Navigation Links
Water hits and sticks: Findings challenge a century of assumptions about soil hydrology
Date:1/21/2010

CORVALLIS, Ore. Researchers have discovered that some of the most fundamental assumptions about how water moves through soil in a seasonally dry climate such as the Pacific Northwest are incorrect and that a century of research based on those assumptions will have to be reconsidered.

A new study by scientists from Oregon State University and the Environmental Protection Agency showed much to the surprise of the researchers that soil clings tenaciously to the first precipitation after a dry summer, and holds it so tightly that it almost never mixes with other water.

The finding is so significant, researchers said, that they aren't even sure yet what it may mean. But it could affect our understanding of how pollutants move through soils, how nutrients get transported from soils to streams, how streams function and even how vegetation might respond to climate change.

The research was just published online in Nature Geoscience, a professional journal.

"Water in mountains such as the Cascade Range of Oregon and Washington basically exists in two separate worlds," said Jeff McDonnell, an OSU distinguished professor and holder of the Richardson Chair in Watershed Science in the OSU College of Forestry. "We used to believe that when new precipitation entered the soil, it mixed well with other water and eventually moved to streams. We just found out that isn't true."

"This could have enormous implications for our understanding of watershed function," he said. "It challenges about 100 years of conventional thinking."

What actually happens, the study showed, is that the small pores around plant roots fill with water that gets held there until it's eventually used up in plant transpiration back to the atmosphere. Then new water becomes available with the return of fall rains, replenishes these small localized reservoirs near the plants and repeats the process. But all the other water moving through larger por
'/>"/>

Contact: Jeff McDonnell
jeff.mcdonnell@oregonstate.edu
541-737-8720
Oregon State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Can a drop of water cause sunburn or fire?
2. Glacial watersheds may contribute to oceanic food web
3. Lost water of the Napa Valley vineyards
4. Newly identified enzymes help plants sense elevated CO2 and could lead to water-wise crops
5. Lehigh University professor receives Astellas Award for arsenic groundwater remediation efforts
6. Canna can: Ornamental eliminates pollutants from stormwater runoff
7. Uniform analyses for clean drinking water in Europe
8. UGA researchers lead team in discovery involving devastating freshwater fish parasite, Ich
9. Just like old times: Generating RNA molecules in water
10. K-State program will give young professionals skills to protect water resources
11. Geologists studying groundwater arsenic levels in India empower Bengali women, children
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2014)... us, many backyard cooks are turning to more healthful ... low fat can sometimes mean low satisfaction. Now researchers ... in low-fat wieners that are made with olive oil ... ACS, Journal of Agricultural and Food Chemistry . ... consumers have come to expect just the right amount ...
(Date:7/9/2014)... Adlie penguins shows that the population is 3.79 ... previously estimated. Adlie penguins have long been considered ... the effects of climate change and fishing in ... imagery, researchers from Stony Brook University and University ... permits regular monitoring of Adlie penguins across their ...
(Date:7/9/2014)... of an economy driven by methane, the primary component of ... a production boom. It has poised the country as a ... doubts over just how climate-friendly it is, according to an ... weekly news magazine of the American Chemical Society. , In ... that when burned as a fuel to produce electricity, methane ...
Breaking Biology News(10 mins):New study finds that Adélie penguin population is on the rise 2New study finds that Adélie penguin population is on the rise 3
... (NYSE:JWa, JWb), a global provider of content and ... and scholarly research; professional development; and education, today ... Library. PDFs read using the ReadCube Web Reader ... and direct access to supplemental content, making it ...
... Colo., USA GSA Bulletin papers published online ... Canada, Mexico, Spain, the UK, and New Zealand. Multiple locations ... Canada, New Zealand, and Guatemala. Papers cover , ... region, USA;, 2. Tectonics, salt, and the fossil forests of ...
... ever wondered why, and how, shoals of fish are comprised of ... Ward, from the University of Sydney in Australia, and Suzanne Currie, ... of different sensory cues to locate shoal-mates, but they are able ... size as themselves. Using these cues, they can form a group ...
Cached Biology News:GSA Bulletin starts 2013 with 13 new papers published online ahead of print 2GSA Bulletin starts 2013 with 13 new papers published online ahead of print 3GSA Bulletin starts 2013 with 13 new papers published online ahead of print 4GSA Bulletin starts 2013 with 13 new papers published online ahead of print 5GSA Bulletin starts 2013 with 13 new papers published online ahead of print 6GSA Bulletin starts 2013 with 13 new papers published online ahead of print 7GSA Bulletin starts 2013 with 13 new papers published online ahead of print 8GSA Bulletin starts 2013 with 13 new papers published online ahead of print 9GSA Bulletin starts 2013 with 13 new papers published online ahead of print 10GSA Bulletin starts 2013 with 13 new papers published online ahead of print 11Nothing fishy about swimming with same-sized mates 2
(Date:1/15/2014)... , Jan. 15, 2014 ­ RedBrick Health ... behavior change technology, today announces that EmblemHealth , ... and wellness company, is now providing the RedBrick Compass ... coaching program, to all of its members. EmblemHealth is ...
(Date:1/15/2014)... Two champions of science, technology, engineering, ... an annual competition for middle and high school students ... STEM study. The competition presents students with real-world problems ... Aptitude, Mathematics, and Sciences is a program administered ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... throughput research solutions, today announced that Lupin Limited, one ... of Freeslate’s CM Protégé PharmD System for ... in Mumbai, India, is focused on a wide range ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
Breaking Biology Technology:EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2
... of The Kings Daughters (CHKD) is leading the clinical ... to develop a device to measure the precise temperature ... Health (NIH) grant stems from recent studies showing that ... the incidence of Cerebral Palsy, other neurological damage, and ...
... PALO ALTO, Calif., Aug. 31 Anacor Pharmaceuticals,announced today ... S-1 with,the Securities and Exchange Commission for a proposed ... of the shares in the proposed,offering are being sold ... be Morgan Stanley & Co.,Incorporated as sole book runner, ...
... company offers innovative casting, splinting and bracing ... Enova Medical Technologies,Inc. of St. Paul, ... Aspen,Colo., are pleased to announce the launch ... will develop and commercialize innovative orthopedic,support devices. ...
Cached Biology Technology:NIH grants $750,000 to develop device to determine temperature of neonate's brain 2Anacor Files Registration Statement for Initial Public Offering 2Enova Medical Launches Exos Corporation 2
... gasket slides/kit Gasket slide kit (1x 22K ... or Gasket slide kit ... disposable gasket slides offered in either 11K or 22K ... The gaskets are carefully fabricated and batch tested ...
... This CLS number is ... to easily match Cornings product ... yet, please order under the ... contact customer service for assistance. ...
... description: self locking design in ice/water ... new product number, created to easily ... no availability yet, please order under ... contact customer service for assistance. ID ...
... Oligo Microarray Kit (V2), 2 x ... characterize expression of many thousands of ... during important biological processes. Each microarray ... known ORFs from the S288C strain ...
Biology Products: