Impacts of plant invasions become less robust over time
by e! Science News | Earth & Climate | Nov 20, 2013
Among the most impressive ecological findings of the past 25 years is the ability of invasive plants to radically change ecosystem function. Yet few if any studies have examined whether ecosystem impacts of invasions persist over time, and what that means for plant communities and ecosystem restoration.
Over time, an invasive plant loses its toxic edge
by e! Science News,
in Biology and Nature | Sep 1, 2009
Like most invasive plants introduced to the U.S. from Europe and other places, garlic mustard first found it easy to dominate the natives. A new study indicates that eventually, however, its primary weapon – a fungus-killing toxin injected into the soil – becomes less potent.
Stinkwort's fast growth could threaten CA's wine growers
by Edward Ortiz, SacBee.com
in Agriculture | Aug 12, 2013
A new invasive weed has been expanding exponentially along roadways in the Sacramento region and the state, prompting plant scientists to warn that its unchecked growth could end up costing taxpayers millions of dollars.
The best-known and simplest definition of a weed is "a plant in the wrong place," that is, a plant growing where you would prefer other plants to grow, or sometimes no plants at all. But it's a coarse definition and raises the question of what is the "right place" for a plant.