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