Landscape Position Project at North Temperate Lakes LTER: Chemical Limnology 1998 - 2000

Parameters characterizing the chemical limnology and spatial attributes of 51 lakes were
surveyed as part of the Landscape Position Project. Parameters are measured at or close to
the deepest part of the lake. The following parameters are measured one meter from the
surface and two meters from the bottom of the lake: pH, total phosphorus, total nitrogen,
total silica. The following parameters are measured one meter from the surface: dissolved
organic carbon, total organic carbon, dissolved inorganic carbon, total inorganic carbon,
spectrophotometric absorbance (color scan), major anions and cations, alkalinity. Sampling
Frequency: once for conservative parameters (major ions, carbon, color, alkalinity); monthly
for one summer for other parameters (chlorophyll, nitrogen, phosphorus, pH, silica,
temperature, dissolved oxygen, and conductivity) Number of sites: 51