Land and oceans
White roofs could cool cities: study
Enzyme crystal helps crack HIV puzzle
Sugar sweetens decision making
Twilight zone secrets revealed
Astronomers spot asteroid collision
Algae master quantum mechanics
Protein 'ushers' key to beating malaria
Researchers spin artificial bee silk
New view of Pluto increases mystery
Cell's power packs came from within
Antarctic snow linked to WA dry
Termites inspire hydrophobic materials
Study shows why it's scary to lose money
Soil impact underestimated: climate study
Lack of oxygen forced fish's first breath
Harder Sudoku puzzles on the way?
Weed genes could help feed the world
Logging makes forests more flammable: study
Food crisis looms warn scientists
Tiny sensors track 'lost' objects
'Climategate' university orders review
'Plumbing' key to flowering success
New twist on solar cell design
Scientists set new temperature record
Soil impact underestimated: climate study
Finnish researchers have called for a revision of climate change estimates after their findings showed emissions from soil would contribute more to climate warming than previously thought.

The research, which appears in the February issue of the journal Ecology, shows that "the present standard measurements underestimate the effect of climate warming on emissions from the soil."

The researchers from the Finnish Environment Institute write that, "The error is serious enough to require revisions in climate change estimates."

They add that all climate models currently use soil emission estimates based on measurements received using an erroneous method.

While emissions from soil were known to have a significant influence on climate warming, the researchers say previous studies took into account short-term measurements which gave "systematically biased estimates on the effects of climate change on the emissions."

The Finnish scientists' experiments in boreal forests used radiocarbon measurements and showed that the more abundant, slowly decomposing compounds in soil were more sensitive to rises in temperature.

This showed "carbon dioxide emissions from the soil will be up to 50% higher than those suggested by the present mainstream method," if the mean global temperature rose by the previously forecasted 5C before the end of the century, and if the carbon flow to soil did not increase.

The institute said a 100% to 200% increase of forest biomass was needed to offset the increasing carbon emissions from soil, whereas previous estimates called for a 70% to 80% increase.
Less carbon?

This latest research contradicts a study that appeared in Nature Geoscience in November 2008, which concluded carbon dioxide emissions from soils are overestimated by as much as 20%.

The study, based on various Australian soils, found a much higher proportion of charcoal than estimated by previous models. This meant the amount of CO2 released by the soils is much lower than previously believed.

Either way, the findings have major implications for climate change predictions as annual carbon emissions from soils are estimated to be more than all human-made CO2 emissions combined.

Horny mother beetles fight for dung
Light-speed computing one step closer
Small asteroids 'just lumps of gravel'
Gene study reveals diverse gut zoo
Dinosaur extinction caused by asteroid: study
Study finds methane bubbling from Arctic
New view reveals Mars' icy history
Some nano-sunscreens 'come at a cost'
Dust bunnies could harbour toxic load
Aphid genome reveals its 'Achilles heel'
Tailored diet may slow down DNA damage
Scientist probe ballistic chameleon tongue
Moa eggshells yield ancient DNA
Toothbrush tech helps buses go green
Gene protects some Tassie devils from tumour
Smaller fish cope better with acidic water
Lunar mirror mystery solved
Parents give fewer bad genes than thought
Women on pill may live longer
Antarctic winds affect key ocean layer
Researchers uncover thalidomide mystery
Boost for evidence of early ocean
Ocean geoengineering may prove lethal
People leave unique 'germ print'
Rogue star on collision course
Butterflies 'fly early as planet warms'
Glaucoma may start in the brain
Tools push back dates for humans on Flores
Stem cell capsules to target broken bones
Ecstasy damages complex memory: study
Earliest animals flexed their muscles
Insomnia may shrink the brain: study
Experts call for 'resilience thinking'
Tutu's DNA could point to medical cures
Humble algae key to whale evolution
Happiness linked to healthy heart
Fewer cyclones, but more intense: study
Cosmic candles result of colliding stars
Flightless mosquitoes may curb dengue
Childhood poverty may leave its mark
Cautious response to technology strategy
Nanowire RAM to make ever-ready computers
Are non-smokers smarter than smokers?
There's iron in them thar Martian hills
'Shell Crusher' shark swam ancient oceans
Nanotechnology may tap into your mind
Small dogs originated in the Middle East
Brain 'hears' sound of silence
Swimmers 'may not understand' tsunami risk
Altruism surfaces on slow-sinking ship
Chile quake tops Haiti, but less deadly
Weedkiller 'makes boy frogs lay eggs'
Visit Statistics