APES R and K selected

Exponential

Growth pattern in which the individuals in a population reproduce at a constant rate.

Ephemeral

Lasting for a short time.

Opportunistic

A description of organism behaviour that takes advantage of resources and has a high reproductive effort.

Equilibrium

A description of organism behaviour that carefully controls population numbers by having a lower reproductive effort.

K-selected

Species with this reproductive strategy have a low intrinsic growth rate that causes the population to increase slowly until it reaches carrying capacity.

r-selected

Species with this reproductive strategy reproduce quickly and have many offspring

Small

Size of young for r-selected species.

Large

Size of young for K-selected species.

Many

Number of young produced by r-selected species.

Few

Number of young produced by K-selected species.

Rapidly

Rate at which r-selected species mature.

Slowly

Rate at which K-selected species mature.

Little

Amount of care given to offspring by r-selected species.

Much

Amount of care given to offspring by K-selected species.

Early succession

r-selected species are more common in this environment

Stable

K-selected species are more common in this environment.

Carrying capacity

Largest number of individuals of a population that an environment can support.

Reproductive effort

The allocation of energy, time, and other resources to the production and care of offspring.