Navigation Links
Unaccounted feedbacks from climate-induced ecosystem changes may increase future climate warming
Date:7/25/2010

The terrestrial biosphere regulates atmospheric composition, and hence climate. Projections of future climate changes already account for "carbon-climate feedbacks", which means that more CO2 is released from soils in a warming climate than is taken up by plants due to photosynthesis. Climate changes will also lead to increases in the emission of CO2 and methane from wetlands, nitrous oxides from soils, volatile organic compounds from forests, and trace gases and soot from fires. All these emissions affect atmospheric chemistry, including the amount of ozone in the lower atmosphere, where it acts as a powerful greenhouse gas as well as a pollutant toxic to people and plants.

Although our understanding of other feedbacks associated with climate-induced ecosystem changes is improving, the impact of these changes is not yet accounted for in climate-change modelling. An international consortium of scientists, led by Almut Arneth from Lund University, has estimated the importance of these unaccounted "biogeochemical feedbacks" in an article that appears as Advance Online Publication on Nature Geoscience's website on 25 July at 1800 London time. They estimate a total additional radiative forcing by the end of the 21st century that is large enough to offset a significant proportion of the cooling due to carbon uptake by the biosphere as a result of fertilization of plant growth.

There are large uncertainties associated in these feedbacks, especially in how changes in one biogeochemical cycle will affect the other cycles, for example how changes in nitrogen cycling will affect carbon uptake. Nevertheless, as the authors point out, palaeo-environmental records show that ecosystems and trace gas emissions have responded to past climate change within decades. Contemporary observations also show that ecosystem processes respond rapidly to changes in climate and the atmospheric environment.

Thus, in addition to the ca
'/>"/>

Contact: Professor Timo Vesala
timo.vesala@helsinki.fi
358-405-779-008
University of Helsinki
Source:Eurekalert

Page: 1 2

Related biology news :

