Population Ecology

Flashcards for reviewing key concepts in Population Ecology.

Population is defined as __.

All the individuals of a species that live together in an area.

Demography is the __ study of populations.

Statistical.

The three key features of populations are __, __, and __.

Size, Density, Dispersion.

Population density is calculated by __.

of individuals ÷ unit of space.

The formula for growth rate is __.

Birth Rate (b) - Death Rate (d).

_ refers to the movement of individuals out of a population.

Emigration.

_ describes the spacing of organisms relative to each other.

Dispersion.

The maximum population size that can be supported by the available resources is known as __.

Carrying Capacity (k).

Exponential growth is characterized by __ growth over time.

Unrestricted.

K Strategists generally have life spans and body sizes.

Long; Large.

R Strategists reproduce and have parental care.

Quickly; Little.

Human population growth is approximately __ million yearly.

80.

Factors limiting growth rate include __, buildup of toxic wastes, and increased disease.

Limited food supply.

Age distribution of a population is used to __ future population growth.

Predict.

The human population may reach __ billion by the year 2050.

9.3.

Density-dependent factors are __ in the environment that increase as population size increases.

Biotic.

Density-independent factors affect populations regardless of their density and are __ in nature.

Abiotic.