Featured Research

from universities, journals, and other organizations

Changes In Community Size Affect The Outcome Of Competition

Date:
May 13, 2005
Source:
University of Chicago Press Journals
Summary:
In a study to be published in the July 2005 issue of The American Naturalist, researchers show that chance may play a role in coexistence because, although poor competitors generally lose, they may occasionally get lucky.

Competition is a pervasive feature of life. Yet, how can so many organisms coexist when some must be better competitors than others? In a study to be published in the July 2005 issue of The American Naturalist, researchers show that chance may play a role in coexistence because, although poor competitors generally lose, they may occasionally get lucky.

Related Articles


Using theory developed for population genetics, the study demonstrates that stochastic events may override competitive ability in determining the outcome of competition: inferior competitors are relatively more likely to emerge victorious in ecological communities where the role of chance is increased because communities are small, shrinking, or both. When communities are large or increasing in size, the opposite is true: superior competitors are more likely to win.

This work extends previous models of coexistence by suggesting that inferior competitors need not rely solely upon superior dispersal ability to persist with better competitors. Results can also help explain why biological invasions frequently occur in communities that have been degraded and fragmented by anthropogenic activities, because rapid reductions in the size of communities make it relatively more likely that inferior exotic species will usurp native species, even if natives are better competitors. Given ongoing habitat change and the incalculable costs of biological invasions, stochasticity may have consequences for competitive interactions that are anything but lucky.

###

Sponsored by the American Society of Naturalists, The American Naturalist is a leading journal in the fields of ecology and evolutionary biology and animal behavior. For more information, please see our website: www.journals.uchicago.edu/AN

John L. Orrock and Robert J. Fletcher, Jr., "Changes in community size affect the outcome of competition" 166:1 July 2005.


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University of Chicago Press Journals. "Changes In Community Size Affect The Outcome Of Competition." ScienceDaily. ScienceDaily, 13 May 2005. <www.sciencedaily.com/releases/2005/05/050513224132.htm>.
University of Chicago Press Journals. (2005, May 13). Changes In Community Size Affect The Outcome Of Competition. ScienceDaily. Retrieved March 29, 2015 from www.sciencedaily.com/releases/2005/05/050513224132.htm
University of Chicago Press Journals. "Changes In Community Size Affect The Outcome Of Competition." ScienceDaily. www.sciencedaily.com/releases/2005/05/050513224132.htm (accessed March 29, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Sunday, March 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

Newsy (Mar. 29, 2015) A 508-million-year-old arthropod that swam in the Cambrian seas is thought to share a common ancestor with spiders and scorpions. Video provided by Newsy
Powered by NewsLook.com
Vietnam Rice Boom Piles Pressure on Farmers and the Environment

Vietnam Rice Boom Piles Pressure on Farmers and the Environment

AFP (Mar. 29, 2015) Vietnam&apos;s drive to become the world&apos;s leading rice exporter is pushing farmers in the fertile Mekong Delta to the brink, say experts, with mounting costs to the environment. Duration: 02:35 Video provided by AFP
Powered by NewsLook.com
Raw: Lioness Has Rare Five-Cub Litter

Raw: Lioness Has Rare Five-Cub Litter

AP (Mar. 27, 2015) A lioness in Pakistan has given birth to five cubs, twice the usual size of a litter. Queen gave birth to two other cubs just nine months ago. (March 27) Video provided by AP
Powered by NewsLook.com
Jockey Motion Tracking Reveals Racing Prowess

Jockey Motion Tracking Reveals Racing Prowess

Reuters - Innovations Video Online (Mar. 26, 2015) Using motion tracking technology, researchers from the Royal Veterinary College (RVC) are trying to establish an optimum horse riding style to train junior jockeys, as well as enhance safety, health and well-being of both racehorses and jockeys. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins