Exam 55: Population Ecology

A population of water fleas in one pond has been declining. A storm leads to the migration of a few individuals from another pond into the original subpopulation, and the new migrants help prevent the original population from going extinct. This is an example of

Which of the following statements is an example of a density-independent effect?

If the death rate in a population is unrelated to the number of individuals in an area, the resulting change in population size is said to be _______.

Which of the following represents the correct ranking of dispersal patterns, from the greatest to least expected difference between one individual and its nearest neighbor?

Which of the following would probably not be true of a population whose dynamics are primarily influenced by density-independent factors?

Species with a roughly constant mortality rate (such as many birds) are said to have a Type _______, or _______, survivorship curve.

How does the age structure of a country's population affect its potential for future population growth? In your answer, contrast an industrialized country such as Germany with a developing country such as Uganda (see Figure 55.15).

Which pattern of survivorship is most likely for an organism such as the sea urchin, which produces large numbers of very small offspring and provides no parental care?

Which of the following statements about efforts to introduce large mammals to small isolated islands is true?

A group of individuals all born in the same time period constitutes a _______.

The larger population that comprises many subpopulations is known as a

If a total of 2,400 oak trees are counted in a 6 km $\times$ 2 km rectangular patch of land, the density of the oak trees is _______ per square km.

Which of the following conditions would not bias the estimates made from a capture-mark-recapture study?

The process by which immigrants prevent a subpopulation from becoming extinct is called the

Use the following to answer questions : Refer to the graph below, showing the population growth of two different colonies of 65 rabbits each over 10 years. -What type of population growth is occurring in population B? If it is logistic, what is the carrying capacity?

Draw and explain survivorship curves characteristic of humans in a wealthy country, wild birds, and a typical plant.

The proportion of individuals alive at the start of a time period, divided by the total number born, is known as the _______.

If the intrinsic rate of growth of a population is zero, then the population

The ability of migrants from one subpopulation to prevent another subpopulation from going extinct is known as the _______.

Use the following to answer questions : Refer to the graph below, showing the mortality rate of two species of mammals over the course of 9 months. -Based on the mortality graph, which type of survivorship curve does species A have?