Thread: :- Bird family trees predict decline -:
View Single Post

Old 12-06-2008, 12:05 PM   #2 (permalink)
Dew Drops
Thumbs Up Re: :- Bird family trees predict decline -:
Quote:
Originally Posted by GreyLapTop View Post
A new genetic family tree of the UK's birds may help predict which will see their populations decline in future.



The family tree - or phylogenetic map - shows how closely species are related.

The scientist who compiled it, Gavin Thomas, found that populations of closely related species tend to undergo declines more or less in step.

Writing in the Royal Society's journal Proceedings B, he suggests that an apparently healthy species may be at risk if its relatives are disappearing.

So the decline in the song thrush, mistle thrush and starling could suggest problems ahead for the blackbird, which is currently thriving.

Likewise, falling numbers of linnets and bullfinch might suggest that the greenfinch is not as safe as its numbers would imply.

"This hasn't been tested on the ground, so we don't know at the moment whether the inferences we're making turn out to be true," Dr Thomas told BBC News.


Harpal Thanks for the info


Reply With Quote