Previous studies of plant and animal migrations have offered indications that something — perhaps rising temperatures — was driving species northward and/or to higher altitudes. But these studies were isolated and doubts remained as to the true trigger of these movements and migrations.
But now comes evidence from the largest-scale analysis to date that such northward, migratory expansions and accelerating movements up-slope (i.e., to cooler/higher elevations) are largely attributable to warming and climate forcings.
The study, led by conservation biologist Chris D. Thomas of the University of York (England),  “puts to bed" the question of whether these shifts in flora and fauna ranges and altitudes are due to climate change. According to Thomas, as quoted in a recent Washington Post article (see link below), “There isn't any obvious alternative explanation for why species should be moving poleward in studies around the world."
The new meta-analysis incorporated data from over 50 papers and included altitude data on 23 plant and animal groups and latitude data (i.e., range shifts northward) from 31 groups. One of the more general findings of the study, which analyzed species migrations in Europe, North America, Chile and Malaysia, was that greater warming in any given region was strongly correlated to farther, northward migration (to cooler climes). Read the full report here.
Source: Michael Ricciardi, Planet Save.
