Population Dynamics Carrying Capacity and Conservation Biology G
Population Dynamics, Carrying Capacity, and Conservation Biology G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 9 Dr. Richard Clements Chattanooga State Technical Community College
Key Concepts Ø Factors affecting population size Ø Species reproductive patterns Ø Species survivorship patterns Ø Conservation biology and human impacts on ecosystems
Population Dynamics and Carrying Capacity Ø Population dynamics Ø Zero population growth (ZPG) Ø Biotic potential (intrinsic rat of increase [r]) Ø Environmental resistance Ø Carrying capacity Ø Minimum viable population (MVP)
Population Dispersion Fig. 9 -2 p. 191
Factors Affecting Population Size Fig. 9 -3 p. 192
Exponential and Logistic Growth Fig. 9 -4 p. 192 Fig. 9 -5 p. 193 Fig. 9 -6 p. 193
Population Density Effects Ø Density-independent controls Ø Density-dependent controls
Natural Population Curves Fig. 9 -7 p. 194
The Role of Predation in Controlling Population Size Ø Predator-prey cycles Ø Top-down control Ø Bottom-up control Fig. 9 -8 p. 195
Reproductive Patterns and Survival Ø Asexual reproduction Ø r-selected species Ø Sexual reproduction Ø K-selected species Fig. 9 -10 p. 196
Survivorship Curves Fig. 9 -11 p. 198
Conservation Biology: Sustaining Wildlife Populations Ø Investigate human impacts on biodiversity Ø Ideas for maintaining biodiversity Ø Endangered species management Ø Wildlife reserves and ecological restoration Ø Ecological economics Ø Environmental ethics Ø Wildlife management
Human Impacts on Ecosystems Ø Habitat degradation and fragmentation Ø Ecosystem simplification Ø Genetic resistance Ø Predator elimination Ø Introduction of non-native species Ø Overharvesting renewable resources Ø Interference with ecological systems
Learning from Nature Ø Interdependence Ø Diversity Ø Resilience Ø Adaptability Ø Unpredictability Ø Limits See Connections p. 200
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