Intraspecific Population Regulation Flashcards

Flashcards on Intraspecific Population Regulation.

Carrying capacity (K)

Maximum sustainable population size.

Density-dependent mortality

Mortality increases as population increases.

Density-dependent fecundity

Fecundity decreases as population increases.

Logistic model of population growth

Model of population growth considering carrying capacity: dN/dt = rN(1 - N/K).

Competition

An interaction that has a negative effect on both participants; occurs when individuals use a common resource in limited supply

Intraspecific competition

Competition between individuals of the same species

Scramble competition

Equal impacts to individuals, potentially leading to all individuals dying at its extreme.

Contest competition

Unequal impacts to individuals, some claim enough resources for themselves.

Exploitation

Competitive interactions due to indirect interactions

Interference

Competitive interactions due to direct interactions.

Self-thinning

Density-dependent growth and mortality.

Allee effect

Density-dependent mechanisms that reduce birthrate and survival at low population densities.

Density-dependent growth

Impacts manifested on growth/development, inverse relationship.