Navigation Links
Study finds hemlock trees dying rapidly, affecting forest carbon cycle
Date:2/26/2009

Otto, NC New research by U.S. Forest Service Southern Research Station (SRS) scientists and partners suggests the hemlock woolly adelgid is killing hemlock trees faster than expected in the southern Appalachians and rapidly altering the carbon cycle of these forests. SRS researchers and cooperators from the University of Georgia published the findings in the most recent issue of the journal Ecosystems.

"The study marks the first time that scientists have tracked the short-term effects hemlock woolly adelgid infestations are having on the forest carbon cycle," said Chelcy Ford, SRS ecologist and co-author of the paper.

Eastern hemlock, a keystone species in the streamside forests of the southern Appalachian region, is already experiencing widespread decline and mortality because of hemlock woolly adelgid (a tiny nonnative insect) infestation. The pest has the potential to kill most of the region's hemlock trees within the next decade. As a native evergreen capable of maintaining year-round transpiration rates, hemlock plays an important role in the ecology and hydrology of mountain ecosystems. Hemlock forests provide critical habitat for birds and other animals; their shade helps maintain the cool water temperatures required by trout and other aquatic organisms in mountain streams.

Scientists conducted the study in mixed hardwood forests along the edges of two streams at the SRS Coweeta Hydrologic Laboratory, a 5,600-acre research facility and experimental forest in the Nantahala Mountain Range of western North Carolina.

Researchers compared rates of decline of adelgid-infested hemlock trees to a small number of girdled (severely wounded the bark of a tree to initiate tree mortality) trees that were not infested. Researchers tracked changes in the carbon cycle of these hemlock stands over a 3-year period. Scientists measured components of the forest carbon cycle including tree growth, leaf litter and fine roo
'/>"/>

Contact: Stevin Westcott
swestcott@fs.fed.us
828-259-0512
Southern Research Station - USDA Forest Service
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evolutionary biologist will study HIV with grant from AIDS research foundation
2. Study examining role of genetics and environment in type 1 diabetes
3. UNH researchers studying spiny dogfish, Gulf of Maines mini shark
4. Lower increases in global temps could lead to greater impacts than previously thought, study finds
5. NC State study finds genes important to sleep
6. Study links seabird deaths to soap-like foam produced by red-tide algae
7. Study finds most wars occur in Earths richest biological regions
8. Study finds life-saving trend among seagulls
9. The Earth Observatory of Singapore devoted to the study of earth sciences officially opens
10. Press statement on new CDC MRSA study from SHEA president
11. Historical photographs expose decline in Floridas reef fish, new Scripps study finds

