Now showing items 532-551 of 932

    • Methods of oil detection in response to the Deepwater Horizon oil spill 

      White, Helen K.; Conmy, Robyn N.; MacDonald, Ian R.; Reddy, Christopher M. (The Oceanography Society, 2016-09)
      Detecting oil in the northern Gulf of Mexico following the Deepwater Horizon oil spill presented unique challenges due to the spatial and temporal extent of the spill and the subsequent dilution of oil in the environment. ...
    • Methylmercury cycling in sediments on the continental shelf of southern New England 

      Hammerschmidt, Chad R.; Fitzgerald, William F. (2005-10-26)
      Exposure of humans to monomethylmercury (MMHg) occurs primarily through consumption of marine fish, yet there is limited understanding concerning the bioaccumulation and biogeochemistry of MMHg in the biologically productive ...
    • Methylmercury in marine ecosystems : spatial patterns and processes of production, bioaccumulation, and biomagnification 

      Chen, Celia; Amirbahman, Aria; Fisher, Nicholas S.; Harding, Gareth; Lamborg, Carl H.; Nacci, Diane E.; Taylor, David (2008-09-30)
      The spatial variation of MeHg production, bioaccumulation and biomagnification in marine food webs is poorly characterized but critical to understanding the links between sources and higher trophic levels such as fish ...
    • Microbes and the marine phosphorus cycle 

      Dyhrman, Sonya T.; Ammerman, James W.; Van Mooy, Benjamin A. S. (Oceanography Society, 2007-06)
      Phosphorus (P) is fundamental to life, and years of study in marine systems have built a broad understanding of the marine P cycle. Various aspects of marine P biogeochemistry have been reviewed previously ...
    • Microbial activity in the marine deep biosphere : progress and prospects 

      Orcutt, Beth N.; LaRowe, Douglas E.; Biddle, Jennifer F.; Colwell, Frederick S.; Glazer, Brian T.; Kiel Reese, Brandi; Kirkpatrick, John B.; Lapham, Laura L.; Mills, Heath J.; Sylvan, Jason B.; Wankel, Scott D.; Wheat, C. Geoffrey (Frontiers Media, 2013-07-11)
      The vast marine deep biosphere consists of microbial habitats within sediment, pore waters, upper basaltic crust and the fluids that circulate throughout it. A wide range of temperature, pressure, pH, and electron donor ...
    • Microbial diversity and methanogenic activity of Antrim Shale formation waters from recently fractured wells 

      Wuchter, Cornelia; Banning, Erin C.; Mincer, Tracy J.; Drenzek, Nicholas J.; Coolen, Marco J. L. (Frontiers Media, 2013-12-06)
      The Antrim Shale in the Michigan Basin is one of the most productive shale gas formations in the U.S., but optimal resource recovery strategies must rely on a thorough understanding of the complex biogeochemical, microbial, ...
    • Microbial interactions associated with biofilms attached to Trichodesmium spp. and detrital particles in the ocean 

      Hmelo, Laura R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)
      Quorum sensing (QS) via acylated homoserine lactones (AHLs) was discovered in the ocean, yet little is known about its role in the ocean beyond its involvement in certain symbiotic interactions. The objectives of this ...
    • Microbial production and consumption of marine dissolved organic matter 

      Becker, Jamie W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-06)
      Marine phytoplankton are the principal producers of oceanic dissolved organic matter (DOM), the organic substrate responsible for secondary production by heterotrophic microbes in the sea. Despite the importance of DOM ...
    • Microbial- and thiosulfate-mediated dissolution of mercury sulfide minerals and transformation to gaseous mercury 

      Vazquez-Rodriguez, Adiari I.; Hansel, Colleen M.; Zhang, Tong; Lamborg, Carl H.; Santelli, Cara M.; Webb, Samuel M.; Brooks, Scott C. (Frontiers Media, 2015-06-23)
      Mercury (Hg) is a toxic heavy metal that poses significant environmental and human health risks. Soils and sediments, where Hg can exist as the Hg sulfide mineral metacinnabar (β-HgS), represent major Hg reservoirs in ...
    • Minor revision to V4 region SSU rRNA 806R gene primer greatly increases detection of SAR11 bacterioplankton 

