Table 1.

Organic matter (OM), total carbon (TC), total nitrogen (TN), ratio between TC and TN (C/N), total phosphorus (TP) concentrations at 2 and 10 cm of sediments sampled in the different zones of the Manso reservoir.

System	Depth (cm)	OM (% DW)	TC (% DW)	TN (% DW)	C/N (by atom)	TP (mg g DW-1)
River	2	9.97	5.03	0.39	12.90	0.07
	10	14.64	2.83	0.17	16.65	0.08
Transition	2	10.73	2.25	0.18	12.50	0.07
	10	15.82	5.56	0.32	17.38	0.07
Dam	2	11.31	2.90	0.22	13.18	0.08
	10	2.35	0.59	0.04	14.75	0.04