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:1/22/2015)... 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ... on the recent success of the Wocket™ smart wallet at CES 2015 ... wallet was named as one of the "11 Hot Products at CES" ... Launched At CES So Far" by Newseveryday.com and "The top 10 gadgets ...
(Date:1/22/2015)... , Europe,s most prestigious innovation prize ... present a video retrospective of the most exciting and innovative nominations  ... and Sophie Wilson   A different theme ... Starting on 22 January 2015 on   http://www.epo.org/european-inventor   ...
(Date:1/22/2015)... Infinisource has launched its new NXG series of time clocks ... a higher standard for collecting attendance and labor data and ... installation, touch screen interface and seamless connection to cloud-based iSolved, ... solution for the small to mid-size employer. The ...
Breaking Biology News(10 mins):CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3Infinisource's NXG series sets new time clock standard 2
(Date:1/22/2015)... CO / Rootstown, OH (PRWEB) January 22, 2015 ... detection platform, announced today that it has received AOAC-PTM Certifications ... O45, O1O3, O111, O121, and O145; collectively referred to as ... coli) O157, at 1 colony forming unit (cfu) per 325 ...
(Date:1/22/2015)... Selexis SA, a serial innovation company with ... used for drug discovery to commercial manufacturing, announced today ... Next-Generation Sequencing (NGS) data packages. The NGS analysis ... ensuring the integrity of the gene, validation of the ...
(Date:1/22/2015)... CAMBRIDGE, Mass. , Jan. 22, 2015   GenoSpace , ... suite of tools to enable the broad use of genomic, ... today announced the appointment of Michelle Munson , CEO ... independent director. Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... Texas , Dec. 24, 2014  Vermillion, Inc. ... on gynecologic disease, announced today that the Company ... including Oracle Investment Management, Jack W. Schuler ... Total proceeds were $10.5 million, before offering expenses.  ...
Breaking Biology Technology:Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3
Cached News: