Australia's
'climate corridor'
Australia
will need to create a wildlife corridor spanning
the continent to allow animals and plants to move
to cope with the effects of global warming. The
impacts of climate change should be less severe
in systems that remain intact and healthy.
The
2,800-kilometre climate 'spine' has been approved
in principle by state and national governments and
would link the country's entire east coast, from
the snow-capped Australian Alps in the south to
the tropical north, a distance equal to that from
London to Romania. How substantial the area will
be and its level of protection has not been agreed
upon.
Ideally,
the corridor would link National Parks, State Forests
and other government land to preserve scores of
endangered species.
Last
year Australia's Bureau of Meteorology said that
climate change was occurring so fast that cooler
southern towns were 'moving' to the warmer north
at the rate of 100 kilometres each year. Native
species adapted to a given region could find it
difficult to shift altitude or latitude if there
are obstacle courses of human landscapes throughout
the country. Connectivity is just one solution,
but it is an important one.
Jill / AAP 9.7.07
FOI
victory in NSW
For
years, NSW conservationists have been fighting to
find out the price Forests NSW gets for the logs
that are woodchipped and shipped to Japan. After
a long battle to obtain these figures under Freedom
of Information, Gerry Watt, a Tilba conservationist,
scored a victory in early September. Stephen Montgomery
of The NSW Administrative Decisions Tribunal handed
down a 33-page decision rejecting all the arguments
of Forestry NSW, handing Gerry Watt a decisive victory.
In a conclusion that stunned everyone who follows
freedom of information issues, Montgomery said:
"the public benefits from truth and transparency,
in regard to the management of public assets Š an
uninformed public cannot usefully participate in
that debate. Š The price at which a publicly owned
asset is being sold to private interests is a significant
factor in that debate. It is my view that the correct
and preferable decision is that the royalty rates
should be disclosed". That means, even though
jobs might be lost, mills might close and Forests
NSW could lose money (?) by releasing its price
for publicly owned trees, the need for transparency
and public debate was more important than jobs!
Montgomery
also said: "In my view, the factors favouring
disclosure are sufficiently strong to justify disclosure."
Forests NSW has 28 days to hand over the information.
It will be interesting to see which state is the
biggest economic fool.
Sydney
Morning Herald 6.9.07
FORESTS
- OUR CLIMATE CALMERS
Way
back, long before 1750, the planet supported eight
billion hectares of forest. These were vast, healthy
carbon soaks and storehouses, rain makers, weather
moderators and, of course, mega-rich biological
systems. Since that time, humans have destroyed
6.3 billion hectares, leaving only 1.3 billion hectares
of forest. Naturally (or unnaturally), this has
vastly reduced the earth's water cycles, weather
patterns and ecological systems. But most importantly,
this destruction has dramatically reduced the earth's
'lung capacity'.
The
degradation of forests and the soils they grow in
could easily account for the increase in carbon
dioxide (CO2 ) levels after
1750. In the past, increases in CO2
have been absorbed in the atmosphere fairly readily
(for instance, emissions from volcanic activity),
as shown by the Vostock ice-core samples. This natural
absorption of carbon is called biosequestration.
Clearing
and logging the world's forests has damaged its
capacity to absorb CO2 . This
forest-stripping habit of developing civilisations
goes way back to pre-Christian times. Burning forest
biomass for agriculture, building war ships and
fuelling metal and glass furnaces not only put large
whacks of carbon into the atmosphere but also took
away the planet's ability to absorb even more carbon.
When forests ran out, the 'civilised people' began
burning other carbon, the fossilised living matter,
now known as fossil fuels (coal and oil).
We
still pilfer and burn these ancient carbon stores
to increase our comfort, expand industries and consequently
increase our numbers, creating a momentum that will
be hard to slow down let alone stop . Over thousands
of years, we have built up a serious debt to the
planet's natural carbon stores.
To
put it simply, we can't pay back this debt simply
by slowing down our burning of oil and coal by using
alternate technologies and biofuels. We need to
immediately start soaking up the CO2
that we've put into the air above us over the centuries
and transform it back into solid carbon-storage
vessels called forests and trees.
"A
tall wet Eucalypt forest is one of the greatest
carbon storage units on the planet. It can store
1,500 tonnes per hectare without cost or effort.
Nothing else can do this."
Climate
chaos
Climate
chaos is unavoidable even if we stop all industry
and transport globally. Due to the lag effect from
last century's high CO2 releases,
during the coming decades we will be hit fully.
If you do the sums, we should reach the critical
450 ppm of atmospheric CO2
very soon. (But don't get depressed yet - read on
a bit further.) This is a tipping point expected
to start a rollercoaster ride of unstoppable carbon
release. Melting tundra and ice-caps, changed ocean
currents, forest fires and the other disasters in
waiting would all release more megatonnes into the
atmosphere. If you take into account methane and
other greenhouse gases, we are already at 430 ppm.
