Navigation Links
Drought and rising temperatures weaken southwest forests
Date:12/13/2010

ALBANY, Calif.Forests in the southwestern United States are changing and will face reduced growth if temperatures continue to rise and precipitation declines during this century, according to a study conducted by a team of scientists from the U.S. Forest Service; University of California, Santa Barbara; U.S. Geological Survey; and University of Arizona. Their findings were released today in the Proceedings of the National Academy of Sciences (PNAS) special issue on climate change.

Using tree-ring data and climate models, the team determined that rising temperatures and declining precipitation has led to an overall lower fitness of forests in the Southwest. This weakening of forest health has led to the trees' inability to survive wildfires and stave off bark beetle attacks. Fire and bark beetles caused high levels of mortality in 14-18 percent of forest areas in the Southwest, according to the scientists, who examined the tree rings of pion pine, ponderosa pine and Douglas fir.

"These results have been observed previously on a case-by-case basis, but our demonstration of the pervasive effects of warming and drought should better enable water and land managers to prepare for climate adaptation in coming decades," says Connie Millar, a research climate ecologist with the U.S. Forest Service's Pacific Southwest Research Station, who co-authored the study.

Scientists analyzed annual tree-ring width data from 853 tree populations located throughout the continental United States. Of those, 235 samples represented trees located in Arizona and New Mexico. These samples were compared to each other in order to identify trends on how certain climatic conditions affect tree growth.

The projected continuing decline of these forests could mean significant ecosystem changes if the Southwestern forests continue to be impacted by wildfires and insect attacks. Drier and hotter climate conditions will continue to favor shrublands,
'/>"/>

Contact: Sherri Eng
sleng@fs.fed.us
510-559-6327
USDA Forest Service, Pacific Southwest Research Station
Source:Eurekalert

Page: 1 2

Related biology news :

1. UMD to lead $5 million NSF-funded research partnership to develop drought-tolerant canola crops
2. Ocean conditions likely to reduce Colorado River flows during this winters drought
3. New VARI findings next step to growing drought-resistant plants
4. Winter drought stress can delay flowering, prevent fruit loss in orange crops
5. Growing drought-tolerant crops inching forward
6. Plant scientists move closer to making any crop drought-tolerant
7. Drought drives decade-long decline in plant growth
8. Common PGR helps creeping bentgrass weather drought
9. Plant hormone increases cotton yields in drought conditions
10. UC Riverside to host 3-day international meeting on drought
11. Genes for drought-tolerance, aflatoxin may mingle to boost corn production
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/18/2014)... patients with undiagnosed, suspected genetic conditions, a certain type ... molecular diagnostic yield than traditional molecular diagnostic methods, according ... study is being released to coincide with the American ... which sequences the protein­coding region of the genome (the ... a cell or organism), has been rapidly applied in ...
(Date:10/17/2014)... is available in German . ... sperms every day in order to reproduce? And why are ... topic of the latest issue of the research journal ... evolutionary biologist Steven Ramm from Bielefeld University Bielefeld has compiled ... not unusual for a female to copulate with several males ...
(Date:10/17/2014)... German . ... When treating overdoses, doctors are often limited to supportive therapy ... is a combination of drugs involved. So what can be ... grandmother,s pills? ETH professor Jean-Christophe Leroux from the Institute of ... to this question. "The task was to develop an agent ...
Breaking Biology News(10 mins):Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Sperm wars 2Emergency aid for overdoses 2Emergency aid for overdoses 3
... volcanic eruptions shows an unexpected connection with jet engines. ... Diego speeded up the recorded sounds from two volcanoes ... engines. These new research findings provide scientists with a ... eruptions. Infrasound is sound that is lower in frequency ...
... Researchers have identified a gene that controls the rapid ... all blood cell types -- a discovery that could ... leukemia and other blood cancers, in which blood cells ... the mechanisms of this gene, the scientists uncovered evidence ...
... April 8, 2009 -- Investigators at Burnham Institute for ... the total protein complement (proteome) in Schizosaccharomyces pombe ... Brill, Khatereh Motamedchaboki, Ph.D. and lead investigator Dieter Wolf, ... proteins in the organism, using an array of sophisticated ...
Cached Biology News:Study compares sound from exploding volcanoes with jet engines 2Scientists identify key gene that protects against leukemia 2Scientists identify key gene that protects against leukemia 3
(Date:10/20/2014)... Texas (PRWEB) October 20, 2014 ... announced that a team from Iowa State University won ... design contest. Using a Convey HC-2ex, the team’s solution ... 14 times faster than the second place finisher. , ... world embarked upon the month long challenge, using a ...
(Date:10/20/2014)... BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") today announced four ... million and provides a good start to Q4.  The orders are ... and one in the Middle East . ... said Peter Bruijns , President & CEO. "Total bidding activity ... they have been for any complete year since the company has ...
(Date:10/20/2014)... GAITHERSBURG, Md. , Oct. 20, 2014  GenVec, Inc. ... Zola P. Horovitz , Ph.D., from its board of ... GenVec board in August 2003, and served as its chairman ... also served on the Nominating and Corporate Governance and Audit ... Zola for more than a decade of dedicated service to ...
(Date:10/20/2014)... October 20, 2014 OncLive® ... Kimmel Cancer Center at Thomas Jefferson University has ... Through the Strategic Alliance Partnership program, the Sidney ... collaborate to raise awareness of the Center’s cutting-edge ... other projects. Clinicians and other health care professionals ...
Breaking Biology Technology:Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3Zola P. Horovitz To Retire From GenVec Board 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3
... Cell Through In Vivo ... Imaging-, ... ) today introduced Bioware(R) Ultra cell lines,a range of ultra bright light ... cell lines are,10 to 100 times brighter than cell lines created using ...
... Oncolytics Biotech Inc.,(TSX: ONC, NASDAQ: ONCY) announced that ... Nemours Center for Childhood Cancer Research entitled,"Radiation in ... at the American Association for Cancer Research (AACR),Annual ... Diego, California from,April 12-16, 2008., "The combination ...
... Sign Manufacturing and Distribution Agreement, GURGAON, ... Ranbaxy,Pharmaceuticals Inc. (RPI), a wholly owned subsidiary ... it has reached several,agreements with AstraZeneca. Two ... third agreement pertains to Omeprazole 40mg,tablets, and ...
Cached Biology Technology:Increased Light Leads to Early Detection: Caliper Life Sciences Introduces Bioware(R) Ultra Cancer Cell Lines 2Increased Light Leads to Early Detection: Caliper Life Sciences Introduces Bioware(R) Ultra Cancer Cell Lines 3Oncolytics Biotech Inc. Collaborators Present Reovirus Research for Pediatric Sarcomas at AACR Annual Meeting 2Ranbaxy and AstraZeneca Reach Agreement in Esomeprazole Patent Litigation 2Ranbaxy and AstraZeneca Reach Agreement in Esomeprazole Patent Litigation 3
... demands of the routine trace metal analytical ... robust and simple to use instrumentation. The ... most challenging sample matrices found in the ... the toughest analytical challenges found in the ...
... Do you need to make your strain ... efficiency? Take advantage of Lucigen’s unrivalled expertise ... Competent Cell Service offers: Chemically ... efficiencies Fast turnaround ...
Procollagen type I C-terminal propeptide (human, PICP)...
... in Microarrays: Biomedical Photometrics Inc. (Waterloo, Ontario, ... Germany) have collaborated to develop a fluorescence ... The DNAscope AT is based on ... AT automatically reads up to six ArrayTubes ...
Biology Products: