Скачать или смотреть ITMN seminar #4 - Rising tree mortality in the Anthropocene

Seminar #4 of the International Tree Mortality Network seminar series
www.tree-mortality.net

Rising tree mortality in the Anthropocene
Nate McDowell

Tree mortality is rising in most documented locations but the drivers and mechanisms of this trend are unknown. Changes in atmospheric carbon dioxide, temperature, and vapor pressure deficit, along with drought, are primary potential drivers. Mechanisms linking these drivers to mortality include water, carbon, and pathogen defense processes. These processes are interdependent such that failure of one can lead to failure of the others. Prediction of future mortality is challenged by our understanding of the mechanisms, however, some evidence suggests the growing mortality rates are likely to continue well into the future. I conclude by reviewing the numerous challenges and opportunities for predicting future tree mortality.

Bio: Nate is a senior scientist at Pacific Northwest National Laboratory. He has studied tree mortality since the early 2000s, focusing on mechanisms and prediction.