Navigation Links
Trees on tundra's border are growing faster in a hotter climate
Date:11/10/2011

Evergreen trees at the edge of Alaska's tundra are growing faster, suggesting that at least some forests may be adapting to a rapidly warming climate, says a new study.

While forests elsewhere are thinning from wildfires, insect damage and droughts partially attributed to global warming, some white spruce trees in the far north of Alaska have grown more vigorously in the last hundred years, especially since 1950, the study has found. The health of forests globally is gaining attention, because trees are thought to absorb a third of all industrial carbon emissions, transferring carbon dioxide into soil and wood. The study, in the journal Environmental Research Letters, spans 1,000 years and bolsters the idea that far northern ecosystems may play a future role in the balance of planet-warming carbon dioxide that remains in the air. It also strengthens support for an alternative technique for teasing climate data from trees in the far north, sidestepping recent methodological objections from climate skeptics.

"I was expecting to see trees stressed from the warmer temperatures," said study lead author Laia Andreu-Hayles, a tree ring scientist at Columbia University's Lamont-Doherty Earth Observatory. "What we found was a surprise."

Members of the Lamont Tree-Ring Lab have traveled repeatedly to Alaska, including the Arctic National Wildlife Refuge this past summer. In an area where the northern treeline gives way to open tundra, the scientists removed cores from living white spruces, as well as long-dead partially fossilized trees preserved under the cold conditions. In warm years, trees tend to produce wider, denser rings and in cool years, the rings are typically narrower and less dense. Using this basic idea and samples from a 2002 trip to the refuge, Andreu-Hayles and her colleagues assembled a climate timeline for Alaska's Firth River region going back to the year 1067. They discovered that both tree-ring width and dens
'/>"/>

Contact: Kim Martineau
kmartine@ldeo.columbia.edu
646-717-0134
The Earth Institute at Columbia University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. 400,000 farmers in southern Africa using fertilizer trees to improve food security
2. Restoring forests and planting trees on farms can greatly improve food security
3. Water evaporated from trees cools global climate
4. A 3-D reconstructed image of neural dendritic trees using the advanced electron microscope technology
5. For the love of trees: Book tells all about forest hydrology, biogeochemistry
6. Pacific Northwest trees struggle for water while standing in it
7. Book examines how trees change as they age and grow: What do these clues tell us?
8. Spread of fungus-farming beetles is bad news for trees
9. New research shows forest trees remember their roots
10. Climate change may alter conditions for growth of oak trees in Euskadi
11. Is root grafting a positive, cooperative behavior in trees?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Trees on tundra's border are growing faster in a hotter climate
(Date:7/10/2014)... June 27, 2014  Pomerantz LLP has filed ... ("Provectus" or the "Company")(NYSE-MKT: PVCT) and certain of ... States District Court, Middle District of ... of a class consisting of all persons or ... between December 17, 2013 and May 22, 2014, ...
(Date:7/10/2014)...  Unisys Corporation,s (NYSE: UIS ) subsidiary in ... announced that it has been selected by the Dutch Custodial ... Basic Provision Biometrics solution for penitentiaries across The ... with a solution based on its open standards-based LEIDA ... contract is up to seven years, with the new system ...
(Date:7/10/2014)... 3, 2014 According to the ... (Swipe And Area), Material (Optical Prism, Pizeoelectric, Capacitive, and ... and Banking & Finance), and Geography - Global Trends ... the global Fingerprint Sensors Market is projected to cross ... of 16.8% from 2014 to 2020. Browse ...
Breaking Biology News(10 mins):SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Fingerprint Sensors Market worth $14.35 Billion by 2020 2Fingerprint Sensors Market worth $14.35 Billion by 2020 3
... in his thesis that streams and lakes of Northern Sweden ... the atmosphere. Erik defends his findings at Sweden,s Ume University ... this study accounted for only about four percent of the ... releasing about ten times as much carbon as lakes," says ...
... and Drug Administration (FDA) mandates adequate enrollment of women in ... sex differences in device safety and effectiveness are not overlooked. ... of a study evaluating the participation of women and analysis ... a peer-reviewed publication from Mary Ann Liebert, Inc., publishers ...
... developed efficiency in the biomass supply and use for ... Energy and Environment Partnership Programme of the Ministry for ... working phases reduce transport costs by 15%. The production ... demonstrated to be financially and technologically sound. , Vietnam ...
Cached Biology News:Arctic inland waters emit large amounts of carbon 2Biomass supply chains developed by VTT speed up use of bioenergy in Vietnam 2
(Date:7/11/2014)... , July 11, 2014  Researchers have ... three-dimensional images. The new technology, called Virtual Finger, ... small structures like neurons and synapses using the ... unique technology makes 3D imaging studies orders of ... at an unprecedented level across many areas of ...
(Date:7/10/2014)... Toronto, Canada (PRWEB) July 10, 2014 ... often present in very low abundance and are ... quite challenging and time-consuming. , Join presenters Dr. ... Laboratories, and Dr. John Anders, Head of Quality ... mass spectrometer-based approach that can speed detection and ...
(Date:7/10/2014)... Terascala, the industry leader in ... a former vice president of product management for Flexera ... of marketing. Terascala’s software when combined with leading compute ... highest performance and most reliable solutions for processing big ... channel expansion and broaden its product portfolio. His leadership ...
(Date:7/10/2014)... CA (PRWEB) July 10, 2014 OMICS ... Bioanalytical techniques during 18-20 August, 2014 at Double Tree ... review the recent developments in Analytical & Bioanalytical research ... globe. , Speaking on this occasion, Dr. Srinubabu Gedela, ... Analytica Acta conference is a remarkable one in bringing ...
Breaking Biology Technology:Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Terascala Expands Executive Team 2Terascala Expands Executive Team 3A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4
... Include: - Initiation of development activities to ... Receipt of GRAS (Generally Recognized As Safe) ... commercialization in the U.S. and elsewhere- New ... Continued activities to support regulatory filings for ...
... of Hepatitis C Patients Is Skewed Towards Medicare ... in the General Population, According to a New ... Decision Resources, one of the world,s leading ... healthcare issues, finds that hepatitis C virus patient ...
... BioMarin Pharmaceutical,Inc. (Nasdaq: BMRN ) announced ... for the Riquent(R) Phase 3 ASPEN trial, the ... of the trial is,futile. BioMarin and partner ... unblind the data and evaluate all of the ...
Cached Biology Technology:SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 2SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 3SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 4SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 5SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 6SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 7SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 8SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 9SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 10SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 11SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 12SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 13SENOMYX ANNOUNCES FOURTH QUARTER AND YEAR-END 2008 FINANCIAL RESULTS 14Hepatitis C Virus Patient Opportunity Exists Within Many of the Major U.S. Local Markets 2Hepatitis C Virus Patient Opportunity Exists Within Many of the Major U.S. Local Markets 3Results of First Interim Efficacy Analysis for Riquent Phase 3 ASPEN Trial: Continuation of the Trial is Futile 2Results of First Interim Efficacy Analysis for Riquent Phase 3 ASPEN Trial: Continuation of the Trial is Futile 3