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Species Competition

Ecological Statistics

  1. Professor Linda J. Young

Published Online: 15 SEP 2006

DOI: 10.1002/9780470057339.vac038

Encyclopedia of Environmetrics

Encyclopedia of Environmetrics

How to Cite

Young, L. J. 2006. Species Competition. Encyclopedia of Environmetrics. 4.

Author Information

  1. University of Nebraska, Lincoln, NE, USA

Publication History

  1. Published Online: 15 SEP 2006

This is not the most recent version of the article. View current version (15 JAN 2013)


Interspecific competition arises when the interaction of two species has an adverse effect on both species. Competition may occur due to (a) exploitation (individuals from different species share the same limited resource(s)) or (b) interference (individuals from different species fight or exhibit other directly damaging behavior). Examples include two bird species seeking the same supply of insects, and tree seedlings of differing species sharing sunlight, water, and nutrients in the forest understory. Interest in competition dates at least to the time of Charles Darwin. Early studies tended to focus on discovering examples of one species replacing another. Competition studies have expanded to include investigations of the effect of environmental conditions on the competitive ability of one species relative to another, the role of competition in determining the distribution and abundance of organisms, and the conditions needed for species to coexist.


  • Lotka-Volterra equations;
  • experimental design;
  • abundance;
  • Jaccard index;
  • logistic regression