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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Processes that Structure Communities (DINS) |
- Dirsturbance - Interactions - Niche requirements - Stochastic (unpredictable) processes |
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Ecological Disturbance |
An event which kills organisms or removes biomass and opens up space in a community. - eg: fire |
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Disturbance Types |
- Geomorphic: relating to landscape form (eg, volcanoes, earthquakes, floods) - Climatic: eg, wind, drought, snow/ice. - Animal: eg, burrowing, trampling and wallows. - Anthropogenic: eg, human-caused disturbances. eg, deforestation. |
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Primary Succession |
- Primary: On a new un-inhabited substrate. Over time chemical and physical weathering by lichens and mosses builds up soil for larger plants. Eg, rangitoti island, sand dunes. |
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Secondary Succession. |
The original vegetation is destroyed but soil is intact. Some life still remain, such as seeds. Eg, fire, cyclone, snowfall. |
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Succession Adaptive Traits |
- Pioneer species: first arrivals, fast growing and hardy. - Late successional species: slow growing, delicate, shade tolerant, good competitor. |
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Disturbance Adapted Communities |
- rely on regularly occurring disturbances (eg eucalypt forest fires) - require disturbance for regeneration or to complete their life cycle. |
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Succession Community Structure |
- Species richness increases - Species comp changes as species shift from early to late succession. - Species change their environment (eg soil) |
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Wave Regeneration |
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How Wave Regeneration Occurs (OPEN HINT) |
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