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Ecological Succession and Pioneer species
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Ecological Succession and Pioneer Species
Videos
http://www.cnn.com/videos/world/2015/02/28/pkg-orig-volcano-forms-new-island-japan.cnn/video/playlists/volcano-eruptions/
The Workers in Succession (Pioneer Species)
www.youtube.com/watch?v=8eO-7qm7fiY
Pioneer species are hardy organisms that can live in harsh environments.
Characteristics of Pioneer species
Especially in Primary succession, pioneer species need to establish a healthy soil.
Need little water/nutrients
Can travel long distances easily (spores, air travel)
Soil-dwelling microbes
Usually small and photosynthetic
There are 2 Types of Ecological Succession
Ecological Succession
Secondary Succession
Primary Succession
When once-populated land changes due to a major disturbance
Gradual process by which ecosystems change and develop over time.
When land previously unavailable to organisms becomes available for colonization.
Examples?
Process of Succession
After Disturbance:
1. Weathering/ pioneer species develop soil
2. Hardy plants grow and add organic material to the soil
3. Vegetation cover increases as community moves towards "climax"