Exam 18: Community Dynamics

An old pine tree in the front yard is beginning to die as the neighborhood deciduous trees have grown.Why might this be?

In succession,which type of environmental change occurs when the physical environment changes,such as an increase in temperature or salinity?

Early successional species are referred to as ________ species.

According to Grime,which strategy is followed by stress-tolerant species?

Succession that occurs on a site that was previously unoccupied by another community is called ________ succession.

The sequence of communities from the pioneer community to the climax community is called a(n)________.

Chronosequences are useful because one can

Habitats in which resources are limited favor ________ species that allocate resources to maintenance.

Although community composition changes during succession,diversity rarely changes.

Recent data indicate what regarding forests in eastern North America?

________ environmental change is a direct result of the organisms within the community.

Early successional species are characterized by

Succession does not occur in communities subjected to periodic disturbances.

An example of secondary succession is

Which of the following is considered a ruderal species?

Autogenic environmental change always occurs in plant succession.

The organismal view of communities is a ________ concept,while the continuum view of communities is a ________ concept.

Which of the following are late successional species?

What is the resource-ratio hypothesis?

The ________ model of succession proposes that later successional species are neither inhibited nor aided by species of earlier stages.