Research Article

Water Quality of Urban Streams: The Allium cepa Seeds/Seedlings Test as a Tool for Surface Water Monitoring

Figure 1

Location of the sampling sites within the urban area of Santa Cruz do Sul. (a) Rio Grande do Sul State; (b) Vale do Rio Pardo Region; and (c) urban area of Santa Cruz do Sul; (S1u and S1d) Lajeado stream; (S2u and S2d) Preto stream; and (S3u and S3d) Pedras stream.