Bio II Slide Set XIV

Bio II Slide Set XIV - Ecology Unit IV Monday, June 13,...

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Unformatted text preview: Ecology Unit IV Monday, June 13, 2011 I. Ecology A. Factors affecting distribution and abundance of a species 1. Abiotic 2. Biotic B. Hierarchy of ecological study II. Population ecology A. Why study population ecology B. Properties of populations 1. Size, density, dispersion, sex ratio, age structure 2. Life tables 3. Energy allocation and tradeoffs 4. Life history 5. Survivorship curves ECOLOGY: Slide Set XIII Monday, June 13, 2011 II. Population ecology C. Population dynamics 1. Factors affecting population size 2. Models of population growth a. exponential population growth i. pattern ii. mathematical model b. logistic growth i. pattern ii. mathematical model c. examples 3. Growth in natural populations a. regulated (density-dependent) growth i. factors that can regulate growth b. unregulated (density-independent) growth i. factors that can affect growth c. Examples and applications (including human population growth) Monday, June 13, 2011 I. ECOLOGY The study of the interactions between organisms and their environment . Monday, June 13, 2011 1. abiotic components - nonliving chemical and physical factors I. ECOLOGY The study of the interactions between organisms and their environment . Monday, June 13, 2011 1. abiotic components - nonliving chemical and physical factors 2. biotic components - living components (= all the organisms in a particular envir.) I. ECOLOGY The study of the interactions between organisms and their environment . Monday, June 13, 2011 1. abiotic components - nonliving chemical and physical factors 2. biotic components - living components (= all the organisms in a particular envir.) I. ECOLOGY The study of the interactions between organisms and their environment . A. InFuential environmental components (affect distribution & abundance of organisms in the environment: Monday, June 13, 2011 Abiotic factors: physical: temperature humidity light wind soil/substrate structure Fre topography/physical structure chemical: water oxygen pH salinity minerals, nutrients Biotic factors: predation (between different species) competition (within a species) density disease parasitism 3000+ yrs old! Monday, June 13, 2011 8th:52.2 7th: 50.2 In ecology, one asks: what biotic and abiotic factors inFuence the distribution and abundance of organisms. What are some causes of this observed roo distribution? AND: Why no roos on Tasmania? Monday, June 13, 2011 ASK: does feeding by sea urchins limit seaweed distribution? 8th: 52.8 Indicative of biotic interactions Monday, June 13, 2011 Possible factors limiting the geographic distribution of a species 8th: 52.6; 7th: 50.6 This highlights the fact that ECOLOGY is a multidisciplinary Feld of study....
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This note was uploaded on 06/13/2011 for the course BIOLOGY bsc2011 taught by Professor Dr.spears during the Spring '10 term at FSU.

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Bio II Slide Set XIV - Ecology Unit IV Monday, June 13,...

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