Exam 15: Biodiversity and Conservation

A one-hectare forest community is sampled in early August. The sample yields 12 small trees, 4 types of vines, as well as 17 native shrubs that represent 10 species. What can be estimated from the sample for the shrubs in the forest community?

Which of the following statements about extinction is false?

What might you find in the circled region?

Why is the US Endangered Species Act controversial?

Restoration ecology plays a large role in

Endemic species are organisms that are

What of the following best describes the overall goal of conservation biology?

Species richness is reduced when one species occupies a position of dominance within a community.

What are the four human causes of species endangerment and extinction? Which one is the single greatest threat? Give an example of a specific organism that has been harmed by each human activity.

What ecosystem service might be provided by a field of rosy periwinkles?

The number of different species in a community describes its

___________ is the incorporation of genes from one organism into a different species.

Define ecosystem services and discuss the ecosystem services provided by forests and coastal areas. Discuss how these services are altered by human activity.

The benefit of the Endangered Species Act is that it provides

In an ecosystem, where is species richness greatest?

_______ are protected zones that connect isolated unlogged or undeveloped areas.

Define extinction and discuss the major causes of extinction (a)in recent times and (b)before people existed on Earth.

When was the Endangered Species Act originally passed and what was its purpose?

A species that faces threats that may cause it to become extinct within a short period of time is known as a(n)___________.

What method of species conservation is illustrated below?