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4-2 What Shapes an Ecosystem?

4-2 What Shapes an Ecosystem?. Pg. 90. A. Biotic and Abiotic Factors. 1. Biotic Factors- biological influences on organisms within an ecosystem. 2. Abiotic Factors- Physical or non-living influences on an ecosystem. Labeling ! A for Abiotic or B for Biotic. Water Fish Frog

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4-2 What Shapes an Ecosystem?

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  1. 4-2 What Shapes an Ecosystem? Pg. 90

  2. A. Biotic and Abiotic Factors • 1. Biotic Factors- biological influences on organisms within an ecosystem. • 2. Abiotic Factors- Physical or non-living influences on an ecosystem.

  3. Labeling! A for Abiotic or B for Biotic • Water • Fish • Frog • Rock • Dirt • Air • Plant • Bacteria

  4. B. The Niche • 1. Niche- full range of physical or biological conditions in which an organism lives and the way in which it uses those conditions. • Example: Warbler Niches Pg. 92

  5. C. Community Interactions • 1. Competition- Organisms of the same or different species attempt to use resources at the same place and at the same time.

  6. Brainstorm! • List 3 things in an ecosystem that you think organisms would compete for…….

  7. C. Community Interactions • 2. Predation- Interaction in which one organism captures and feeds on another organism.

  8. C. Community Interactions • 3. Symbiosis- Relationship in which 2 species live closely together.

  9. C. Community Interactions • 4. Mutualism- Situation in which both species benefit. (Type of Symbiosis)

  10. C. Community Interactions • 5. Commensalism-Situation in which one species benefits and one species is neutral. (Type of Symbiosis)

  11. C. Community Interactions • 6. Parasitism- One organism lives on or inside another organism and harms it. (Type of Symbiosis)

  12. Symbiotic Relationships Between 2 Species

  13. Types of Symbiosis

  14. Match Madness • Competition • Predation • Mutualism • Commensalism • Parasitism • Polar Bear catching fish • Barnacles on whale skin • Tapeworm in human intestines • Two Lions fight for food • Ant takes care of aphids, aphids feed ants T

  15. D. Ecological Succession • 1. Series of predictable changes in an ecosystem in response to natural and human disturbances. • Come up with one example of a NATURAL disturbance and a HUMAN disturbance to the environment. • Natural Disturbance-_________________ • Human Disturbance-_________________

  16. D. Ecological Succession • 1. Primary Succession- Succession on surfaces where there is no soil. • Example: Volcanic Eruption builds new islands; only ash and rock, no soil.

  17. D. Ecological Succession • 2. Secondary Succession- Restoration of an ecosystem after a disturbance. • Example: After a wild fire, trees begin to grow and other living things inhabit the area.

  18. Exit Ticket: Word Splash • Using the Words below, Write one paragraph using 5 complete sentences. • Biotic, Abiotic, Niche, Community Interactions, and Ecological Succession • Underline each of the words required in your paragraph please!

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