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38 Cards in this Set
- Front
- Back
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factors that influnce biotic potential?
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-age of first reproduction
-frequency of reproduction -average number of offspring per reproduction -length of organisms reproducing life span -death rate |
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exponential growth
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result from biotic potential
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how do 2 population sizes change?
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births, deaths, migration(immigration/emmigration)
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environmental resistance
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equal limits opposing max growth ex: availability of food, availability of space, competition w/ other organisms, climate, interaction amoung species
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biotic potential
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equal max rate in which population could increase
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population
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all members of a particular species that live w/ in an ecosystem and can potentially interbreed
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ecology
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study of interrelationships of living things and non-living environment
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exponential growth
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result from biotic potential
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equalibrium
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equal birth rate balanced by equal death rate; pop size is stabalized
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carrying capacity
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equal max pop size that ecosystem can sustain
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age structures
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-pre reproductive
-reproductive -post reproductive |
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US population
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-300,000,000 ppl
-fastest growing developed country -immigration large factor |
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community
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all populations that live in a habitat
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habitat
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place where individual species normally live
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niche
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equal sum of activites and relationships which it engages to secure and use the resources necessary for its survival and reproduction
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succession
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equal process of communitu development
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primary succession
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new land
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secondary succession
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development on land that has already been inhabited by but has a disturbance
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predation
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predator and prey
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competition
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interspecific & intraspecific
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interspecific
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competition w/in species
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intraspecific
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competition b/t species
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symbiosis
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living together
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types of symbiosis?
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parasitism, commensalism, mutualism
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community instability?
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-long term shifts in climate
-introduction of new species -human interaction |
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exotics?
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not native to the community
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ecosystem
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community of organisms both biotic and abiotic
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primary?
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herbivores & omnivores
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secondary?
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carnivores & omnivores
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tertiary
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herbivores, carnivores, omnivores
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consumers?
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primary, secondary, tertiary
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herbivore
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plant eater
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omnivore
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plant and meat eater
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carnivore
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meat eater
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food chain
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straight line sequence of steps by which energy stored in autotroph tissues passes onto higher tropic levels
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food web
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connections of food chains in an ecosystem
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biosphere?
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earth, all places inhabited by organisms
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climactic influences
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-latitude
-elevation -landforms -air circulation patterns -oceans/bodies of water |
