PCA plot based on environmental data of all 21 samples. Vectors representing physical-chemical parameters [Conductivity, pH, FAME, Nitrates (NO₃⁻), Ammonium (NH₄⁺), Manganese (Mn), Lead (Pb), Copper (Cu), Zinc (Zn), Lithium (Li), Uranium (U). Potassium (K), Phosphorus (P), Chemical Oxygen Demand (COD), Dissolved Oxygen (OD) and Bicarbonates].

  Part of: Teixeira MN, Almeida S, Feio MJ, Mortágua A, Sales M (2021) Effects of anthropogenic pressures on diatom communities using morphological and molecular approaches. ARPHA Conference Abstracts 4: e64998. https://doi.org/10.3897/aca.4.e64998