the spread of nuisance species.