Ecology Flashcards
Any factor limiting the size of a population whose effect is not dependent on the number of individuals in the population.
Density Independent Factor
The assemblage of a specific type of organism living in a given area.
Population
The proportion of births to the total population in a place in a given time, usually expressed as a quantity per 1,000 of population.
Birth Rate
The mating of closely related individuals.
Inbreeding
Name given to people who rely on a hunting and gathering.
Hunter Gatherer Lifestyle
A significant change in agriculture that occurs when there are discoveries, inventions, or new technologies that change production.
Agricultural Revolution
Absolute or relative growth increase, expressed in units of time.
Growth Rate
The probable number of years remaining in the life of an individual or class of persons determined statistically.
Life Expectancy
The number of deaths per unit, usually 1,000 of population in a given place and time.
Death Rate
An act, state, or instance of the scattering of organisms.
Dispersion
When individuals move into a poplulation.
Immigration
When individuals move out of a population.
Emigration
The number of people living per unit of an area; the number of people relative to the space occupied by them.
Population Density
Occurs following an opening of uninhabited, barren habitat, or that occurs on an environment that is devoid of vegetation and usually lacking topsoil.
Primary Sucession
Occurs on a preexisting soil after the primary succession has been disrupted or destroyed due to a disturbance that reduced the population of the initial inhabitants.
Secondary Sucession
