Search Results - "Bundy, Randelle M"

Nutrient release to oceans from buoyancy-driven upwelling at Greenland tidewater glaciers by Cape, Mattias R., Straneo, Fiammetta, Beaird, Nicholas, Bundy, Randelle M., Charette, Matthew A.

“…The discharge of nutrient-rich meltwater from the Greenland Ice Sheet has emerged as a potentially important contributor to regional marine primary production…”
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Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean by Pinedo-González, Paulina, Hawco, Nicholas J., Bundy, Randelle M., Armbrust, E. Virginia, Follows, Michael J., Cael, B. B., White, Angelicque E., Ferrón, Sara, Karl, David M., John, Seth G.

“…Fossil-fuel emissions may impact phytoplankton primary productivity and carbon cycling by supplying bioavailable Fe to remote areas of the ocean via…”
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Glaciers and Nutrients in the Canadian Arctic Archipelago Marine System by Bhatia, Maya P., Waterman, Stephanie, Burgess, David O., Williams, Patrick L., Bundy, Randelle M., Mellett, Travis, Roberts, Megan, Bertrand, Erin M.

“…The Canadian Arctic Archipelago (CAA) is vulnerable to climate warming, and with over 300 tidewater glaciers, is a hotspot for enhanced glacial retreat and…”
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Iron-binding ligands and humic substances in the San Francisco Bay estuary and estuarine-influenced shelf regions of coastal California by Bundy, Randelle M., Abdulla, Hussain A.N., Hatcher, Patrick G., Biller, Dondra V., Buck, Kristen N., Barbeau, Katherine A.

“…Dissolved iron (dFe) and organic dFe-binding ligands were determined in San Francisco Bay, California by competitive ligand exchange adsorptive cathodic…”
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Acquisition of organically complexed copper by marine phytoplankton and bacteria in the northeast subarctic Pacific Ocean by Semeniuk, David M., Bundy, Randelle M., Payne, Chris D., Barbeau, Katherine A., Maldonado, Maria T.

“…Copper (Cu) is an essential micronutrient for marine phytoplankton, but can cause toxicity at elevated intracellular concentrations. The majority of Cu…”
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Sources, sinks, and cycling of dissolved organic copper binding ligands in the ocean by Ruacho, Angel, Richon, Camille, Whitby, Hannah, Bundy, Randelle M.

“…Abstract Organic Cu-binding ligands have a fundamental influence on Cu distributions in the global ocean and they complex >99% of the dissolved Cu in seawater…”
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Distinct pools of dissolved iron-binding ligands in the surface and benthic boundary layer of the California Current by Bundy, Randelle M., Biller, Dondra V., Buck, Kristen N., Bruland, Kenneth W., Barbeau, Katherine A.

“…Organic dissolved iron (dFe)–binding ligands were measured by competitive ligand exchange–adsorptive cathodic stripping voltammetry (CLE-ACSV) at multiple…”
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The organic complexation of iron and copper: an intercomparison of competitive ligand exchange-adsorptive cathodic stripping voltammetry (CLE-ACSV) techniques by Buck, Kristen N., Moffett, James, Barbeau, Katherine A., Bundy, Randelle M., Kondo, Yoshiko, Wu, Jingfeng

“…Characterization of the speciation of iron and copper is an important objective of the GEOTRACES Science Plan. To incorporate speciation measurements into such…”
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The composition of dissolved iron in the dusty surface ocean: An exploration using size-fractionated iron-binding ligands by Fitzsimmons, Jessica N., Bundy, Randelle M., Al-Subiai, Sherain N., Barbeau, Katherine A., Boyle, Edward A.

“…The size partitioning of dissolved iron and organic iron-binding ligands into soluble and colloidal phases was investigated in the upper 150m of two stations…”
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Elevated sources of cobalt in the Arctic Ocean by Bundy, Randelle M, Tagliabue, Alessandro, Hawco, Nicholas J, Morton, Peter L, Twining, Benjamin S, Hatta, Mariko, Noble, Abigail E, Cape, Mattias R, John, Seth G, Cullen, Jay T, Saito, Mak A

“…Cobalt (Co) is an important bioactive trace metal that is the metal cofactor in cobalamin (vitamin B12) which can limit or co-limit phytoplankton growth in…”
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Distinct Siderophores Contribute to Iron Cycling in the Mesopelagic at Station ALOHA by Bundy, Randelle M., Boiteau, Rene M., McLean, Craig, Turk-Kubo, Kendra A., McIlvin, Matt R., Saito, Mak A., Van Mooy, Benjamin A. S., Repeta, Daniel J.