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/3/2009)...the U.S. Department of Energy,s (DOE) Brookhaven N...dian Institute of Science has made a major step in...formation in DNA that is necessary to carry out im...hed in the December 1, 2009 edition of Nature Str...roteins responsible for interacting at specific si...
(Date:12/2/2009)...engthen the evidence that people who smoke cigaret...isk for developing colorectal cancer, even after a...es one more reason not to smoke, or to quit as soo..., M.D., M.S., vice president emeritus, epidemiolog... Society. "Colorectal cancer should be added to th...
(Date:12/2/2009)...and smoke for a prolonged period of time and in hi..., even in women who never smoked cigarettes themse...de-stream smoke could increase risk of breast canc..., Ph.D., senior research scientist at the Northern...e no single epidemiologic study can answer the que...
Breaking Biology News(10 mins):Grooving down the helix 2Grooving down the helix 3Cigarette smoking increases colorectal cancer risk 2Exposure to secondhand cigarette smoke over a lifetime increased breast cancer risk later in life 2Japanese Cancer Patients Will Have Access to Compensator Based IMRT with Opening of decimal Inc Office in Tokyo and Hiring of Key Personnel 5999 1Japanese Cancer Patients Will Have Access to Compensator Based IMRT with Opening of decimal Inc Office in Tokyo and Hiring of Key Personnel 5999 2Religion and medicine 3A Sometimes a healing prescription 60718 1Religion and medicine 3A Sometimes a healing prescription 60718 2Genomic research will enable greener cleanup of military explosive test sites 10638 1Genomic research will enable greener cleanup of military explosive test sites 10638 2
... , Restless legs syndrome is a common problem in c...tes and the United Kingdom, according to a new rep...Nearly 2 percent of children aged 8 to 17 are affe...ence moderate to severe symptoms, including sleep ... in the August issue of the journal Pediatrics. , ...
... Researchers from the University of Minnesota Med...apolis VA Medical Center have identified a noninva...seases. And its as simple as staring at a point of...ressful, painless, and objective diagnosis for bra...tiveness of different treatments for these disease...
... BOSTONCarnegie Mellon University chemists have s...ventually help scientists develop drug therapies t... and Alzheimers disease. Using intensive theoretic... researchers have modeled the initial molecular ch...te docks with a receptor on a neuron, which sets i...
Other Biology News:Restless legs syndrome affects nearly 2 percent of US/UK children 2Restless legs syndrome affects nearly 2 percent of US/UK children 3U of MN researchers discover noninvasive diagnostic tool for brain diseases 2Carnegie Mellon scientists investigate initial molecular mechanism that triggers neuronal firing 2
(Date:12/1/2009)...omon announced that he has joined Carolina Eyecare...e at www.DrKerrySolomon.com , which was developed...oven LASIK, lens implant, and cataract surgery exp... substantial contributions to improving vision cor...Surgeons, which screens LASIK surgeons based upon ...
(Date:12/1/2009)...ewswire/ -- Reportlinker.com announces that a new ...ue: ,, Chromium - Global Market Trends ,...-Global-Market-Trends.html ,, Worldwide demand... steel, while growth in aerospace and industrial g... chromium metal. Environmental constraints and rap...
(Date:12/1/2009)...ewswire/ -- Reportlinker.com announces that a new ...ue: ,, Emerging Clinical Trial Locations - Eas...thcare and regulatory environment ,, http://w...al-Locations---Eastern-Europe-Market-dynamics-and-....html ,, Over the last decade pharmaceutical a...
(Date:12/1/2009)...c. 1 To address the emergence of t...otential, a group of individuals and companies ann...stry Association (SynBIA) in Cambridge, Massachuse...rovide a forum for individuals and commercial inte...ortunities and its challenges, and advocate for it...
Breaking Biology Technology:Charleston LASIK and Cataract Expert Dr. Kerry Solomon Opens New Practice and Launches DrKerrySolomon.com 2Charleston LASIK and Cataract Expert Dr. Kerry Solomon Opens New Practice and Launches DrKerrySolomon.com 3Charleston LASIK and Cataract Expert Dr. Kerry Solomon Opens New Practice and Launches DrKerrySolomon.com 4Charleston LASIK and Cataract Expert Dr. Kerry Solomon Opens New Practice and Launches DrKerrySolomon.com 5Charleston LASIK and Cataract Expert Dr. Kerry Solomon Opens New Practice and Launches DrKerrySolomon.com 6Reportlinker Adds Chromium - Global Market Trends 2Reportlinker Adds Chromium - Global Market Trends 3Reportlinker Adds Chromium - Global Market Trends 4Reportlinker Adds Chromium - Global Market Trends 5Reportlinker Adds Chromium - Global Market Trends 6Reportlinker Adds Chromium - Global Market Trends 7Reportlinker Adds Chromium - Global Market Trends 8Reportlinker Adds Chromium - Global Market Trends 9Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 2Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 3Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 4Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 5Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 6Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 7Reportlinker Adds Emerging Clinical Trial Locations - Eastern Europe: Market Dynamics and the Changing Healthcare and Regulatory Environment 8Industry Forms Association to Address Opportunities and Challenges of Synthetic Biology 2
...Wisconsin governor are playing a game of one- upsm... Mark Green ,s turn to up the ante after Gov. Jim...the state,s minimum markup law for ethanol. , ,Gre... for a comprehensive repeal of the minimum markup,...al the controversial law. Instead, he called on th...
...rge Healthcare company producing imaging software... Spanish , a Spanish language version of the compa...005, Workstation is a downloadable radiology softw...ion, and CD burning of digital medical images. Thi... and healthcare providers transition from film to ...
...ic development efforts here are taking shape with ...kers. , ,The state is giving Wisconsin Indianhead...th $152,175 to work with local businesses. With th...portunities to improve the skills of their workers...y management, and computers. , , Gov. Jim Doyle s...
Other Biology Technology:Green doesnt up the ante on markup law 2Superior receives funds for technical training 2
Rabbit Anti-Rat 5-HIAA Polyclonal Antibody, Unconjugated from ImmunoStar, Inc.
NuParaffin Kit from Exalpha Biologicals, Inc.
Anti-hamster Ig HRP detection kit from BD Biosciences Pharmingen
MitoLight® Mitochondrial Apoptosis Detection Kit from Upstate
Biology Products: