Navigation Links
High carbon dioxide levels spur Southern pines to grow more needles

A Duke University study has found that maturing stands of pines exposed to the higher levels of carbon dioxide expected by mid-century produce more needles than those absorbing today's levels of the gas, even under drought conditions. However, the study also found that lack of soil nutrients may impose limitations in many forests.

Duke graduate student Heather McCarthy will describe results she obtained from a futuristic open-air experimental forest site at 8 a.m. Eastern Time on Thursday, Aug. 11, 2005 during the 2005 annual meeting of the Ecological Society of America in Montreal.

Her work was supported by the United States Department of Energy and the U.S. Department of Agriculture's Forest Service.

McCarthy, who has just competed her fifth year as a doctoral student in environmental studies at Duke's Nicholas School of the Environment and Earth Sciences, analyzed 10 years of pine needle data collected at the Free-Air Carbon Dioxide Enrichment (FACE) experiment in Duke Forest, a near-campus research reserve.

At FACE, some stands of fast-growing loblolly lines are being exposed to the higher levels of CO2 expected by 2050 due to human activities such as fossil fuel burning. Other stands are left as untreated controls for comparison. The elevated carbon dioxide is delivered from rings of towers in the open air setting of a Southern forest ecosystem.

McCarthy found that, over the most recent six years of the FACE experiment, the pines receiving elevated CO2 had on average about 17 percent more needles than untreated pines. Higher needle percentages in trees receiving the gas were recorded even during years when forest soils were driest -- when both treated and untreated trees suffered dryness-related needle losses and less leaf growth.

"This would imply that, even under drought conditions, there would probably be an enhancement with elevated CO2," McCarthy said in an interview.

Her analysis singled out the last
'"/>

Source:Duke University


Page: 1 2 3

Related biology news :

1. Deep sea algae connect ancient climate, carbon dioxide and vegetation
2. Microbe has huge role in ocean life, carbon cycle
3. Marine bacterium suspected to play role in global carbon and nitrogen cycles
4. Field tested: Grasslands wont help buffer climate change as carbon dioxide levels rise
5. Modifications render carbon nanotubes nontoxic
6. Climate change will affect carbon sequestration in oceans, model shows
7. Storing carbon to combat global warming may cause other environmental problems, study suggests
8. Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning
9. Of mice, men, trees and the global carbon cycle
10. Higher carbon dioxide, lack of nitrogen limit plant growth
11. Iron critical to ocean productivity, carbon uptake

