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Dragonflies face uncertain future http://apocadocs.com/s.pl?1242742979
At least one in ten species of dragonfly and damselfly are threatened with extinction, according to the first world survey of their numbers.
The figure may be an underestimate as so little is known about many species.
However, the news is not all bad. The survey published in Biological Conservation is the first to assess the vulnerability of any insect group on a global scale.
And it suggests the extinction risk faced by insects has been exaggerated.... "Amphibians are more threatened than dragonflies in general," says Clausnitzer. Amphibians are being particularly afflicted by the deadly chytrid fungus. "Another difference is that adult dragonflies are more mobile. If one site is destroyed they still have the chance to fly to another site, which frogs don't have."
They also seem less to be less threatened than the mammals, but at a similar level of risk as birds.
"We were a bit surprised that the dragonflies are not that bad off," says Clausnitzer.
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'Doc Michael says:
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So the threat-o-meter for dragonflies isn't as bad as mammals and amphibians. And birds. Well, whew!.
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