Exam 11: Intraspecific Population Regulation

Explain why the timing of dispersal during low- or high-population density states can have very different impacts on the population.

As the density of a population increases, dispersal usually decreases.

The rate of aggressive interactions among individuals increases as population density increases.

The home range of an animal is usually larger for

Plants can capture and defend space.

When competing individuals deplete a shared resource without direct interaction, it is called ________ competition.

Explain direct and indirect effects of predation and food supply on the reproductive success of song sparrows.

________ growth is the inverse relationship between population density and individual growth.

Self-thinning

Why do some species have a larger home range than others? Explain why a carnivorous mammal requires a larger home range than an herbivorous mammal of similar body size.

The influence of density-independent factors on populations is generally less predictable than the influence of density-dependent factors.

________ occurs when individuals use a common resource that is in short supply relative to the number seeking it.

How does the behaviour of wild wolf packs differ from observations made in experimental studies?

The progressive decline in density and increase in biomass of remaining individuals in a population is known as ________.

In the wild, the regional population size of wolves is controlled by

Explain how altruism may not be in conflict with the principles of natural selection.

A plant grown at high density will produce ________ seeds than the same plant grown at low density.

The factors that influence a population in proportion to its size are called ________ factors.

Which of the following is considered a density-dependent factor that regulates population growth?

Fecundity is unrelated to body size.