1. 7 California universities/NOAA to study climate, marine ecosystems
2. Breath of the Earth: Cycling carbon through terrestrial ecosystems
3. Balanced ecosystems seen in organic ag better at controlling pests
4. Healthy watersheds can sustain water supplies, aquatic ecosystems in a changing climate
5. Study challenges long-held assumption about competition in disturbed ecosystems
6. New online map shows network of protection for North Americas marine ecosystems
7. Millenium atoll: A pristine ecosystem
8. Researchers calculate the greenhouse gas value of ecosystems
9. The star of Africas savanna ecosystems may be the lowly termite
10. Modeling reef ecosystems focus of workshop
11. Ecosystems under threat from ocean acidification
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/10/2014)... pods began appearing on U.S. store shelves in early ... ever since. The small packets can be tossed into ... a liquid or powder. The convenience, though, has come ... from researchers at Nationwide Children,s Hospital found that from ... of 17,230 children younger than 6 years of age ...
(Date:11/6/2014)... Most cancer deaths occur because of metastasis, yet ... has been slow. , "It,s been particularly challenging ... Taran Gujral, research fellow in systems biology at ... aren,t detected until after they,ve already metastasized." , ... culprit that should help researchers better understand how ...
(Date:11/5/2014)... in their ability to identify scents and odors. ... perceptual evaluation of odors, with women outperforming men on ... differences in olfactory detection may play a role in ... perception of smell, which is naturally linked to associated ... suggested to be cognitive or emotional, rather than perceptual. ...
Breaking Biology News(10 mins):Study finds laundry detergent pods, serious poisoning risk for children 2Migration negation 2Migration negation 3The female nose always knows: Do women have more olfactory neurons? 2
... explosion of knowledge has been made in the last few ... a new report, helping to explain why coral reefs around ... them to survive a gauntlet of climate change and ocean ... rivals that of humans, have sophisticated systems of biological communication ...
... that prevents the body from using stored sugar has survived ... at the University of Florida putting scientists a step ... Called glycogen storage disease type 1A, the genetic disease ... use sugar between meals. In order to survive, children and ...
... N.Y. MAY 28, 2009 -- Starting pregnancy at a healthy ... to giving a baby a healthy start in life, the ... from the Institute of Medicine (IOM). The Institute ... a woman should gain during pregnancy. While the guidelines for ...
Cached Biology News:Studies shed light on collapse of coral reefs 2Studies shed light on collapse of coral reefs 3UF makes gene therapy advance in severe genetic disorder 2UF makes gene therapy advance in severe genetic disorder 3New guidelines to fight obesity in pregnancy issued 2
(Date:11/22/2014)... The “Chiral Chromatography Columns Market by type (Empty, ... by Application [GC, LC (HPLC, UHPLC, Flash Chromatography, ... and studies the major market drivers, restraints, opportunities, ... Rest of the World. , Browse 90 market ... pages and in-depth TOC on “Chiral Chromatography Columns ...
(Date:11/21/2014)... , Todd Martensen ... Mariano Rodríguez es elegid vicepresidente senior de desarrollo empresarial ... en marcha para comenzar de forma rápida la comercialización de ... aprobación en Europa   , KLOX ... los siguientes nombramientos: Todd Martensen ha ...
(Date:11/21/2014)... Author Matthew J. Pallamary’s second short ... Side” published as a tribute to his mentor ... Short Story” category of the 2014 USA Best ... of USA Book News, said this year’s contest yielded ... Simon & Schuster, Penguin, John Wiley & Sons, Houghton ...
(Date:11/21/2014)... Arkansas (PRWEB) November 20, 2014 ... Pinnacle Ozone Solutions, LLC (Pinnacle), and PCI, Inc., ... announced that they have been selected to provide ... of Fayetteville, Arkansas Paul R. Noland Wastewater Treatment. ... BlueInGreen’s patented HyDOZ® gas dissolution technology, ...
Breaking Biology Technology:Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 2Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 3Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 4Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 5KLOX Technologies anuncia sus nombramientos ejecutivos 2KLOX Technologies anuncia sus nombramientos ejecutivos 3KLOX Technologies anuncia sus nombramientos ejecutivos 4KLOX Technologies anuncia sus nombramientos ejecutivos 5Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4City of Fayetteville Leads Nation with Innovative Ozone Technology 2City of Fayetteville Leads Nation with Innovative Ozone Technology 3City of Fayetteville Leads Nation with Innovative Ozone Technology 4
... Growers Planting Pioneer Products with Herculex(R) XTRA Will Qualify for ... Lower ... announced today,growers who plant Pioneer(R) brand corn hybrids with the Herculex(R) ... will,be eligible for crop insurance premium reductions in select states in ...
... announced today that it has signed an agreement with AstraZeneca PLC ... to evaluate the therapeutic activity of selected AstraZeneca compounds. ... ... -- "Our agreement represents a significant opportunity for Melior to ...
... - First Product Developed from the VisEn-Merck & ... VisEn,s Leading Fluorescence Molecular Imaging Agent,Portfolio and Broadens ... Development -, BEDFORD, Mass., Aug. 19 ... imaging from research through medicine, announced,today the commercial ...
Cached Biology Technology:DuPont Obtains Biotechnology Endorsement for Pioneer(R) Brand Products 2DuPont Obtains Biotechnology Endorsement for Pioneer(R) Brand Products 3VisEn Announces Commercial Launch of IntegriSenseTM Fluorescence Molecular Imaging Agent 2
... by John M. Walker (1996) • ... analytical techniques for studying proteins and ... contains detailed, step-by-step instruction, timesaving troubleshooting ... comprehensive lists of reagents and suppliers. ...
... DNA Silver Staining Kit, 1. Select ... proteins and peptides on denaturing, native, ... improve reproducibility with precast gels, buffer ... comparable to that of radioisotopes with ...
Whole blood is collected from healthy pigs (mixed breed, either sex) at the time of slaughter, refrigerated within 6 hours, processed within 24 hours and frozen at -20ºC....
... Rhesus Serum • Rhesus serum is ... and 5-7 years of age. Available ... Heparin (Na) N-06: K2EDTA ... (Na) N-03: Alsevers N-05: ...
Biology Products: