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Batterbee Ecology

ecology

QuestionAnswer
Population density number of individuals per unit of area
immigration movement of individuals in to an area occupied by an existing population
emigration movement of individuals out of an area
exponential growth growth pattern in which the individuals in a population reproduce at a constant rate
logistic growth growth pattern in which a populations's growth rate slows or stops following a period of exponential growth
carrying capacity largest number of indiviuals of a population that a given environment can support.
limiting factor factor that causes the growth of a population to decrease
density-dependent limiting factor limiting factor that depends on population size
density-independent limiting factor limiting factor that affects all populations in similar ways, regardless of population size
demography scientific study of human populations
Interdependence all of the species within an ecosystem are closely connected
species group of similar organisms that can breed and produce fertile offspring
population group of individuals of the same species that live in the same area
community assemmblage of different populations that live together in a defined area
ecosystem collection of all the organisms that live in a particular place, together with their nonliving environment
biome group of ecosystems that have the same climate and dominant communities
niche full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
resource any necessity of life, such as water, nutrients, light, food, or space
predation interaction in which in organism captures and feeds on another organism
symbiosis relationship in which two species live closely together
mutualism symbiotic relationship in which both species benefit from the relationship
commensalism symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed
parasitism symbiotic relationship in which one organism lives in or on another organism (the host) and consequently harms it.
ecological succesion gradual change in living communities that follows a disturbance
primary succession succession that occurs on surfaces where no soil exists
pioneer species first species to populate an area during primary succession
secondary succession succession following a disturbance that destroys a community without destroying the soil
Created by: Batterbee