Table 1.

Characteristics of study sites

Property	Lake Brienz	Lake Zug South Basin	Reference(s)
Position	46°43′N, 7°58′E	47°7′N, 8°29′E
Elevation (m)	564	414
Surface area (km2)	29.8	16	21, 43
Maximum depth (m)	259	200	21, 43
Volume (km3)	5.15	2.0	21, 43
Primary inflow	Aare, Lütschine	Rigiaa
Primary outflow	Aare
Mean hydraulic residence time (yr)	2.7	14	21, 43
Trophic status	Oligotrophic	Eutrophic
Oxygen status	Oxic	Anoxic below 140–160 m	43