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Transcript
Community Ecology G. Tyler Miller’s Living in the Environment 14th Edition Chapter 8 Key Concepts Community structure Roles of species Species interactions Changes in ecosystems Stability of ecosystems Community Structure and Species Diversity Appearance Species diversity Species richness Niche structure Edge effects Fig. 8-2 p. 144 Biodiversity Latitude Depth Pollution Fig. 8-3 p. 145 Theory of island biogeography General Types of Species Native Non-native (exotic or alien) Indicator Keystone Foundation Species Interactions: Competition Interspecific competition Predation Parasitism Mutualism Commensalism Resource partitioning Bad_Day.mpeg Resource Partitioning and Niche Specialization Refer to Fig. 8-8, p. 151 Fig. 8-7 p. 150 Species Interactions: Predation Predator Prey Prey acquisition Predator avoidance Refer to Fig. 8-9 p. 153 Symbiotic Species Interactions: Parasitism Parasite Host Important ecological roles of parasites Symbiotic Species Interactions: Mutualism Pollination mutualism Nutritional mutualism Gut inhabitant mutualism Fig. 8-10, p. 155 Symbiotic Species Interactions: Commensalism Species interaction that benefits one and has little or no effect on the other Example: Small plants growing in shade of larger plants Ecological Succession: Communities in Transition Primary succession Secondary succession Pioneer species Successional species Primary Succession Fig. 8-11 p. 157 Secondary Succession Fig. 8-12 p. 158 The Rate of Succession Facilitation Inhibition Tolerance Ecological Stability and Sustainability Disturbance Climax community Inertia Constancy Resilience Precautionary principle