Table 3. Predicted reduction in nutrient fluxes below six Andean dams after impoundment.

Dam	Current fluxes 106 tons y-1		With dam 106 tons y-1		Reduction 106 tons y-1		% change
	TP	TN	TP	TN	TP	TN	TP	TN
Angosto del Bala	0.177	0.233	0.002	0.021	0.175	0.212	-99	-91
TAM 40	0.201	0.280	0.005	0.043	0.196	0.237	-98	-85
Pongo de Aguirre	0.044	0.080	0.003	0.030	0.041	0.049	-92	-62
Pongo de Manseriche	0.125	0.195	0.006	0.051	0.119	0.144	-95	-74
Rosita	0.100	0.124	0.000	0.003	0.100	0.121	-100	-98
Inambari	0.015	0.031	0.002	0.016	0.013	0.016	-88	-50
TOTAL	0.662	0.944	0.019	0.164	0.643	0.780	-97	-83

Estimates assume 100% retention of particulate fractions and no retention of dissolved fractions. Sources for data used in calculations: [18, 61, 5], B. Forsberg, unpublished data, CAMREX PROJECT (http://dx.doi.org/10.3334/ORNLDAAC/904).