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Environmental sciences/Ecology/Applied ecology/Conservation biology/Extinction

The brown argus butterfly has expanded its range in the last 20 years, researchers report, as warmer conditions have turned seldom-used host plants into better places to lay eggs.

It’s often thought that one species’ dependence on others will limit its ability to relocate in response to climate change. But the new study, which appears in the 25 May issue of Science, shows that the opposite can also happen.

For many lizards, global climate change is a matter of life and death. After decades of surveying Sceloporus lizard populations in Mexico, an international research team has found that rising temperatures have driven 12% of the country’s lizard populations to extinction. An extinction model based on this discovery also forecasts a grim future for these ecologically important critters, predicting that a full 20% of all lizard species could be extinct by the year 2080.