BIO 101 Chapter 15 Communities.docx

BIO 101 Chapter 15 Communities.docx - BIO 1O1 Chapter 15...

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BIO 1O1 Chapter 15 “Communities” Overview 1. What is a community? 2. Factors that shape a Community 3. Interactions within the Community 4. Creative Defense Mechanisms. 5. Development of New Communities What is a Community? 1. All of the species—plants, animals, protists, bacteria, fungi . . . – that share the same Habitat. 2. Habitat: the physical environment of a community—forest, lake—where species coexist. 3. Niche: The position or role into which a species fits within a habitat—the part of the habitat occupied, the resources utilized and the services performed for community. Community + Habitat = Ecosystem 1. The living organisms work together as a food chain/web to convert natural resources to usable nutrients. 2. These nutrients get passed up the chain. 3. This defines an Ecosystem. Six Factors Affecting Communities 1. Climate & Topography of Habitat. 2. Available Natural Resources. 3. Physical Disturbances within Habitat.
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  • Summer '11
  • Ecology, a. Glacier

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