Tundra vegetation productivity and composition are responding rapidly to climatic changes
in the Arctic. These changes can, in turn, mitigate or amplify permafrost thaw. In this Review …

Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to
increase in response to warming and associated permafrost thaw. However, the lack of …

Vegetation shifts in circum-Arctic permafrost peatlands drive feedbacks with important
consequences for peatland carbon budgets and the extent of permafrost thaw under …

Coastal ecosystems represent a disproportionately large but vulnerable global carbon sink.
Sea-level-driven tidal wetland degradation and upland forest mortality threaten coastal …

Ghost forests consisting of dead trees adjacent to marshes are striking indicators of climate
change, and marsh migration into retreating coastal forests is a primary mechanism for …

Abstract In 2007, the Anaktuvuk River fire burned more than 1000 km2 of arctic tundra in
northern Alaska,~ 50% of which occurred in an area with ice-rich syngenetic permafrost …

Global change analyses are facilitated by the growing number of remote-sensing datasets
that have both broad spatial extent and repeated observations over decades. These …

The rapid replacement of upland forest by encroaching marshland is a striking manifestation
of global sea-level rise (SLR). Timely and high-resolution information on the location and …

Climate warming is projected to intensify tundra wildfire, with profound implications for
permafrost thaw. A major uncertainty is how increased burning will interact with climate …

Tall deciduous shrubs are critically important to carbon and nutrient cycling in high-latitude
ecosystems. As Arctic regions warm, shrubs expand heterogeneously across their ranges …