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edge effect

noun Ecology.
  1. the tendency toward greater variety and density of plant and animal populations in an ecotone.
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Origin of edge effect

First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

edge effect in Science

edge effect

[ĕj]
  1. 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.
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