Chandeleur Islands in Lousiana before and after Katrina

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Presentation transcript:

Chandeleur Islands in Lousiana before and after Katrina Disturbance- An event caused by physical, chemical or biological agents that results in changes in population size or community composition. Chandeleur Islands in Lousiana before and after Katrina

Watershed- All of the land in a given landscape that drains into a particular stream, river, lake or wetland.

Resistance vs. Resilience Resistance- A measure of how much a disturbance can affect its flows of energy and matter. Resilience- The rate at which an ecosystem returns to its original state after a disturbance. Restoration ecology- A new scientific discipline that is interested in restoring damaged ecosystems.

The intermediate disturbance hypothesis- states that ecosystems experiencing intermediate levels of disturbance are more diverse than those with high or low disturbance levels.

Instrumental Values of Ecosystems Provisions- Goods that humans can use directly. Regulating services- The service provided by natural systems that helps regulate environmental conditions. Support systems- The support services that natural ecosystems provide such as pollination, natural filters and pest control. Resilience- Resilience of an ecosystem ensures that it will continue to provide benefits to humans. This greatly depends on species diversity. Cultural services- Ecosystems provide cultural or aesthetic benefits to many people.