So no amount of wind turbines, nuclear plants, fancy
light bulbs or bicycles will stop this latent load
of carbon dioxide whacking the planet for a sixer.
But
wait! We're coming to the good news...
Forests
- the lungs of our land
The
earth and its reckless human passengers cannot avoid
the CO2 levels of 450 ppm
that will land us in the poo within a couple of
decades. But if we start restoring forests like
our lives depend on it, there is hope.
Since
we started burning fossil fuels for everything from
smelting iron to making jet fuel, it is estimated
that we've sent some 300 billion tonnes of land-based
carbon up in smoke. Compare this to the more than
2,000 billion tonnes that scientists calculate we
have put into the sky by knocking down forests and
degrading soils. Calculations suggest that the world's
original forests biosequestered carbon at about
300 billion tonnes a year.
If
we replaced just 5% of the original biosequestration
ability of the world's forests (ie 15 billion tonnes
of carbon a year) it should soak up the seven billion
tonnes of carbon we currently burn up each year,
with some to spare for absorbing our past emissions.
This would go a long way towards calming the global
climate chaos we are seeing. Practical and profitable
options for doing this already exist.
Forests
as heat moderators
The earth's original heat balance also depended
largely on forests and their cloud-making talents.
To a large degree, clouds and rain are a result
of the transpiration of water from forests. If clouds
don't form, less of the sun's heat is reflected
back, causing the ground to heat and less rain to
fall. This forest - cloud - rain process can govern
more than 50% of the earth's heat balance. Temperature
differences of 10^o C can show up between adjacent
areas - one forested, one cleared - because of the
cooling effect of clouds and rain. Past forest clearing
could have played a large part in global water-dynamics,
upsetting the earth's heat balance and triggering
regional and global warming. (The Mediterranean,
Middle East and Central America used to have a healthy
cover of forests.) Add to this the greenhouse effect
of increased CO2 and we have
some serious human-induced climate chaos.
Forests
- the climate cure
Letting large areas of cleared land regrow into
natural forests should give us a fast-acting remedy
for restoring natural water and heat processes,
while locking away loads of the carbon that's causing
problems overhead. But just slowing down our burning
of carbon fuels might take decades, or even a century,
to have an effect. That's assuming the population
doesn't keep growing. If cloud densities were increased
by 3% globally as a result of growing areas of forest,
and solar radiation reflected back to space increased
by about 1%, this should theoretically cool the
planet and reduce CO2 levels
back to pre-industrial levels.
The
solution is so obvious. However, governments and
even the Kyoto Protocol are not yet considering
forests as the major tool for reducing climate chaos.
There are still too many easy profits to be made
through their destruction.
Jill
- summerised from an article published in the April
- May issue of Nature and Society and from a transcript
of the ABC's 'Science Show' 4.8.07.
BIOFUEL
PUSH a mistake
The
European Union's target of ensuring 10% of petrol
and diesel comes from renewable sources by 2020
is not an effective way to curb carbon emissions.
Australia must also avoid this path as a 'solution'
to our increasing CO2 .
A
team of UK-based scientists suggested that reforestation
and habitat protection was a better option. Writing
in the magazine Science, they said that, given the
same area of land, forests could absorb up to nine
times more CO2 than the production
of biofuels could save. The increasing demand for
land to grow biofuels was also leading to more deforestation,
they added.
"On
the same area of land, forests could absorb up to
nine times more CO2
than the production of biofuels could save."
Dr
Righelato, co-author of the study and chairman of
the World Land Trust, said that the biofuel policy
could actually lead to more forest destruction.
Developing countries may be encouraged to cut down
their forests to plant biofuel crops in order to
meet the growing demand for renewable fuels. The
study compared the amount of carbon absorbed by
a forested area over a 30-year period with the total
emissions avoided by using biofuels instead of fossil
fuels during this time. They calculated that forests
store 100300 tonnes per hectare.
However,
Australian research estimates forests can store
up to 1,500 tonnes per hectare. The so-called second-generation
biofuels, those using feed stocks such as straw,
grasses and wood (wood?!) rather than grains or
palm oil, offered a much better opportunity to reduce
CO2. But until the price of
grain rises fivefold, these other feed stocks won't
be able to compete with grains and palm oil on price.
There
is also global concern that using food crops for
biofuels could not only jeopardise food availability
but also water.
