Text Box: Depth
Depth
in vivo Chl
oC
Epilimnion
Hypolimnion
Metalimnion
Typical Summer Chlorophyll Profile
DCM
In oligotrophic lakes, majority of production can occur below epilimnion.  This is because particulates in water column (i.e. algae) sparse enough to permit light penetration to depth, nutrients higher at depth.  Can have potential consequences for depth distribution of zooplankton.