Iron (Fe) is an essential micronutrient for marine organisms, and it is now well established
that low Fe availability controls phytoplankton productivity, community structure, and …

In addition to control by major nutrient elements (nitrogen, phosphorus, and silicon) the
productivity and species composition of marine phytoplankton communities are also …

A new method, based on the direct detection of iron‐humic substance (HS) species by
cathodic strip** voltammetry (CSV), is used to determine the iron binding capacity and …

The photosynthetic picocyanobacteria and eukaryotic microorganisms that inhabit the open
ocean must be able to supply iron for their photosynthetic and respiratory needs from the …

Trace elements in seawater can be limiting factors of biological productivity, tracers of ocean
circulation and biogeochemical processes, and proxies for paleoceanography. The global …

The organic complexation of dissolved iron was determined from full water column depth
profile samples collected on the US GEOTRACES North Atlantic Section cruises in 2010 and …

The distribution of dissolved iron (Fe), total organic Fe-binding ligands, and siderophores
were measured between the surface and 400 m at Station ALOHA, a long term ecological …

Characterization of the speciation of iron and copper is an important objective of the
GEOTRACES Science Plan. To incorporate speciation measurements into such a …

The chemical speciation of iron in seawater is typically determined by cathodic strip**
voltammetry (CSV) making use of ligand competition between an electroactive ligand added …

Prochlorococcus and Synechococcus are the most abundant photosynthesizing organisms
in the oceans. Gene content variation among picocyanobacterial populations in separate …