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:5/19/2015)... Sweden , May 18, 2015 ... fingerprint sensors FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from one ... from June until and including Q3 2015 and the sensors ... . Communicated order values for 2015 hereby amount to ... for Q1 2015 of 140 MSEK and a number of ...
(Date:5/14/2015)... , May 14, 2015  Verificient Technologies, ... verification and online remote proctoring, announced a ... (SaaS) company and creator of the Canvas ... the two companies will benefit from the ... As a fully integrated multifactor ...
(Date:5/8/2015)... , May 8, 2015 Synaptics Inc. (NASDAQ: ... today announced that members of the executive management team will ... 43rd Annual Technology, Media and Telecom Conference Date: May ... in Boston, MA Cowen ... 2015 Time: 2:45pm ET Location: The New York Palace Hotel, ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Synaptics to Present at Upcoming Investor Conferences 2
(Date:5/25/2015)... BOSTON , May 26, 2015  PureTech, a ... toughest health challenges in disruptive ways, announced today that ... Foundation and former CEO of Pearson, has been appointed ... Senior Independent Director and that current Board member ... appointed Board Chairman. Dr. Ben Shapiro , PureTech,s ...
(Date:5/22/2015)... DUBLIN , May 22, 2015  Actavis plc ... of the U.S. Court of Appeals for the Second ... 2014 preliminary injunction requiring the Company to continue distribution ... Logo - http://photos.prnewswire.com/prnh/20130124/NY47381LOGO   ... uphold this ruling, we intend to continue our strong ...
(Date:5/22/2015)... Baylor Research Institute (BRI) at Dallas ... in Phoenix, AZ , today announce ... treatments for patients with a broad range of cancers. Aligning ... clinical trials and access to technology to drive the development ... bedside across Baylor Scott & White Health,s 49 ...
(Date:5/21/2015)... 2015  Susan Hedstrom, Executive Director of the ... dedicated to supporting research to advance the understanding ... that FPWR has received the organization,s largest donation ... contributed $1 million in support of the organization,s ... "Our gift signifies our tremendous ...
Breaking Biology Technology:PureTech Adds Dame Marjorie Scardino to Board of Directors, Names Joi Ito as Chairman of the Board and Expands Management Team 2PureTech Adds Dame Marjorie Scardino to Board of Directors, Names Joi Ito as Chairman of the Board and Expands Management Team 3Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 2Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 3Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 4Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 5Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 6Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 7Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 8Precision Medicine Collaboration to Increase Options for Cancer Patients 2Precision Medicine Collaboration to Increase Options for Cancer Patients 3Precision Medicine Collaboration to Increase Options for Cancer Patients 4The Foundation for Prader-Willi Research Receives $1M Contribution in Support of Clinical Initiatives 2
Cached News: