MERLIM tasks Bio-availability Trace metals Fe, Zn and Co (incl. data) Carbon dioxide species Model development carbon dioxide species and uptake rates Model development metal speciation and uptake rates Diagnostics Molecular markers Physiological response studies (incl. data) Carbon isotope fractionation Model development carbon isotope fractionation Synergistic effects A. Effect of trace limitation on carbon and nitrogen metabolism B. Effect of iron-starvation on photosybthesis (incl. data) Physiological response to trace metal substitution (incl. data) Unifying model Fields evaluation ANT 16.3 (incl. data) MERLIM 98 (incl. data)