Chrysophytes are a type of algae that can be found in a wide range of lakes.
Because of the coloring of specific photosynthetic pigments, they are commonly referred to as golden-brown algae. They are usually single-celled and contain a flagellum that allows them to swim in water.
Chrysophytes are a phylum of plants that has over 1,000 different species. There could be hundreds of them in any given lake. For a variety of climatic conditions, each species has its own set of optimums and tolerances (pH, salinity, temperature, etc.).
A siliceous scale or plate is connected to the cell wall of some species.
Scales fall to the lake's bottom and are preserved in the sediments when scaled-chrysophyte cells die.