Life Tables and Population Structure Flashcards
Life tables are used to visualize:
patterns of birth and death in a population
Cohort Life Table
follows a cohort through their reproduction and survival histoy
Static Life Table
Count the number of individuals in each age class at one point in time. Done by taking a census
lx
survivorship
sx
Age-specific survivorship
mx
number of offspring per age class
Type 3 survivorship curve
short-lived individuals
Type 2
survivorship is fairly constant accross life
Type 3
Young have high survivorship, but drop off after a certain point
Net reproductive rate
Ro
Ro equation
lx * mx per age class
What factor has a large impact on population growth?
First age of reproduction
First ago of reproduction is a ____
life history trait