Populations and Metapopulations
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These flashcards cover key terms and definitions related to populations and metapopulations.
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46 Terms
Population Size
The total number of individuals in a population.
Population Density
The number of individuals per unit area.
Metapopulation
A collection of subpopulations that are connected by gene flow.
Subpopulation
A subset of a larger population, one subunit of a metapopulation.
Clumped Distribution
Individuals occur in groups due to resource locations or social units.
Uniform Distribution
Individuals are evenly spaced, often due to negative interactions like competition.
Random Distribution
Positions of each individual are independent of others in a population.
Emigration
The movement of individuals or genes out of a subpopulation.
Immigration
The movement of individuals or genes into a subpopulation.
Population Growth Rate
The change in the number of individuals over time.
Exponential Growth
Density-independent growth where growth rate does not depend on population size.
Logistic Growth
Density-dependent growth where growth rate is affected by population size.
Carrying Capacity (K)
The maximum population size that an environment can sustain.
Survivorship Curve
A graph showing the number of individuals surviving at each age in a population.
Life History Strategy
The overall pattern in timing of events related to growth, reproduction, and survival.
R-strategists
Species with high fecundity, growing quickly and producing many small offspring.
K-strategists
Species with high survivorship, growing slowly and producing few larger offspring.
Ecological Niche
The physical habitat of a species and its role in that habitat, influenced by abiotic and biotic factors.
Population Size
The total number of individuals in a population.
Population Density
The number of individuals per unit area.
Metapopulation
A collection of subpopulations that are connected by gene flow.
Subpopulation
A subset of a larger population, one subunit of a metapopulation.
Clumped Distribution
Individuals occur in groups due to resource locations or social units
Population Size
The total number of individuals in a population.
Population Density
The number of individuals per unit area.
Metapopulation
A collection of subpopulations that are connected by gene flow.
Subpopulation
A subset of a larger population, one subunit of a metapopulation.
Clumped Distribution
Individuals occur in groups due to resource locations or social units.
Uniform Distribution
Individuals are evenly spaced, often due to negative interactions like competition.
Random Distribution
Positions of each individual are independent of others in a population.
Emigration
The movement of individuals or genes out of a subpopulation.
Immigration
The movement of individuals or genes into a subpopulation.
Population Growth Rate
The change in the number of individuals over time.
Exponential Growth
Density-independent growth where growth rate does not depend on population size.
Logistic Growth
Density-dependent growth where growth rate is affected by population size.
Carrying Capacity (K)
The maximum population size that an environment can sustain.
Survivorship Curve
A graph showing the number of individuals surviving at each age in a population.
Life History Strategy
The overall pattern in timing of events related to growth, reproduction, and survival.
R-strategists
Species with high fecundity, growing quickly and producing many small offspring.
K-strategists
Species with high survivorship, growing slowly and producing few larger offspring.
Ecological Niche
The physical habitat of a species and its role in that habitat, influenced by abiotic and biotic factors.
Population Size
The total number of individuals in a population.
Population Density
The number of individuals per unit area.
Metapopulation
A collection of subpopulations that are connected by gene flow.
Subpopulation
A subset of a larger population, one subunit of a metapopulation.
Clumped Distribution
Individuals occur in groups due to resource locations or social units.