Biol 2061 1st Edition Lecture 17 Outline of Last Lecture I. Hierarchy of ScalesII. BiodiversityIII. ClimateIV. Area effectsV. History dispersal factorsVI. Ecological/ biotic interactionsVII. Human factorsOutline of Current Lecture I. PopulationII. DensityIII. DemographyIV. Life tablesCurrent LectureI. Population-a. A group of interbreeding individuals occupying the same habitat at the same time.i. Examples= elk and prairie dogs.b. Population ecology= study of how populations grow and what promotes and limits growth.i. Sampling quadrants, mist nets, transect, trap, bands and chips.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.II. Density-a. Number of organism in an areab. Resources, predators and disease determine densityc. Density determines species interactionsIII. Demography-a. Cohort= group of individuals at the same age or stageb. Reproductive strategy is important!i. Semelparous organisms reproduce only once in their lives.1. Called the “Big Bang” (all at the same time) a. Troutii. Iterparous organisms produce more than once in their adult lives.IV. Life tables-a. Data on the number of individuals alive in particular age classi. Males are not included because they don’t reproduceii. A good example would be the North American beavers1. Trappers provided mandibles2. Teeth were extracted for age
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