12-26-2009, 10:27 AM
As the region has warmed in the Central Europe, some of butterfly species have added an extra generation during the summer for the first time on record in that location. Only a rough third or so of all the species show the capacity to breed more than once a year. What warming is probably doing for them, is jolting the insects’ overwintering form into action early and also speeding up insect development. Everything is changing because of the global warming