Chapter 53 - Population Ecology Flashcards
Causes of uniform dispersion
territoriality
demography
study of the vital statistics of populations and how they change over time
3 basic types of survivorship curve
I - low death rate at beginning
II - constant death rate
III - high death rate at beginning
Life History Traits
age reproduction begins
how often reproduction occurs
how many offspring each time
K-Selected
density-dependent
favored at high densities
competition is stronger and live near carrying capacity
r-selected
density-independent
selection for traits that maximizes reproductive success in low densities
maximize r, the per capita rate of increase often found in disturbed habitats
Age Structure
number of individuals of each age in a population
It’s graphed by a “pyramid”
Demographic transition
moving towards low birth rates and low death rates
territoriality
Causes of uniform dispersion
study of the vital statistics of populations and how they change over time
demography
I - low death rate at beginning
II - constant death rate
III - high death rate at beginning
3 basic types of survivorship curve
age reproduction begins
how often reproduction occurs
how many offspring each time
Life History Traits
density-dependent
favored at high densities
competition is stronger and live near carrying capacity
K-Selected
density-independent
selection for traits that maximizes reproductive success in low densities
maximize r, the per capita rate of increase often found in disturbed habitats
r-selected
number of individuals of each age in a population
It’s graphed by a “pyramid”
Age Structure
