BIOL 2060 Lecture Notes - Lecture 7: Dall Sheep, American Robin, Life Table
19 Feb 2016
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At any given time (snap-shot: count number of individuals, count births and deaths, determining age, sex, find biomass, monitor changes over time. Factors: natality = births (+, mortality = deaths (-, immigration (+, emigration (-) Analyze past trends, present status, making future. Look at all factors to determine if population is growing, stable, or declining. Nt+1 = nt + b d + i e. Nt+1 = number of individuals one step ahead. Nt = number of individuals at time t. Monitoring coyote population in bay of fundy park. N2005 = 128 + 44 36 + 12 10. = 138: how much as population increased from. E. g. life history strategies: within species. E. g. environmental variation: within populations, cohort life table. E. g. age differences records from birth: static life table, age distribution. Group of individuals born at the same time and keep. Calculate difference in proportion of individuals in each age class: ex. Analyze skulls to determine age of death.
