Navigation Links
Study challenges long-held assumption about competition in disturbed ecosystems
Date:6/28/2010

role of competition between species under disturbance. Disturbance was imposed by the application of sound energy to the small ecosystems at 11 different levels, ranging from weak disturbances that had little effect on most species to strong disturbances that caused the direct extinction of most species.

First, the researchers placed all of the protist species in separate microcosms for one month and measured each species' change in population density to assess the ability of each to cope with disturbance. Next, the researchers assessed the competitive ability of species by compelling pairs of species to battle for resources for 10 weeks in the absence of disturbance.

The final set of experiments subjected groups of protist species to both disturbance and competition. The population densities of 11 species -- including three Paramecium species -- in each of 55 microcosms were recorded for five months. The results of the multi-species experiment showed that the number of species decreased with increased disturbance and that most species were no longer present across most levels of disturbance.

"One might think that the observed decline of species diversity with disturbance was because high levels of disturbances directly eliminated most or all species. But this idea was not supported by our first set of experiments, which showed that several species were able to sustain viable populations even at the highest disturbance intensities when they were not with other species," explained Jiang.

Instead, the species extinctions that occurred through different levels of disturbance could be partly attributed to competition between species. And the rate of extinctions attributable to competition was greater at higher levels of disturbance.

The findings contradict the intermediate disturbance hypothesis, which suggests that at high levels of disturbance, the species that survive will be those that are hardy under d
'/>"/>

Contact: Abby Vogel Robinson
abby@innovate.gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study challenges long-held assumption about competition in disturbed ecosystems
(Date:1/22/2015)... EyeLock, Inc. , a market leader of iris-based identity authentication ... to the new role of Senior Vice President of Mobile ... mobile platforms and wearable solutions for EyeLock,s technologies. Gerber brings ... semiconductor industry to his role at EyeLock, with expertise in ...
(Date:12/22/2014)...  The 2014 Holiday Season may be the brightest ever ... that the long anticipated floodgates for consumer biometrics may ... smart phones, tablets, and wearable mobile devices that incorporate ... users with nearly 4.8 billion biometric devices by 2020.   ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... the "Samsung Galaxy S5 - Home Button Synaptics ... http://photos.prnewswire.com/prnh/20130307/600769 ... iPhone 5S, Samsung introduces for the first time a ...
Breaking Biology News(10 mins):EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... Viral diseases are still one of the biggest challenges ... co-evolution with humans, their ability to harness the biology of ... difficult to target with medical treatment. Scientists at the ... from the University of Colorado, have shown for the first ...
... The changes to the publication requirements of new ... XVIII International Botanical Congress in Melbourne in July 2011 ... To address practical questions arising from the Congress decisions, the ... a series of seven exemplar papers, one each day for ...
... 2011  The Evermedia Group, Inc. (Pinksheets: EVRM) would like ... colleagues: First and foremost, I want to thank our ... CEO to The Evermedia Group, advancing the interests of ... Biometrics (EBC).  I have been fortunate to work with ...
Cached Biology News:Hepatitis C virus hijacks liver microRNA 2Brave new world 2Brave new world 3The Evermedia Group 2011 Year in Review 2The Evermedia Group 2011 Year in Review 3The Evermedia Group 2011 Year in Review 4
(Date:1/22/2015)... Crystal Diagnostics (CDx) Xpress System, a rapid ... AOAC-PTM Certifications for the six non-O157 Shiga toxin-producing E. coli ... to as STEC or the “Big-6”) as well as Escherichia ... per 325 g of raw ground beef and raw beef ...
(Date:1/22/2015)... Wilmington, DE (PRWEB) January 22, 2015 ... the Pistoia Alliance, which helps companies check the legal ... set to expand to China. , As their ... companies are globally adopting software solutions built as a ...
(Date:1/22/2015)... Jan. 22, 2015   Cypher Genomics, Inc., ... (NASDAQ: SQNM ), the leading molecular ... next generation noninvasive prenatal tests (NIPT). Through this ... called Mantis™, to advance analysis of clinically-relevant fetal ...
(Date:12/25/2014)... 25, 2014 The report “Service Quality ... Type & Provider Type - Global Advancements, Worldwide Forecasts ... an in-depth analysis and forecasting of revenues. , ... 221 pages and in-depth TOC on “Service Quality Management ...
Breaking Biology Technology:Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Global Compliance Service for Controlled Substances to Expand to China 2Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 3Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 4
... 26, 2011 , Veeva Systems ... top 20 pharmaceutical companies, is replacing its legacy,on-premise ... the UK. Daiichi Sankyo will deploy Veeva CRM ... including integrated healthcare,specialty care, medical liaison scientists, and ...
... At an event at the University City Science ... U.S. Representatives Chaka Fattah (D-PA), Allyson Schwartz (D-PA) and ... that provides tax incentives for small and mid-sized businesses ... a targeted basis. The Life Sciences Jobs and ...
... Robert Ettinger, the founder of the cryonics movement and ... home in Clinton Township, Michigan, and has been frozen at ... temperatures after death in the hope that future technology will ... Mr. Ettinger wrote The Prospect of Immortality ...
Cached Biology Technology:Daiichi Sankyo Selects Veeva CRM to Support Customer Engagement Initiatives in the United Kingdom 2Daiichi Sankyo Selects Veeva CRM to Support Customer Engagement Initiatives in the United Kingdom 3Daiichi Sankyo Selects Veeva CRM to Support Customer Engagement Initiatives in the United Kingdom 4Coalition Applauds Introduction of Life Sciences Jobs and Investment Act 2Coalition Applauds Introduction of Life Sciences Jobs and Investment Act 3Coalition Applauds Introduction of Life Sciences Jobs and Investment Act 4Coalition Applauds Introduction of Life Sciences Jobs and Investment Act 5Founder of Cryonics Movement Dies, is Frozen at Cryonics Institute 2
Request Info...
Anti-ZFP200 Family: Zinc Finger Peptide Sequence: CGKSFNHKTNLNKHER...
Donor feline serum and plasma...
Collected from sexually mature, mixed sex, mixed breed cats. Physiochemical constituents are measured to ensure lot-to-lot consistency....
Biology Products: