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 on either an increased quantity of offspring at the expense of individual parental investment of r-strategists, or on a reduced quantity of offspring with a corresponding increased parental investment of K-strategists, varies widely, seemingly to promote success in particular environments. The concepts of quantity or quality off… Webr- and K-selection in fluctuating populations is determined by the evolutionary trade-off between two fitness measures: Growth rate and lifetime reproductive success In a stable environment, evolution maximizes growth rates in populations that are not density regulated and the carrying capacity in the case of density regulation.

K selected and r selected population growth strategies - Khan …

Webr-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O. Wilson; K-selected species—that is, species whose … Web10 de jun. de 2024 · The r/K selection theory (i.e., Andrew and Harris, 1986) can be applied widely to describe two typical types of strategists in natural and engineered ecosystems.The r-strategists can be acclimated in an uncrowded and resource-rich environment (with little competition, e.g., a high substrate supply per capita), which are opportunists; while the K … chs business

The meanings of r- and K-selection SpringerLink

Web1 de jun. de 2002 · The theory of r- and K-selection was one of the first predictive models for life-history evolution. It helped to galvanize the empirical field of comparative life … Webr and K selection. Treating r, b, and d as constants, however, occludes such an analysis, since under this condition, so-called b selection and d selection are in fact both density independent and merely components of r selection. As such, Hairston et al.'s (1970) notions of b and d selection have nothing to do with K selection, per se. WebAlexander H. Kiser, Jennifer M. Khan, Clinton R. Robertson, Roel Lopez, Charles R. Randklev The effect of flow and mussel species traits on the occurrence of rare mussels: … chs business solutions