Prolonged effects of a warming anomaly on grasslands

Sep 24, 2008

Professors Yiqi Luo, Linda Wallace and Rebecca Sherry in the Department of Botany and Microbiology coauthored a paper with colleagues Jay Arnone and Paul Verburge at the Desert Research Institute; Dale Johnson from the University of Nevada at Reno; David Chimel from the National Center for Atmospheric Research; and others to report their findings on the long-term effects of warming anomaly on grassland productivity and ecosystem carbon cycling.

According to the paper, the research team excavated 12 soil monoliths, each weighing 12 tons, from the University of Oklahoma Kessler Farm Field laboratory. The monoliths were trucked to Reno, Nevada and housed in a greenhouse for four years. They were acclimated to the control environment in the greenhouse in the first year. Then, six of the 12 monoliths were subjected to warming treatments of 4 degrees Celsius and the rest remained in a control environment of average central Oklahoma conditions for the second year. In the third and fourth years, both control and warming-treated monoliths were kept at the control conditions.

The research team found that warming by 4 degrees Celsius in the Reno greenhouse not only depressed plant growth and suppressed land carbon absorption in the treatment year but also resulted in prolonged suppression of plant growth and carbon absorption in the following year.

Source: University of Oklahoma

Explore further: Magnitude-7.2 earthquake shakes Mexican capital

add to favorites email to friend print save as pdf

Related Stories

Beer Here

Nov 25, 2009

(PhysOrg.com) -- Drinking beer is a simple act, but making beer is not. It starts out with genetics and tens of thousands of barley varieties and ends with a clear ambrosia that belies the time, effort and technology that ...

Recommended for you

Magnitude-7.2 earthquake shakes Mexican capital

Apr 18, 2014

A powerful magnitude-7.2 earthquake shook central and southern Mexico on Friday, sending panicked people into the streets. Some walls cracked and fell, but there were no reports of major damage or casualties.

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

GrayMouser
2 / 5 (4) Sep 24, 2008
So they changed the microscopic flora and fauna of a 12 ton chunk of dirt, is anyone surprised that the growth pattern changed?

Did the relative humidity remain the same for those in an elevated temperature or did they end up drying them out?
mikiwud
2.3 / 5 (3) Sep 25, 2008
IF temperature rises by 4 deg C,it means,according to the "Religion of Al" that CO2 has atleast doubled again.Carbon dioxide enhances plant growth and has been shown they need less moisture at higher concentrations.
Can I have my grant retrospectively?

More news stories

China says massive area of its soil polluted

A huge area of China's soil covering more than twice the size of Spain is estimated to be polluted, the government said Thursday, announcing findings of a survey previously kept secret.

UN weather agency warns of 'El Nino' this year

The UN weather agency Tuesday warned there was a good chance of an "El Nino" climate phenomenon in the Pacific Ocean this year, bringing droughts and heavy rainfall to the rest of the world.

Airbnb rental site raises $450 mn

Online lodging listings website Airbnb inked a $450 million funding deal with investors led by TPG, a source close to the matter said Friday.

Health care site flagged in Heartbleed review

People with accounts on the enrollment website for President Barack Obama's signature health care law are being told to change their passwords following an administration-wide review of the government's vulnerability to the ...