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European butterflies could face dramatic extinction if global tempratures continue to rise, a new study says.
If the colorful insects try to migrate north to cooler climates, habitat destruction, such as deforestation, and large bodies of water might stop them.
"The problem for the butterflies is that the stops they have to take could be rather big ones”, explained Josef Settele. the study's Iead author and an ecologist at the Felmholtz Center for Environmental Research in Germany,
They might have to travel for 30 to 40 kilometers in one generation, and that distance becomes big”, he added.
If small numbers of a butterfly species do survive а northern migration, they still may not thrive. The insects may not be able to reproduce in sufficient numbers or their new habitat could degrade.