Navigation Links
Land management options outlined to address cheatgrass invasion
Date:5/12/2013

Such gaps could serve as a valuable "early warning indicator" and allow for management approaches that could help conserve and restore the land.

Cheatgrass threatens vast regions of the American West, especially the Great Basin in Nevada and surrounding states. These are areas which were once carpeted by millions of acres of native sagebrush, perennial bunchgrasses and associated wildlife that had evolved with little herbivore pressure. Cheatgrass displaces native grasses and wildlife, can increase fire frequency and ultimately cause an irreversible loss of these native shrub-steppe communities.

This also has grazing implications: cheatgrass is a short-lived annual grass that dries out quickly and provides lower quality forage for much of the year, compared to perennial bunchgrasses.

"Cheatgrass changes the fire regime, and as it spreads, can reach a tipping point," said Michael Reisner, now an assistant professor at Augustana College who led this study as a doctoral student at OSU.

"After you cross that threshold, a major rangeland fire will come through that takes out the sagebrush, and in most cases the native ecosystem never recovers," Reisner said. "Many of the plant and animal species that were there can disappear, mostly replaced by cheatgrass that offers poor forage for cattle."

In a more resistant system, abundant native bunchgrasses can limit the size and connectivity of gaps, which minimizes the water and nutrients available to cheatgrass. Using data from 75 study sites, researchers found that high levels of cattle grazing were associated with reduced bunchgrass cover, with wider and more connections between the gaps that provided an opportunity for cheatgrass to invade.

Cattle trampling also appeared to disturb biological soil crust that offers a second defensive barrier against cheatgrass, and further speeds the invasion. Impacts are greater on the drier and warmer sites within this region.

'/>"/>
Contact: Paul Doescher
paul.doescher@oregonstate.edu
541-737-6583
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. New advances in the management of patients with cirrhosis
2. Ecology, economy and management of an agro-industrial Amazon frontier
3. European Guidance for the diagnosis & management of osteoporosis in postmenopausal women
4. Risk management in fish: How cichlids prevent their young from being eaten
5. Annual Urban Pest Management Conference set for March 26
6. Launched the Saudi Aramco-KAIST CO2 Management Center in Korea
7. Report: Water and Agriculture in Canada: Towards Sustainable Management of Water Resources
8. Preventing chronic pain with stress management
9. Science synthesis to help guide land management of nations forests
10. Scientists develop improved fire management tools for Africas savannas
11. Studying bed bug actions for new management tactics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/3/2015)... March 3, 2015 Cryoport, Inc. ... advanced cryogenic logistics solutions for the life ... cells, cell lines, clinical research organizations, vaccine ... announced the expansion of its relationship with ... ("Fred Hutch") Clinical Research Division with the ...
(Date:3/2/2015)... HUNTSVILLE, Ala. , March 2, 2015 /PRNewswire/ ... transaction processing. Data protection company Tharon Rankins Enterprises ... product that provides an ultra-safe way for businesses ... as their financial transactions. Beconux ... by Tharon Rankins Enterprises. Functioning similarly to an ...
(Date:2/25/2015)... Ark. , Feb. 25, 2015  ABC ... and billing in the Health and Fitness Industry, ... well as to MYiCLUBonline.  The latest upgrade includes ... the inclusion of cardless check-in via Identity One ... the first time through interactive displays at the ...
Breaking Biology News(10 mins):Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3Personal Data Protection Company Launches New Product 2ABC Financial Unveils New Software Enhancements 2ABC Financial Unveils New Software Enhancements 3
... between Kent State University, Summa Health System and IC-MedTech Inc. ... promise of new drugs which may more effectively manage cancer ... 1.5 million new cases of cancer will be diagnosed this ... establish a goal of eliminating suffering and death due to ...
... of the worlds leading STM publishers, has signed publishing ... past half year. With this move, Springer will ... society journals and confirms its long tradition of dedication ... Asia. Agreements to start publishing their journals in ...
... Scientists know that inside each cell, a little engine ... instructions from genes in the nucleus that get carried to ... our daily needs. Now researchers at the University of Michigan ... scans the cells DNA for damage. When certain types of ...
Cached Biology News:Researchers develop liquid crystal pharmaceuticals to fight cancer and other diseases 2Researchers develop liquid crystal pharmaceuticals to fight cancer and other diseases 3Enzyme alerts cell's powerful army to repair DNA damage 2Enzyme alerts cell's powerful army to repair DNA damage 3
(Date:3/27/2015)... 27, 2015 Earlier this year, the ... of hair regrowth in adult men and women with ... Norwood Hamilton classifications of IIa-V and Fitzpatrick Classification of ... by products that over-promise and under-deliver, FDA Clearance underscores ... and confidence among more than 80 million men and ...
(Date:3/27/2015)... (PRWEB) March 27, 2015 The consumption ... back of the recession and high prices in 2008. ... has recovered and keeps on gaining momentum now. , ... stands at more than 100,000 thousand tonnes. No considerable ... Meantime, the global capacity rocketed during 2012-2013, registering 11% ...
(Date:3/27/2015)... YORK , 27. März 2015 /PRNewswire/ ... Prize in Biomedical Science für seine bahnbrechende ... Proteine zwischen Zellkompartimenten transportiert werden, sowie für ... Zellen zur Reaktion auf Stress nutzen, der ... Dr. Walter ist Professor für Biochemie an ...
(Date:3/27/2015)... -- Neogen Corporation (NASDAQ: NEOG ) announced today that ... in accordance with Securities and Exchange Commission rule 10b5-1. ... Corporation, is a minority owner of this entity that ... Herbert does not have control of this entity, but ... for a portion of the shares owned by that ...
Breaking Biology Technology:Dr. Robert Leonard Applauds FDA Clearance of Capillus272Pro™ Hair Loss Laser Cap 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 4Neogen CEO adopts 10b5-1 Trading Plan 2
... in secret. , Most people did not know that ... Sandia National Laboratories was contributing important information to the ... that cause the disease anthrax. The spores were mailed ... offices and to two U.S. senators. Five people were ...
... Standards and Technology (NIST) have developed a radical new method ... small as one nanometer (one billionth of a meter).* Because ... a wide range of ions tailored to the task at ... for carving smaller features on semiconductors than now are possible ...
... Gen-Probe Incorporated,(Nasdaq: GPRO ) announced today that the ... Healthcare Conference on Tuesday, November 18,2008 at approximately 3:10 ... live and may be accessed through a link on ... The webcast,will be available for 30 days following the ...
Cached Biology Technology:FBI unveils science of anthrax investigation 2FBI unveils science of anthrax investigation 3Cold atoms could replace hot gallium in focused ion beams 2Gen-Probe to Webcast Presentation at the Lazard Capital Markets 5th Annual Healthcare Conference 2
... Serum is obtained from ... from healthy, fasted donors. The ... any way and are maintained ... Total Protein Concentration : ...
Hamster serum...
... 96-well Filter Plates are offered in several ... um depth filter plates are ideal to ... Filtration is simple, versatile, and necessary to ... Captiva 10 um glass fiber and 20 ...
... Kit with CyScribe GFX Purification Kit, ... purification of Cy3- and Cy5-labeled cDNA.Optimized ... cDNA labeling and purification.Flexible and optimized ... labeling reactions with either Cy3- or ...
Biology Products: