Responses to Environment
organisms that generate their own heat through metabolic processeses
Endotherms.
Primary source of energy for nearly all global ecosystems.
Sunlight (solar energy)
Carrying capacity
Long term close relationship between two different biological species
Symbiosis
Organisms that rely on external behavioral sources for heat.
ectotherms.
Organisms that produce their own food using light chemical energy.
Autotrophs.
Growth model shaped like an "s" when resources limit growth
Logistic growth
Symbiotic relationship where one individual is benefitted and the other is unharmed.
Commensalism.
organismal behavior triggered by an external sensory cue
Fixed action pattern.
Percentage of energy transferred from one trophic level to the next.
10%
Factors like disease of competition that limit growing populations.
Density-dependent factors
Species with a disproportionately large impact on ecosystem structure.
Keystone species
Seasonal movement of animals over long distances using cues
Migration
Total amount of solar energy captured by producers per unit area.
Gross primary productivity (GPP)
Factors like weather or natural disasters limiting population growth.
Density independent factors
Process of ecological community change following a severe disturbance
Ecological succession