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FW 491 – Online Ecological Module

FW 491 – Online Ecological Module. By: Jessica Caton. Introduction to Population Ecology. What is a population? A group of individuals of a single species inhabiting a specific area More info here…. Areas of study involved Population genetics Population dynamics. Population Dynamics.

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FW 491 – Online Ecological Module

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  1. FW 491 – Online Ecological Module By: Jessica Caton

  2. Introduction to Population Ecology • What is a population? • A group of individuals of a single species inhabiting a specific area • More info here…. • Areas of study involved • Population genetics • Population dynamics

  3. Population Dynamics • Definition: an area of population ecology concerned with the factors influencing the expansion, decline, or maintenance of populations, including rates of births, deaths, immigration, and emmigration (p. 222) • Possibly more here? • Tools used: life tables and survivorship curve

  4. Life Tables • Definition: a table of age-specific survival and death, or mortality, rates in a population (p. 230) • Types of life tables: • Cohort life table: a table based on individuals born (or beginning life in some other way) at same time (p. 230) • Static life table: a life table constructed by recording the age at death of a large number of individuals; a snapshot of survival within a population during a short interval of time (p. 231)

  5. Type of Life Table:Cohort • Discuss further • Example with penguins

  6. Type of Life Table:Static • Discuss further • Example with penguins

  7. Variables in Life Tables • nx • lx • mx • lxmx • R0 • R0 = ∑lxmx

  8. Age Distribution • Definition: the distribution of individuals among age groups in a population; often called age structure (p. 231)

  9. Survivorship Curve • Definition: a graphical summary of patterns of survival in a population (p. 231) • Type I, II, III

  10. Things to address/questions that came up… • Follow order of Molles textbook? (Patterns of Survival, Rates of Population Change headings…) • Use figures from textbook? • http://www.scioly.org/wiki/Ecology

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