Exam 12: Metapopulations

________ rate is affected by fecundity and mode of reproduction.

Contrast sink and source populations. Discuss the importance of source-sink dynamics to species conservation.

At the ________, or within-patch scale, individuals move and interact with each other in the course of their routine feeding and breeding activities.

Discuss three characteristics of species that affect their potential rates of colonization and extinction.

Metapopulation persistence is a dynamic balance between the ________ and (re)colonization of empty habitat patches.

As heterogeneity of habitat in a local population increases, the population density fluctuates more.

Describe the assumptions made to mathematically model metapopulation dynamics. Are these assumptions appropriate? Why or why not?

A large patch of habitat tends to be more spatially heterogeneous than a small patch of habitat.

Which of the following is NOT an assumption of the model of population dynamics developed by Levins?

As the habitat heterogeneity of a patch increases

In the context of a metapopulation, explain how patch size and its degree of isolation affect the equilibrium value of P (proportion of patches occupied).

In the equation, P = 1 - e/m, e represents

Critique the classic definition of a population as "a group of organisms of the same species occupying a particular area at a particular time." Describe the alternative hierarchical approach for describing the concept of a population.

Sexually reproducing plants tend to have lower rates of local extinction than asexually reproducing plants.

In a typical metapopulation

The dynamics of local populations are synchronized in most metapopulations.

A ________ is a collection of metapopulations in a geographic region.

A subspecies encompasses the largest geographic range in the population concept hierarchy.

The probability of core population extinction is less than that of satellite populations in a metapopulation.

Describe the four conditions necessary for the term metapopulation to apply to a system of local populations.