HOME >> BIOLOGY >> NEWS
Do US ecosystems balance US fossil fuel use?

e times larger than the modeled flux, an uptake still much smaller than the atmospheric analysis implied.

The low estimates from the models and inventories suggest that ecosystems in the US, and North America, are storing carbon, but much less than is being emitted by fossil fuel use. The uptake is widely distributed around the US, in forests, grasslands, farmlands and other ecosystems. This result implies that other regions of the world - Europe, Siberia or the tropical forests - must also be important.

The uptake of carbon was modeled from 1895 to 1993. Over this period, the fluxes were highly variable as the weather varied from one year to the next. This shows that carbon storage is very sensitive to the climate and if there is climate change in the future, ecosystem carbon storage will respond. In general, warmer and drier conditions caused carbon release to the atmosphere. The high variability of carbon storage from one year to the next has another implication. Under the Kyoto protocol, which is the international agreement to limit fossil fuel emissions, "commitment periods" are identified during which national carbon budgets must be compiled, including estimates of carbon uptake in deliberately managed forests. However, the models show that the amount of ecosystem uptake is greatly variable and can even go from uptake to release from year to year! Therefore, depending on the weather, the ecosystem balance in a given country could be positive or negative during the commitment period, and this will complicate the use of reporting intervals.

Until recently, scientists and policymakers have assumed that CO2 fertilization was the main mechanism for carbon uptake by ecosystems. Carbon fertilization is the stimulation of plant growth by increasing atmospheric CO2, a well-known phenomenon. Recently, other mechanisms have also been identified as having global importance. In particular, the regrowth of forests on abandoned farmland (
'"/>

Contact: David Schimel
dschimel@bgc-jena.mpg.de
49-3641-643729
Max-Planck-Gesellschaft
9-Mar-2000


Page: 1 2 3

Related biology news :

1. New study to investigate demise of coral reef ecosystems
2. All ecosystems are equally productive under drought conditions
3. Biological oceanographers examine regime shifts in complex marine ecosystems
4. Freeing Nemo: Aquarium owners releasing non-native fish could endanger marine ecosystems
5. Faster carbon turnover in basal food-chain levels in aquatic than terrestrial ecosystems
6. URI oceanographer awarded NSF grant to study function of jellyfish in coastal ecosystems
7. Out-of-balance ecosystems play role in demise of amphibian populations
8. Northern climate, ecosystems driven by cycles of changing sunlight
9. Long-term decline of coral reef ecosystems reported
10. All species are not created equal when assessing the impacts of species loss on ecosystems
11. Finicky snails provide new clues to the evolution of coastal ecosystems

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: ecosystems balance fossil fuel use

(Date:11/7/2014)... Nov. 7, 2014  In conjunction with the ... Departments, The Community Foundation of the Verdugos has announced the ... JUSTICE PROJECT," a $250,000 initiative to keep the Verdugo Regional ... its first six months of existence, the Lab has processed ... for local law enforcement. "Because our number one ...
(Date:11/6/2014)... team of Florida State University biologists could lead to ... and survive environmental swings such as droughts or floods. ... the journal The Plant Cell , sheds light ... is organized in a cell and how plants regulate ... and others are turned off. , "If you understand ...
(Date:11/6/2014)... Except when that predator runs so fast that it essentially ... is the fastest creature on Earth. Some of these half-inch-long ... five miles per hour). The fastest human can do about ... tiger beetle, a person would have to hit 480 miles ... At peak speeds, everything becomes a blur. They can,t gather ...
Breaking Biology News(10 mins):Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2Maize analysis yields whole new world of genetic science 2The tiger beetle: Too fast to see 2
(Date:11/24/2014)... , Nov. 24, 2014  Spherix Incorporated ... company committed to the fostering and monetization of ... v. VTech Telecommunications Ltd.,  Case No. 3:13-cv-03494-M and  ... No. 3:13-cv-03496-M, both in the United States District ... Texas . On November ...
(Date:11/23/2014)... 23, 2014 Apiscent Labs, a ... fine chemical ingredients to the global pharmaceutical and ... its new website, Apiscent.com. , The Apiscent.com homepage ... clean design, easy navigation, rotating images and content ... stand out. , The company’s work ...
(Date:11/22/2014)... 21, 2014 During his lifetime Richard ... need to surround himself with great people and take ... his friends often marveled at his extraordinarily courageous attitude ... life and -- even with his death impending—that’s how ... disease that would ultimately take his life. , Carrying ...
(Date:11/22/2014)... CannLabs, Inc. (OTCQB: CANL), the ... testing methodologies relating to cannabis, today announced that it ... credit from an existing stockholder of the Company. ... commitment from one of our existing stockholders,” stated ... will help accelerate our planned expansions into the Connecticut ...
Breaking Biology Technology:Markman Hearing Held as Scheduled in VTech and Uniden Cases 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 3CannLabs Secures $750,000 Line Of Credit 2
Cached News: