02 Mar 2012:
Some Scandinavian Conifers
Survived the Last Ice Age, Study Says
A new study has found that some Scandinavian conifers were able to survive the harsh conditions of the last Ice Age
, a finding that upends the long-held view that the region’s landscape was wiped clean by a
University of Copenhagen
A Scandinavian pine
massive blanket of ice. While scientists have long believed contemporary Scandinavian forests were populated by tree species that migrated from eastern and southern Europe after temperatures warmed, DNA evidence suggests some species of spruce and pine found refuge for tens of thousands of years. Indeed, the modern forests are comprised of “original” and “introduced” species, the researchers say. According to their study, published in the journal Science
, some tree species may have survived on Andøya Island, located in northwestern Norway, which was ice-free during the last Ice Age. They may also have found refuge in other more hospitable locations, such as atop nunataks — the exposed mountain peaks that protruded from glacial cover — or in more temperate zones along the Atlantic coast. These “original” species were then able to spread once the ice retreated, said Eske Willerslev of the University of Copenhagen.
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
A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
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.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.