TABLE 2.

Chemical concentrations illustrating the stratified condition of Mono Lake at time of sampling^a

Characteristic	Surface (0–10 m)	Oxycline (10–15 m)	Deep (15–25 m)
[O2] (μM)	250		0
Salinity (g liter−1)b	75	80–86	88
[CH4] (μM)	0	2	5
[NH4+] (μM)	1	2–10	25
Temp (°C)	20	8	4

^aParameter values are representative of both April and July 1995 sampling dates (only ammonium concentration differed significantly between April and July, being higher in July). The oxycline interval is defined by the region of rapid change in oxygen concentration from nearly 250 to 0 μM in the space of a few meters, so no independent value is provided for that variable in the oxycline region. 

^bReference 17