Hypothesis 1: Decreasing salinity promotes rotifers and cladocerans
We expected the share of rotifers and cladocerans to be negatively affected by salinity (Gutierrez et al. 2018). To find support for H1, we looked for expected links between the interannual variations in community composition: the average position along the axis A2 that corresponded to the complexity, or relative share of rotifers and cladocerans in summer as a function of annual mean salinity in the study area.