Exam 11: Population Distributions

Which population model applies to the situation in which patches of suitable habitat are embedded within a matrix of unsuitable habitat?

Ants should live in _____ populations, and rhinoceroses should live in _____ populations.

The range of abiotic conditions under which a species can persist is called its

Dispersal limitation occurs when

The relationship between population density and adult body size is demonstrated in many organisms. Would you expect this relationship to hold true for body size averaged across all developmental stages (juveniles to adults)? Why or why not?

The orange-breasted sunbird (Anthobaphes violacea) lives only in the fynbos region in the Western Cape of South Africa. This is an example of

Ship ballast water facilitates transfer of marine invertebrates between distant oceans. This is an example of

When a species is in danger of becoming extinct, scientists use ecological niche modelling to assess where the species might have the highest probability of successful reintroductions. What does ecological niche modelling determine?

Although there is suitable habitat for sugar maple (Acer saccharum) in Europe and Asia, it is limited to North America because of lack of

A southern European songbird, the blue tit (Parus caeruleus), breeds in two habitats that differ greatly in quality: downy oak forest and holm oak forest. In downy oak habitats, there are six times as many breeding pairs of blue tits and they produce 60 percent more total offspring per year than the holm oak blue tit populations. The downy oak blue tit populations have the potential to grow at the rate of 9 percent annually. In holm oak habitats, blue tits perform poorly and populations have the potential to decline 13 percent annually. Given the differences in the two habitats, why do blue tits persist in both? Be sure to include a discussion of the relevant metapopulation model in your answer.

Per capita benefit is the amount of resources

Which dispersion should be favoured among plants that compete intraspecifically by casting shade?

Populations whose individuals _____ favour clustered dispersion.

What factors drive the relationship between population density and adult body size?

When a larger population is broken up into smaller groups that live in isolated patches, the smaller groups are called

Which of these measurements is NOT an example of density?

The best way to quantify organisms that are well camouflaged is a(n) _____ survey.

According to an ideal free distribution, individual organisms would be expected to move into low-quality habitat

A species of tree is found from the Canadian border down to the southeast United States. This is called the species'

During the annual Christmas bird count conducted by the Audubon Society, volunteers count the number of individuals of every bird species they can see or hear within a 24-kilometre circle. This is an example of a(n) _____ survey.