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Ecology (succession)
Succession
13
Environmental Studies
Undergraduate 4
05/07/2008

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Cards

Term

Succession

Definition
The change in plant, animal and microbial communities in an area following disturbance or creation of a new subtrate.
Term
Pioneer Community
Definition
The first plants in a succesional sequence. Most common are Horseweed.
Term
Primary Succession
Definition
Plant succession on newly formed soils.
Term
Secondary Succession
Definition

Occurrs on areas where disturbance destroys a community without destroying the soil.

 

Example: Forest Fires

Term
Climax Community
Definition
A community whose population remains stable until disrupted by disturbance.
Term
Chronosequence
Definition
The sequences of age represented by ecosystem change.
Term
Facilitation Model
Definition
Proposes that many species may attempt to colonize newly available space, but only certain species that can be facilitated by the space that is no longer suitable for the pioneer species will be established.
Term
Tolerance Model
Definition
Enviornment is less suitable for pioneer species but only favorable for the species that can tolerate the enviornmental change.
Term
Inhibition Model
Definition
Pioneer species inhibit colinization by later species. Late successional species come to dominate because the can resist damage due to biological factors.
Term
Stability
Definition
The absence of change due to no disturbance, resistance or resilience.
Term
Resistance
Definition
The ability of a community to maintain structure/function in the face of disturbance.
Term
Resilience
Definition
The ability to bounce back after a disturbance.
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