Using Species Proportions to Quantify Turnover in Biodiversity |
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Authors: | Yuan Yuan Stephen T Buckland Phil J Harrison Sergey Foss Alison Johnston |
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Institution: | 1.School of Mathematical and Statistics,University of St Andrews,St Andrews,UK;2.School of Mathematical and Statistics,ArtDatabanken,Uppsala,Sweden;3.School of Mathematical and Computer Sciences,Heriot-Watt University,Edinburgh,UK;4.British Trust for Ornithology,Norfolk,UK |
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Abstract: | Quantifying species turnover is an important aspect of biodiversity monitoring. Turnover measures are usually based on species presence/absence data, reflecting the rate at which species are replaced. However, measures that reflect the rate at which individuals of a species are replaced by individuals of another species are far more sensitive to change. In this paper, we propose families of turnover measures that reflect changes in species proportions. We study the properties of our measures, and use simulation to assess their success in detecting turnover. Using data on the British farmland bird community from the breeding bird survey, we evaluate our measures to quantify temporal turnover and how it varies across the British mainland. |
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