Table 1.

Sampling site description.

Municipality	Site description	Site name
Kintambo	Effluent from animal farm	K eff
	100 m upstream	K up
	100 m downstream	K down
Masina	Effluent from animal farm	M eff
	100 m upstream	M up
	100 m downstream	M down
Lake Ma Vallée	North of the Lake	control
	South of the Lake	control