Dispersion ellipses fitted on the biplot of the redundancy analysis based on the CARD-FISH data constraint by physico-chemical variables (<b>Figure 3</b>). FreimannRemo BürgmannHelmut E. G. FindlayStuart T. RobinsonChristopher 2014 <p>Dispersion ellipses split by catchments for different water sources and seasons are shown and depict the standard error of weighted average scores (confidence limit  = 0.95).</p>