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

isturbed conditions. At low disturbance, the hypothesis suggests that the ecosystem will be dominated by species that are good competitors. At some intermediate disturbance level, the good competitors will have an opportunity to gain a foothold without being destroyed by disturbance, but will not be able to out-compete the hardier species or exclude less-fit species.

In this study, the 11 species differed markedly in their competitive ability and in their ability to tolerate disturbance. When considered together, there was a strong tradeoff between the two traits, according to Jiang.

"Each species was most vulnerable to inter-species competition at its upper disturbance limit, which is when its population density was the most severely reduced," noted Jiang.

While this study provided unique experimental evidence that competition can consistently regulate species extinction and community richness over broad disturbance gradients, three characteristics of this experiment may influence the applicability of these results to other systems, according to Jiang.

First, since the protist species in these experiments competed for shared food resources and affected each other by reducing the availability of those resources, these findings may not apply to communities competing in other ways, such as those physically or chemically fighting with each other. Second, there was no outside immigration into the experimental microcosms, unlike natural communities in which other organisms can join the competition.

Finally, given the size of the microcosms, disturbance in the experiments could be considered "global", which contrasts with the more common situation in nature where disturbance is heterogeneous over an area.

In the future, more attention should be focused on examining other mechanisms that may potentially contribute to intermediate disturbance hypothesis patterns, says Jiang.

"Our results challenge conventiona
'/>"/>

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:5/18/2015)... , May 18, 2015 Fingerprint Cards ... FPC1020, FPC1025, FPC1145, FPC1155 and FPC1035 from one if its ... until and including Q3 2015 and the sensors will be ... Communicated order values for 2015 hereby amount to 740 MSEK ... 2015 of 140 MSEK and a number of smaller orders ...
(Date:5/11/2015)... 2015  Synaptics Incorporated (NASDAQ: SYNA ), ... announced the appointment of Wajid Ali ... reporting to Rick Bergman , President and ... Officer, Kathleen Bayless , who announced her ... Ali brings extensive financial management expertise to Synaptics, ...
(Date:5/10/2015)... GOTHENBURG, Sweden , May 11, 2015 ... touch fingerprint sensors FPC1025 and FPC1155 from the distributor World ... one of FPC,s distributors in Asia . ... the sensors will be used by smartphone manufacturers in ... is included in the communicated revenue guidance of + 1 000 ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 235 Million 2
... to tackle wheat,s worst enemy , Unlocking ancient rice ... in aphids, mouths, Reducing crop losses with cereals that ... better Indian varieties , Over 40 international research organisations ... will harness bioscience to improve food security in developing ...
... the physical process that creates that oh-so-alluring new car ... out, not particularly wholesome for sensitive satellite instruments, either. But ... to protect those instruments from its ill effects. ... car is its factory-fresh new car smell, a distinctive aroma ...
... Aware, Inc. (NASDAQ: AWRE ), a leading supplier ... that its Board of Directors has declared a special cash ... total.  The special cash dividend will be paid on December ... 2012.  The Board of Directors has determined ...
Cached Biology News:Major international push to maximize bioscience research to help world's poorest farmers 2Major international push to maximize bioscience research to help world's poorest farmers 3Major international push to maximize bioscience research to help world's poorest farmers 4Ah, that new car smell: NASA technology protects spacecraft from outgassed molecular contaminants 2Ah, that new car smell: NASA technology protects spacecraft from outgassed molecular contaminants 3Aware, Inc. Declares Special Cash Dividend of $1.80 Per Share, or Approximately $40 Million in Total 2
(Date:5/29/2015)... Asthma treatment could   ...   treatments enter arena, says   GBI Research ... facing several of the leading asthma brands, such as ... (omalizumab), the global market for asthma treatment is set ... decade.   New analysis from business intelligence ...
(Date:5/29/2015)... , May 29, 2015 Delcath Systems, ... and medical device company focused on oncology with ... metastatic liver cancers, announces that results of a ... uveal melanoma patients with hepatic metastases with the ... highlighted in an on-line abstract at the American ...
(Date:5/29/2015)... May 29, 2015  Caris Life Sciences® today ... in which researchers utilized Caris Molecular Intelligence®, the ... potential therapeutic targets in patients with colorectal and ... programmed cell death protein 1 (PD-1) and its ... at the 2015 American Society of Clinical Oncology ...
(Date:5/29/2015)... May 28, 2015 Research and Markets ... Jain PharmaBiotech,s new report "Cytogenetics - Technologies, ... This report deals with cytogenetics in a ... to describe the chromosome structure and identify abnormalities ... biology, it is also referred to as molecular ...
Breaking Biology Technology:Personalized Treatment for Severe Asthma to Drive Market Growth Despite Patent Expirations 2Personalized Treatment for Severe Asthma to Drive Market Growth Despite Patent Expirations 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 2Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 3Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 4Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 2Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 3
... April 15, 2011 Carmell Therapeutics, a company that ... of injured tissues, has closed on a Series A ... facility and collect data for early clinical validation for ... was led by Harbor Light Capital Partners, a private ...
... Therapeutics, Inc. (Nasdaq: HALO ) today announced ... patients who receive their insulin treatment with a ... Halozyme,s rHuPH20 (recombinant human hyaluronidase) with the active ingredient ... of action. These preliminary results represent the first reported ...
... Promising new devices for mechanical circulatory support of ... research, will be revealed this week at the International ... Meeting and Scientific Sessions. An update from the Pumps ... presented during the Meeting in San Diego.  PumpKIN is ...
Cached Biology Technology:Carmell Therapeutics Completes Series A Financing to Advance the Development of Novel Bioactive Plastics 2Carmell Therapeutics Completes Series A Financing to Advance the Development of Novel Bioactive Plastics 3Halozyme's Ultrafast Insulin Generates Faster-In and Faster-Out Profile for Type 1 Diabetes Patients Using Insulin Pumps 2Halozyme's Ultrafast Insulin Generates Faster-In and Faster-Out Profile for Type 1 Diabetes Patients Using Insulin Pumps 3Halozyme's Ultrafast Insulin Generates Faster-In and Faster-Out Profile for Type 1 Diabetes Patients Using Insulin Pumps 4Progress in the Development of Mechanical Circulatory Support Devices for Children to be Presented at International Heart and Lung Transplant Meeting 2Progress in the Development of Mechanical Circulatory Support Devices for Children to be Presented at International Heart and Lung Transplant Meeting 3
... Service includes 1. Scanning of gel(s) ... High-sensitive tryptic in-gel digestion and peptide ... MALDI-MS 5. Acquisition of PMF (Peptide ... ultraflex TOF/TOF) 6. Acquisition of PFF ...
... Nucleic acid hybridization Preparation Reconstitution: ... BSA, 50 mg ficoll and ... 5 ml of water yields ... molecular biology Density: 1.00 g/mL ...
... The ImageXpress 5000A automated cellular imaging and ... software system designed specifically for rapid acquisition ... throughput cell-based screening. ImageXpress is fast. ... resolution (1280 x 1024 pixels), with two ...
... The ProteinChip Antibody ... assay development and optimization ... evaluate antibody-antigen interactions. This ... and differentiation of multiple ...
Biology Products: