Chapter 22 Flashcard

Front

What is biodiversity?

Back

Biodiversity refers to the variety of different organisms within a particular ecosystem, including the diversity of species, genetic variation, and ecosystem diversity.

Front

Why is high biodiversity important for ecosystems?

Back

High biodiversity increases ecosystem resilience, allowing it to better withstand environmental changes and disturbances.

Front

What is primary succession?

Back

Primary succession is the process of ecological change that occurs in an area where no soil exists, starting with bare rock and leading to the establishment of a biological community.

Front

What is secondary succession?

Back

Secondary succession is the process of ecological change that occurs in an area where a disturbance has destroyed an existing community but left the soil intact.

Front

What role do lichens play in primary succession?

Back

Lichens are often the first organisms to colonize bare rock in primary succession, helping to break down the rock and create soil.

Front

What is a climax community?

Back

A climax community is a stable and mature ecological community that has reached a steady state of development and biodiversity.

Front

How does a forest fire lead to secondary succession?

Back

After a forest fire, the soil remains intact, allowing for rapid regrowth of plants and the re-establishment of the ecosystem through secondary succession.

Front

What factors contribute to high biodiversity in an ecosystem?

Back

Factors include a variety of habitats, climate stability, and the presence of different species that can occupy various ecological niches.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs on bare rock without soil, while secondary succession occurs in areas where soil is present after a disturbance.

Front

How does biodiversity affect ecosystem services?

Back

Higher biodiversity enhances ecosystem services such as pollination, nutrient cycling, and water purification, benefiting human populations.