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Unformatted text preview: rainfall, no offspring, while significant rainfall= high reproduction. Weather is density independent factor. • Some biotic factors that are density independent: beech crop index vs juveline survival. Biotic and Abiotic: Red squirrels in UConn • Temperature affects seed production, the seed production affects the juvenile survivorship • In mast years, squirrels produce 2 litters. This increase is due to the increase in food, not weather. Demographic variability (Dtochasticity): population analog of genetic drift. seed 0.5 flowering adult age lx mx 1 1 0.5 3 R =1.5, because 0*1+3*1.5 The smaller the population, the higher the variation from the exponential growth model Density dependent factor graph= has a decrease in population. Self-Thinning:...
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