Environmental proxy, Iberian Pyrite Belt, Rare earth elements, Estuary pollution, Acid mine drainage, Mining, Seawater - chemistry, Water Pollutants, Chemical - analysis, Metals, Rare Earth - analysis, Environmental Monitoring - methods, Wetlands, Sulfur compounds, Pollution, Analysis, Estuaries, Environmental aspects, Tidal marshes, Sediments (Geology)
Diatoms - ultrastructure, Genetic Markers, Phylogeny, Genes, Chloroplast, Diatoms - genetics, Sequence Analysis, DNA