Figure 3

Relationship between mean salinity and (a) mean log10 cell abundance, (b) mean α species richness (rarefied at the individual level) and (c) mean α effective number of species (ENS, rarefied at the individual level) at the station-level. Circles are monthly measurements of log10 cell abundance, α species richness and α ENS for each station. Filled circles are the mean of all monthly measurements at each station (see Table 1). Regression lines are through the means and are presented with 95% confidence bands. Solid lines include all stations and dashed lines exclude the station from the Gulf of Bothnia (lowest salinity point). Different colours are different stations with different mean station-level salinities (colours are the same as in Fig. 1).