Population Ecology
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Last updated 3:06 AM on 10/10/22
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32 Terms
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Viruses
________ at minimum have: nucleic acid (DNA + RNA) and protein coat (capsid)
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Small organisms
________- shorter generation times.
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population ecology
study of intraspecific interactions
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Principle of allocation
________: "more energy for on function= less energy for other function.
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population ecology
the study of intraspecific interactions
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intraspecific interactions
organisms interacting with members of the same species in relation to environment
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density
the number of individuals per unit area/volume
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dispersion
pattern of spacing among individuals in the population
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ex
counting the number of oak trees in 100mx100m plots in Troy, then calculate average in the city
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Mark-recapture
mark individuals from a sample of the population, release back into the population
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3 types of dispersion
clumped, uniform, random
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Demography
study of statistics of populations and changes over time
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Life tables
age-specific summaries of the survival pattern of a population from birth to death
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cohorts
individuals of the same age
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reproductive table
based on female cohorts producing offspring from birth to death
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Generation time
amount of time between birth of individual vs its offspring
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small organisms
shorter generation times
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ex
bacteria dividing asexually by binary fission every 20 minutes
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large organisms
longer generation times
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Viruses at minimum have
nucleic acid(DNA + RNA) and protein coat(capsid)
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exponential population growth(r-selected)
populations that have access to abundant resources and reproduce without limits
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logistic population growth(k-selected)
populations with limited resources that cause populations to reach a plateau
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the plateau in logistic population growth is also called
carrying capacity(K)
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semelparity
a single, large reproductive effort
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iteroparity
repeated reproduction
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life history
traits that affect an organisms schedule of reproduction and survival
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r-selected
reproductive success in uncrowded environments
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k-selected
life history traits sensitive to population density
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"principle of allocation"
more energy for on function = less energy for other function
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reproductive diapause
allocation of energy from breeding to migration for survival
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density-dependent factors
factors that affect populations as it becomes more dense
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density-independent factors
factors that affect population size regardless of number of individuals
Flashcards (31)