Home » GENERAL » Forests may lose ability to protect against extremes of climate change: Study
A view of Białowieża Forest, Belarus-Poland. CREDIT: IUCN Elena Osipova
A view of Białowieża Forest, Belarus-Poland. CREDIT: IUCN Elena Osipova

Forests may lose ability to protect against extremes of climate change: Study

Forests, one of the most dominate ecosystems on Earth, harbor significant biodiversity. Scientists have become increasingly interested in how this diversity is enhanced by the sheltering microclimates produced by trees.

A recent University of Montana study suggests that a warming climate in the Pacific Northwest would lessen the capacity of many forest microclimates to moderate climate extremes in the future.

The study was published in Ecography: A Journal of Space and Time in Ecology. It is online at http://bit.ly/2KcO1iC.

“Forest canopies produce microclimates that are less variable and more stable than similar settings without forest cover,” said Kimberley Davis, a UM postdoctoral research associate and the lead author of the study. “Our work shows that the ability of forests to buffer climate extremes is dependent on canopy cover and local moisture availability – both of which are expected to change as the Earth warms.”

She said many plants and animals that live in the understory of forests rely on the stable climate conditions found there. The study suggests some forests will lose their capacity to buffer climate extremes as water becomes limited at many sites.

“Changes in water balance, combined with accelerating canopy losses due to increases in the frequency and severity of disturbance, will create many changes in the microclimate conditions of western U.S. forests,” Davis said.

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