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  2. Alpha diversity - Wikipedia

    en.wikipedia.org/wiki/Alpha_diversity

    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).

  3. Beta diversity - Wikipedia

    en.wikipedia.org/wiki/Beta_diversity

    Here gamma diversity is the total species diversity of a landscape and alpha diversity is the mean species diversity per site. Because the limits among local sites and landscapes are diffuse and to some degree subjective, it has been proposed that gamma diversity can be quantified for any inventory dataset and that alpha and beta diversity can ...

  4. Measurement of biodiversity - Wikipedia

    en.wikipedia.org/wiki/Measurement_of_biodiversity

    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.

  5. Biotic homogenization - Wikipedia

    en.wikipedia.org/wiki/Biotic_Homogenization

    Alpha diversity refers to diversity within a community: it addresses how many species are present. A community with high α diversity has many species present. Beta diversity compares multiple communities. For there to be high β diversity, two communities would have to have high α diversity but have different, unique species compositions. [2]

  6. Generation Alpha ends as 2025 kicks off Generation Beta - AOL

    www.aol.com/news/generation-alpha-why-talking...

    2025 marks the end of Generation Alpha and the start of Generation Beta, a cohort that will include all individuals born between 2025 and 2039. After Gen Z, meet Gen Alpha. What to know about the ...

  7. Alpha vs. beta in investing: What’s the difference? - AOL

    www.aol.com/finance/alpha-vs-beta-investing...

    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.

  8. Gamma diversity - Wikipedia

    en.wikipedia.org/wiki/Gamma_diversity

    In ecology, gamma diversity (γ-diversity) is the total species diversity in a landscape. The term was introduced by R. H. Whittaker [1] together with the terms alpha diversity (α-diversity) and beta diversity (β-diversity). Whittaker's idea was that the total species diversity in a landscape (γ) is determined by two different things, the ...

  9. Babies born from January 1 will be part of Generation Beta, a new generation that will hopefully be less obsessed with Skibidi Toilet. ... Gen Beta: 2025-2039. Gen Alpha: 2010-2024. Gen Z: 1997 ...