Footnotes

^hSee De Barr et al. 1997:

De Barr, H.J.W., M.A. Van Leeuwe, R. Scharek, L. Goeyens and P. Fritsche. 1997. Nutrient anomalies in Fragilariopsis kerguelensis blooms, iron deficiency and the nitrate/phosphate ratio (A.C. Redfield) of the Antarctic Ocean. Deep-Sea Research II, 44(1-2):229-260.