Lecture 8: Stage-Structured Population Growth

Question 1

If abundance remains unchanged…

Answer 1

• pop grows @ constant rate (lambda)
• each age class grows @ same rate
• –> age structure (proportion of individuals in each age class) is constant

–> stable age distribution

Question 2

In stable age distribution…

Answer 2

• fixed schedule of natality and mortality rates (regardless of initial age distribution)

Differential (exponential) growth equation:
dN/dt = rN