Skip to main content

Estimates of Population Parameters

Estimates of Population Parameters
1. Population sizeCapture–recapture (for small population sizes)   N = s/p where p = r/swhere s is the sample size captured and marked, and the sample size of the second capture; r is the number of marked individuals in the second capture; N is the population size

2. Measures of diversity(a) Species diversity:(i)Simpson's indexwherePi is the proportion of individuals/biomass to the total sample of the ith species;s is the total number of species(ii)Shannon–Wiener index(b) Population diversity:(i)Nucleotide diversity (π)where L is the length of DNA sequence; n is the number of sequences examined; Πij is the number of nucleotide differences between the ith and jth sequences; Ne is the effective population size; u is the mutation rate(ii)Allele frequency datahomozygosity of population j (Hj)heterozygosity (allele diversity) of population j (hj)hj = 1 − Hjaverage heterozygosity of s populations (hs)gene frequency variations between populations (FST)where L is the number of alleles examined of a given locus; pij is the gene frequency of allele i in population j; p̄i is the average gene frequency of allele i in s populations(c)Genetic distance:(i)Genetic distance between two DNA sequences (K) using the Kimura 2 parameter modelwhere P is the proportion of transitions; Q is the proportion of transversions; K is the number of substitutions per base site(ii)Estimate of genetic distance based on allele frequencies (D)where nj is the sample size of population j

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Estimates of Population Parameters." A Dictionary of Ecology. . Encyclopedia.com. 14 Dec. 2018 <https://www.encyclopedia.com>.

"Estimates of Population Parameters." A Dictionary of Ecology. . Encyclopedia.com. (December 14, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/estimates-population-parameters

"Estimates of Population Parameters." A Dictionary of Ecology. . Retrieved December 14, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/estimates-population-parameters

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.