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Ch. 19.1 Ecology continued pp.362-365

Ch. 19.1 Ecology continued pp.362-365. Biosphere = the entire earth The layer over the earth’s surface that supports life Atmosphere Oceans Soil, usually only a few meters deep. LEVELS OF ORGANIZATION. Ch. 19.1 Ecology continued pp.362-365.

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Ch. 19.1 Ecology continued pp.362-365

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  1. Ch. 19.1 Ecology continuedpp.362-365 Biosphere = the entire earth • The layer over the earth’s surface that supports life • Atmosphere • Oceans • Soil, usually only a few meters deep LEVELS OF ORGANIZATION

  2. Ch. 19.1 Ecology continuedpp.362-365 Ecosystem = all the living organisms and non-living parts found interacting in a particular place • The place is defined • Pond • One farm field, the land of NW IL & SW WI, the Great Lakes region… LEVELS OF ORGANIZATION

  3. Ch. 19.1 Ecology continuedpp.362-365 Community = the interactions of all living organisms in a defined place • All the plants, animals, fungi, bacteria… in a forest • (…or in a pond, or in the Great Lakes region) LEVELS OF ORGANIZATION

  4. Ch. 19.1 Ecology continuedpp.362-365 Population = group of the same species, in the same place, at the same time • The place is defined • Same • Species • Place • Time LEVELS OF ORGANIZATION

  5. Ch. 19.1 Ecology continuedpp.362-365 Organism level = all the interactions that involve an organism • Study of how the environment affects individual organisms LEVELS OF ORGANIZATION

  6. Ch. 19.1 Ecology continuedpp.362-365 Disturbance = any change in the environment and the effects it has on the interactions • No disasters in ecology, only disturbances • A forest fire is a disturbance • A flood is a disturbance… • Life goes on • A disturbance can lead to the “butterfly effect” LEVELS OF ORGANIZATION

  7. Ch. 19.1 Ecology continuedpp.362-365 Model = a representation of a real situation • Butterfly effect = when a disturbance starts small and grows to affect much of an ecosystem • Models are used to study ecology and test hypotheses LEVELS OF ORGANIZATION

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