Navigation Links
Confirmed: How plant communities endure stress
Date:1/30/2013

PROVIDENCE, R.I. [Brown University] Ecology is rife with predation, competition, and other dramatic "negative interactions," but those alone do not determine the course life on Earth. Organisms sometimes benefit each other, too, and according to the Stress Gradient Hypothesis, their "positive interactions" become measurably more influential when ecosystems become threatened by conditions such as drought. Ecologists have argued about the hypothesis ever since Brown University ecologist Mark Bertness co-proposed it in 1994; Bertness says a large new global meta-analysis he co-authored in Ecology Letters definitively shows that it is true.

The evidence, principally analyzed by former Brown visiting graduate student Qiang He of Shanghai Jiao Tong University in China, comes from 206 studies of 727 shifts of plant interactions amid varying degrees, or gradients, of stress on six continents. Examining the data from each paper and contacting original authors when necessary, He determined the overall trends across the many experiments.

In the vast majority of studies, as stress increased, the significance of interactions shifted toward mutual support in that positive interactions, such as those that promoted neighbors' survival, strengthened in influence, and negative interactions, such as those that hindered neighbors' growth, weakened. In some studies, stress did not change interactions, but negative interactions never increased as stress did, no matter what kinds of plants were involved, what kinds of conditions they were under, or where they were.

"Our results show that plant interactions generally change with increased environmental stress and always in the direction of an outright shift to facilitation (typical for survival responses) or a reduction in competition (typical from growth responses)," the authors wrote in the paper published online. "We never observed an increase in competition at higher stress. These findings wer
'/>"/>

