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3.2.2.2 -
Inorganic nutrients
3.2.2.2.1 -
Nitrate
Ace Lake (Fig 3.5a) and Pendant Lake (Fig 3.5b) both had low concentrations during
the 1999/2000 summer, but those for Pendant Lake were higher. Both lakes had
concentrations that were very low or below the level of detection during July, but increased
by September. During November, Pendant Lake levels increased again but Ace Lake levels
decreased to below the detection threshold. Triple Lake (Fig 3.5c) and Deep Lake (Fig 3.5d)
showed an increase in levels from January to July. Club Lake (Fig 3.5e) showed a decrease
over the same period. Deep Lake showed a reduction in levels during September whilst
Triple Lake increased. The reverse was seen during November. The concentration in Club
Lake was relatively uniform throughout the sampling period.
3.2.2.2.2 -
Nitrite
Nitrite concentrations in all five lakes (Fig 3.6a-e) were high during the 1999/2000
summer, but decreased considerably through the winter, and remained low through to
November.
3.2.2.2.3 -
Ammonium
Ammonium concentration profiles were similar for all five lakes. Low
concentrations during the first summer followed by a huge peak in Club (10x, Fig 3.7e),
Deep (7x, Fig 3.7d), Triple (5x, Fig 3.7c) and Pendant (7x, Fig 3.7b), and a small increase
(4µg LI
- 7µg L") in Ace Lake (Fig 3.7a) in July. The concentration then decreased to near
the level of detection in September and remained low in November, except Ace Lake which
had its highest concentrations during September (Fig. 3.7a).
3.2.2.2.4 -
Soluble reactive phosphate
Soluble reactive phosphate (SRP) showed a similar profile to ammonium with
concentrations higher in January to March than September to November, and peaking in
July, this was indicative of all five lakes. Generally concentrations in November were the
lowest recorded for the whole sampling season (Ace (Fig 3.8a); Pendant (Fig 3.8b): Triple
(Fig 3.8c); Deep (Fig 3.8d); Club (Fig 3.8e)).
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