
Alien species to increase by 36 percent globally by 2050
Oct. 1 (UPI) -- The number alien species is projected to increase by 36 percent by 2050, according to a new study published Thursday in the journal Global Change Biology. Species are classified as alien when they colonize habitat outside their native ranges. Advertisement To predict how many new species will become aliens in the decades ahead, researchers relied on a mathematical model to analyze current rates of invasion, consider the source pool of possible invaders and produce simulations based on a 'business-as-usual' scenario. The model predicted that by the middle of the century, there will be 36 percent more alien plant and animal species than there were in 2005. If current invasion rates continue apace, the data suggests Europe will fare particularly poorly, with the continent ex...