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POPULATION ECO ; HON

QuestionAnswer
Population A group of individuals of the same species occupying the same geographic area.
Population Density The number of individuals per unit area or volume.
Importance of Population Density Influences competition, resource availability, and population growth patterns.
Natality (Birth Rate) The rate at which new individuals are added through reproduction.
Mortality (Death Rate) The rate at which individuals are lost from a population.
Immigration The movement of individuals into a population, increasing density.
Emigration The movement of individuals out of a population, decreasing density.
Exponential Growth Rapid population growth when resources are unlimited.
Logistic Growth Population growth that slows as it approaches carrying capacity.
Carrying Capacity The maximum population size an environment can sustainably support.
Limiting Factors Environmental conditions that restrict population growth.
Biotic Limiting Factors Living influences such as competition, predation, and disease.
Abiotic Limiting Factors Nonliving influences such as climate, natural disasters, and pollution.
Density-Dependent Limiting Factors Factors whose effects increase as population density increases.
Examples of Density-Dependent Factors Competition for resources, parasitism, disease spread.
Density-Independent Limiting Factors Factors that impact populations equally regardless of size.
Examples of Density-Independent Factors Floods, droughts, hurricanes, fires.
Population Dispersion The spatial arrangement of individuals in a population.
Clumped Dispersion Individuals cluster in groups, often due to resources or social behavior.
Uniform Dispersion Even spacing caused by competition or territorial behavior.
Random Dispersion Unpredictable spacing due to abundant resources.
EOC Tip: Density vs Growth Population density influences limiting factors, which then affect population growth.
Created by: pnetha
 

 



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