Dissolved iron below the euphotic zone
Sedimentary and mineral dust sources of dissolved iron to the world ocean
... of dissolved iron from sink- ing particles; and 3) an improved sedimentary source for dis- solved ...scavenged iron (90%) is put on sinking particles to remineralize deeper in the water ...driving ...
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A global compilation of dissolved iron measurements: focus on distributions and processes in the Southern Ocean
... A. Tagliabue et al.: A global compilation of dissolved iron measurements 2343 et al., 2003), as well as the large Patagonian plateau and as- sociated rivers and glaciers, the continental margins of the ...
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Fractionation of iron species and iron isotopes in the Baltic Sea euphotic zone
... 2003). Iron as a potentially limiting nutrient for cyanobacterial bloom development and nitrogen fixa- tion in the Baltic Sea has been suggested (Stal et ...by iron bioavailability, as previously sug- ...
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The diversity and biogeography of microeukaryotes in the euphotic zone of the northwestern Pacific Ocean
... Diatoms contribute 20% of global primary productivity and produce large quantities of dissolved organic matter (DOM) ( Armbrust, 2009 ; Myklestad, 2000 ). Interactions between diatoms and bacteria are well ...
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Sedimentary phosphorus and iron cycling in and below the oxygen minimum zone of the northern Arabian Sea
... minimum zone (OMZ) where relatively large fluxes of reac- tive P, mainly in organic matter, are deposited at the sediment ...stations below the OMZ that receive less reactive P phases, pore- water HPO 2− 4 ...
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Evidence for aggregation and export of cyanobacteria and nano-eukaryotes from the Sargasso Sea euphotic zone
... 2.4 Ancillary data BATS core data collected on these cruises are available from the Bermuda Institute of Ocean Sciences/Bermuda Atlantic Time-series Study web page (http://bats.bios.edu/). Specific details and ...
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Sources of dissolved iron to oxygen minimum zone waters on the Senegalese continental margin in the tropical North Atlantic Ocean: Insights from iron isotopes
... atmospheric versus benthic Fe inputs to the surface ocean of the tropical North Atlantic as an annual 616. mean remains uncertain[r] ...
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Modeling of the Dissolved Oxygen in a River with Storage Zone on the Banks
... model that explicitly considers the effect of transient storage on DO below a point source of BOD containing only the dissolved part of BOD. The model illustrates the importance of inclusion of storage ...
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Buildup/Washoff Model for Dissolved Iron in Stormwater Runoff
... There are a number of analytical methods available in principle for the determination of trace metals. In fact, however, there are only a few instrumental methods with sufficiently high detection power currently applied ...
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The 3He flux gauge in the Sargasso Sea: a determination of physical nutrient fluxes to the euphotic zone at the Bermuda Atlantic Time-series Site
... and dissolved inorganic nitrate near Bermuda at four points in ...the euphotic zone, where the two tracers become uncoupled due to differing boundary ...
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Factors influencing the dissolved iron input by river water to the open ocean
... Uptake of CO 2 in the ocean due to phytoplankton photo- synthesis is generally followed by a zooplankton bloom as grazers respond to the increased food supply. These popu- lations then produce marine snow, as fecal ...
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Dissolved iron distribution in the tropical and sub tropical South Eastern Pacific
... In the Chilean upwelling, DFe concentrations ranged be- tween 1.2–3.9 nM. These high values result from inputs from the continental margin and are likely maintained by anoxic conditions in the water corresponding to the ...
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Dissolved Iron Behavior in the Ravenglass Estuary Waters, An Implication on the Early Diagenesis
... Water samples were initially collected in 1 gallon polythene canisters by wading out into the estuary (or river or the sea) until the water depth was about 1m. These canisters were half filled with the water from the ...
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A dissolved cobalt plume in the oxygen minimum zone of the eastern tropical South Pacific
... of dissolved cobalt and labile dissolved cobalt from the US GEOTRACES GP16 transect in the South ...mum zone in the eastern South Pacific with highest concen- trations measured at the oxycline near ...
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High variability in dissolved iron concentrations in the vicinity of the Kerguelen Islands (Southern Ocean)
... Below, winter water (WW) is encountered with temperatures around 1.7 ◦ C at 225 and 115–210 m, respectively. The inclu- sion of TEW-3 in cluster 2 is debatable given its location at the plateau edge. Indeed, ...
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Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay
... The enhanced concentrations of DMn and DFe in the bot- tom waters indicate the role of sediments as a source of Fe and Mn, with probably resuspension in the BBL acting to transfer these elements to the water column. ...
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Seasonal development of iron limitation in the sub Antarctic zone
... from below the mixed layer via sub-seasonal storm events, which is not accessible to phytoplankton up- take due to iron limitation of nitrate reductase, could ac- count for the observed seasonal increase in ...
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Quantification of multiple simultaneously occurring nitrogen flows in the euphotic ocean
... µm). Dissolved inorganic ni- trogen (DIN) and DON were equated to the inorganic and organic nitrogen, respectively, in the dissolved fraction that passed through a polycarbonate membrane with a ...
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Ambient nitrate switches the ammonium consumption pathway in the euphotic ocean
... dominance below the nitracline was evidenced by pigment data in the SCS (for instance, in the H3 station of our cruise, prokaryotic phytoplankton account for ...of euphotic zone, Supplementary ...
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Dissolved iron (II) in the Baltic Sea surface water and implications for cyanobacterial bloom development
... Depth profiles were sampled using individual pre-washed all plastic Niskin bottles with elastic silicone bands as the clo- sure mechanism. Samples for Fe(II) and hydrogen peroxide (H 2 O 2 ) anal- ysis were taken from ...
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