|
Alaska Getting Shrubbier: Before and After
|
|
|
Before and after aerial landscape photos: Geologists looking for oil deposits in the late 1940s took some 3,000 low-level black and white photographs of Alaska’s North Slope. In 2000, scientists, whose findings appear in Nature this week, re-photographed 66 locations to study how shrubs have colonized the once-barren tundra landscape. (Photos courtesy U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory, Fort Wainwright, Alaska.)
|
|
