2017-02-27. For Some Arctic Plants, Spring Arrives Almost a Month Earlier.

posted Mar 6, 2017, 5:52 PM by Alan Gould

By Steph Yin, The New York Times. For GSS Climate Change chapter 8. Excerpt: Every spring, Arctic plants rely on direct and indirect cues from the environment — like warmer weather, longer days and shrinking sea ice cover — to tell them when they should awaken from winter’s slumber. But as the climate warms, these plants are getting mixed signals about when to rouse. In a new paper published in Biology Letters, researchers detail findings from a 12-year study of when plant species in the low Arctic region of Greenland first green up in the spring. Timing varied from plant to plant, but one speedy sedge species — a flowering, grasslike herb — stirred a full 26 days earlier than it did a decade ago. ...Shifting patterns of plant growth may affect the availability of nutritious food for herbivores, for example. Dr. Kerby and his colleagues found in 2013 that more caribou calves died early in years when spring plant growth preceded the animal’s calving season....  https://www.nytimes.com/2017/02/27/science/arctic-plants-spring-global-warming.html