Invasive
Species on the March: Variable Rates of Spread Set Current Limits to
Predictability (Sep
17, 2009) National Science Foundation. In a paper published in this week's issue of the journal Science (see
abstract;
full access requires subscription),
biologists report a previously unknown high variability
in the rates of invasive species spread. Although more research is needed,
the uncertainty the biologists found may place
more species at risk in a changing climate: flora and fauna may not be
able to march one step ahead of the pace of global warming.
