BIO 373 1st Edition Lecture 11 Outline of Last Lecture I. Complex life cycles contda. Functional specializationII. Populationsa. Issues when studying populationsb. Population ecologyc. Population dynamicsd. Population growthi. Exponential1. Continuous2. discreteOutline of Current Lecture I. Populationsa. Consequences of exponential growthb. Life tablesi. Cohort life tableii. Static life tableiii. Growth patterns1. Rapid, zero, negativeCurrent LecturePopulations- Consequences of exponential growtho Grow slowly when small Because N1 is small Extinction risk is higho Grow rapidly when large In humans, happened during the Industrial RevolutionThese 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.- Machinery and technology for agriculture, medicine, etc.- Life tableso Show how survival and reproduction rates vary with age, size, or life cycle stageo How many individuals are still alive, how many may go on to the next stageo Lx= survivorship Nx of current stage/Nx of originalo Sx= survival rate Nx of current stage/Nx of previous stageo Fx= fecundityo Cohort life table = fate of group of individuals born at same time Sessile plantso Static life table = survival and reproduction of individuals of different ages during a single time period Problem is, it is hard to estimate the age of organismso Life tables can be used to predict Age, structure, population size, lambdao Growth patterns Rapid growth- More births than deaths Zero growth- the maintenance of a population at a constant level by limiting thenumber of live births to only what is needed to replace the existing population Negative growth- the population is aging, and more deaths than
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