A comparative study of four indexes based on zooplankton as trophic state indicators in reservoirs 2019. Volumen 38 (1): 291-302
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Abstract
This study aims to examine four recently conducted trophic state indices that are based on the density of zooplankton and designed for estimating the trophic state of inland waters. These indices include two with formulations based on quotients or ratios, the Rcla and the Rzoo-chla, which were proposed and validated in the European project ECOFRAME, and two with formulations based on the incorporation of a statistical tool comprising canonical correspondences analysis (CCA), the Wetland Zooplankton Index proposed in 2002 by researchers from McMaster University of Ontario and the Zooplankton Reservoir Trophic Index, an index recently designed by the Ebro Basin Authority and on which this manuscript is the first article. These indices were studied and applied in 53 heterogeneous reservoirs of the Ebro Basin. In addition, all were subsequently validated by Carlson's Trophic State Index based on the amount of chlorophyll-a, with significant differences found between them.
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Montagud, Daniel Soria García, Juan Miguel Soria-Perpiñà, Xavier Alfonso, Teresa Vicente Pedrós, Eduardo 2019 A comparative study of four indexes based on zooplankton as trophic state indicators in reservoirs 2019. Volumen 38 (1): 291-302 Limnetica 38 1 291 302