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Last updated 7:38 PM on 2/27/25
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19 Terms

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Population
Group of individuals of the same species living in the same geographical area at the same time and that are interbreeding.
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Carrying Capacity
The largest population of a species that an environment can support over time.
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Density-Dependent Factors
Factors that affect a population’s growth based on its size, usually biotic, such as competition, predation, and disease.
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Density-Independent Factors
Factors that limit population growth regardless of population size, usually abiotic, such as climate events and natural disasters.
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Capture-Mark-Release-Recapture
A sampling technique to estimate the number of motile organisms in an ecosystem.
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Sampling Methods
Systematic sampling involves regular intervals measurements, while random sampling involves arbitrary zones of the population's distribution.
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Natality
The birth rate of a population.
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Mortality
The death rate of a population.
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Immigration
Individuals entering a population.
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Emigration
Individuals leaving a population.
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Exponential Growth Phase
The initial phase of a population growth where the population increases rapidly due to abundant resources.
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Biotic Factors
Living factors that can affect population dynamics, such as competition, predation, and disease.
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Abiotic Factors
Non-living factors that affect population growth, such as climate and habitat destruction.
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Quadrant Sampling
A method used to estimate population size of sessile organisms by using squares of a particular dimension.
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Random Sampling
Sampling method where arbitrary zones of population’s distribution are chosen to avoid bias.
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Systematic Sampling
A method that involves sampling at regular intervals across a predetermined area.
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Negative Feedback in Population Dynamics
Mechanism by which populations are regulated through density-dependent factors which push the population toward carrying capacity.
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Population Density
The number of individuals per unit area or volume.
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Geographical Distribution
The natural arrangement and location of various populations within ecosystems.