RENR 205 Study Guide - Midterm Guide: Peepers, Intraspecific Competition, Pinus Palustris
18 Oct 2017
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Geometric growth: discrete reproduction (breed once a year) Lambda ( ) is the ratio of population size at the end of a discrete time period to that at the beginning. Example 1: the manager of a white-tailed deer population surveyed the population 2 years in a row, counting the number of females. Lambda = 232/196 = 1. 18 (means it"s growing) Example 2: if there are 150 cheatgrass plants in a single plot of land at year. 6 and the population is growing with a finite rate of increase (lambda) of. 1. 6, approximately how many plants were in the initial invasion at time 0. Example 3: as a final waterhemp example, if initial population size, n0, is 10 and is around 1. 35, we can calculate the estimated population size at year. Assume : staphylococcus grow exponentially r = 1. 386 h^-1. Logistic growth: (dn/dt) = rn(1 -n/k) dn/dt = instantaneous growth rate dn/dtn = per capita growth rate.
