Navigation Links
Invading weed threatens devastation to western rangelands
Date:11/11/2010

CORVALLIS, Ore. A new field study confirms that an invasive weed called medusahead has growth advantages over most other grass species, suggesting it will continue to spread across much of the West, disrupt native ecosystems and make millions of acres of grazing land almost worthless.

The research, by scientists from Oregon State University and the Agricultural Research Service, was one of the most comprehensive studies ever done that compared the "relative growth rate" of this invasive annual grass to that of other competing species in natural field conditions.

It found that medusahead has a faster growth rate, a longer period of growth and produced more total biomass even than cheatgrass another invading species that is a major problem in its own right, but not as devastating as medusahead.

"Medusahead is now spreading at about 12 percent a year over 17 western states," said Seema Mangla, a researcher in the OSU College of Forestry. "Once established, it's very hard to get rid of. It displaces native grasses and even other invasive species that animals can still eat. Unless we do more to stop it, medusahead will take over much of the native grassland in the West.

"This is a devil species," she said.

Research is identifying some other grass species, including crested wheatgrass and Sandberg's bluegrass, that may be able to compete with medusahead, reduce its spread and preserve the grazing value of lands, Mangla said. They are also studying new ways of restoring medusahead-infested areas. But so far, medusahead has received very little attention compared to other threats such as cheatgrass, even though it ultimately poses a far greater threat to ecosystems across the West.

Cheatgrass is a serious problem on more than 50 million acres, Mangla said, but grazing animals can still eat it. The new study makes it clear that cheatgrass and native grasses may all eventually be replaced by medusahead, which elimin
'/>"/>

