Sunday, November 11, 2012

Small fungus: big change

UK unveils plan to fight deadly ash disease : Nature News 

It sounds like quite a  major forestry change is underway in England:
The UK government today announced an action plan to control the spread of “ash dieback”, a disease caused by the fungus Chalara fraxinea, but this will not stop the pathogen from killing up to 99% of the ash trees in the country, say scientists.

Diseased trees in nurseries — and those which have been newly-planted — will be identified and destroyed. Mature trees will be left standing, as the disease is not spread from tree to tree but via leaf litter. An import ban on ash trees, implemented at the end of October, will remain in place.

This however will not eradicate the disease from the United Kingdom. “There is absolutely no magic wand we can wave to make this disappear,” environment secretary Owen Paterson said at a press briefing in London this morning. Ash is the third most common tree in the UK, and with as many as 90 million ash trees at risk, the shape of the British countryside will be irreversibly changed.
 I thought that perhaps someone has pointed the finger at climate change for this fungus spreading, but my Googling around indicates this is not a connection that is really being made - yet. 

No comments: