Figure 1.
Map of study zones in Central Chile. a) Enlargement of study zones. b) Photo of the outfall.
Figure 2.
Diagram of algal thallus parts of Lessonia trabeculata sampled for metal analyses.
Table 1.
Metal measures in certified material BCSS-1 (marine sediment) and BCR-279 (sea lettuce, Ulva lactuca). Confidence intervals at 95% (n = 3).
Table 2.
Compensation depths and bathymetry in sampling stations from the outfall and control zones.
Table 3.
Metal concentrations in sediments and measured in the outfall wastewaters.
Table 4.
Multivariate analysis of variance (MANOVA) at 95% confidence showing interactions between main factors (zones, sampling stations, and algal parts) and 9 dependent variables assessed (metals).
Figure 3.
Metal concentrations in different thallus parts of L. trabeculata collected from different sampling stations.
Sampling stations located at 5,30 and 60 m from the sewage pipe at the outfall zone, named 1V, 2V, and 3V, respectively; Same sampling design at control zone, sediment samples taken at 5, 30, and 60 m from the shore (reference point, no outfall), named 1F, 2F, and 3F, respectively. Sampling carried out during austral summer (January) of 2009. Intervals at 95% confidence (n = 3).
Figure 4.
Principal component analysis (PCA) of metals measured in blades, stipes and holdfasts of L. trabeculata from the different sampling stations.
Sampling stations located at 5, 30 and 60 m from the sewage pipe at the outfall zone, named 1V, 2V, and 3V, respectively; Same sampling design at control zone, sediment samples taken at 5, 30, and 60 m from the shore (reference point, no outfall), named 1F, 2F, and 3F, respectively.
Table 5.
Tendencies from MANOVA and posteriori Tukey test.
Table 6.
Correlations (R values) of metal concentrations in sediments and thallus parts of L. trabeculata.