Species-Level Conservation
- Box 13.1 Success Story: Record-Breaking Recovery: Island Foxes of California
Goals of Species-Level Conservation
Challenges to Conserving Small Populations
- Demographic stochasticity
- Environmental stochasticity
- Loss of genetic variability
Effective Population Size
- Determining effective population size
- Unequal sex ratio
- Variation in reproductive output
- Population fluctuations and bottlenecks
Extinction Vortices
Estimating Population Size
- Census
- Box 13.2 Conservation in Practice: Estimating Animal Density: The Distance Sampling Approach
- Capture-mark-recapture techniques
- Box 13.3 Case in Point: Detector Dogs Support Research and Conservation Efforts
Models of Population Size
- Geometric growth model
- Exponential growth model
- Logistic growth models
- Age- and stage-based models
- Stochastic models
Predicting Population Persistence
- Minimum population size
- Population viability analysis
Conservation Trade-Offs