Novus participant Neil Pederson (Harvard) and colleagues recently published a new study in Science on the potential for future boreal forest climate refugia in North America. The study compiled growth records from 16,450 tree-ring records spanning 583,000 square kilometers of boreal forest in Québec, Canada. The authors found that below 49°N, growth decreased under future temperature and precipitation; however, above 49°N, increases in temperature resulted in increased growth even under drier conditions. Consequently, the authors concluded that northeastern North America may serve as boreal forest refugia under future climate scenarios.
D’Orangeville L, L Duchesne, D Houle, D Kneeshaw, B Côté, N Pederson (2016) Northeastern North America as a potential refugium for boreal forests in a warming climate. Science, 352:1452-1455