A Yellow
Springs
Instruments multi parameter probe that simultaneously
records the depth (via a pressure sensor), dissolved oxygen,
temperature,
conductivity, turbidity, chlorophyll, oxidation reduction potential and
pH at roughly 4 inch increments from the surface to the lake bottom.
Karen recording
some of the field data .
John and Karen are
collecting
samples at various points in
the water column using a Van Dorn. The bottles displayed
(above) were filled with water obtained via the Van Dorn
Karen is
collecting Secchi Disk transparency
measurements