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Rising temps put desert shrubs in high-efficiency mode

ScienceDaily (July 27, 2020 )

Titre : Rising temps put desert shrubs in high-efficiency mode

Long-term observations track Mojave Desert plants’ responses to climate change

ScienceDaily (July 27, 2020 )

Death Valley doesn’t seem like the most ideal place to ride out rising temperatures amid a changing climate. But for the desert plants that live there, it’s home — and they face the choice to adapt or die.

Data for this study came from two long-term research sites in the remote deserts of the American Southwest — one in Death Valley and the other near Oatman, Arizona, both with an area of a few hundred square meters. The sites were established in the early 1980s by U distinguished professor of biology Jim Ehleringer, who recognized both the value of long-term observations, and the appeal of traveling somewhere warm during Salt Lake City’s cold months. Every spring for nearly 40 years, Ehleringer and members of his lab have visited the research sites to survey the vegetation and collect samples of plants for later analysis.

In 2020, a scaled-down and postponed survey trip still went forward. "Easy to distance when working in the wide-open of the Mojave," tweeted co-author Darren Sandquist.

The study focuses on one shrub species in particular : Encelia farinosa, also called brittlebush or incienso. It can live more than 30 years and is found widely throughout the Southwest and northern Mexico, with bright yellow flowers and silvery leave

Story Source  : University of Utah

Annonce (ScienceDaily)

Annonce (National Science Foundation)

Page publiée le 23 juin 2021