Trace element distributions in an antarctic meromictic lake

1.	The relative abundance in Lake Bonney of the trace elements studied was BM>Fe>Cu>Ni>Mo>Co, with more than 90 per cent of each element in the monimolimnion.
2.	The monimolimnion contains concentrations of B which are probably toxic to phytoplankton, and Cu concentrations which are at least potetially toxic to these organisms.
3.	Concentrations of B, Cu, and Mn in the mixolimnion occassionally reach potentially toxic concentrations, but there exist mitigating influences such as high calcium levels.
4.	The relative amounts of trace elements contributed by the Sollas-Lacroix meltstream to the lake were Mn>Fe>Cu>NiCo>B. Except for Co and Mo, the Sollas-Lacroix meltstream did not appear to contribute trace elements in quantities which would explain the weekly changes found in the mixolimnion.