Navigation Links
Mesquite trees displacing Southwestern grasslands
Date:3/17/2012

As the desert Southwest becomes hotter and drier, semi-arid grasslands are slowly being replaced by a landscape dominated by mesquite trees, such as Prosopis velutina, and other woody shrubs, a team of University of Arizona researchers has found.

In a "leaf-to-landscape" approach, the team combined physiological experiments on individual plants and measurements across entire ecosystems to quantify how well grasslands, compared to mesquite trees and woody shrubs, cope with heat and water stress across seasonal precipitation periods.

"Our results show that even the smallest mesquites are better adapted for thriving under elevated temperatures and dry conditions the projections for our future climate suggesting that these woody plants are here to stay," said Greg Barron-Gafford, an associate research professor with the UA's Biosphere 2 who led the study, which is published in the scientific journal Global Change Biology.

Over the last century, the face of the Southwest has changed. Before heavy cattle grazing, flowing carpets of grass comprised of, for example, Muhly (Muhlenbergia porteri) or Grama grass (Bouteloua eriopoda) blanketed much of Southern Arizona's open range. Today, woody plants like mesquite trees dominate the landscape.

Native to the region, mesquites have been here for a long time, but not in today's abundance, Barron-Gafford said. "Visitors that see our experimental display at Biosphere 2 are always surprised to hear that the Sonoran Desert in this area used to look very different a century ago."

Scientists have evidence to believe woody plants began displacing grasslands as a result of overgrazing, but has since been propelled by changing climate.

"If there are too many cattle, they have the same effect as a lawn mower," Barron-Gafford said. "They're tilling the soil, and because they don't eat the prickly things, they stay away from the established mesquite trees. But
'/>"/>

