Population Ecology- 13

Life Table

a summary

of how survival and

reproductive rates in a

population vary with the

age of individuals (or

size, or life cycle stage).

COHORT LIFE TABLE

A life table in which the fate of

a group of individuals born

during the same time period (a

cohort) is followed from birth

to death.

Data are collected over the

lifetime of the cohort.

STATIC LIFE TABLE

A life table that records the

survival and reproduction of

individuals of different ages

during a single time period.

Data are collected all at once,

across all living cohorts.

Fitness

Survival and reproductive success

Fecundity

Number of offspring

Geometric Growth Formula

Used for populations that have discrete breeding events (e.g., a breeding season, rather than

producing offspring any time of the year)

Net Reproductive Rate (R0)

Expected average number of

offspring produced by an individual

in their lifetime.

Population Growth Rate (λ)

The change in population size over a

unit of time.

Intrinsic Rate of Increase (r)

A constant whose value is

determined by the per capita birth

rate minus the per capita death rate

at any instant in time.