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Community Ecology: Structure, Species Interactions, Succession, and Sustainability

Community Ecology: Structure, Species Interactions, Succession, and Sustainability. G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 8. Dr. Richard Clements Chattanooga State Technical Community College. Key Concepts. Community structure. Roles of species.

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Community Ecology: Structure, Species Interactions, Succession, and Sustainability

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  1. Community Ecology: Structure, Species Interactions, Succession, and Sustainability G. Tyler Miller’s Living in the Environment 13th Edition Chapter 8 Dr. Richard Clements Chattanooga State Technical Community College

  2. Key Concepts • Community structure • Roles of species • Species interactions • Changes in ecosystems • Stability of ecosystems

  3. Community Structure: Appearance and Species Diversity • Stratification Fig. 8-2p. 166 • Species diversity • Species richness • Niche structure • Edge effects

  4. Biodiversity Ants Birds Fig. 8-3 p. 167 • Latitude • Depth • Pollution • Theory of island biogeography

  5. General Types of Species • Native • Non-native (exotic or alien) • Indicator • Keystone

  6. Species Interactions: Competition • Intraspecific competition • Interspecific competition • Interference competition • Exploitation competition • Competitive exclusion principle • Resource partitioning

  7. Resource Partitioning Fig. 8-9 p. 175; Refer to Fig. 7-13 p. 152 & Fig. 8-10 p. 175

  8. Species Interactions: Predation • Predator • Prey • Prey acquisition • Predator Avoidance Refer to Fig. 8-11 p. 177

  9. Symbiotic Species Interactions: Parasitism • Parasite • Host • Endoparasites • Ectoparasites

  10. Symbiotic Species Interactions: Mutualism • Reproductive mutualism: pollination • Nutritional mutualism • Nutritional/protection mutualism Fig. 8-12 p. 179

  11. Symbiotic Species Interactions: Commensalism • Indirect: i.e., small plants growing in shade of larger plants • Direct: i.e., epiphytes, remoras Fig. 8-13 p. 180

  12. Ecological Succession: Communities in Transition • Primary succession • Secondary succession • Pioneer species • Successional species

  13. Primary Succession Fig. 8-14 p. 180

  14. Secondary Succession Fig. 8-15 p. 181

  15. Succession and Wildlife Fig. 8-16 p. 182

  16. The Rate of Succession • Facilitation • Inhibition • Tolerance Refer to Table 8-1 p. 182

  17. Ecological Stability and Sustainability • Disturbance • Climax community • Inertia Refer to Table 8-2 p. 193 • Constancy • Resilience • Precautionary principle

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