Navigation Links
Old-Growth Forests Dying Off in U.S. West
Date:1/22/2009

Tree deaths have doubled, and global warming may be the cause, experts say

THURSDAY, Jan. 22 (HealthDay News) -- Trees in old-growth forests in the Western United States are dying at twice the rate they were a few decades ago, and experts suspect regional warming is to blame.

The report, led by the U.S. Geological Survey (USGS), found that the increase in tree deaths has included trees in a variety of forests, elevations and sizes. Species have included pine, fir, hemlock and other coniferous trees. In addition, the rate of new tree growth has not changed, according to the report in the Jan. 23 issue of Science.

"If current trends continue, forests will become sparser over time, and average tree ages will decrease by half," study co-author Phillip van Mantgem, a USGS research ecologist, said during a teleconference Wednesday.

In the future, forests will store less carbon than they do now, van Mantgem said. "It introduces the possibility that Western forests could become net sources of carbon dioxide, further speeding up the pace of global warming," he explained.

In addition, fewer trees could result in a loss of habitat for animals that depend on old-growth forests, van Mantgem said, and there might also be an increased risk of forest fires, with increasing drought and more fallen trees.

To determine the causes of increased tree death, the researchers considered problems in the forest themselves, such as overcrowding. "Every way we cut the data and examined it, it looks like internal dynamics are not a significant source of the increase in mortality rates," Nathan Stephenson, a USGS research ecologist and co-author of the study, said during the teleconference.

The researchers also looked at external causes, such as air pollution. However, they concluded that these were unlikely causes of the troubling trend, Stephenson said.

"What we were left with was temperature," he
'/>"/>

Copyright©2009 ScoutNews,LLC.
All rights reserved

Page: 1 2 3

Related medicine news :

