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:8/28/2014)... Minn. A Mayo Clinic researcher and his collaborators ... up and enhance the process of re-engineering cells for ... uses network biology methods to aid stem cell engineering. ... engineering are described in two back-to-back papers in the ... a broad range of uses for all types of ...
(Date:8/28/2014)... 28, 2014  Privacy Advocate and Senior Staff Attorney ... , joins the lineup of biometric and mobile commerce ... UnPlugged Executive Summit in Tampa, Florida ... announced speakers include Steven Rahman, Director, Technology and Strategy at ... Experian. The theme of this year,s event is Mobility ...
(Date:8/28/2014)... the most commonly diagnosed learning disability in the ... occurs when the regions of the brain that ... use of non-invasive functional neuroimaging tools has helped ... However, most prior work has focused on only ... gap in our understanding of how multiple brain ...
Breaking Biology News(10 mins):New tool aids stem cell engineering for medical research 2Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2Dyslexic readers have disrupted network connections in the brain 2
(Date:8/27/2014)... BOSTON , Aug. 27, 2014 Rhythm, ... diseases and genetic deficiencies that result in metabolic disorders, ... on Form S-1 with the U.S. Securities and Exchange ... of shares of its common stock. The number of ... the offering have not yet been determined. ...
(Date:8/27/2014)... YORK , Aug. 27, 2014 /PRNewswire/ ... research report is available in its catalogue: ... 2014-2018 http://www.reportlinker.com/p02316661/Global-Biodegradable-Packaging-Materials-Market-2014-2018.html ... materials are materials that are readily decomposed ... differs from conventional non-degradable packaging in terms ...
(Date:8/27/2014)... is how plants survive impact by the huge ... while using this energy for photosynthesis. The hypothesis ... blades quickly dissipate the energy throughout the entire ... DTU Physics have now managed to successfully ,film, ... contain light-absorbing proteins which play a role in ...
(Date:8/27/2014)... Aug. 27, 2014 Reportlinker.com announces that ... its catalogue: Global Chelating Agents Market ... About Chelating Agent A chelating agent is ... with metal ions, thereby forming a metal-ion complex. ... have on chemical processes, formulations, and the environment ...
Breaking Biology Technology:Rhythm Files Registration Statement for Proposed Initial Public Offering 2Global Biodegradable Packaging Materials Market 2014-2018 2Global Biodegradable Packaging Materials Market 2014-2018 3Global Biodegradable Packaging Materials Market 2014-2018 4Global Biodegradable Packaging Materials Market 2014-2018 5Global Biodegradable Packaging Materials Market 2014-2018 6Global Biodegradable Packaging Materials Market 2014-2018 7DTU researchers film protein quake for the first time 2Global Chelating Agents Market 2014-2018 2Global Chelating Agents Market 2014-2018 3Global Chelating Agents Market 2014-2018 4
Cached News: