BIOA02H3 Study Guide - Midterm Guide: Genetic Drift, Optimal Foraging Theory, Diapause

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Robin Marushia

Document Summary

Nature provides us with provisioning services, regulating supporting services and cultural services. Ecology: interactions between organisms (biotic factors) and their environment (abiotic factors) Environmental science: focuses on solutions and environment problems. incorporates concepts of natural science and social sciences. All species interact with others species indirectly linked by resources. Energy moves through ecosystems in a single direction, cannot be recycled. Nutrients are recycled from the physical environment to organisms and back. Small temporal scales: leaves reaction to sunlight (10 seconds) Large temporal scales: species change over geologic time (100,000years) Lecture 2 how does the scientific method work. Ecologist watches happy bear, wonders why bear is happy. Reach conclusion or ask ecologist evaluate competing hypotheses about natural systems with experiments, observations, and models. Lab experiments>small scale field experiments>large scale ecosystem experiments. Spatial time scale >>>temporal time scales experimental design. Replicate- perform each treatment more than once. Case study: deformity and decline in amphibian populations.