“…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…”
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Structural Characterization of Natural Nickel and Copper Binding Ligands along the US GEOTRACES Eastern Pacific Zonal Transect by Boiteau, Rene M., Till, Claire P., Ruacho, Angel, Bundy, Randelle M., Hawco, Nicholas J., McKenna, Amy M., Barbeau, Katherine A., Bruland, Kenneth W., Saito, Mak A., Repeta, Daniel J.

“…Organic ligands form strong complexes with many trace elements in seawater. Various metals can compete for the same ligand chelation sites, and the final…”
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Iron-copper interactions in iron-limited phytoplankton in the northeast subarctic Pacific Ocean by Semeniuk, David M., Taylor, Rebecca L., Bundy, Randelle M., Johnson, W. Keith, Cullen, Jay T., Robert, Marie, Barbeau, Katherine A., Maldonado, Maria T.

“…In August 2010, iron (Fe) and Fe and copper (Cu) addition incubation experiments were conducted at two low Fe stations (P20 and P26) along Line P, off the…”
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Potential interactions between diatoms and bacteria are shaped by trace element gradients in the Southern Ocean by Sterling, Alexa R., Holland, Laura Z., Bundy, Randelle M., Burns, Shannon M., Buck, Kristen N., Chappell, P. Dreux, Jenkins, Bethany D.

“…The growth of diatoms in the Southern Ocean, especially the region surrounding the West Antarctic Peninsula, is frequently constrained by low dissolved iron…”
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Marine Community Metabolomes Carry Fingerprints of Phytoplankton Community Composition by Heal, Katherine R, Durham, Bryndan P, Boysen, Angela K, Carlson, Laura T, Qin, Wei, Ribalet, François, White, Angelicque E, Bundy, Randelle M, Armbrust, E Virginia, Ingalls, Anitra E

“…Phytoplankton transform inorganic carbon into thousands of biomolecules that represent an important pool of fixed carbon, nitrogen, and sulfur in the surface…”
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Diverse arsenic‐containing lipids in the surface ocean by Heal, Katherine R., Maloney, Ashley E., Ingalls, Anitra E., Bundy, Randelle M.

“…Arsenic is present at nanomolar levels throughout the ocean, and microbes assimilate this potentially toxic element due to its similarity to inorganic…”
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Iron-Binding Ligands in the Southern California Current System: Mechanistic Studies by Bundy, Randelle M, Jiang, Mingshun, Carter, Melissa, Barbeau, Katherine A

“…The distributions of dissolved iron and organic iron-binding ligands were examined in water column profiles and deckboard incubation experiments in the…”
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Correction for Heal et al., "Marine Community Metabolomes Carry Fingerprints of Phytoplankton Community Composition" by Heal, Katherine R, Durham, Bryndan P, Boysen, Angela K, Carlson, Laura T, Qin, Wei, Ribalet, François, White, Angelicque E, Bundy, Randelle M, Armbrust, E Virginia, Ingalls, Anitra E

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Copiotrophic marine bacteria are associated with strong iron‐binding ligand production during phytoplankton blooms by Hogle, Shane L., Bundy, Randelle M., Blanton, Jessica M., Allen, Eric E., Barbeau, Katherine A.

“…Although marine bacteria were identified nearly two decades ago as potential sources for strong iron‐binding organic ligands detected in seawater, specific…”
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Petrobactin, a siderophore produced by Alteromonas, mediates community iron acquisition in the global ocean by Manck, Lauren E., Park, Jiwoon, Tully, Benjamin J., Poire, Alfonso M., Bundy, Randelle M., Dupont, Christopher L., Barbeau, Katherine A.

“…It is now widely accepted that siderophores play a role in marine iron biogeochemical cycling. However, the mechanisms by which siderophores affect the…”
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