Jill
/ BBC News, 17.8.07
Carbon calculations
The
scientific principle behind biomass is the carbon
cycle. When they grow, plants absorb carbon dioxide
- one carbon and two oxygen atoms (CO2
). The carbon (C) builds tissues and feeds the plant
while the oxygen (O2 ) is
released. When plant material is logged and burned,
or rots, the carbon recombines with oxygen. The
resulting CO2 is released
back into the atmosphere. This is roughly three
times heavier than carbon, leading to some confusion
between tonnes of carbon versus tonnes of CO2
.
Back
to news archive
Brumby
turbo charges global warming
The Victorian
Renewables Bill allows the clearfelling of native
forests to burn for 'renewable' energy. A Greens
amendment to prevent this was defeated on the 9th
of August when Labor, Liberal and National MPs voted
to allow native forests to be thrown into furnaces.
Greens
MLC, Greg Barber, said that in the run-up to the
2002 election, the state government promised that
native forest wood must never be burnt for electricity
in Victoria. Barber said the business case for logging
Victorian native forests is collapsing as plantation
timber is taking over the sawn-wood market. Now
VicForests is trying to find a new reason to log
native forests.
Jill/Greg
Barber 9.8.07
HowaRudd
on forests
Kevin
Rudd is parroting John Howard on every important
issue, including forest destruction. Howard slams
the unions whenever he can and Rudd kicks unionists
out of the Labor party for swearing. And when it
comes to the forestry arm of the CFMEU, these unionists
are left alone by both sides of politics.
The
pro-mill, anti-forests policies of both leaders
unite Rudd and Howard just as much as the pay rise
for politicians. Both leaders are subservient to
the bully-boy tactics of the logging industry.
HowarRudd
don't have any credibility on climate change. Voters
alarmed by the loss of Australia's forests and the
greenhouse gases emitted by burning them will have
a limited choice at the election.
'Fire-breaks'
environmental Berlin walls
It's
been a huge bonanza for logging and earth-moving
companies. Since last summer's fires, reckless clearing
of extremely large swathes of high-quality forest
has continued under the guise of fire safety. Last
April/May, the Bracks Government agreed to stop
these monstrous 'fire-breaks' until a public consultation
process was put in place. But more and more areas
of forest have been lineally logged along tourist
roads and tracks, and the practice continues. Funny
thing about this is that the CFA, Victorian Association
of Forest Industries, the Institute of Foresters
Australia, Forest Fire Victoria and most scientists
oppose the firebreaks (comments submitted to the
'Impact of Public Land Management Practices on Bushfires
in Victoria' investigation). No fire-fighter would
ever use these areas to tackle a fire. And backburn
lines only need to be a road's width (six - ten
metres), not 100 metres. In the Otways and the Mallee,
these fire-breaks are more than 100 meters in width
and are literally ripping the guts out of decades
of land restoration.
Jill
The
Great Snowy Dehydration project
With
the drought hitting irrigators on the Murray side
of the range, and Snowy Hydro finding it doesn't
have enough water to generate the power it wants,
Politicians are reneging on their legal promise
to restore some water to the gasping Snowy River.
We've
always known politicians' promises don't count for
much, but now they even seem to be thumbing their
noses at their legal obligations. It's been five
years since a cross-border agreement was reached
to return 28% of natural flows to the Snowy River.
There was to be 15% returned by 2009, but since
2002 sweet f.a. has happened.
Now
the Feds are talking about fixing up the Murray/Darlings'
problems! Yeah, sure.
Five
years ago, our governments legislated to establish
the Snowy Scientific Committee to research and advise
governments on the river's environmental flows.
This legal promise has never been honoured. The
planned release of water for 2007/2008 will be just
3.5% from the Jindabyne dam. It's a long way from
the guarantee to put back 28% by 2012.
Water from the Mowamba Aqueduct was given back to
the Snowy in August 2002 amidst great pomp and ceremony.
Bob Carr, Steve Bracks and yes, Peter Garrett, were
there to offer media photo opportunities. But in
January this year, Snowy Hydro Ltd took the water
back again by turning the aqueduct back on. The
Snowy is still craving for that drink it was promised
five years ago.
Jill
Thomson dam condemned to drought
Melbourne
has a doomed dam that may never be full again. The
Thomson Dam was built in the late 1970s/early 1980s
to supply Melbourne's increasing thirst. It took
around six to seven years to fill, from 1983-89.
It was at its lowest level of around 17 - 18% early
this year. The last time the dam was at this level
was while being filled in 1984.
It
is a huge dam - it would take at least six years
of average rainfall to fill it! When it was originally
filled during the 1980s, forest logging was nowhere
near today's scale. Logging began to take off in
the Thomson catchment around Baw Baw from the mid
-1980s. It sky-rocketed following the signing of
the RFA in 1998, and has recently been brought slightly
back.
After
the few big downpours we had in winter, the dam
was at 38.4%, almost 10% below where it was at the
end of last winter.
Sunday
Age 26.8.07/Chris / Jill