Navigation Links
Pacific Northwest trees struggle for water while standing in it
Date:7/25/2011

needed in the xylem to pull water higher and higher. But it turns out that freezing and thawing caused the most problems for water transport."

Studies such as this are important, the scientists said, to better understand how forests might respond to a warmer or drier climate of the future. And although this might imply that these conifers could be more resistant to drought than had been anticipated, the researchers said it's not that simple.

"If the climate warms, we might actually get more of these winter cycles of freezing and thawing," McCulloh said. "There's a lot of variability in the effects of climate we still don't understand.

"One of the most amazing things these trees can do is recover from these declines in conductivity by replacing the air bubbles with water," she said. "We don't understand how they do that at the significant tensions that exist at those heights. We're talking about negative pressures or tensions roughly three times the magnitude of what you put in your car tires."

When the field research on this study was done in 2009, the area actually experienced a historic heat wave during August when temperatures in the Willamette Valley hit 108 degrees. During such extreme heat, trees experienced some loss of hydraulic conductivity but largely recovered even before rains came in September. By contrast, greater loss of hydraulic conductivity was observed in the middle of winter.

The study was done at the Wind River Canopy Crane Research Facility, and published in the American Journal of Botany. The research was supported by the National Science Foundation.

"The commonly held view is that the summer months of the Pacific Northwest are extremely stressful to plants," the researchers wrote in their conclusion.

"Yet, our results indicated that the winter months are more stressful in terms of hydraulic function, and suggest that perhaps an inability to recover from increase in native
'/>"/>