Contact: Daniel Stolte
stolte@email.arizona.edu
520-626-4402
University of Arizona
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Protecting living fossil trees
2. Walnut trees may not be able to withstand climate change
3. Planting depths effect on container-grown trees
4. Trees adapt to poor levels of sunlight to effectively process carbon, study shows
5. Trees on tundras border are growing faster in a hotter climate
6. 400,000 farmers in southern Africa using fertilizer trees to improve food security
7. Restoring forests and planting trees on farms can greatly improve food security
8. Water evaporated from trees cools global climate
9. A 3-D reconstructed image of neural dendritic trees using the advanced electron microscope technology
10. For the love of trees: Book tells all about forest hydrology, biogeochemistry
11. Pacific Northwest trees struggle for water while standing in it
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mesquite trees displacing Southwestern grasslands
(Date:7/13/2015)... Jul. 13, 2015 NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce ... patent 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION METHOD ... convenient and secure method to make payments.  With ... methods, introduced with its groundbreaking voice-direct payment patent ...
(Date:7/9/2015)... 2015  Unchained Labs just can,t get enough ... Avid Nano. Avid Nano designs, develops and manufactures ... Also today, Unchained Labs UNcaged the ... use protein sizing system. The pUNk is a ... size, size distribution, aggregation population and molecular weight. ...
(Date:7/8/2015)... N.J. and NEW YORK , July 8, ... Guidepoint today announced BD & Guidepoint Mentor, ... with free access to Guidepoint,s expert network services. ... are developing cutting-edge technologies to improve healthcare delivery and ... research manager, each start-up entrepreneur will be able to ...
Breaking Biology News(10 mins):NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3
... boosts in the microbial production of clean, green and ... of a new technique in synthetic biology by researchers ... Institute (JBEI). This new technique dubbed a ... in microbes during the production of fatty acid-based fuels ...
... York, N.Y. (March 26, 2012) Autism Speaks, the ... the award of new research grants totaling $1.1 million ... I are extraordinarily proud of Autism Speaks, continued funding ... open new avenues to understanding autism," said Autism Speaks ...
... and narwhals live solely in the cold waters of the ... not have always been the case. They recently described a ... belugas and narwhals that lived some 3-4 million years ago ... when its modern-day relatives evolved to live only in northern ...
Cached Biology News:New synthetic biology technique boosts microbial production of diesel fuel 2New synthetic biology technique boosts microbial production of diesel fuel 3New synthetic biology technique boosts microbial production of diesel fuel 4Autism Speaks awards $1.1 million to fund high priority studies 2Autism Speaks awards $1.1 million to fund high priority studies 3Ancient whale species sheds new light on its modern relatives 2
(Date:8/4/2015)... , ... August 05, 2015 , ... ... the “Product Handbook – the complete product line.” The handbook provides a ... “This new product handbook consolidates our complete standard product offering into an easy-to-navigate ...
(Date:8/4/2015)... Inc. (NYSE: BIOA ), a leader in renewable ... ending June 30, 2015. Highlights included: , The Sarnia ... The final cost of the Sarnia plant is projected ... high end of the estimate communicated at the onset ... The company announced commercial collaborations in two targeted industry ...
(Date:8/4/2015)... ... August 04, 2015 , ... Graphite Metallizing Corporation, ... equipment, announces the appointment of Dennis Rawle as European Director of Sales. Rawle ... recently, he was General Manager and Technical Sales Manager for pump products at ...
(Date:8/4/2015)... PORTLAND, Oregon , August 4, 2015 /PRNewswire/ ... published by Allied Market Research, titled, "World Cardiac ... global cardiac biomarker market would generate the revenue ... of 18.9% from 2015 to 2020. Cardiac Troponins ... throughout the forecast period due to high sensitivity ...
Breaking Biology Technology:Spirax Sarco releases Product Handbook 2BioAmber Reports Second Quarter 2015 Financial Results 2BioAmber Reports Second Quarter 2015 Financial Results 3BioAmber Reports Second Quarter 2015 Financial Results 4BioAmber Reports Second Quarter 2015 Financial Results 5BioAmber Reports Second Quarter 2015 Financial Results 6BioAmber Reports Second Quarter 2015 Financial Results 7BioAmber Reports Second Quarter 2015 Financial Results 8BioAmber Reports Second Quarter 2015 Financial Results 9BioAmber Reports Second Quarter 2015 Financial Results 10BioAmber Reports Second Quarter 2015 Financial Results 11BioAmber Reports Second Quarter 2015 Financial Results 12Dennis Rawle Joins Graphite Metallizing Corporation 2Cardiac Biomarker Market is Expected to Reach $2,085.9 Million by 2020 2Cardiac Biomarker Market is Expected to Reach $2,085.9 Million by 2020 3Cardiac Biomarker Market is Expected to Reach $2,085.9 Million by 2020 4Cardiac Biomarker Market is Expected to Reach $2,085.9 Million by 2020 5
... SAN DIEGO, March 6 Cadence Pharmaceuticals,Inc. (Nasdaq: ... in-licensing,developing and commercializing proprietary product candidates principally,for use ... will release its,fourth quarter and full year ended ... market on Wednesday, March 12, 2008., Cadence ...
... PICK: Pinpoint accuracy: DNA vaccines that home in on ... pursued to develop new vaccines against infectious diseases is ... a DNA vaccine, the body converts the information in ... immune response. However, current DNA vaccines induce relatively weak ...
... Elsevier, the world-leading publisher of scientific, technical and ... Materials 2009: The First International Conference on Multifunctional, ... Tours, France, 15-19 March 2009. , Research ... growth in published papers in recent years with ...
Cached Biology Technology:Cadence Pharmaceuticals to Host Conference Call and Webcast to Discuss Fourth Quarter and Full Year 2007 Financial Results and Clinical Program Overview on March 12, 2008 2JCI online early table of contents: March 6, 2008 2JCI online early table of contents: March 6, 2008 3JCI online early table of contents: March 6, 2008 4Hybrid materials: Exciting interdisciplinary field offering future solutions for industry 2
Anti-Human Factor XIII HRPO (Polyclonal) (sheep IgG)...
... Mouse monoclonal [F30 P7 D7 ... for all tested applications). ... conjugated to Ovalbumin, corresponding to amino ... Entrez Gene ID: ...
E2F-5...
LAB/Probe Mouse-Rabbit DAB Kit...
Biology Products: