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Linking phylogenetic similarity and pollution sensitivity to develop ecological assessment methods : a test with river diatoms [Journal of Applied Ecology]

Keywords : biomonitoring, clade-based analysis, diatoms, index of pollution sensitivity, phylogenetic clustering, phylogenetic signal, water quality

par Frédéric Magné - publié le

1.Diatoms include a great diversity of taxa and are recognized as powerful bioindicators of freshwater quality. However, using diatoms for bioassessment is costly and time-consuming, because most of the indices necessitate species-level identification. Simplifying diatom-based assessment protocols has focused the attention of water managers and researchers in recent years.
2.The increasing availability of genomic data and phylogenies can benefit in the development of bioassessment methods making use of these tools, where a clade plays the role of a species if relevant. Indeed, the null hypothesis is that closely related species are more likely to exhibit similar environmental sensitivity because of phylogenetic constraints and inheritance. Such patterns have been reported recently for sensitivity to a variety of pollutants for two important groups of bioindicators used for freshwater monitoring : benthic macroinvertebrates and diatoms.(...)

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