Population Ecology

The fraction of solar energy that is reflected back into space.

The amount that the population would grow if there were unlimited resources in its environment.

The amount of the earth's surface that's required to supply the needs of and dispose of the waste from a particular population.

The random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance, rather than natural selection.

Organisms that reproduce later in life, produce fewer offspring, and devote significant time and energy to the nurturing of their offspring.

When a population is well below the size dictated by the carrying capacity of its region, it will grow exponentially, but as it approaches the carrying capacity, its growth rate will decrease and the size of the population will eventually become stable.

The number of children a couple must have in order to replace themselves in a population.

Organisms that reproduce early in life and often and have a high capacity for reproductive growth.

Food, space, disease

Fire, Earthquake, Storms.

• Education of Women
• Brith Control Availability
• Culture, Religion, Beliefs
• Demand for Child Labor

Total Impact = population x affluence x technology level.

• 1972
• This act protected marine mammals from falling below their optimum sustainable pupulation levels.

The act prohibited commerce of those species considered to be endangered or threatened.

This agreement bans the capture, exportation, or sale of endangered and threatened species.

A program that receives food from foods processors and distributors and redistributes it via food banks.

Supported food redistribution charities by allowing farmers, ranchers, and restaurant owners to deduct the cost of the foods they donate.

birth rate minus death rate divided by 10.

Harsh living conditions that limit a population's growth rate.

• Pre-Industrial
• Transitional
• Industrial
• Post-Industrial

• 12% Farms
• 11% Timber Plots
• 26% Grazing