HOME >> BIOLOGY >> NEWS
Northern bogs may have helped kick-start past global warming

Methane gas released by peat bogs in the northern-most third of the globe probably helped fuel the last major round of global warming, which drew the ice age to a close between 11,000 and 12,000 years ago, UCLA and Russian Academy of Sciences scientists have concluded.

But the new information in no way lets human sources of greenhouse gases off the hook for the present round of global warming, warn the team of researchers whose findings appear in the Oct. 13 issue of Science.

"If anything, our findings show just how sensitive the planet's environment is to change and just how complex the results of these changes may be," said Glen M. MacDonald, the lead author of the study and a UCLA climate change scholar.

As the incipient bogs were strong producers of methane, the findings help solve a long-standing mystery about the source of a massive infusion of atmospheric methane that helped raise the Earth's surface temperature following the ice age.

"Scientists have long known that the northern bogs produce methane, but until now they were generally dismissed as the source of this change at the close of the last ice age because they were thought to have formed too slowly and too late to be a factor," said Laurence C. Smith, a UCLA professor of geography and study coauthor. "The initial development of the huge complex of northern bogs that now cover 1.54 million square miles occurred earlier than previously thought."

With funding from the National Science Foundation, MacDonald, Smith and four other researchers cored 84 peat bogs in Siberia. By radiocarbon dating the samples, they were able to reconstruct the timing of initial bog development. The researchers then assembled previously gathered radiocarbon dates for an additional 1,432 peat bogs throughout Northern Europe, Asia and North America, including Greenland.

They then compared the formation dates for these 1,516 bogs with high-resolution ice core records of t
'"/>

Contact: Meg Sullivan
msullivan@support.ucla.edu
310-825-1046
University of California - Los Angeles
12-Oct-2006


Page: 1 2 3 4

Related biology news :

1. Northern forests less effective than tropical forests in reducing global warming
2. Altered ocean currents disturb ecosystem off Northern California and Oregon coast
3. Researchers trawl the origins of sea fishing in Northern Europe
4. Northern birds are fatter!
5. Manomet report studies impact of massive turnover of timberland in New Englands Northern Forest
6. Neutral evolution has helped shape our genome
7. Fused nasal bones helped tyrannosaurids dismember prey
8. Protowings may have helped bird ancestors cover rough terrain
9. Invasive exotic plants helped by natural enemies
10. Children at risk, says Illinois agricultural economist who helped assess the worlds ecosystem
11. Pregnant moms exposure to flu vaccine kick-starts fetal immune system

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Northern bogs may have helped kick start past global warming

(Date:8/11/2015)... August 11, 2015 Today, ZUK announced its ... as well as expected revenues in 2015 that relate to sales ... revenue guidance of approximately 2,200 MSEK for 2015. Jörgen ... prominent smartphone manufacturer in China ... selected FPC1 155 for Z1 ...
(Date:8/6/2015)... Germany , August 6, 2015 ... (SMI) shows the world,s first Eye Tracking ... Epson,s Moverio BT-200 see-through head mounted display and on ... unprecedented quality and efficiency is brought to personalized visualization ... the first time, professionals and researchers can integrate gaze, ...
(Date:8/5/2015)... , Aug. 5, 2015 The biosensors market ... in applications, penetration into newer sectors, and development of ... global biosensors space has seen the entry of multiple ... so far. (Photo - http://photos.prnewswire.com/prnh/20150805/255570 ) ... Analysis of the Global Biosensors Market ( ...
Breaking Biology News(10 mins):FPC's Touch Fingerprint Sensor FPC1155 in ZUK's Smartphone Z1 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4
(Date:8/31/2015)... , Aug. 31, 2015  For people with Down ... their day. The biotechnology company, located in the Science ... of the best potential therapies yet for people with Down ... " Correction of Down syndrome and Edwards syndrome aneuploidies ... DNA Research . Elixirgen plans to develop this ...
(Date:8/31/2015)... 31, 2015 FLX Bio, Inc., a biopharmaceutical ... cancer immunotherapies, announced today that it has appointed ... and William Ho , M.D., Ph.D., as Chief ... management team led by veterans of Flexus Biosciences, Inc., ... Scientific Officer; Jay Powers , Ph.D., Vice President, ...
(Date:8/31/2015)... ... August 31, 2015 , ... There’s a new treatment option for excessive menstrual ... available new FDA approved system in the last 14 years, and the only endometrial ... (zero bleeding) rate of 66%, the high Patient Satisfaction rate of 98%, and the ...
(Date:8/28/2015)... ... August 28, 2015 , ... ... presented two studies at the International Spine Intervention Society’ s 23rd ... through to August 1st, 2015. With a focus on evidence-based research and clinical ...
Breaking Biology Technology:New Down syndrome therapy discovered 2FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 2FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 3FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 4U.S. FDA Approves Minerva Endometrial Ablation System 2U.S. FDA Approves Minerva Endometrial Ablation System 3Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 2Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 3Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 4
Cached News: