Now showing items 244-263 of 838

  • Environmental assessment of metal exposure to corals living in Castle Harbour, Bermuda 

    Grumet-Prouty, Nancy; Goodkin, Nathalie F.; Jones, R.; Lamborg, Carl H.; Storlazzi, Curt D.; Hughen, Konrad A. (Elsevier B.V., 2013-05-07)
    Environmental contamination in Castle Harbour, Bermuda, has been linked to the dissolution and leaching of contaminants from the adjacent marine landfill. This study expands the evidence for environmental impact of leachate ...
  • Environmental distribution and persistence of Quahog Parasite Unknown (QPX) 

    Gast, Rebecca J.; Moran, Dawn M.; Audemard, Corinne; Lyons, M. Maille; DeFaveri, Jacquelin; Reece, Kimberly S.; Leavitt, Dale F.; Smolowitz, Roxanna M. (Inter-Research, 2008-09-24)
    Quahog Parasite Unknown (QPX) is the cause of mass mortality events of hard clams Mercenaria mercenaria from Virginia, USA, to New Brunswick, Canada. Aquaculture areas in Massachusetts, USA, have been particularly hard ...
  • Environmental metabolomics : databases and tools for data analysis 

    Longnecker, Krista; Futrelle, Joe; Coburn, Elizabeth; Kido Soule, Melissa C.; Kujawinski, Elizabeth B. (Elsevier, 2015-06-19)
    Metabolomics is the study of small molecules, or ‘metabolites’, that are the end products of biological processes. While -omics technologies such as genomics, transcriptomics, and proteomics measure the metabolic potential ...
  • Environmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems 

    Zappa, Christopher J.; McGillis, Wade R.; Raymond, Peter A.; Edson, James B.; Hintsa, Eric J.; Zemmelink, Hendrik J.; Dacey, John W. H.; Ho, David T. (American Geophysical Union, 2007-05-17)
    Air-water gas transfer influences CO2 and other climatically important trace gas fluxes on regional and global scales, yet the magnitude of the transfer is not well known. Widely used models of gas exchange rates are based ...
  • Environmental, biochemical and genetic drivers of DMSP degradation and DMS production in the Sargasso Sea 

    Levine, Naomi M.; Varaljay, Vanessa A.; Toole, Dierdre A.; Dacey, John W. H.; Doney, Scott C.; Moran, Mary Ann (2011-10)
    Dimethylsulfide (DMS) is a climatically relevant trace gas produced and cycled by the surface ocean food web. Mechanisms driving intraannual variability in DMS production and dimethylsulfoniopropionate (DMSP) degradation ...
  • Erosion of organic carbon in the Arctic as a geological carbon dioxide sink 

    Hilton, Robert G.; Galy, Valier; Gaillardet, Jerome; Dellinger, Mathieu; Bryant, Charlotte; O'Regan, Matt; Grocke, Darren R.; Coxall, Helen; Bouchez, Julien; Calmels, Damien (2015-05-12)
    Soils of the northern high latitudes store carbon over millennial timescales (103 yrs) and contain approximately double the carbon stock of the atmosphere1-3. Warming and associated permafrost thaw can expose soil organic ...
  • Erratum : GEOTRACES radium isotopes interlaboratory comparison experiment 

    Charette, Matthew A.; Dulaiova, Henrieta; Gonneea, Meagan E.; Henderson, Paul B.; Moore, Willard S.; Scholten, Jan C.; Pham, Mai Khanh (Association for the Sciences of Limnology and Oceanography, 2012-06)
    In our original paper, Charette, M. A., H. Dulaiova, M. E. Gonneea, P. B. Henderson, W. S. Moore, J. C. Scholten, and M. K. Pham. 2012. GEOTRACES radium isotopes interlaboratory comparison experiment. Limonol. Oceanogr.: ...
  • Erratum to “Deep ocean nutrients during the Last Glacial Maximum deduced from sponge silicon isotopic compositions” [Earth Planet. Sci. Lett. 292 (2010) 290–300] 

    Hendry, Katharine R.; Georg, R. Bastian; Rickaby, Rosalind E. M.; Robinson, Laura F.; Halliday, Alex N. (2010-12)
    The relative importance of biological and physical processes within the Southern Ocean for the storage of carbon and atmospheric pCO2 on glacial-interglacial timescales remains uncertain. Understanding the impact of surface ...
  • An estimate of the global distribution of radon emissions from the ocean 

    Schery, S. D.; Huang, S. (American Geophysical Union, 2004-10-07)
    There is a need for improved estimates of the radon (222Rn) flux density from the ocean for use in the modeling and interpretation of atmospheric radon in global climate and air pollution studies. We use a modification of ...
  • Estimates of new and total productivity in central Long Island Sound from in situ measurements of nitrate and dissolved oxygen 

    Collins, James R.; Raymond, Peter A.; Bohlen, Walter Franklin; Howard-Strobel, Mary M. (2013-01)
    Biogeochemical cycles in estuaries are regulated by a diverse set of physical and biological variables that operate over a variety of time scales. Using in situ optical sensors, we conducted a high-frequency time-series ...
  • Evaluating global ocean carbon models : the importance of realistic physics 

    Doney, Scott C.; Lindsay, Keith; Caldeira, Ken; Campin, J.-M.; Drange, Helge; Dutay, J.-C.; Follows, Michael J.; Gao, Y.; Gnanadesikan, Anand; Gruber, Nicolas; Ishida, Akio; Joos, Fortunat; Madec, G.; Maier-Reimer, Ernst; Marshall, John C.; Matear, Richard J.; Monfray, Patrick; Mouchet, Anne; Najjar, Raymond G.; Orr, James C.; Plattner, Gian-Kasper; Sarmiento, Jorge L.; Schlitzer, Reiner; Slater, Richard D.; Totterdell, Ian J.; Weirig, Marie-France; Yamanaka, Yasuhiro; Yool, A. (American Geophysical Union, 2004-09-15)
    A suite of standard ocean hydrographic and circulation metrics are applied to the equilibrium physical solutions from 13 global carbon models participating in phase 2 of the Ocean Carbon-cycle Model Intercomparison Project ...
  • Evaluating Southern Ocean biological production in two ocean biogeochemical models on daily to seasonal timescales using satellite chlorophyll and O2 / Ar observations 

    Jonsson, Bror F.; Doney, Scott C.; Dunne, John P.; Bender, Michael L. (Copernicus Publications on behalf of the European Geosciences Union, 2015-02-04)
    We assess the ability of ocean biogeochemical models to represent seasonal structures in biomass and net community production (NCP) in the Southern Ocean. Two models are compared to observations on daily to seasonal ...
  • Evaluating triple oxygen isotope estimates of gross primary production at the Hawaii Ocean Time-series and Bermuda Atlantic Time-series Study sites 

    Nicholson, David P.; Stanley, Rachel H. R.; Barkan, Eugeni; Karl, David M.; Luz, Boaz; Quay, Paul D.; Doney, Scott C. (American Geophysical Union, 2012-05-08)
    The triple oxygen isotopic composition of dissolved oxygen (17Δ) is a promising tracer of gross oxygen productivity (P) in the ocean. Recent studies have inferred a high and variable ratio of P to 14C net primary productivity ...
  • An evaluation of 14C age relationships between co-occurring foraminifera, alkenones, and total organic carbon in continental margin sediments 

    Mollenhauer, Gesine; Kienast, Markus; Lamy, Frank; Meggers, Helge; Schneider, Ralph R.; Hayes, John M.; Eglinton, Timothy I. (American Geophysical Union, 2005-01-25)
    Radiocarbon age relationships between co-occurring planktic foraminifera, alkenones and total organic carbon in sediments from the continental margins of Southern Chile, Northwest Africa and the South China Sea were ...
  • Evaluation of ocean carbon cycle models with data-based metrics 

    Matsumoto, K.; Sarmiento, Jorge L.; Key, Robert M.; Aumont, Olivier; Bullister, John L.; Caldeira, Ken; Campin, J.-M.; Doney, Scott C.; Drange, Helge; Dutay, J.-C.; Follows, Michael J.; Gao, Y.; Gnanadesikan, Anand; Gruber, Nicolas; Ishida, Akio; Joos, Fortunat; Lindsay, Keith; Maier-Reimer, Ernst; Marshall, John C.; Matear, Richard J.; Monfray, Patrick; Mouchet, Anne; Najjar, Raymond G.; Plattner, Gian-Kasper; Schlitzer, Reiner; Slater, Richard D.; Swathi, P. S.; Totterdell, Ian J.; Weirig, Marie-France; Yamanaka, Yasuhiro; Yool, A.; Orr, James C. (American Geophysical Union, 2004-04-02)
    New radiocarbon and chlorofluorocarbon-11 data from the World Ocean Circulation Experiment are used to assess a suite of 19 ocean carbon cycle models. We use the distributions and inventories of these tracers as quantitative ...
  • Evaluation of the flushing rates of Apalachicola Bay, Florida via natural geochemical tracers 

    Dulaiova, Henrieta; Burnett, William C. (2007-07-10)
    We used naturally occurring radium isotopes as tracers of water exchange in Apalachicola Bay, a shallow coastal-plain estuary in northwestern Florida. The bay receives fresh water and radium from the Apalachicola River, ...
  • Evaluation of the Southern Ocean O2/Ar-based NCP estimates in a model framework 

    Jonsson, Bror F.; Doney, Scott C.; Dunne, John P.; Bender, Michael L. (John Wiley & Sons, 2013-04-02)
    The sea-air biological O2 flux assessed from measurements of surface O2 supersaturation in excess of Ar supersaturation (“O2 bioflux”) is increasingly being used to constrain net community production (NCP) in the upper ...
  • Evidence for a broadly distributed Samoan-plume signature in the northern Lau and North Fiji Basins 

    Price, Allison A.; Jackson, Matthew G.; Blichert-Toft, Janne; Hall, Paul S.; Sinton, John M.; Kurz, Mark D.; Blusztajn, Jerzy S. (John Wiley & Sons, 2014-04-11)
    Geochemical enrichment of lavas in the northern Lau Basin may reflect the influx of Samoan-plume mantle into the region. We report major and trace element abundances and He-Sr-Nd-Hf-Pb-isotopic measurements for 23 submarine ...
  • Evidence for an extensive hydrothermal plume in the Tonga-Fiji region of the South Pacific 

    Lupton, John E.; Pyle, Douglas G.; Jenkins, William J.; Greene, Ronald; Evans, Leigh (American Geophysical Union, 2004-01-17)
    Several hydrographic stations in the vicinity of the Samoa Islands have 3He/4He above the regional background in the depth range of 1500–1800 m, indicating injection of mantle helium from a local hydrothermal source. The ...
  • Evidence for significant photochemical production of carbon monoxide by particles in coastal and oligotrophic marine waters 

    Xie, Huixiang; Zafiriou, Oliver C. (American Geophysical Union, 2009-12-09)
    Carbon monoxide (CO) photoproduction from particulate and chromophoric dissolved organic matter (CDOM) was determined in seawater from open-ocean and coastal areas. In confirmatory tests, poisoned or non-poisoned filtered ...