Unit 3 Ecology, Part 2

Front

What is the term for a dispersion pattern where organisms are grouped together?

Back

Clumped dispersion is a pattern where organisms are found in groups or clusters.

Front

What type of population growth occurs when resources are unlimited?

Back

Exponential growth is a rapid increase in population size when resources are abundant.

Front

What is species richness?

Back

Species richness refers to the number of different species present in a given habitat.

Front

Where does primary succession occur?

Back

Primary succession occurs in lifeless areas, such as a quarry where bedrock has been exposed.

Front

What is the difference between logistic and exponential growth models?

Back

Logistic growth shows a population leveling off as it reaches carrying capacity, while exponential growth continues to increase without limits.

Front

What is species evenness?

Back

Species evenness measures how similar the abundances of different species are in a community.

Front

What is a characteristic of a uniform dispersion pattern?

Back

In uniform dispersion, individuals are evenly spaced throughout an area.

Front

What is the carrying capacity of an environment?

Back

Carrying capacity is the maximum population size that an environment can sustain indefinitely.

Front

What is the significance of keystone species in an ecosystem?

Back

Keystone species have a disproportionately large impact on their environment relative to their abundance.

Front

What is secondary succession?

Back

Secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact.