What is the Shannon Wiener diversity index?

The most common measures of biodiversity are species richness, Simpson's index and Shannon-Wiener index. Species Richness. This is the simplest of all the measures of species diversity. All you do is count of the number of species found in a community (e.g., the number of the species found on a biofilm plate).
A.

What does the Shannon diversity index mean?

Methods: The Shannon diversity index (H) is another index that is commonly used to characterize species diversity in a community. Like Simpson's index, Shannon's index accounts for both abundance and evenness of the species present. Equitability assumes a value between 0 and 1 with 1 being complete evenness.
  • What are alpha beta and gamma diversity?

    Alpha diversity is just the diversity of each site (local species pool). Beta diversity represents the differences in species composition among sites. Gamma diversity is the diversity of the entire landscape (regional species pool).
  • What is a rank abundance plot?

    Rank abundance curve. From Wikipedia, the free encyclopedia. A rank abundance curve or Whittaker plot is a chart used by ecologists to display relative species abundance, a component of biodiversity. It can also be used to visualize species richness and species evenness.
  • What is beta richness?

    In ecology, beta diversity (β-diversity or true beta diversity) is the ratio between regional and local species diversity. The term was introduced by R. H. Whittaker together with the terms alpha diversity (α-diversity) and gamma diversity (γ-diversity). As a result, there are now many defined types of beta diversity.
B.

What is the diversity index?

A diversity index is a quantitative measure that reflects how many different types (such as species) there are in a dataset (a community), and simultaneously takes into account how evenly the basic entities (such as individuals) are distributed among those types.
  • What is a beta diversity?

    In ecology, beta diversity (β-diversity or true beta diversity) is the ratio between regional and local species diversity. The term was introduced by R. H. Whittaker together with the terms alpha diversity (α-diversity) and gamma diversity (γ-diversity). As a result, there are now many defined types of beta diversity.
  • What is the percentage of abundance?

    The Percent Abundance is the percentage amount of all the natural occurring isotopes of the element. It is used to find the average atomic mass of the element.
  • What is the natural abundance of an isotope?

    In physics, natural abundance (NA) refers to the abundance of isotopes of a chemical element as naturally found on a planet. The relative atomic mass (a weighted average, weighted by mole-fraction abundance figures) of these isotopes is the atomic weight listed for the element in the periodic table.

Updated: 16th October 2019

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