Online automatic phytoplankton monitoring at several locations performed by flowcytometry (CytoSense-CytoSub)

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To overview 2 Clustering of particles Particles with similar optical properties are merged to groups or clusters. Sometimes, these clusters contain pure phytoplankton species of one kind, but it is also possible that it consist of several fytoplankton species due to non-discriminating properties. These scatter- or dotplots gives you an idea of how plankton is distributed in a water sample with respect to the concentration as well as the size and pigments of species. Each symbol in this bivariate scatter plot represents a measured particle, showing two optical detector values of particles on both axes. Clusters of particles representing rather similar optical characteristics in all flowcytometric variables are represented and grouped with the same symbol and color. This grouping is performed automatically by the online EasyClus clustering.