From the Editors

Gallery | December 2019 cover

A Patagonian gull (Chroicocephalus maculipennis) flies over the Perito Moreno Glacier in southern Argentina. Glacier retreat causes extensive changes to glacier-fed biota across marine, freshwater and terrestrial systems worldwide.

Cauvy-Fraunié & Dangles. A global synthesis of biodiversity responses to glacier retreat. Nat. Ecol. Evol. 3, 1675-1685 (2019).