Exam 3 Terms

Question 1

Background Rate?

Answer 1

The pre-human extinction rate during periods in between major extinction events

Question 2

Keystone Species?

Answer 2

A species that has a disproportionately large effect on its environment relative to its abundance

Question 3

Island Biogeography?

Answer 3

An explanation of how natural forces act to control the number of species in a given area

Question 4

Apex Predator?

Answer 4

Animals in any ecosystem that occupy the top trophic level and may not have any predators of their own

Question 5

Transboundary Conservation Areas (TCAs)?

Answer 5

Areas that straddle one or more borders and are dedicated to protecting and maintaining biodiversity, and are managed cooperatively

Question 6

Peace Parks?

Answer 6

transboundary parks dedicated to protecting and maintaining biological diversity as well as the protection of peace and cooperation

Question 7

Ecosystem Engineers?

Answer 7

Organisms that directly or indirectly modulate the availability of resources to other species by causing physical system changes in biotic and abiotic materials. In doing so they modify, maintain, and/or create habitats

Question 8

Keystone Herbivore?

Answer 8

A keystone species that affects the composition of the vegetative communities in which it resides through its interaction with the vegetation in those communities