Exam 21: B: Population Ecology on the Tracks of Wolves and Moose

When a population reaches its carrying capacity,its growth rate will

Why do populations rise and fall around carrying capacity instead of just remaining stable at carrying capacity?

What defines an ecosystem?

Which is NOT a biotic factor that could affect a population?

The ocean,sand,rocks,plants,seagulls,and invertebrates represent a(n)

You have two species of Anolis lizard on an island.They both eat small insects.Because of favorable weather,one species reproduces exponentially.What effects will this have on the populations of both Anolis species and on the prey species?

All of the polar bears,seals,fish species,whales,seabirds and the Aleut people in the Aleutian Islands make up a(n)______.

How can an abiotic factor be a density-dependent factor as well? Give an example.

Which of the following can be used to monitor the health of a wild animal?

How does a high prey species population affect the population of a predator species?

In the Isle Royale study,why were wolf populations easier to accurately count than moose populations?

A population's growth rate depends on

A few years after a predator species population decreases,the ____.

A species of highly territorial individuals with limited territory and a large population is most likely to have a ____ distribution.

Which is NOT an abiotic factor that could affect a population?

Carrying capacity is the _____.

What is the difference between a community and an ecosystem?

In predator-prey relationships,scientists are interested in which level of organization?

The prey species on Isle Royale is the

Label each of the following with "D" for density-dependent or "I" for density-independent factors. A) _____ the presence of a predator reduces prey populations by 50% B) _____ competition for the same food resources C) _____ pollution in a river wipes out 50% of fish population D) _____ a winter storm wipes out 75% of a population E) _____ a flood drowns 80% of mammals