Gamma diversity

Gamma diversity

Gamma diversity (γ-diversity) is a measure of biodiversity. It refers to the total biodiversity over a large area or region. It is the total of α and β diversity.

According to Whittaker (1972), gamma diversity is the richness in species of a range of habitats in a geographic area (e.g.,a landscape, an island) and it is consequent on the alpha diversity of the individual communities and the range of differentiation or beta diversity among them. Like alpha diversity, it is a quality which simply has magnitude, not direction and can be represented by a single number (a scalar).

The internal relationship between alpha, beta and gamma diversity can be represented as

eta=gamma/alpha

ee also

*Diversity index
*Alpha diversity
*Beta diversity
*Global diversity

References

* Whittaker, R. H. (1972). "Evolution and Measurement of Species Diversity". "Taxon", 21 (2/3), 213-251.
* Henderson, P.A. (2003). "Practical Methods in Ecology". Blackwell Publishing, United Kingdom.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • gamma diversity — /ˈgæmə dəvɜsəti/ (say gamuh duhversuhtee) noun the overall biodiversity exhibited in a large region with several different ecosystems; can be expressed by giving the number of species not found in all the component ecosystems, stating in which… …  

  • Gamma ray burst progenitors — are the types of celestial objects that can emit gamma ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly… …   Wikipedia

  • Gamma Phi Omega — Infobox Fraternity letters= ΓΦΩ name= Gamma Phi Omega crest= founded= Birth date and age|1991|04|17 birthplace= Indiana University type= Social emphasis= scope= National mission= vision= motto= Unity and Sisterhood, Now and Forever, One and… …   Wikipedia

  • Gamma Phi Beta — Infobox Fraternity letters= ΓΦΒ name= Gamma Phi Beta crest= founded=Birth date and age|1874|11|11 birthplace= Syracuse University, (Syracuse, New York) type= Social scope= International mission= vision= motto= Founded Upon A Rock maxim= colors=… …   Wikipedia

  • Gamma Rho Lambda — Infobox Fraternity letters= ΓΡΛ name= Gamma Rho Lambda crest= founded= Birth date and age|2003|08|25 birthplace= Arizona State University, (Tempe, Arizona) type= Social emphasis= scope= National mission= Gamma Rho Lambda National Sorority is an… …   Wikipedia

  • Gamma-Protocadherin-Gencluster — Das Gencluster der gamma Protocadherine liegt beim Menschen auf Chromosom 5q in einer Region, die als Prädisposition von Schizophrenie identifiziert wurde. Durch unterschiedliche Promotoraktivität upstream eines jeden variablen Exons und… …   Deutsch Wikipedia

  • Alpha diversity — (α diversity) is the biodiversity within a particular area, community or ecosystem, and is usually expressed as the species richness of the area.[1] This can be measured by counting the number of taxa (distinct groups of organisms) within the… …   Wikipedia

  • Beta diversity — (β diversity) is a measure of biodiversity which works by comparing the species diversity between ecosystems or along environmental gradients. This involves comparing the number of taxa that are unique to each of the ecosystems.It is the rate of… …   Wikipedia

  • Infinite Diversity in Infinite Combination — Dieser Artikel oder Abschnitt ist nicht hinreichend mit Belegen (Literatur, Webseiten oder Einzelnachweisen) versehen. Die fraglichen Angaben werden daher möglicherweise demnächst gelöscht. Hilf Wikipedia, indem du die Angaben recherchierst und… …   Deutsch Wikipedia

  • Beta Kappa Gamma — Infobox Fraternity letters=ΒKΓ name=Beta Kappa Gamma colors=Blue, Yellow, and Black motto= Brotherhood + Knowledge = Growth ΟΜΙIA KAI MΘHΣIΣ ΨYXAΣ TPEΦOYI symbol=Phoenix crest= founded=birth date and age|1999|5|6 birthplace=University of Texas at …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”