Exam 54: Community Ecology

As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each species seeks prey at dawn in areas without the other species. However, where their ranges overlap the two-spot avenger beetle hunts at night and the three-spot hunts in the morning. When you bring them into the laboratory, their offspring behave in the same manner. You have discovered an example of

Please refer to the following art to answer the following question. Figure 54.3 -According to the Shannon Diversity Index, which block would show the greatest diversity?

A species of fish is found to require a certain water temperature, a particular oxygen content of the water, a particular depth, a rocky substrate on the bottom, and a variety of nutrients in the form of microscopic plants and animals to thrive. These requirements describe its

Biomanipulation can best be described as

Which of the following statements is consistent with the principle of competitive exclusion?

Which of the following describes a successional event in which one organism makes the environment more suitable for another organism?

Which of the following is considered by ecologists a measure of the ability of a community either to resist change or to recover to its original state after change?

Based on the intermediate disturbance hypothesis, a community's species diversity is

The energetic hypothesis and dynamic stability hypothesis are explanations to account for

According to bottom-up and top-down control models of community organization, which of the following expressions would imply that an increase in the size of a carnivore (C)population would negatively impact on its prey (P)population, but not vice versa?

Use the following diagram of five islands formed at around the same time near a particular mainland and MacArthur and Wilson's island biogeography principles to answer the following questions. Figure 54.4 -Which island would likely have the lowest extinction rate?

Approximately how many kg of carnivore production can be supported by a field plot containing 2000 kg of plant material?

Monarch butterflies are protected from birds and other predators but the cardiac glycosides they incorporate into their tissues are from eating milkweed when they were in their caterpillar stage of development. The wings of a different species of butterfly, the Viceroy, look nearly identical to the Monarch so predators that have learned not to eat the bad-tasting Monarch avoid Viceroys as well. This example best describes

Ecologists are particularly concerned about pathogens because

According to the nonequilibrium model,

Use the following diagram of Joseph Connell's study of barnacle distribution in Scotland to answer the following two questions. Figure 54.1 -Which of the following is a good description of an ecological niche?

Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic levels. Figure 54.2 -Which letter represents an organism that could be a carnivore?

Community ecologists would consider which of the following to be most significant in understanding the structure of an ecological community?

Of the following zoonotic diseases, which is most applicable to study by a community ecologist?

Which of the following could qualify as a top-down control on a grassland community?