Contact: Kate McCulloh
kate.mcculloh@oregonstate.edu
541-737-4208
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Brookhaven scientists take off for southeastern Pacific climate study
2. British scientists go cloud-hopping in the Pacific to improve climate predictions
3. Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions
4. Scientists achieve first tracking of salmon from headwaters in Rockies through Pacific to Alaska
5. Eastern Pacific tuna hang in the balance
6. Smithsonian puts tropical Eastern-Pacific shore fishes online
7. Smithsonian puts tropical eastern Pacific shore fishes online
8. Invasives threaten salmon in Pacific Northwest
9. Scientists urge world leaders to respond cooperatively to Pacific Ocean threats
10. Pacific Northwest forests could store more carbon, help address greenhouse issues
11. AAAS Pacific division scientific conference to meet in San Francisco Aug. 14 - 19
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2015)... Security of data and assets has ... organizations, telecommunications, hospitals, as well as individuals. Keys, ... used to prevent unauthorised access. Technological advancements resulted ... could gain access to secure premises after being ... devices and numeric codes. However, hackers also could ...
(Date:9/1/2015)... Calif. , Sept. 1, 2015  Automation ... travelers during airport passenger screening. This is the ... passenger screening process will become unintrusive. An assortment ... based on voluntary background investigations will transform the ... Frost & Sullivan, Global Airport Passenger Screening ...
(Date:8/31/2015)... Aug. 31, 2015 Research and Markets ( ... "Saudi Arabia Biomedical Sensors Market - Growth, Trends & ... The Saudi Arabia Biomedical Sensors market is estimated ... 3.64% over the period 2014-2020 The near ... the genetic formulation of each individual. These sensors can ...
Breaking Biology News(10 mins):Global Biometrics Spending Market in the Government Sector 2015-2019 2Global Biometrics Spending Market in the Government Sector 2015-2019 3The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 2The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 3The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 4Saudi Arabia Biomedical Sensors Market Report 2015 - Growth, Trends & Forecasts (2014-2020) 2
... in medicine. In the future, new tissue grown in a ... the place of damaged cells in the brain. Rather than ... and complicated scientific issues, scientists have been looking to adult ... stem cells are now being cultivated from various tissues in ...
... many serious diseases remain a mystery? In considering that ... School of Medicine has come up with a unified molecular ... may provide an answer. Reviewing findings from multiple ... and Molecular Medicine and Investigator with the Howard Hughes Medical ...
... Texas University of Texas Medical Branch at Galveston researchers ... which the Ebola Zaire virus infects cells a critical ... produced by the virus. Ebola produces severe and often ... close to 90 percent in some outbreaks. No vaccine or ...
Cached Biology News:Tel Aviv University researchers create new stem cell screening tool 2Do 68 molecules hold the key to understanding disease? 2Scientists uncover Ebola cell-invasion strategy 2
(Date:9/2/2015)... , Sep. 02, 2015 ... announced the addition of Jain PharmaBiotech,s new report ... Companies" to their offering. This ... on technologies and applications. The report starts with ... estimation of markets. Technologies include array comparative genomic ...
(Date:9/2/2015)... , September 2, 2015 Biovista ... winners of the 2015 BeHEARD science challenge, a global ... rare disease researchers, access to the latest life science ... drug repositioning and pathway analytics capability to support ... Foundation in the study of Niemann-Pick Disease Type A ...
(Date:9/2/2015)... 2, 2015 Veracyte, Inc. (NASDAQ: VCYT ... president and chief executive officer, will present at the ... 2015 at 10:30 a.m. ET in New ... audio webcast and subsequent replay may be accessed by ... available shortly after conclusion of the presentation and archived ...
(Date:9/2/2015)... ... 02, 2015 , ... Whitehouse Laboratories is excited to announce ... Resources upcoming educational seminar and training session on Extractable & Leachable testing. Featuring ... provide Updates & Case Studies on the Latest Compliance Implications of USP and ...
Breaking Biology Technology:Global Biochips and Microarrays Technologies, Markets and Companies Report 2015 with Market Size in 2014 and Projected Value for the Years 2019 and 2024 2Biovista Sponsors Wylder Nation Foundation's Research on Acid Sphingomyelinase Deficiency 2Veracyte to Present at Morgan Stanley Global Healthcare Conference 2Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 2Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 3
... DATATRAK International, Inc. (OTCQX: DATA), a technology and ... the clinical trials industry, today announced the addition ... Connect Partner Program.  The DATATRAK software suite complements ... processes using state-of-the-art clinical trial technology. ...
... TAIPEI, Taiwan, June 14, 2011 /PRNewswire-Asia/ -- TWi ... enrolled over 50% of the total 240 patients ... for the treatment of Type II Diabetes. The ... designed to evaluate the glycated hemoglglobin A1c (HbA1c) ...
... Twenty-two of America,s most promising scientists have been ... by The Pew Charitable Trusts.  The 2011 Pew Scholars ... recipients of the Albert Lasker Medical Research Award and ... of Scholars is related to many human diseases ranging ...
Cached Biology Technology:Research Dynamics Becomes DATATRAK Connect Partner 2Research Dynamics Becomes DATATRAK Connect Partner 3Positive Results from Phase IIa Study Pave Way for Phase IIb Trial of AC-201 for the Treatment of Type II Diabetes 222 of America's Most Promising Scientists Selected as 2011 Pew Scholars in the Biomedical Sciences 222 of America's Most Promising Scientists Selected as 2011 Pew Scholars in the Biomedical Sciences 322 of America's Most Promising Scientists Selected as 2011 Pew Scholars in the Biomedical Sciences 4
... use of small interfering RNA (siRNA) molecules ... interference (RNAi) pathway have generated tremendous interest ... siRNA for experimental use can be synthesized ... then transfected into the target cells in ...
... 12™ is an automated hybridization system for ... automates both the hybridization and post hybridization ... A single instrument can process up to ... and has multi-protocol software, enabling the user ...
... Uncover the biological data hidden in your samples ... manufacturing allows you to create your own microarray ... at your own pace and receive delivery of ... eArray is a secure, online array creation application ...
... the demands of the routine trace metal ... reliable, robust and simple to use instrumentation. ... the most challenging sample matrices found in ... to the toughest analytical challenges found in ...
Biology Products: