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edge effect

noun, Ecology
1.
the tendency toward greater variety and density of plant and animal populations in an ecotone.
Origin
1930-1935
1930-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for edge effect
  • In many cases, edge effect may determine the distribution and densities of small mammal populations.
  • The edge effect is maximized by feathering all harrowing boundaries.
  • The decommissioning will reduce edge effect and habitat fragmentation.
edge effect in Science
edge effect
  (ěj)   
The influence that two ecological communities have on each other along the boundary (called the ecotone) that separates them. Because such an area contains habitats common to both communities as well as others unique to the transition zone itself, the edge effect is typically characterized by greater species diversity and population density than occur in either of the individual communities.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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