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Unformatted text preview: LECTURE #11 MAIN POINTS The time for mammals Mammalian ancestors appeared before dinosuars. Only small creatures survived the asteroid. From a shrew-like beginning placental mammals increase. Three lines of mammals. Our story. LECTURE #12 MAIN POINTS Behavioral ecology. Animal behavior a new field and its origins. Evolution and behavior proximate vs. ultimate explanations and fitness. Foraging behavior bluegills and plants. Additional considerations for fitness (relative fitness). Living in groups (benefits and costs). Kin selection and tit-for-tat. How do we fit in? TOPIC #11 MAIN POINTS Dr.Tatiana's Sex Advice Why are there so many ways to mate?. Mantids, burying beetles and lions protecting resources. Fruit flies and the cost of sperm. Marine iguanas and masturbation. Manatees and homosexuality. Vultures and monogamy. Response in US best-seller, video banned, anti-evolution. Evolution makes us think in new ways about ourselves. LECTURE #14 MAIN POINTS Populations Populations are like bank accounts. Survivorship curves tell us about the rigors of life. Modeling populations. Exponential growth. Malthus and density dependence. Human population growth. Harvesting. LECTURE #15 MAIN POINTS Communities Summary of biotic interactions (+/-). Competition and the niche. Predation importance to individuals vs. population. Combining competition and predation. Mutualism and commensalism. Biotic vs. abiotic factors. Communities affect our health and are complex. LECTURE #16 MAIN POINTS Ecosystems Food web terminology and structure. Food web patterns. Decomposition energy flows/nutrients cycle. Macro- and micro-decomposers. Common nutrient cycles. What controls production on land and in water? Does biodiversity matter in ecosystems? Primary and secondary succession. LECTURE #17 MAIN POINTS Biomes of the world Biomes are different ecosystems Biomes are a type of biodiversity. Biomes differ in primary production in toto and per area. Characteristics of different terrestrial biomes. LECTURE #18 MAIN POINTS Environmental degradation Increasing human population. Increasing human demand for resources. Increased nitrogen deposition. Increasing carbon dioxide. Climate change. We were and are susceptible to climate change. Habitat destruction and invasive species destroy biodiversity we are a problem. ...
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- Spring '08