23 Nov 2011:
Court Restores Protections
For Yellowstone Park’s Grizzly Bears
A federal appeals court has ruled that Yellowstone National Park’s population of 600 grizzly bears was improperly removed from the endangered species list, saying the bears face an unprecedented threat from the widespread die-off of a key food source
, the white bark pine. A three judge panel of the U.S. 9th
Circuit Court of Appeals said that the massive loss of white bark pine
was due to climate change, since warmer winters have enabled the larvae of a major pest — the pine beetle — to survive and destroy or damage 40 percent of Yellowstone’s white bark pine trees. The ruling makes the Yellowstone grizzly population only the second wildlife species, after the polar bear, to earn protection under the Endangered Species Act because of climate change. Grizzly bears eat the nuts of the white bark pine, and the appeals court panel agreed with conservationists that the loss of the trees at high elevations could drive the grizzly bears to lower, more populous areas
, increasing bear/human confrontations. The ruling is not expected to significantly change the U.S. Fish and Wildlife Service’s strategy for stabilizing grizzly populations. A lawyer for a conservation group said the decision reflects growing recognition that “global warming is completely transforming natural places across the West.”
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
A 2015 Yale e360 Video Contest winner captures stunning images of wild salmon runs in Alaska. Watch the video.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.