Microscope-based phytoplankton community composition for Green Lake 4, 2000 - 2007.

These data represent phytoplankton community composition in Green Lake 4 observed during bi-weekly sampling events following ice-off during the 2000-2007 field seasons. Samples were collected from the deepest part of the lake using a Van Dorn sampler from depths of 0, 3, and 9 m. Samples from the inlet and outlet are grab samples. Phytoplankton samples were preserved in 1% Lugol’s solution. Cell counts for each taxonomic group were conducted using an inverted microscope with 1000x magnification. Taxonomic resolution was based on the imaging capabilities of the instrument and varies based on the size and distinguishing characteristics of the cells in a given taxonomic group. Please see details in Methods.