18: Community Dynamics Flashcards Preview

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Flashcards in 18: Community Dynamics Deck (14)
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1

community dynamics

the changing pattern of community structure through time

2

things that change community structure

seasonal changes, life history changes, disturbances

3

succession

a temporal change in community structure and composition (change across time for a given space)

4

zonation

change across space

5

pioneer or early successional species

fast growing, high dispersal, smaller size, light loving

6

late successional species

slow growing, low dispersal, large and long lived

7

During succession, is the replacement of species with time random?

NO!

8

Primary succession

occurs on a site previously unoccupied by a community

9

secondary succession

occurs on previously occupied sites after a disturbance resets the community

10

community dynamics is a result of what?

environmental change

11

classification of change

Autogenic vs. Allogenic

12

Autogenic Environmental Change

direct result of the presence and activities of organisms within the community (biotic in nature)

13

Allogenic Environmental Change

feature of the physical environment (ex. precipitation)

14

what is plant succession liked with

succession in heterotrophs