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. USDA grant advancing deadly plant disease, insect research
2. Breakthrough: How salt stops plant growth
3. Plants adapt to drought but limits are looming, study finds
4. How the protein transport machinery in the chloroplasts of higher plants developed
5. Giant tobacco plants that stay young forever
6. Invading species can extinguish native plants despite recent reports
7. Bugs need symbiotic bacteria to exploit plant seeds
8. Low extinction rates made California a refuge for diverse plant species
9. Study finds Jurassic ecosystems were similar to modern: Animals flourish among lush plants
10. Improving DNA amplification from problematic plants
11. Scientists join forces to bring plant movement to light
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Confirmed: How plant communities endure stress
(Date:9/30/2014)... N.C. -- Pollution in urban and farm runoff in ... new study finds. , The study, published Tuesday ... that nitrogen in the runoff ends up in algae ... on the animals, eyes, flippers and internal organs. , ... the National Oceanic and Atmospheric Administration (NOAA) conducted the ...
(Date:9/30/2014)... hope: A new research report published in October 2014 ... explains how scientists developed a synthetic version of a ... in human and mouse eggs similar to the natural ... fertilization. , "We believe that the results of this ... of human fertilization by providing a precise answer to ...
(Date:9/30/2014)... People who suffer from asthma may think there,s ... asthma besides properly taking medications and avoiding allergic triggers. ... Annals of Allergy, Asthma and Immunology , the ... and Immunology (ACAAI), asthma sufferers can learn lessons about ... described in the Annals article improved her asthma once ...
Breaking Biology News(10 mins):Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Synthetic sperm protein raises the chance for successful in vitro fertilization 2Asthma symptoms kicking up? Check your exposure to air pollution 2
... Environmental Research UFZ present CLIMBER: Climatic niche ... dataset on the climatic niche characteristics of 397 European ... information provided in this dataset is of great relevance ... of high quality standards and open access, data ready ...
... fins with self-adaptive flaps, the feathers on a diving peregrine ... a study published in PLOS ONE on February ... and Fluid Dynamics in Germany and colleagues., Peregrine falcons are ... to 200 miles per hour when diving. Scientists studying the ...
... 6, 2014 -- Advances in neonatal care for very ... for these fragile infants. However, preterm infants have ... serious lung disease, which is a major cause of ... scheduled for publication in The Journal of Pediatrics ...
Cached Biology News:Unique new dataset CLIMBER: Climatic niche characteristics of the butterflies in Europe 2Stem cells to treat lung disease in preterm infants 2
(Date:10/1/2014)... (PRWEB) September 30, 2014 New applications ... arrangements that have evolved in nature over millennia are ... bioinspired materials for applications in biophotonics in the ... . The journal is published by SPIE, the international ... Library. Several of the peer-reviewed articles are accessible via ...
(Date:10/1/2014)... -- This report analyzes the worldwide markets ... the following Product Segments: Proteases, Polymerases, Carbohydrases, ... also analyzed are Pharmaceuticals & Diagnostics, Research/Biotechnology, ... separate comprehensive analytics for the US, Canada, ... America. Annual estimates and forecasts are provided ...
(Date:9/30/2014)... analog of one of nature,s most efficient light-harvesting ... led by Alejandro Briseno of the University of ... developing long-sought polymer architecture to boost power-conversion efficiency ... devices. , Briseno, with colleagues and graduate ... University and Dresden University of Technology, Germany, report ...
(Date:9/30/2014)... Over the last decade, the laboratory filtration market is ... increased acceptance of new filtration technologies in end users ... also catalyzing the growth of laboratory filtration market. , ... at a strong CAGR during the forecast period of ... by 2019. The market is mainly driven by the ...
Breaking Biology Technology:Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 2Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 3Global Specialty Enzymes Industry 2Global Specialty Enzymes Industry 3Global Specialty Enzymes Industry 4Global Specialty Enzymes Industry 5Global Specialty Enzymes Industry 6Global Specialty Enzymes Industry 7Global Specialty Enzymes Industry 8Global Specialty Enzymes Industry 9Global Specialty Enzymes Industry 10Global Specialty Enzymes Industry 11Global Specialty Enzymes Industry 12Global Specialty Enzymes Industry 13Global Specialty Enzymes Industry 14Global Specialty Enzymes Industry 15Global Specialty Enzymes Industry 16Global Specialty Enzymes Industry 17Global Specialty Enzymes Industry 18Global Specialty Enzymes Industry 19Global Specialty Enzymes Industry 20Global Specialty Enzymes Industry 21Global Specialty Enzymes Industry 22Global Specialty Enzymes Industry 23Global Specialty Enzymes Industry 24Global Specialty Enzymes Industry 25Global Specialty Enzymes Industry 26Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 2Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 3Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 4Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 5
... Isis,Pharmaceuticals, Inc. (Nasdaq: ISIS ) today announced ... Parshall, J.D. to Chief Operating Officer,effective immediately. Ms. ... is a Director of the Company., "This ... Lynne,s responsibilities at Isis," commented Stanley Crooke, M.D.,Ph.D., ...
... WuXi PharmaTech (NYSE:,WX), China,s premier provider of ... Deval L. Patrick of the Commonwealth of,Massachusetts, ... Official Delegation, paid a visit to the ... (Logo: http://www.newscom.com/cgi-bin/prnh/20040705/CNM002LOGO ), Massachusetts ...
... Pharmaceutical announced,today that the Avon Foundation Breast Cancer ... to conduct multicenter clinical studies,focused on measuring levels ... and tissue samples from breast cancer patients. Results ... a blood test that would,enable early detection of ...
Cached Biology Technology:Isis Announces Appointment of B. Lynne Parshall as Chief Operating Officer 2Isis Announces Appointment of B. Lynne Parshall as Chief Operating Officer 3Massachusetts Governor Deval L. Patrick Pays Visit to WuXi PharmaTech 2Massachusetts Governor Deval L. Patrick Pays Visit to WuXi PharmaTech 3A&G Pharmaceutical Receives $870,000 Grant from Avon Foundation to Advance Innovative Blood Diagnostic Test for Early Detection of Breast Cancer 2A&G Pharmaceutical Receives $870,000 Grant from Avon Foundation to Advance Innovative Blood Diagnostic Test for Early Detection of Breast Cancer 3
Recombinant Mouse Wnt-3a...
... at least 20 structurally and functionally related ... superfamily. BMPs were originally identified as protein ... are also involved in embryogenesis and morphogenesis ... the growth, differentiation, chemotaxis and apoptosis of ...
RABBIT ANTI HUMAN TRRAP (CT) Immunogen: Recombinant C-terminal kinase-related domain of human TRRAP....
RABBIT ANTI HUMAN CHYMOTRYPSIN...
Biology Products: