Table 2.

Benthic fluxes (in mmol m⁻² d⁻¹) of O₂, NH₄⁺, and NO₃⁻ in the 12 studied Swiss lakes. Positive values represent fluxes from the overlying water into the sediments, negative values represent fluxes from the sediments to the overlying water.

Lake	Lake Group	Flux [mmol m −2 d −1 ]
		O 2	NH 4 +	NO 3 −
BRI	Pristine-alpine	8.59	– 0.15	0.60
LUC		6.72	– 0.63	0.74
SAR		2.58	– 0.19	0.46
WAL		6.88	– 0.30	0.88
BAL	Agriculture-influenced	8.77	– 4.19	3.14
HAL		2.73	– 3.14	1.16
SEM		5.41	– 0.43	0.31
ZUG		7.34	– 2.03	0.21
CON	Large-deep	4.91	– 0.29	1.33
GEN		10.7	– 0.43	0.67
MAG		6.10	– 1.44	0.96
NEU		7.79	– 0.23	2.41