Contact: Seema Mangla
seema.mangla@oregonstate.edu
541-737-8475
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Barrier in mosquito midgut protects invading pathogens
2. Researchers examine plants ability to identify, block invading bacteria
3. Fish fend off invading germs with an initial response similar to the one found in people
4. Plant protein doorkeepers block invading microbes, study finds
5. Plant protein doorkeepers block invading microbes, study finds
6. How algae enslavement threatens freshwater bodies described by Hebrew University researcher
7. Oil spill threatens toothy marine predator that is cultural and historic icon
8. Climate threatens trout and salmon
9. Deadly fungus threatens 9 bat species in Ga., Ky., N.C., S.C. and Tenn., expert says
10. Global warming threatens plant diversity
11. A second hydrocarbon boom threatens the Peruvian Amazon
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/23/2014)... The successful rise and fall of an athlete,s moving body ... tendons, putting the many angles and intersecting planes literally ... joint to the test. But it,s more than just a ... devastating of sports injuries: the ACL or anterior cruciate ligament ... sits at the center of the knee joint and ...
(Date:9/23/2014)... A multidisciplinary team at the University of Wisconsin-Madison and ... more affordable way to screen for neural toxins, helping ... National Institutes of Health (NIH) announced today that the ... support to continue the promising work as part of ... will receive approximately $7 million over the three-year project. ...
(Date:9/23/2014)... award funds to support the next phase of its ... of predicting drug safety and effectiveness. Researchers will collaborate ... chips and combine them into an integrated system that ... Led by the National Center for Advancing Translational Sciences ... million in 2014 with additional support over the remaining ...
Breaking Biology News(10 mins):Does size matter? MRI imaging sheds light on athletes most at risk for severe knee injury 2Does size matter? MRI imaging sheds light on athletes most at risk for severe knee injury 3UW-Madison team developing 'tissue chip' to screen neurological toxins 2UW-Madison team developing 'tissue chip' to screen neurological toxins 3NIH funds next phase of Tissue Chip for Drug Screening program 2NIH funds next phase of Tissue Chip for Drug Screening program 3NIH funds next phase of Tissue Chip for Drug Screening program 4
... just a single island in the remote South Pacific, is ... also one of the oldest flowering plants, having branched off ... Indiana University, with the U.S. Department of Energy Joint Genome ... Research for Development in New Caledonia, have determined a remarkable ...
... Ven, Department of Molecular Biology and Genetics and the ... microRNA-128 just published in Science . In the ... amount of microRNA-128 in specific neurons that react to ... in these neurons in neonatal mice, it results in ...
... a cloudless day in Dangriga, a coastal city in southern ... wall of their sun-strewn lab is lined with the usual ... tubes. Swathed in purple gloves, they measure samples, mix gels ... usual class this is not. It is part of ...
Cached Biology News:A gluttonous plant reveals how its cellular power plant devours foreign DNA 2A gluttonous plant reveals how its cellular power plant devours foreign DNA 3New research provides insight into epilepsy 2Beyond Mendel 2Beyond Mendel 3Beyond Mendel 4
(Date:9/23/2014)... September 23, 2014 Erlab , ... personnel since 1968 and Burdinola, supplier of laboratory furniture ... new filtered fume hood. , By integrating ... hood, Burdinola will now offer an innovative solution utilizing ... range of chemicals, best-in-class detection technology, and communication for ...
(Date:9/23/2014)... , Sept. 23, 2014 ... the "Proteomics Markets for Research and IVD ... Technologies)" report to their offering. ... for proteomics applications, both in their research use ... proteins, including the study of the structure and ...
(Date:9/23/2014)... (PRWEB) September 23, 2014 For the fifth ... Inc. 500|5000 list of the fastest-growing companies. , “We’re ... acknowledged yet again by Inc. Magazine,” ExakTime CEO Tony Pappas ... list by posting a three-year growth rate of 61 percent ... that time by more than 40 percent. , Pappas cited ...
(Date:9/23/2014)... 23, 2014 Follow us ... steady popularity the world over, due to its ... in the marketplace is expected to come from ... developing countries. Several sub-Saharan countries in the African ... already implemented genetically engineered crop production strategies. Rising ...
Breaking Biology Technology:Erlab Partners with Burdinola to Deliver an Innovative Filtered Fume Hood 2Proteomics Markets for Research and IVD Applications (Mass Spectrometry, Chromatography, Microarrays, Electrophoresis, Immunoassays, Other Technologies) 2Proteomics Markets for Research and IVD Applications (Mass Spectrometry, Chromatography, Microarrays, Electrophoresis, Immunoassays, Other Technologies) 3Proteomics Markets for Research and IVD Applications (Mass Spectrometry, Chromatography, Microarrays, Electrophoresis, Immunoassays, Other Technologies) 4ExakTime Makes Inc. 5000 List for the Fifth Time 2Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 2Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 3Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 4
... , SILVER SPRING, Md. , Feb. ... announced today that it will release its fourth quarter and ... February 16, 2010 . , United Therapeutics will host a ... 9:00 a.m. Eastern Time .  The teleconference is accessible ...
... Ind. , Feb. 9 The American Psychiatric Association ... to prepare and manage all industry-supported symposia (ISS) programming at its ... 22-26, 2010 . , CME Enterprise will manage all elements ... partnership with the APA. , "It is a tremendous honor ...
... , , , , , , LEUVEN, ... - Paper Examines the Potential of Microplasmin to Improve the Treatment,of ... ThromboGenics NV (Euronext Brussels: THR), a biopharmaceutical company,focused on the discovery ... today that the positive,microplasmin Phase II trial results, evaluating the product,s efficacy ...
Cached Biology Technology:CME Enterprise Named to Manage All Industry-Supported Symposia at 2010 APA Annual Meeting 2ThromboGenics - Positive Microplasmin Phase II Data Published in Ophthalmology 2ThromboGenics - Positive Microplasmin Phase II Data Published in Ophthalmology 3ThromboGenics - Positive Microplasmin Phase II Data Published in Ophthalmology 4
The PROTEAN II slab gel casting stand is a component of the PROTEAN II XL and xi casting apparatus. It is supplied with gaskets....
... The Dyad Disciple thermal cycler is a ... may also be operated independently, using a ... of interchangeable Alpha units (sample-holder, heat-pump assemblies), ... as the Chromo4 real-time detector. Peltier heat ...
...
I-Ab MHC Class II...
Biology Products: