How much difference does half a degree of global warming make to insects, vertebrates and plants?

TitleHow much difference does half a degree of global warming make to insects, vertebrates and plants?
Publication TypeJournal Article
Year of Publication2018
AuthorsWarren, R, Price, J, VanDerWal, J, Graham, E, Forstenhaeusler, N
JournalScience
Abstract

In the Paris Agreement on Climate Change, the United Nations is pursuing efforts to limit global warming to 1.5°C, whereas earlier aspirations focused on a 2°C limit. With current pledges, corresponding to ~3.2°C warming, climatically determined geographic range losses of >50% are projected in ~49% of insects, 44% of plants, and 26% of vertebrates. At 2°C, this falls to 18% of insects, 16% of plants, and 8% of vertebrates and at 1.5°C, to 6% of insects, 8% of plants, and 4% of vertebrates. When warming is limited to 1.5°C as compared with 2°C, numbers of species projected to lose >50% of their range are reduced by ~66% in insects and by ~50% in plants and vertebrates.

URLhttp://science.sciencemag.org/content/360/6390/791
DOI10.1126/science.aar3646