Exam 53: Population Interactions and Community Ecology

Colonization rates from one habitat patch to another are ____ and extinction rates within habitat patches are ____ in contiguous habitats than on islands. ​

A climax community is ____. ​

More _____ need to be studied in order to find out whether interspecific competition strongly influences the species composition and structure of most communities. ​

What is the difference between a decomposer and a detritivore?

Which interaction is advantageous for one species, but has a negative effect on the other? ​

Which concept helps visualize resource use and the potential for interspecific competition in nature? ​

Tertiary consumers feed directly on _____. ​

A keystone species has a greater effect on community structure than its numbers might suggest.

The individualistic view of communities proposed by ____ is supported by data showing that species compositions change gradually across environmental gradients. ​

The colonization of Glacier Bay, Alaska by lichen and mosses allowed the growth on the mountain avens, a(n)____ species. ​

A panda bear that consumes a diet primarily of eucalyptus leaves is a ____. ​

An example from the text contrasts two forests, each with 10 species and a total of 50 trees. In the first forest, 39 of the 50 trees represent the dominant species. The second forest has 5 of each of the 10 different species. What conclusion can be drawn regarding these two forests? ​

A cougar investing more time hunting a mountain goat than a jackrabbit is an example of ____. ​

Which interaction is advantageous to both populations? ​

Sympatric populations are able to coexist without competing for resources due to morphological differences known as ____. ​

According to the intermediate disturbance hypothesis, species richness is greatest in communities that experience ____. ​

According to the ____, new species are prevented from entering a community by the existing species. ​

Which factor(s)determine a species' optimal foraging theory? ​