Abstract
AbstractSeasonal and local chl a fluctuations were examined at two depth ranges in Shoal Lake, a productive Precambrian Shield system. Water residence time in the study area was short, without permanent summer stratification. Chl a fluctuations were significantly correlated with total molybdenum reactive phosphorus (MRP) and total inorganic nitrogen (TIN), but the types of relationships were different for the two nutrients. Chl a was also significantly positively correlated with total alkalinity and temperature, and inversely correlated with oxygen and light. MRP and dissolved organic matter appeared to be more important for near‐bottom chl than for surface chl. Principal component analysis identified 4 major dimensions in which the different locations could be compared in terms of seasonal chl a fluctuations.
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