Environmental disturbances

Definition

Environmental disturbances are events that disrupt the structure and function of an ecosystem, affecting population dynamics and community interactions. These can be natural or anthropogenic, such as fires, storms, or human activities like deforestation.

5 Must Know Facts For Your Next Test

1. Environmental disturbances can lead to changes in species diversity and abundance within a community.
2. Primary succession occurs in lifeless areas where soil has yet to form, whereas secondary succession happens in areas where a disturbance has destroyed an existing community but left the soil intact.
3. Disturbances can create opportunities for new species to colonize an area, potentially leading to increased biodiversity.
4. The Intermediate Disturbance Hypothesis suggests that moderate levels of disturbance can maximize species diversity by preventing competitive exclusion.
5. Keystone species may play a crucial role in how communities respond to environmental disturbances due to their significant impact on ecosystem structure.

Related terms

Succession: The process by which the structure of a biological community evolves over time.

Keystone Species:

A species on which other species in an ecosystem largely depend, such that its removal would drastically change the ecosystem.

Intermediate Disturbance Hypothesis: A concept suggesting that local species diversity is maximized when ecological disturbance is neither too rare nor too frequent.