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Qualia

Worldwide decline in large, old trees alarms scientists

December 31, 2012 | Author:AAAS member -- Freelance Writer Mary Bates, Ph.D.
Old Tjikko

Large, old trees play a critical role in many environments, from forests and savannahs to human-dominated areas like cities and farm lands. But a new study in the journal Science documents an alarming decline among trees 100-300 years old in ecosystems around the world.