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edge effect

noun, Ecology.
the tendency toward greater variety and density of plant and animal populations in an ecotone.
Origin of edge effect
First recorded in 1930-35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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edge effect in Science
edge effect
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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