Fig. 1 in Testate amoebae: a review on their multiple uses as bioindicators

Fig. 1. Diverse bioindication properties shown by testate amoebae in lakes, peatlands, soil and sea marshes. (a) Variables liable to be identified by testate amoebae. (b) Paleoenvironmental variables recorded by testate amoebae. N: nitrogen, P: phosphorus, K: potassium, Mn: magnesium, Hg: mercury, Sc: scandium, Pb: lead, Fe: iron, Ba: barium, Cr: chromium, Zn: zinc, Co: cobalt, As: arsenic, Cu: copper, Ca: calcium.