Flashcards
Population biology
Cards in this deck (21)
- 1What is population growth generally limited by?Mortality, and reproduction
- 2Biotic PotentialUnconstrained biological reporduction
- 3What three things are required to produce a mathematical model of population growth?Number of individuals of each population, number of offspring that each population can produce, time
- 4N, r, tN(Number of individuals, r(number of offspring per adult, t(number of time steps into the future)
- 5Reproduction isCONTINUOUS
- 6Carrying capacityThe number of plants or animals that can be supported by the environment without depleting the available resources
- 7overshootWhen a population exceeds the carrying capacity of the environment and death results from a scarcity of resources
- 8Population crash or diebackA rapid die back in the population to a level below the carrying capacity
- 9Species that are able to overcome undpredictable environmental conditions or exploit new onesR-selected species
- 10S-Shaped population growth also known asLogistic growth
- 11Species that are adapted to the environment which stays generally the same for a long period of timeK-Selected species
- 12Density dependent factorMechanisms of population control change as the density of the population changes, generally the living things of ecosystems(predation, disease, crowding and stress, paratism
- 13Interspecific interactionsbetween species
- 14Intraspecific interactionswithin a species
- 15Density independent factorsSome factors operate independently of how many individuals are in the population (fire, drought, climate, weather, landslides, floods)
- 16MetapopulationsA group of populations that are separated by space but consist of the same species
- 17Demographic bottleneckA few members of a species survive a catastrophic event such as a natural disaster or uncontrolled harvest
- 18Founder effectfew individuals start a new population
- 19Inbreeding depressionReduced fitness in a given population as a result of breeding related individuals
- 20Minimum viable populationthe number of individuals needed for long term survival of rare or endangered species
- 21—
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- Flashcards on Population biology, created by Muriel King on 17/10/2016.
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- Muriel King
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