R/K selection theory | Wikipedia audio article
Channel: wikipedia tts
Date: 25/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/R/K_selection_theory


00:01:03 1 Overview
00:02:25 1.1 ir/i-selection
00:03:48 1.2 iK/i-selection
00:05:18 1.3 Continuous spectrum
00:06:16 2 Ecological succession
00:07:43 3 Application
00:08:53 4 Status
00:11:30 5 See also



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SUMMARY
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In ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus upon either increased quantity of offspring at the expense of individual parental investment of r-strategists, or reduced quantity of offspring with a corresponding increased parental investment of K-strategists, varies widely, seemingly to promote success in particular environments.
The terminology of r/K-selection was coined by the ecologists Robert MacArthur and E. O. Wilson in 1970 based on their work on island biogeography; although the concept of the evolution of life history strategies has a longer history  (see e.g. plant strategies).
The theory was popular in the 1970s and 1980s, when it was used as a heuristic device, but lost importance in the early 1990s, when it was criticized by several empirical studies. A life-history paradigm has replaced the r/K selection paradigm but continues to incorporate many of its important themes.