Exam 9: From Populations to Communities

Anthropologists have long wondered what happened to the inhabitants of Easter Island.It is clear that part of the island was arable.Which of the following likely occurred after the island was depopulated?

If all trophic levels are being controlled by the abundance of resources available to plants it would be called _____________.

Some marine mussel communities do not change even after strong storms.They might be considered ______________?

According to Hairston et al.,why is the world green?

Approximately 20 years ago,a large fire burned through part of a national park.You are shown data that describe the species identified and enumerated over this 20 year period.These data show that some species colonized the land relatively fast.Those same species,however,are not present in the last 5 years of the data.Other species appear to maintain abundances throughout the 20 years.How would you characterize this process?

As succession proceeds:

Based on what you know about complexity and stability,if a model showed species richness was very high throughout a whole community,what would you expect community stability to be like?

Which choice accurately defines species richness?

A climax community:

Key factor analysis has been renamed because?