51. Community Ecology

A field contains 950 kg of plant material. How many kilograms of tertiary consumers could be supported?

Why does succession of communities occur?

What is the current view of biological communities?

Which of the following statements correctly describes conditions on a glacier moraine during the reign of pioneer species?

The feeding relationships among the species in a community determine the community'sa. secondary succession.b. ecological niche.c. species richness.d. trophic structure.

Based on the intermediate disturbance hypothesis, a community's species diversity is increased bya. frequent massive disturbance.b. stable conditions with no disturbance.c. moderate levels of disturbance.d. human intervention to eliminate disturbance.

According to the island equilibrium model, species richness would be greatest on an island that isa. large and remote.b. small and remote.c. large and close to a mainland.d. small and close to a mainland.

Pioneer species tend to have high and lower survivorship.