Warming alters mountain plant’s sex ratios
Mid-elevation male-female balance now shifted to higher altitudes, study finds
![Valerian plant](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/06/063016_am_alpineplant_feat_free.jpg?fit=860%2C460&ssl=1)
MOUNTAIN CLIMBER Male valerian plants like this one have moved up in elevation in response to hotter, drier climate conditions. As a result, male-female plant ratios have changed since the late 1970s, researchers have found. This plant is growing in the research team’s highest study site, at 3,790 meters.
W. Petry