info:oai:utas.edu.au:6375info:ofi/fmt:xml:xsd:journalTrullTWTrull, TWDaviesDDavies, DCasciottiKLCasciotti, KL5-755March 20080967-0645Insights into nutrient assimilation and export in naturally iron-fertilized waters of the Southern Ocean from nitrogen, carbon and oxygen isotopesDeep-Sea Research Part II820-840article