BIOL 12100 Lecture Notes - Lecture 14: N100, Exponential Growth, Nokia N900
24 Feb 2015
School
Department
Course
Professor
Document Summary
Group of interbreeding organism of some species in same area. Rate of growth depends # of individuals. N = 0. 01 * 2^30 = . 24. Breed repeatedly and at any time overlapping generation (humans) R = intrinsic rate of integrate average birth rate are death rate (r = birth rate - death rate) N/ t = rn = (0. 028)(1000) = 28/day. N/ t = rn predict growth rate (continuously breeds) N = noe^(rt) predict population size (continuously breeds) Ro(# female produced / females) vs r (birth rate - death rate) Rate of growth slows as reach max. N=100, n/ t = 0. 3(100)[(1000-100)/1000] = 27. N=500, n/ t = 0. 3(500)[(1000-500)/1000] = 75. N=900, n/ t = 0. 3(900)[(1000-900)/1000] = 27. N = k/2 = maximum growth rate. K change in population overshoot of k. 1880s => cattle => grazed in delta 2. Same % individuals impacted regardless of population size. Abiotic => climate, weather, fire, floods, hurricanes.
