Exam 16: Community Structure

The species at the top of a food web

A straight-line diagram illustrating the flow of food energy from prey to predator is referred to as a food ________.

The total number of observed links in the food web divided by the total number of species is the

The organismic concept views communities as clusters of species associating together as an interacting,integrated component.

What might be a result of hunting sea otters to extinction for their fur?

Dominance is the converse or opposite of diversity.

Every community has an associated vertical structure.

Zonation within a community is typically the result of differences in the

Which of the following physical structures would a lake possess?

In a rank-abundance curve comparing two communities,the community with the greater species richness is characterized by a

Ecologists use a variety of useful sampling and statistical techniques for delineating and classifying communities.

Which of the following groups of species represents a guild?

A key limitation of the coefficient of community is that it lacks the ability to

In aquatic habitats,the bottom zone where decomposition is most active is referred to as the ________ zone.

In which of the following zones would you most likely expect to find flounders (a type of fish)?

Changes in the physical and biological structures of communities as one moves across the landscape are referred to as ________.

Most communities have many common species and a few rare species.

During the summer,the bottom,cold layer of dense water in a well-stratified lake is called the ________.

In a forest community,the layer containing tall shrubs,small trees,and young trees is called the ________.

In a well-stratified lake in summer,the subsurface layer of water,which is characterized by a steep and rapid decline in temperature with depth,is called the