Exam 27: Conservation Ecology

Which of the following factors is most likely to shift the geographic ranges of many species, thus altering regional patterns of diversity?

In the past 100 million years, the number of species of which group of plants has been increasing?

By 2011, we had identified ________ species, while the speculated total number was closer to 9 - 10 million.

The establishment of habitat corridors between protected areas may have some negative consequences.

Conservations often attempt to restore a locally extinct population of a species through ________ into the wild of individuals from captive-bred populations

The end of the Permian period was characterized by a mass extinction of

Species living on isolated islands are especially vulnerable to extinction by

Most species of plants and animals have small, restricted geographic ranges.

Choose one of several mass extinction events of the past or present and discuss the potential cause(s)of the mass extinction.

The minimum viable population size is highest for this group of organisms.

As latitude increases, marine productivity ________.

The number of individuals necessary to ensure the long-term survival of a species is called the minimum ________ population.

The mass extinction of dinosaurs occurred at the end of the ________ period.

What single environmental factor is most likely to shift the geographic ranges of many species, thus altering regional patterns of diversity?

A species that migrates seasonally is more vulnerable to extinction than a sedentary species that does not migrate.

Degraded habitats cannot be restored even close to their original condition.

Variation in species richness of terrestrial species in North America correlates most strongly with estimates of

Discuss three mass extinction events in Earth's history, including the time when they occurred and the groups of organisms that were most affected.

Seasonal variation in surface temperatures of the ocean functions to increase primary productivity.

Explain why exotic species represent a threat to native species. Give an example of an exotic species threatening the survival of one or more native species.