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Population Sampling Methods definitions

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  • Transect
    A line of known position and length through a habitat, used to count organisms along or near it for population estimates.
  • Quadrat
    A rectangular or square plot placed randomly or at intervals to count organisms within its boundaries for sampling.
  • Population Size
    The total number of individuals in a group, often estimated using sampling methods rather than direct counting.
  • Mark and Recapture
    A method for estimating numbers of mobile organisms by capturing, marking, releasing, and recapturing individuals.
  • Genetic Diversity
    The degree of genetic variation among individuals, used to infer whether a group is large or small.
  • Sampling
    The process of examining a subset of a group to make inferences about the whole, especially when direct study is impractical.
  • Stationary Organism
    A living thing that does not move or moves very slowly, making it suitable for transect or quadrat studies.
  • Mobile Organism
    A living thing that moves frequently, requiring specialized methods like mark and recapture for study.
  • Equation mn=rc
    A formula relating marked and recaptured individuals to estimate total numbers in a group.
  • Assumption
    A condition that must be met for a method, such as mark and recapture, to yield accurate results.
  • Extrapolation
    The process of using data from a sample to estimate characteristics of an entire group.
  • Molecular Tool
    A technique using DNA analysis to assess group size by examining genetic relationships among individuals.
  • Habitat
    The natural environment where a group lives and sampling methods are applied.
  • Population Density
    The number of individuals per unit area, often inferred from sampling or genetic data.
  • Random Sampling
    A technique where sample locations are chosen by chance to avoid bias in estimating group characteristics.