Submerged Groundwater Discharges as Source of Fecal Material in Protected Karstic Coastal Areas

Figure 5

Principal Component Analysis (PCA) by variable (a) and site (b) based on the presence and concentration of sterols and stanols at each sampling station in Nortes season. The red circle identifies the group that contributes coprostanol (CO) and epicoprostanol (EP).

(a)

(b)