Unit 5: Ecological Succession

Front

What are pioneer species?

Back

Pioneer species are the first organisms to colonize previously uninhabited or disturbed environments, initiating the process of ecological succession.

Front

What role do pioneer species play in ecological succession?

Back

Pioneer species create conditions that allow other species to grow, contributing to increased biodiversity.

Front

What is primary succession?

Back

Primary succession is the process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption.

Front

What is secondary succession?

Back

Secondary succession is the process of ecological change that occurs in an area where soil is already present, often following disturbances like forest fires or floods.

Front

What is the main difference between primary and secondary succession?

Back

The main difference is the presence of soil at the start; primary succession begins without soil, while secondary succession starts with existing soil.

Front

What are some examples of pioneer species in primary succession?

Back

Examples of pioneer species in primary succession include lichens and mosses.

Front

What event is most likely to trigger primary succession?

Back

A volcanic eruption is a key event that can trigger primary succession by creating new land without soil.

Front

Why does secondary succession occur more rapidly than primary succession?

Back

Secondary succession occurs more rapidly because soil is already present, allowing for quicker establishment of plant life.

Front

What is a climax community?

Back

A climax community is a stable and mature ecological community that has reached the final stage of succession.

Front

How do disturbances affect ecological succession?

Back

Disturbances can reset the succession process, leading to either primary or secondary succession depending on the conditions.