Exam 4: Ecology and Geology

Sea urchins help preserve kelp in kelp forests.

Seawalls can decrease biodiversity by narrowing beaches.

A volcano that erupts with frequent, moderate eruptions is more likely to increase biodiversity than is a volcano that erupts with major eruptions.

A(n) ________ species has an effect on its ecological community disproportionate to its abundance.

The dominant processes in an ecosystem are

________ was a prominent scientist who advocated the use of an appropriate time scale in analyzing the environmental crisis.

Mountain ranges may have influenced biodiversity of trees in Europe and North America.

Succession of tree species should be a common process in an avalanche chute.

Wolves in Yellowstone National Park reduced streamside willows by forcing the elk to take cover in the stream channels.

A(n) ________ is a group of populations of different species living in the same area with varying degrees of interaction with each other.

The Kissimmee River ecosystem benefited greatly from stream channelization and flood control.

Ecosystems can be constructed by humans.

An ecosystem involves only the living organisms in a region.

Restoring the Everglades ecosystem will require

Landslides in Southern California mountains can benefit steelhead trout.

The ________ of a sea urchin in a kelp forest is eating kelp.

Wolves and sea otters are examples of ________ species.

The ________ of a region includes all living organisms living there.

As an ecosystem evolves following disturbance, it follows the path of

A(n) ________ of coastal marshes is the prevention of coastal erosion.