Lecture Notes on Population Growth - Ecology | PCB 3043, Study notes of Ecology and Environment

Download Lecture Notes on Population Growth - Ecology | PCB 3043 and more Study notes Ecology and Environment in PDF only on Docsity! Lecture 8 Population Growth Goals: Know three models of population growth Be able to calculate and interpret growth rates of populations growing geometrically Be able to calculate and interpret growth rates of populations growing exponentially Understand how to use a life table to calculate population growth rate Know how to calculate reproductive rate and generation time for a population Understand the logistic population growth model and effects of density dependence Outline: Review population structure, variables and their abbreviations Three models of population growth: geometric, exponential, logistic Population growth is not additive but multiplicative 1. Geometric Population Growth a. Graphic representation b. Mathematical representation c. Definition and ranges of growth rate (lambda) d. Discrete vs. continuous reproduction 2. Exponential Population Growth a. Graphic representation b. Mathematical representation c. Using life tables to calculate growth rate i. Cohort life tables ii. Static life tables 1. Reproductive rate (R) – mathematical definition 2. Generation time (T) – mathematical definition 3. Intrinsic rate of growth (r) – mathematical definition and ranges 3. Logistic Population Growth a. Definition of carrying capacity (K) b. Graphic representation c. Mathematical representation d. Density-dependent vs. density-independent effects on population growth