ecological succession n.
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Ecological Succession - PowerPoint PPT Presentation


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Ecological Succession. Succession : when old populations in an ecosystem are gradually replaced by new populations. This is a predictable change. Succession can be from a natural disaster or human activity.

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Succession: when old populations in an ecosystem are gradually replaced by new populations.

  • This is a predictable change
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Primary Succession cont.

Pioneer species: 1st species to occupy an area.

Ex – lichens (fungus & algae)

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2. Secondary Succession -restarts succession at a different point than that which occurs with primary succession.

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Succession proceeds at a quicker pace during secondary succession since soil is already pre-formed and ready for use by plants.

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climate changes (hurricane, drought)

  • human disturbances (clear cutting,
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A mature, stable community is known as a climax community.

One in which the populations of all organisms are in balance w/ each other & existing abiotic factors.