Overview

r-selection

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bet-hedging

Overview page. Subjects: Zoology and Animal Sciences — Ecology and Conservation.

The behavioural response of a species population to a K-selecting environment in which occasional fluctuations in conditions affect the mortality rate of juveniles to a much greater extent...

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biotic potential

Overview page. Subjects: Biological Sciences.

Symbol r. The number of offspring of an individual organism that would survive to reproductive age under ideal conditons. It is a measure of an individual's reproductive potential, although...

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evolutionary trade-off

Overview page. Subjects: Ecology and Conservation.

The situation that occurs when a change in one trait increases fitness, but a simultaneous change in another trait reduces fitness, thus preventing the organism from optimizing both...

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K-selection

Overview page. Subjects: Biological Sciences.

A type of selection that favours organisms with a low rate of reproduction but whose populations expand to the maximum number of individuals that the habitat can support (the carrying...

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natural selection

Overview page. Subjects: Biological Sciences.

A complex process in which the total environment determines which members of a species survive to reproduce and so pass on their genes to the next generation. This need not necessarily...

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opportunist species

Overview page. Subjects: Zoology and Animal Sciences.

Describing a species that can quickly exploit new resources as they arise, for example by rapidly colonizing a new environment. Such species characteristically exhibit r selection.

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population explosion

Overview page. Subjects: Biological Sciences — Environmental Science.

A sudden rapid increase in size of the population of a species or genus. The most violent explosions occur when a species is introduced into a new locality where it finds unexploited...

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resource allocation

Overview page. Subjects: Biological Sciences.

The deliberate distribution and use of resources in an organized and efficient way, in order to meet defined goals or objectives, or to complete particular tasks in a timely and efficient...

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r-K continuum

Overview page. Subjects: Psychology.

A dimension along which natural selection is claimed by some sociobiologists to vary according to ecological conditions, from r-selection at one extreme to K-selection at the other. See...

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selection

Overview page. Subjects: Biological Sciences.

The process by which one or more factors acting on a population produce differential mortality and favour the transmission of specific characteristics to subsequent generations. See...

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