The Arctic tundra, a critical “carbon sink” for ... by rising surface air temperatures is resulting in a range of ecosystem changes that are leading to increased emissions in the region ...

The Arctic tundra now emits more carbon dioxide and other greenhouse gases than it absorbs. Rising temperatures due to climate change have shifted the ecosystem’s effect on the planet – it has ...

The Arctic tundra is now emitting more carbon dioxide ... emphasizing numerous changes affecting both ecosystems and human communities. The thawing permafrost is a significant factor in this ...

For example, Rogers noted that the boreal forests combined with tundra ecosystems aren't clearly net emitters of more greenhouse gases than they take in, but this transition may be coming. However ...

After locking carbon dioxide in its frozen soil for millennia, the Arctic ... on ecosystems cannot be reversed." Warmer temperatures are impacting wildlife too, with the report finding tundra ...