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www.metagenomics.wiki/pdf/definition/alpha-beta-diversity

Alpha and beta diversity. Alpha diversity. Species richness (OTU count) "How many?" How many different species could be detected in a microbial ecosystem? Species richness is the number of different species in a sample. Practically, we count the number of distinguishable taxa (OTU's) in each sample → QIIME OTU counts.

en.wikipedia.org/wiki/Alpha_diversity

In ecology, alpha diversity (α-diversity) is the mean species diversity in sites or habitats at a local scale. The term was introduced by R. H. Whittaker together with the terms beta diversity (β-diversity) and gamma diversity (γ-diversity). Whittaker's idea was that the total species diversity in a landscape (gamma diversity) is determined by two different things, the mean species ...

www.ncbi.nlm.nih.gov/pmc/articles/PMC5074386

Microbiota Diversity Analysis. Microbiome diversity is typically described in terms of within (i.e., alpha) and between samples (i.e., beta) diversities. Methods for analyzing alpha and beta diversity (see Box 3) have been discussed at length in various reviews (Kuczynski et al., 2010; Lozupone and Knight, 2008). Here, we focus instead on the ...

dpcpsi.nih.gov/.../files/CoC-112008-Gordon-Microbiome.pdf

•Alpha diversity (how many types of sequences in a sample) or beta diversity (how different types are distributed among samples) •Qualitative or quantitative ... Looking ahead for the human microbiome project…. What constitutes a suitable reference control when

journals.plos.org/ploscompbiol/article?id=10.1371/journal...

D) Alpha diversity captures both the organismal richness of a sample and the evenness of the organisms' abundance distribution. Here, alpha diversity is defined by the Shannon index , , where p i is the relative abundance of taxon i, although many other alpha diversity indices may be employed. E) Beta diversity represents the similarity (or ...

www.researchgate.net/post/What_is_the_difference_between...

What is the difference between alpha-diversity and beta-diversity in microbial ecology? ... and differential abundance of microbiome data from paired samples? ... method to compare alpha, beta ...

www.youtube.com/watch?v=9ZvoR89HYP8

The Quantum Experiment that Broke Reality | Space Time | PBS Digital Studios - Duration: 13:32. PBS Space Time 3,443,529 views

www.quora.com/What-is-the-difference-between-alpha-beta...

The terms alpha, beta, and gamma diversity were all introduced by R. H. Whittaker to describe the spatial component of biodiversity. Imagine that you have a landscape containing of a number of separate sites and habitats. Alpha diversity is just the diversity of each site (local species pool).

www.coursera.org/lecture/microbiome/basics-of-alpha...

This module highlights the basics of generating and analyzing microbiome data. We will also discuss how computational scientists are revolutionizing the development of tools for analyzing large, complex biological data sets and show you some of the cool ways that we visualize data!

www.nature.com/articles/nature11234

Studies of the human microbiome have revealed that even healthy individuals differ remarkably in the microbes that occupy habitats such as the gut, skin and vagina. Much of this diversity remains ...