Chapter 3 Key Terms
Parity: number of children previously born to a woman.
Replacement Level Fertility: the level of fertility at which a couple has
only enough children to replace themselves, or just over two children per
Crude Death Rate: the nu
We have to link Ro with generation time.
So, we need to manipulate this equation before we can describe the rate of population growth.
We can derive the relationship that links population size, rate of increase and time.
Ro (net reproductive rate) and gen
dynamics of the population
To study the dynamics of the population need to know how large the population is.
If population is small one can count individuals directly. e.g. grizzly bears, whooping cranes.
Most studies require an estimate of population siz
Chapter 5 Key Term Notes
Population Growth Rate: the rate at which a population is increasing (or
decreasing) in a given year due to natural increase and net migration,
expressed as a percentage of the base population.
Population Pyramid: graphic represen
Lecture 4: Demography
Demography is the description and prediction of population growth and patterns in age/size
Derived from the deme = population
Demography derives the vital statistics for a population which include:
Probability of survival
Net reproductive rate (Ro) = sum l(x) m(x) or, average # of offspring produced by an individual.
(Ro) can tell us whether the population is increasing or decreasing but not how fast, unless
reproduction in the population is a semelparous,
Semelparous - mostly discrete reproductive events and nonoverlapping, but some can have
overlapping generations. e.g. non-overlapping, seasonal - annual grasses, overlapping,
bienniel plants growth in one season, reproduce in next with
What is a Population
A group of individuals living in a particular area.
Individuals that interact while seeking resources and in producing
Members of a group that are subject to the same local conditions of
If natality (births) and immigration (in movement) exceed mortality
(deaths) and emigration (out movement), then populations increase.
If mortality (deaths) and emigration (out movement) exceed natality (births)
and immigration (in mov
POPULATION AND HEALTH TERMS
Count: the absolute number of a population of any demographic event
occurring in a specified area in a specified time period.
Rate: the frequency of demographic events in a population during a
specific time period (usually a ye