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In ecology, alpha diversity (α-diversity) is the mean species diversity in a site at a local scale. The term was introduced by R. H. Whittaker [ 1 ] [ 2 ] together with the terms beta diversity (β-diversity) and gamma diversity (γ-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 [ 1 ] together with the terms alpha diversity (α-diversity) and gamma diversity (γ-diversity).
Alpha diversity describes diversity within a population; beta diversity describes diversity between populations. Understanding homogenization requires an understanding of the difference between alpha (α) and beta (β) diversity. Alpha diversity refers to diversity within a community: it addresses how many species are present.
Alpha diversity refers to diversity within a particular area, community or ecosystem, and is measured by counting the number of taxa within the ecosystem (usually species) [14] Beta diversity is species diversity between ecosystems; this involves comparing the number of taxa that are unique to each of the ecosystems.
Members of Gen Beta will be born between 2025 and 2039, according to McCrindle. Why 'Beta'? Generation Beta follows Generation Alpha, in line with the Greek alphabet.
Alpha is a way to measure excess return, while beta is used to measure the volatility, or risk, of an asset. Beta might also be referred to as the return you can earn by passively owning the market.
Most T cell receptors are composed of a variable alpha chain and a beta chain. The T cell receptor genes are similar to immunoglobulin genes in that they too contain multiple V, D, and J gene segments in their beta chains (and V and J gene segments in their alpha chains) that are rearranged during the development of the lymphocyte to provide ...
Alpha investing aims to beat the benchmark, while beta investing focuses on how volatile an asset is compared to the market. Alpha vs. beta: Understanding the differences and they work in ...