Dec.
6, 2012 — The largest living organisms on the planet, the big, old trees
that harbour and sustain countless birds and other wildlife, are dying.
A
report by three of the world's leading ecologists in today's issue of the
journal Science warns of an alarming increase in deathrates among
trees 100-300 years old in many of the world's forests, woodlands, savannahs,
farming areas and even in cities.
"It's
a worldwide problem and appears to be happening in most types of forest,"
says lead author Professor David Lindenmayer of the ARC Centre of Excellence
for Environmental Decisions (CEED) and Australian National University.
"Large
old trees are critical in many natural and human-dominated environments.
Studies of ecosystems around the world suggest populations of these trees are
declining rapidly," he and colleagues Professor Bill Laurance of James
Cook University, Australia, and Professor Jerry Franklin of Washington
University, USA, say in their Science report.
"Research
is urgently needed to identify the causes of rapid losses of large old trees
and strategies for improved management. Without… policy changes, large old
trees will diminish or disappear in many ecosystems, leading to losses of their
associated biota and ecosystem functions."
No comments:
Post a Comment
You only need to enter your comment once! Comments will appear once they have been moderated. This is so as to stop the would-be comedian who has been spamming the comments here with inane and often offensive remarks. You know who you are!