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An evaluation of iron bioavailability and speciation in western Lake Superior with the use of combined physical, chemical, and biological assessment
An evaluation of iron bioavailability speciation in western Lake Superior use of combined physical chemical biological assessment
2014/4/18
An iron-dependent cyanobacterial bioreporter (Synechococcus strain KAS101) was used in unison with size-fractionated iron content (>0.45, <0.45, <0.02 μm), and chemical characterization of iron comple...
Extracellular production of superoxide by marine diatoms: Contrasting effects on iron redox chemistry and bioavailability
Extracellular production of superoxide marine diatoms Contrasting effects iron redox chemistry and bioavailability
2014/5/9
We report the extracellular production of superoxide in cultures of the marine diatoms Thalassiosira weissflogii and Thalassiosira pseudonana. In EDTA-buffered media with ~45 pmol L-1 iron (Fe)(III)',...
Phototransformation of riverine dissolved organic matter (DOM) in the presence of abundant iron: Effect on DOM bioavailability
Phototransformation riverine dissolved organic matter abundant iron DOM bioavailability
2014/5/14
We conducted studies with high-molecular-weight (HMW) and low-molecular-weight (LMW), hydrophobic, and hydrophilic dissolved organic matter (DOM) from an oligotrophic alpine river, the Tagliamento Riv...
Bioavailability of iron to Trichodesmium colonies in the western subtropical Atlantic Ocean
iron Trichodesmium colonies western subtropical Atlantic Ocean
2014/5/22
Trichodesmium provides new nitrogen (N) to marine surface waters via N2 fixation, a process that requires a substantial amount of iron (Fe). Organic ligands in seawater that bind Fe could either incre...
Bioavailability of DON from natural and anthropogenic sources to estuarine plankton
Bioavailability of DON from natural anthropogenic sources estuarine plankton
2014/5/26
Utilization of dissolved organic nitrogen (DON) from natural (forests) and anthropogenic (animal pastures, urban/suburban storm water runoff) sources (three sites per source) by estuarine plankton com...
Bioavailability of particle-associated silver, cadmium, and zinc to the estuarine amphipod, Leptocheirus plumulosus, through dietary ingestion
Bioavailability particle-associated silver cadmium zinc to the estuarine amphipod Leptocheirus plumulosus dietary ingestion
2014/6/17
We conducted experiments to determine effects of particle type on assimilatory metal bioavailability to Leptocheirus plumulosus, an infaunal, estuarine amphipod that is commonly used in sediment toxic...
Further evidence of elemental composition as an indicator of the bioavailability of humic substances to bacteria
elemental composition bioavailability humic substances to bacteria
2014/6/17
Batch culture experiments examined the ability of an isolated bacterial community to utilize four humic substances with similar molecular size but variable elemental composition. Univariate and multiv...