6) Population Density and Distribution

What does each population have?

a density, dispersion, and a reproductive strategy

What has a density, dispersion, and a reproductive strategy?

each population

What is population density?

a measurement of the number of individuals living in a defined space

What is a measurement of the number of individuals living in a defined space called?

population density

What is the equation for population density

number of individuals/area (units²)

number of individuals/area (units²)=

equation for population density

What does population dispersion refer to?

how a population is spread in an area

What refers to how a population is spread in an area?

population dispersion

What are the three types of dispersion?

clumped, uniform, and random

Clumped, uniform, and random are the three types of what?

dispersion

What do survivorship curves help to describe?

the reproductive strategy of a species

What helps to describe the reproductive strategy of a species?

survivorship curves

What is a survivorship curve?

a diagram showing the number of surviving members over time from a measured set of births

What is a diagram showing the number of surviving members over time from a measured set of births?

a survivorship curve

Type 1 survivorship curve

low level of infant mortality and an older population, common to large mammals and humans

What survivorship curve is this: low level of infant mortality and an older population, common to large mammals and humans

type 1

Type 2 survivorship curve

survivorship rate is equal at all stages of life, common to birds and reptiles

What survivorship curve is this: survivorship rate is equal at all stages of life, common to birds and reptiles

type 2

Type 3 survivorship curve

very high birth rate. very high infant mortality, common to invertebrates and plants

What survivorship curve is this: very high birth rate, very high infant mortality, common to invertebrates and plants

type 3