We collected zooplankton with a 243 um (micron) net. This means the mesh size of the net is 243 microns or 0.243 millimeters. The abbreviation for micron is the Greek symbol mu (I don’t know how to do that in WordPress!) followed by an “m.” This is an important detail, because it means we only sampled the “macrozooplankton” community. There are plenty of species smaller than 243 um that we did not sample.
We used a YSI 550 dissolved oxygen meter to measure temperature and dissolved oxygen. Both temperature and oxygen were measured directly below the water’s surface.