Organic dissolved iron (dFe)—binding ligands were measured by competitive ligand exchange—adsorptive cathodic stripping voltammetry (CLE‐ACSV) at multiple analytical windows (side reaction coefficient of salicylaldoxime, α Fe(SA) 2 = 30, 60 and 100) in surface and benthic boundary layer (BBL) samples along the central California coast during spring and summer. The weakest ligands were detected in the BBL at the lowest analytic...

The physicochemical speciation of dissolved iron (Fe) across natural dissolved Fe gradients in the oceanic and shelf domains of the southeastern Bering Sea was examined in surface and subsurface samples using competitive ligand exchange‐adsorptive cathodic stripping voltammetry with the added ligand salicylaldoxime. Two ligand classes were measured in all samples, a stronger L 1 ligand class and a weaker L 2 ligand class. Cond...

Dissolved iron (Fe) speciation in the Columbia River plume, the San Francisco Bay plume, and the Columbia River estuary was investigated using competitive ligand exchange‐adsorptive cathodic stripping voltammetry (CLE‐ACSV) with the added ligand salicylaldoxime. A stronger L 1 ‐type Fe‐binding ligand class was measured in all surface samples, and in the Columbia River estuary. A weaker L 2 ‐type ligand class was present in the...

The Dutch elm disease fungus Ophiostoma novo‐ulmi , which has destroyed billions of elm trees worldwide, originally invaded Europe as a series of clonal populations with a single mating type (MAT‐2) and a single vegetative incompatibility (vic) type. The populations then rapidly became diverse with the appearance of the MAT‐1 type and many vegetative incompatibility types . Here, we have investigated the mechanism using isolat...