Deep chlorophyll maximum in temperate lakes with different trophic conditions − a rare or common phenomenon? | Knowledge and Management of Aquatic Ecosystems

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Table 2

Vertical variation of dissolved nutrient concentrations in lakes with different trophic status.

Trophic	Layer	NH₄⁺ [mg L⁻¹]	NO₃⁻ [mg L⁻¹]	NO₂⁻ [mg L⁻¹]	PO₄³⁻ [mg L⁻¹]
Mesotrophic	Epilimnion	0.063 ± 0.052	0.015 ± 0.015	0.007 ± 0.007	0.015 ± 0.007
	Metalimnion	0.062 ± 0.072	0.072 ± 0.098	0.006 ± 0.008	0.079 ± 0.158
	Hypolimnion	0.053 ± 0.064	0.104 ± 0.126	0.004 ± 0.004	0.012 ± 0.010
Eutrophic	Epilimnion	0.017 ± 0.032	0.003 ± 0.004	0.001 ± 0.001	0.003 ± 0.004
	Metalimnion	0.373 ± 0.826	0.065 ± 0.117	0.001 ± 0.001	0.176 ± 0.390
	Hypolimnion	0.689 ± 0.880	0.137 ± 0.192	0.005 ± 0.003	0.270 ± 0.241
Dystrophic	Epilimnion	0.028 ± 0.026	0.012 ± 0.015	0.001 ± 0.001	0.002 ± 0.003
	Metalimnion	0.024 ± 0.032	0.001 ± 0.001	0.001 ± 0.001	0.001 ± 0.001
	Hypolimnion	0.248 ± 0.241	0.004 ± 0.002	0.001 ± 0.001	0.002 ± 0.001

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