A new disease called "sudden
oak death" has sparked fears that the English oak may be wiped out
in Britain. Dragon is calling for eco-magic work to try to stop
the spread of the disease.
The first confirmed UK case of the disease in an established
tree was annouced on 5th November 2003. The disease was found on
a single Southern red oak tree in Sussex. The tree was growing in
an area where P. ramorum had earlier been confirmed as
causing disease on rhododendrons.
Full details are in a press
release from the Forestry Commision.
What is Sudden Oak Death?
A new disease called "sudden oak death" which has
sparked fears that the English oak may be wiped out in Britain has
led the government to ban plant imports from parts of America where
the the disease is rampant.
The fungus, Phytophthora ramorum, which occurs
in garden shrubs as well as oaks, has been discovered in four British
nurseries in West Sussex, Lincolnshire, Dorset and Lancashire. The
plants involved have been seized and burned.
The alarm was first raised in America where oaks have
been dying in their thousands in the last two years. In California,
Oregon and other states cankers develop on trees and they appear
to bleed to death as sap spills from them turning red and running
down the trunk. Infected trees die in months.
Roddie Burgess, head of plant health at the Forestry
Commission, said "We are dealing with the unknown here. We do not
know how great the threat is but there is a severe mortality rate
among American oaks. It is possible that English oaks may have resistance
but we just do not know…Four types of American oaks get the disease
and it is fatal."
It's a brand new species of Phytophthora, never before
identified, airborne and aggressive, with no known natural enemies.
"For the first time we have an organism that can infect a broad
host range of plants in this country, with a biology that's completely
unknown," says Matteo Garbelotto, a forest pathologist at the University
of California- Berkeley. "It's like all of a sudden finding a very
poisonous snake that can fly."
Scientists are desperately looking for a cure. They're
studying organic chemicals that might prevent infection by Phytophthora
spores. They're testing different types of protective trunk coatings
that could be applied to a tree. They're also trying to develop
ways to boost a tree's own defensive response. But nothing yet has
proved a magic bullet. Another option is simply removing host species
like bay laurel from the forests, but that could have unknown effects
on an ecosystem.
Knowing where Phytophthora ramorum came from would
help, but that remains a mystery. It could be an exotic organism,
accidentally introduced from a locale where native plants have resistance
to it. Once here, it feasts on hosts that have no defense. It could
be a new species produced by genetic change, a hybrid with a potent
effect on oaks. Or it could have been present all along, benign
until an unknown factor caused it to become destructive.
The first UK outbreak was found in April 2002 in England.
The first finding in Scotland was recorded in May 2002.
Since then, the organism has been found at 17 horticultural
premises in Scotland and 110 in England and Wales. It has also been
found on the Channel Isles.
The above information is from:
www.guardian.co.uk/Print/0,3858,4407233,00.html
and www.nynjtc.org/externalnews/2002/sodd.html
More recent News from The Guardian,
March 3 2004:
Oak disease at two gardens
"A strain of a disease which has destroyed thousands of tan
oak trees in the United States has been found in two Cornish formal
gardens, the Lost Gardens of Heligan, and Caerhays, a few miles
to the South."
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More information:
www.scotland.gov.uk/pages/news/2002/10/SEEN212.aspx
News about the disease in Scotland
www.defra.gov.uk/news/2002/020503bquanda.htm
Gives DEFRA's position on Phytophthora ramorum fungus & risks
www.suddenoakdeath.org/
California Oak Mortality Task Force homepage
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Eco-magic Action
Dragon has been discussing this issue on our eco-magic
e-mail list. Possible approaches for magical intervention in
this potential crisis could be:
(a) Encourage everyone who knows some oak trees to
dress the surrounding soil with well rotten organic manure and compost
as part of a blessing ritual encouraging the oak's own immunity
at the same inviting predatory bacteria to the pathogenic feast.
(b)To increase awareness of the issue in governmental
circles & in general
(c)To direct 'bursts' of inspiration/creativity at
those groups/individuals who are seeking to understand the origins
of Phytophthora ramorum and direct to management/containment
plans for threatened tree species.
(d)Try to enter a dialogue with the fungus and/or
the oak tree Spirit to find out the best way forward. You might
use images of the Phytophthora ramorum
to help you.
(e) Magically build up the oaks' immune system
(f) Call to a bacterial predator of the fungus.
Theory:
Oak trees thrive in old forests which have thick layers of rich
soil. This kind of soil has billions of diverse organisms in just
a handfull, so suitable predators which are endogenous to the UK
should not be too far away.
Statistically, it's very likely that the UK has a
local bacteria somewhere which can eat the fungus. The problem is
getting the two together, leading a horse to water, so to speak.
Or to put it another way, it's a bit like cursing
the fungus with a bacterial illness whilst specifying that the bacteria
has to occur naturally in the UK in an oak forest environment.
Action:
- Contact the collective spirit of bacteria which
live in oak forest soil which can become predators of the fungus,
- Persuade them to go get it!
E-mail us
with your ideas and suggestions.
Recent suggestions:
Fi Saint channeled a suggestion for a natural predator-
ants
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