Post Your Comments:
(Date:11/5/2009)... been awarded a training grant in the amount of $2...its Integrative Graduation Education and Research ...grant to be awarded to Kent State. The grant, whic...stment Act of 2009, runs through 2014. , The gra...ent aquatic resource sensing (EARS). The purpose o...
(Date:11/4/2009)..., 2009 Childhood obesity in the United States is ...fourth of advertising on daytime and prime time te...uing questions about the role television plays in ... the Journal of Nutrition Education and Behavior ...ight be a large contributor to the problem. , Re...
(Date:11/4/2009)...., Oct. 19 Spectros, developer and...aging devices which shed light on life-threatening...usive distribution deals for both its T-Stat®...ered include Australia, New Zealand, The Netherla...y, France, Spain, Portugal, Poland, Greece, Turkey...
Breaking Biology News(10 mins):Kent State receives $2.7 million NSF training grant for environmental aquatic resource sensing 2TV bombards children with commercials for high-fat and high-sugar foods 2TV bombards children with commercials for high-fat and high-sugar foods 3Spectros Signs New International Distribution Deals 2Barry Bloom Jeffrey Sachs to Be Honored for Introducing Modern Solutions to The Worlds Oldest Problems 3A Poverty And Disease 56063 1Barry Bloom Jeffrey Sachs to Be Honored for Introducing Modern Solutions to The Worlds Oldest Problems 3A Poverty And Disease 56063 2Tanning Beds as Harmful as Tanning in the Sun Reports Harvard Women 26apos 3Bs Health Watch 56061 1Tanning Beds as Harmful as Tanning in the Sun Reports Harvard Women 26apos 3Bs Health Watch 56061 2Rush Copley Medical Center Uses Thomson Reuters Order Sets Solution to Improve Joint Commission S3 Scores 56059 1Rush Copley Medical Center Uses Thomson Reuters Order Sets Solution to Improve Joint Commission S3 Scores 56059 2Rush Copley Medical Center Uses Thomson Reuters Order Sets Solution to Improve Joint Commission S3 Scores 56059 3
...rn Sudan, after conflict there ended in 2004, foun.... The results, published in PLoS Medicine, have ma...ces in the region. , Sudan is the largest country ... southern region of the country is very remote and...arly half a century, with only short intervals of ...
...n the brain snips apart the protein that forms the...allmarks of Alzheimer,s disease (AD), researchers ...st that the protein, called Cathepsin B (CatB), is...l in some forms of AD. Also, they said their findi...uld break down amyloid deposits, counteracting one...
... of the kidneys, a new major study from Karolinska...other kinds of fatty fish a few times a month woul...the 1980s, 90,000 Swedish women were sent a questi... their mammography scan. Now, with the help of ano...egistry, scientists at Karolinska Institutet have ...
Other Biology News:High levels of blindness in southern Sudan following years of war 2Enzyme shreds Alzheimer's protein 2
(Date:11/5/2009)...irstCall/ -- BioSpecifics Technologies Corp. (Nasd...g first-in-class collagenase-based products, today...rter ended September 30, 2009. ,, "We were ext...FDA,s Arthritis Advisory Committee unanimously rec...EX(TM) for the treatment of Dupuytren,s disease, a...
(Date:11/5/2009)...FirstCall/ -- WaferGen Biosystems, Inc. (OTC Bulle...the-art genetic analysis systems, today announced ...ny,s Scientific Advisory Board. His career has be...molecular diagnostics for cancer detection and oth...tional biology systems for several biotechnology c...
(Date:11/5/2009)...d vision correction experts listed in the Trusted ... the recently concluded American Academy of Ophtha..., California. Dr. Stephen Brint, MD, Dr. Frederick...eter Rapoza, MD, Dr. Michael Raizman, MD, Dr. Jame...d Manche, MD, and Dr. Parag Majmudar, MD, all lead...
(Date:11/4/2009).../ -- DIATHERIX Laboratories, Inc. (DIATHERIX) ( w...an Security Network Homeland Security Market Leade..., Chairman and Chief Executive Officer of DIATHERI...molecular diagnostic testing on bio-preparedness, ...d military efforts. ,, "This conference is esp...
Breaking Biology Technology:BioSpecifics Technologies Corp. Reports Third Quarter 2009 Financial Results 2BioSpecifics Technologies Corp. Reports Third Quarter 2009 Financial Results 3BioSpecifics Technologies Corp. Reports Third Quarter 2009 Financial Results 4BioSpecifics Technologies Corp. Reports Third Quarter 2009 Financial Results 5WaferGen Names Christopher Sears, Ph.D., Architect of High-Value Molecular Diagnostics and Computational Biology Platforms, to Company's Scientific Advisory Board 2WaferGen Names Christopher Sears, Ph.D., Architect of High-Value Molecular Diagnostics and Computational Biology Platforms, to Company's Scientific Advisory Board 3WaferGen Names Christopher Sears, Ph.D., Architect of High-Value Molecular Diagnostics and Computational Biology Platforms, to Company's Scientific Advisory Board 4Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 2Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 3Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 4Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 5Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 6Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 7Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 8Leading Vision Correction Experts in Trusted LASIK Surgeons Directory Educate Fellow Doctors at AAO Annual Meeting 9DIATHERIX Laboratories Presents at Homeland Security Conference 2
...ch Reveals Imaging with Siemens, Artis zeego Can I...ventional Radiologists, WASHINGTON, March 17 New...l Radiology,s (SIR) Annual Scientific Meeting in,W... interventional imaging,capability using advanced ...ww.siemens.com/healthcare ), to improve the value ...
... and SAN DIEGO, March 17 Even as investors,mainta...or, industry,stakeholders are facing tough decisio...he current credit crunch in the U.S., life science...cals and medical devices,continue to enjoy relativ...pared to other areas of the economy," said San Die...
...Calif., March 17 Immunosyn,Corporation (OTC Bulle... W.,Wentz, Ph.D., Chief Executive Officer and Chai...orated (Nasdaq: USNA ), was elected to serve as a...be filling a newly created,director position resul...,directors of Immunosyn., "To add to our Board of...
Other Biology Technology:New Robotic Imaging Technology Holds Promise of Improved Cancer Care 2New Robotic Imaging Technology Holds Promise of Improved Cancer Care 3New Robotic Imaging Technology Holds Promise of Improved Cancer Care 4Life Sciences Industry Reaches Crossroad Say Noted Pillsbury Attorneys 2Life Sciences Industry Reaches Crossroad Say Noted Pillsbury Attorneys 3Life Sciences Industry Reaches Crossroad Say Noted Pillsbury Attorneys 4USANA's CEO Myron W. Wentz, Ph.D. Has Been Elected to Serve on Immunosyn Corporation's Board of Directors 2USANA's CEO Myron W. Wentz, Ph.D. Has Been Elected to Serve on Immunosyn Corporation's Board of Directors 3USANA's CEO Myron W. Wentz, Ph.D. Has Been Elected to Serve on Immunosyn Corporation's Board of Directors 4
Cassette, Xba I from Takara Mirus Bio
Cassette, Hind III from Takara Mirus Bio
DryStrip aligners from GE Healthcare, formerly Amersham Biosciences
Cassette, Sal I from Takara Mirus Bio
Biology Products: