SWEDEN:Scientists have found a cluster of spruces in the mountains in western Sweden which, at an age of 8,000 years, may be the world's oldest living trees.
The hardy Norway spruces were found perched high on a mountainside, where they have remained safe from recent dangers such as logging, but exposed to the harsh weather conditions of the mountain range which separates Norway and Sweden.
Carbon dating of the trees carried out at a laboratory in Miami, Florida, showed that the oldest of them first set root about 8,000 years ago, making it the world's oldest known living tree, Umea University professor Leif Kullman said.
California's "Methuselah" tree, a Great Basin bristlecone pine, is often cited as the world's oldest living tree, with a recorded age of between 4,500 and 5,000 years.
Two other spruces, also found in the course of climate change studies in the Swedish county of Dalarna, were shown to be 4,800 and 5,500 years old.
"These were the first woods that grew after the Ice Age," said Lars Hedlund, who has responsibility for environmental surveys in the county of Dalarna and is collaborator in climate studies there.
"That means that when you speak of climate change today, you can in these [ trees] see pretty much every single climate change that has occurred."
Although a single tree trunk can become at most about 600 years old, the spruces survived by pushing out another trunk as soon as the old one died.
- (Reuters)