Results show significant seasonal concentration variability for a number of trace elements.
In general, this variability results from the seasonal snow cover and its effects on runoff, flush of soils, the redox state, and residence time of lake waters. However, the Mn data suggest that similar seasonal concentration variations in these two systems do not necessarily result from the same processes. A more detailed study of alkali metal ratios would have the promise of separating seasonal vegetative effects from seasonal weathering effects. To address these questions soil water, spring, and vegetation samples are being collected.