Apes james boyd unit 3

Number of individuals per unit area

Movement of individuals into a population

Movement of individuals out of an area

Growth whose rate becomes ever more rapid in proportion to the growing total number or size.

Growth pattern in which a population's growth rate slows or stops following a period of exponential growth

Largest number of individuals of a population that a environment can support

An environmental factor that prevents a population from increasing

when an animal hunts and eats another animal (ex. lion and antelope)

limiting factor that affects all populations in similar ways, regardless of population size

Any living part of the environment with which an organism might interact

Abiotic factors are the non-living parts of an organism's habitat.

An animal that hunts other animals for food

An organism that is killed and eaten by another organism

Interaction among organisms that vie for the same resource in an ecosystem - tends to limit populations

limiting factors that are affected by the number of individuals in a given area

A bar graph representing the distribution of population by age and sex.

the gray and red squirrels using the same resources, grass and dandelions competing for same space, nutrients and water

plants and animals that have migrated to places where they are not native

Diagram that describes the surviving members of a population

a pattern of survival over time in which there is high survival throughout most of the life span, but then individuals start to die in large numbers as they approach old age

a pattern of survival over time in which there is a relatively constant decline in survivorship throughout most of the life span

Experience the greatest mortality early on in life, with relatively low rates of death for those surviving. Usually r-selected.

Has many offspring at once, but does not care for their young.

Has only a few offspring, but takes good care of them.

The process of change in a society's population from a condition of high birth and death rates and low rate of natural increase to a state of low crude birth and death rates, low rate of natural increase, and a higher total population that is no longer growing.

low growth: very high birth and death rates produce virtually no long-term natural increase

improvements in healthcare, nutrition, sanitation, and wages cause death rates to drop - people begin living longer, infant mortality rates go down

Birth rates rapidly decline, death rates continue to decline, and population growth starts to slow down - birth rates drop due to education, equal access to economic opportunities, family planning.

economic development, technology, and gender equality leads to very low birth and death rates produce virtually no long-term natural increase - population reaches steady-state

Birth rates drop below death rates, population declines (Denmark, Japan, Germany)