TABLE 1.

Concentrations of taurine and cysteate in porewater from different microbial mats

Source of porewatera	Taurine concn (μM)	Cysteate concn (μM)
Stromatolite mat (8–10 mm)	0.545	0.065
Salt pond mat (72 ppt)	0.870	0.080
Salt pond mat (96 ppt)	2.340	NDb
Salt marsh mat (0–5 mm)	1.605	0.280
Salt marsh mat (5–10 mm)	1.150	ND
Salt marsh mat (10–20 mm)	0.200	ND
Salt marsh mat (20–30 mm)	ND	ND

^aThe salt pond porewater was recovered from the upper 15 mm. 

^bND, not detected.