Download presentation
Presentation is loading. Please wait.
1
Succession in Ecosystems
2
Succession a series of changes in a community in which new populations of organisms gradually replace existing ones
3
Primary Succession colonization of new sites by communities of organisms takes place on bare rock
4
New bare rock comes from 2 sources:
Primary Succession New bare rock comes from 2 sources: 1. volcanic lava flow cools and forms rock 2. Glaciers retreat and expose rock
5
Pioneer Species the first organisms to colonize a new site
Ex: lichens are the first to colonize lava rocks
6
Primary Succession
7
a stable, mature community that undergoes little or no succession
Climax Community a stable, mature community that undergoes little or no succession
8
Climax Community Ex: In most of Virginia, the climax community would be a deciduous oak–hickory forest
9
Primary Succession Rock
10
takes place on existing soil
Secondary Succession sequence of community changes that takes place when a community is disrupted by natural disaster or human actions takes place on existing soil
11
Secondary Succession Ex: A fire levels portions of a forest
12
Secondary Succession Ex: A farmer plows his field
13
Secondary Succession
14
Secondary Succession
15
Pond Succession
16
Pond Succession
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.