Short Communications
20 November 2023
Vol. 82 (2023)
A procedure to update quality indices based on species abundances: an example using the EPI-L diatom index
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All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
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We propose a procedure to update ecological quality indices using species autoecology estimated by gradient analysis when new species are found, or taxonomy is updated. When updating an index, the new values must be comparable to the old ones to avoid recalibration and quality class boundary changes. As gradient length influences the values of the species optima, we propose to avoid adding new species to existing lists and we suggest recalibrating the index with a new calibration dataset and rescaling species optima. This final step reduces index updating-induced quality classification changes. An example is shown using the EPI-L diatom index, a quality index for lakes affected by trophic pressure.
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Citations
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Edited by
Michela Rogora, National Research Council, Water Research Institute (CNR-IRSA), Verbania Pallanza, ItalySupporting Agencies
National Biodiversity Future Center, Palermo, Italy , Italian National Research Council, Italian Ministry of University and ResearchHow to Cite
“A Procedure to Update Quality Indices Based on Species Abundances: An Example Using the EPI-L Diatom Index”. 2023. Journal of Limnology 82 (1). https://doi.org/10.4081/jlimnol.2023.2151.
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