BIOLOGY 171 Lecture Notes - Lecture 14: Intraspecific Competition

• School: U of M
• Department: Biology
• Course: BIOLOGY 171
• Professor: Josephine Kurdziel

Document Summary

N1= number of individuals at time 1. N0= number of individuals at time 0. Lambda expresses a population"s growth rate over a discrete interval of time. R is the per capita growth rate showing population growth at any particular instance in time (instantaneous growth rate) And r are related: =er and r=ln . Nt+1= #individuals at one time in the future. **can only be used to predict from one time to the next (cannot skip to future) Nt= #individuals at any time in future. Er replaces lambda for instantaneous growth t=time. Populations are growing when > 1 or r>0 (+) Populations are shrinking when <1 or r<0 (-) N/ t shows the average population growth over a period of time. Dn/dt shows the instantaneous growth rate (derivative @ a specific point) Rmax= idealized, theoretical value representing the max rate of increase under ideal conditions (highest b lowest d) Doubling r has greater affect than doubling initial population.