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.

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 August 21, 2014 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 August 21, 2014).

Share This




More Plants & Animals News

Thursday, August 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) — A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Flower Power! Dandelions Make Car Tires?

Flower Power! Dandelions Make Car Tires?

Reuters - Business Video Online (Aug. 20, 2014) — Forget rolling on rubber, could car drivers soon be traveling on tires made from dandelions? Teams of scientists are racing to breed a type of the yellow flower whose taproot has a milky fluid with tire-grade rubber particles in it. As Joanna Partridge reports, global tire makers are investing millions in research into a new tire source. Video provided by Reuters
Powered by NewsLook.com
Unsustainable Elephant Poaching Killed 100K In 3 Years

Unsustainable Elephant Poaching Killed 100K In 3 Years

Newsy (Aug. 20, 2014) — Poachers have killed 100,000 elephants between 2010 and 2012, as the booming ivory trade takes its toll on the animals in Africa. Video provided by Newsy
Powered by NewsLook.com
Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) — Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
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:
from the past week

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