1. Aim: How do ecosystems change over time?
DN: Describe the Carbon Cycle.

2. Ecological Succession
The process by which an ecosystem changes over time – often from a barren piece of land to a complex ecological community.. 2 5 4 1 3

3. Ecological Succession In a Forest
As time passes grasses grow & then get replaced by shrubs and eventually a forest will form.
Why do the grasses disappear?
The large shrubs and trees prevent light from reaching the grasses.

4. Pioneer Organisms: first organisms to inhabit a given location
Changes
The community modifies the environment
Environment is now stable for the next community
Climax Community
Community that is stable
Population is in balance

5. Ecological Succession in Ponds & Lakes:
As time progresses, the pond gets filled in with dead organic matter. The dead organic matter takes the place of the water in the pond or lake.
Eventually a forest forms where the pond once was.

6. What is the final state of ecological succession
A climax community with great
biodiversity.

8. Destruction of Climax Communities
Fires, volcanic eruptions, tsunamis, deforestation, acid rain.
Their destruction often (but not always) means the birth of a NEW community via succession.

10. Measure the depth & width of the pond in mm