Figure 1 . Principal Coordinate Analysis (PCoA) of the functional trait values of Baltic Sea zooplankton. Coloured points correspond to individual taxa (species or higher, n=204). The effect of different traits on the PCoA results is visualized by symbols and colour: colour describes the mean body length (middle point between the minimum and maximum body size during life cycle); symbols indicate the large grouping of organism (four categories: rotifers, cladocerans, copepods, and others). Light grey polygon is a convex hull defined by the subset of taxa that were found in Gulf of Riga. Along the PCoA axis 1, the species were separated by the feeding type: values above the 0 belong to the filter feeding organisms, mixed feeding type is found between the 0 and -0.2, and all points below -0.2 are the predators.