1. Out of the woods: Physicians get urban disaster training in forests, gorges and waters
2. UC San Diego scientists developing brain imaging methods for studying natural human behavior
3. Finding Grace on a Less Traveled Road: A Cancer Doctor Reflects on Living and Dying
4. Moores UCSD Cancer Center studying novel leukemia vaccine for high-risk patients
5. Penn researchers use honeybee venom toxin to develop a new tool for studying hypertension
6. Mental Skills Can Decline Years Before Dying
7. Medical Records Institute Unveils Platform for Studying Cell Phone Applications in Healthcare
8. USPTO Issues Patent Embodying Methodologies for Abating a Broad Range of Allergens, Pathogens, Viruses, Bacteria, Odors and Volatile Organic Compounds.
9. New KLRI Reports Shows Longevity Science Moving Beyond Studying the Obvious to the Downward Spiral Paradigm in the Aging Process
10. Hispanic Workers Dying at Higher Rates Than Others
11. Award Winning Vanity Fair Contributing Editor Judy Bachrach Launches TheCheckoutLine.org - An Advice Column on Dying Well
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/28/2015)... MO (PRWEB) April 28, 2015 The ... 2015 from 5:00 to 8:00 pm at the Sheraton Colonial ... than 50 hospitals, clinics and groups with career opportunities will ... represented. Attendees will enjoy free hors d’oeuvres and raffle prize ... PracticeMatch says “Boston is an ideal location to hold ...
(Date:4/28/2015)... (PRWEB) April 28, 2015 The west ... are among the top areas that healthcare professionals searched ... aureusmedical.com, during the month of March 2015. Data ... in travel nurse jobs , physical therapy ... within nursing and allied health fields. , ...
(Date:4/28/2015)... Foot and Ankle Specialists of the ... ( Annapolis and Clarksville Divisions ) was recently ... Maryland Podiatric Medical Association meeting on April 15, 2015. ... 1992 with a Bachelor of Arts in Life Sciences. ... soccer, track and cross-country. He then attended the New ...
(Date:4/27/2015)... VA (PRWEB) April 28, 2015 Medical ... **Presented by FDAnews and Ombu Enterprises**, June 16-17, 2015 ... an FDA inspector came to a facility today, would ... , If the answer is "maybe" or "no" … ... Enterprises and FDAnews have a solution. , Take ...
(Date:4/27/2015)... April 27, 2015 A new type of ... May 9. Science on Tap at the Science Museum of ... brews, but adds science hops for a bold, new flavor. ... trucks and serves up the science behind these frothy beverages. ... a first-hand look at the ingredients that go into beer ...
Breaking Medicine News(10 mins):Health News:PracticeMatch to Host Physician Career Fair at Sheraton Colonial Boston North Hotel on May 6, 2015 2Health News:PracticeMatch to Host Physician Career Fair at Sheraton Colonial Boston North Hotel on May 6, 2015 3Health News:Hot States for Medical Careers: Healthcare Staffing Agency Aureus Medical Releases Online Search Results 2Health News:Foot and Ankle Specialists of the Mid-Atlantic, LLC Podiatrist Receives Maryland Podiatric Medical Association Outstanding Service Award 2Health News:FDAnews Announces: Medical Device Design Control: Implementing an Approach That Works, June 16-17, Chicago, IL 2Health News:FDAnews Announces: Medical Device Design Control: Implementing an Approach That Works, June 16-17, Chicago, IL 3Health News:FDAnews Announces: Medical Device Design Control: Implementing an Approach That Works, June 16-17, Chicago, IL 4Health News:Science on Tap at the Science Museum of Virginia 2
... KUNMING, China, Nov. 16 /PRNewswire-Asia-FirstCall/ -- ... Shenghuo" or,the "Company"), which is engaged in the research, ... products,in the People,s Republic of China ("PRC"), today reported ... 2009. , , Third Quarter 2009 ...
... resonance images (MRI) of patients diagnosed with multiple sclerosis ... more aggressive, and causes more brain lesions, than MS ... have reported. , Interestingly, however, patients with pediatric-onset MS ... MS cases -- develop disabilities at a slower pace ...
... to treatment for chlamydia, gonorrhea, syphilis is ,imperative, expert ... girls aged 15 to 19 accounted for the largest ... gonorrhea cases in the United States in 2008, followed ... annual federal report released Monday. , The researchers also ...
... ... to grant an ill child’s dream to go to Disneyland , ... (PRWEB) November 16, 2009 -- LeapFish has ... that dream come true. Tweet-a-Cause, a social media fundraising initative, will give Twitter users the ...
... 16 The nation,s premier public health agency, the Centers ... contract with Georgia Power to purchase renewable energy for its ... http://www.newscom.com/cgi-bin/prnh/20050216/CLW066LOGO ) , The purchase of more than ... organization,s annual kilowatt-hour consumption, will make the CDC Georgia Power,s ...
... A powerful new breast cancer treatment could result ... cancer,s hallmark wild growth with another that blocks a ... part of itself, researchers say. While they are ... called histone deacetylase inhibitors, or HDAC inhibitors, also increase ...
Cached Medicine News:Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 2Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 3Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 4Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 5Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 6Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 7Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 8Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 9Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 10Health News:China Shenghuo Reports Unaudited Financial Results for the Third Quarter of 2009 11Health News:MS is more aggressive in children but slower to cause disability than in adults 2Health News:MS is more aggressive in children but slower to cause disability than in adults 3Health News:Teen Girls at Higher Risk for STDs: Report 2Health News:LeapFish and Make-a-Wish Foundation Join Forces to Raise $10,000 and Tweet an Ill Child's Wish True 2Health News:Georgia Power, Centers for Disease Control and Prevention Forge Green Energy Partnership 2Health News:New combination therapy could deliver powerful punch to breast cancer 2
(Date:4/28/2015)... , April 28, 2015 Anteo Technologies ... powerful new tools developed with their patented Mix&Go™ ... coupling methods, helping to improve medical devices and ... Increasingly complex multifactorial diagnosis of cancer ... limits. It is restricted to measure only a ...
(Date:4/27/2015)... , April 27, 2015  Consumer Watchdog today ... bill that requires prescribers to check a state ... like OxyContin and other opioids – to help ... deaths. SB 482, authored by Sen. ... , will require prescribers to check Controlled ...
(Date:4/27/2015)... April 27, 2015 NxStage Medical, Inc. (Nasdaq: ... announced that Jeffrey H. Burbank , Chief Executive Officer, ... in Boston, MA on Thursday, May ... webcast of the event will be made available at ... About NxStage NxStage Medical, Inc. (Nasdaq: ...
Breaking Medicine Technology:Faster Detection of Disease: Anteo is Transforming The Way Scientists Work with Luminex(R) xMAP(R) 2Faster Detection of Disease: Anteo is Transforming The Way Scientists Work with Luminex(R) xMAP(R) 3Consumer Watchdog Praises Passage of Bill that Requires Physicians Check Prescription Drug Database Before Prescribing Powerful, Addictive Medications 2Consumer Watchdog Praises Passage of Bill that Requires Physicians Check Prescription Drug Database Before Prescribing Powerful, Addictive Medications 3NxStage to Present at the 40th Annual Deutsche Bank Securities Health Care Conference 2
... ,SARAH, - a French national collaborative randomized controlled ... sorafenib in advanced hepatocellular carcinoma is now open ... a new randomized controlled trial to directly compare ... (SIR-Spheres ® microspheres; Sirtex Medical Limited, Australia) ...
... 2, 2012  On February 2, at the Late-Breaking Science Session ... the TREVO Study ( T hrombectomy ... O cclusions in acute ischemic stroke). This ... clot-removing stent retriever technology. Sixty patients were enrolled by seven ...
Cached Medicine Technology:New Study of Primary Liver Cancer Seeks to Enroll 400 French Patients 2New Study of Primary Liver Cancer Seeks to Enroll 400 French Patients 3New Study of Primary Liver Cancer Seeks to Enroll 400 French Patients 4Stryker Presents Results of the TREVO Prospective Clinical Study at the International Stroke Conference 2
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
Medicine Products: