Long Pond, Station DEP1:  Oxygen Concentration as a function of depth and julian day.  Secchi Depth is plotted as yellow triangles.  Total phosphorus concentrations are plotted as stars scaled to concentration.  The lower panel shows temperature as a function of depth and julian day.

 

An interesting feature at this site is the inversion of oxygen at 10 meters depth from day 200-225.  This is probably due to photosynthetic oxygen production below  the thermocline.