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  2. Measurement of biodiversity - Wikipedia

    en.wikipedia.org/wiki/Measurement_of_biodiversity

    A variety of objective means exist to empirically measure biodiversity. Each measure relates to a particular use of the data, and is likely to be associated with the variety of genes. Biodiversity is commonly measured in terms of taxonomic richness of a geographic area over a time interval. In order to calculate biodiversity, species evenness ...

  3. Species richness - Wikipedia

    en.wikipedia.org/wiki/Species_richness

    The observed species richness is affected not only by the number of individuals but also by the heterogeneity of the sample. If individuals are drawn from different environmental conditions (or different habitats), the species richness of the resulting set can be expected to be higher than if all individuals are drawn from similar environments.

  4. Essential Biodiversity Variables - Wikipedia

    en.wikipedia.org/wiki/Essential_Biodiversity...

    EBVs would be used to inform biodiversity change indicators, such as the CBD Biodiversity Indicators for the Aichi Targets. [2] The concept is partly based on the earlier Essential Climate Variables. [3] [4] It can be generalised as the minimum set of variables for describing and predicting a system's state and dynamics. Areas with more ...

  5. Latitudinal gradients in species diversity - Wikipedia

    en.wikipedia.org/wiki/Latitudinal_gradients_in...

    Species richness, or biodiversity, increases from the poles to the tropics for a wide variety of terrestrial and marine organisms, often referred to as the latitudinal diversity gradient. [1] The latitudinal diversity gradient is one of the most widely recognized patterns in ecology. [1] It has been observed to varying degrees in Earth's past. [2]

  6. Species distribution - Wikipedia

    en.wikipedia.org/wiki/Species_distribution

    Species distribution can be predicted based on the pattern of biodiversity at spatial scales. A general hierarchical model can integrate disturbance, dispersal and population dynamics. Based on factors of dispersal, disturbance, resources limiting climate, and other species distribution, predictions of species distribution can create a bio ...

  7. Category:Measurement of biodiversity - Wikipedia

    en.wikipedia.org/wiki/Category:Measurement_of...

    Download as PDF; Printable version; ... Pages in category "Measurement of biodiversity" ... This page was last edited on 23 October 2018, ...

  8. Species–area relationship - Wikipedia

    en.wikipedia.org/wiki/Species–area_relationship

    Species–area relationships are often graphed for islands (or habitats that are otherwise isolated from one another, such as woodlots in an agricultural landscape) of different sizes. [3] Although larger islands tend to have more species, a smaller island may have more than a larger one.

  9. 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).

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