      Apprill, Amy; McNally, Sean; Parsons, Rachel; Webe, Laura (Inter-Research, 2015-06-04)
      High-throughput sequencing of small subunit ribosomal RNA (SSU rRNA) genes from marine environments is a widely applied method used to uncover the composition of microbial communities. We conducted an analysis of surface ...
    • A model for uranium, rhenium, and molybdenum diagenesis in marine sediments based on results from coastal locations 

      Morford, Jennifer L.; Martin, William R.; Francois, Roger; Carney, Caitlin M. (2008-12-31)
      The purpose of this research is to characterize the mobilization and immobilization processes that control the authigenic accumulation of uranium (U), rhenium (Re) and molybdenum (Mo) in marine sediments. We analyzed ...
    • Modeling comprehensive chemical composition of weathered oil following a marine spill to predict ozone and potential secondary aerosol formation and constrain transport pathways 

      Drozd, Greg T.; Worton, David R.; Aeppli, Christoph; Reddy, Christopher M.; Zhang, Haofei; Variano, Evan; Goldstein, Allen H. (John Wiley & Sons, 2015-11-09)
      Releases of hydrocarbons from oil spills have large environmental impacts in both the ocean and atmosphere. Oil evaporation is not simply a mechanism of mass loss from the ocean, as it also causes production of atmospheric ...
    • Modeling deep ocean shipping noise in varying acidity conditions 

      Udovydchenkov, Ilya A.; Duda, Timothy F.; Doney, Scott C.; Lima, Ivan D. (Acoustical Society of America, 2010-08-19)
      Possible future changes of ambient shipping noise at 0.1–1 kHz in the North Pacific caused by changing seawater chemistry conditions are analyzed with a simplified propagation model. Probable decreases of pH would cause ...
    • Modeling denitrification in aquatic sediments 

      Fennel, Katja; Brady, Damian; DiToro, Dominic; Fulweiler, Robinson W.; Gardner, Wayne S.; Giblin, Anne E.; McCarthy, Mark J.; Rao, Alexandra; Seitzinger, Sybil P.; Thouvenot-Korppoo, Marie; Tobias, Craig R. (2008-10-10)
      Sediment denitrification is a major pathway of fixed nitrogen loss from aquatic systems. Due to technical difficulties in measuring this process and its spatial and temporal variability, estimates of local, regional and ...
    • A modeling study of the seasonal oxygen budget of the global ocean 

      Jin, X.; Najjar, Raymond G.; Louanchi, F.; Doney, Scott C. (American Geophysical Union, 2007-05-09)
      An ecosystem model embedded in a global ocean general circulation model is used to quantify roles of biological and physical processes on seasonal oxygen variations. We find that the thermally induced seasonal net outgassing ...
    • Modeling the global ocean iron cycle 

      Parekh, Payal; Follows, Michael J.; Boyle, Edward A. (American Geophysical Union, 2004-01-07)
      We describe a model of the ocean transport and biogeochemical cycling of iron and the subsequent control on export production and macronutrient distributions. Ocean transport of phosphorus and iron are represented by a ...
    • Models : tools for synthesis in international oceanographic research programs 

      McGillicuddy, Dennis J.; deYoung, Brad; Doney, Scott C.; Glibert, Patricia M.; Stammer, Detlef; Werner, Francisco E. (Oceanography Society, 2010-09)
      Through its promotion of coordinated international research programs, the Intergovernmental Oceanographic Commission (IOC) has facilitated major progress on some of the most challenging problems in oceanography. Issues ...
    • A modified wire clamp system for thirty-liter Niskin bottles 

      Hammar, Terence R.; Sachs, Peter L.; Bacon, Michael P. (Woods Hole Oceanographic Institution, 1988-11)
      A modified clamping system for 30-liter Niskin bottles, consisting of a wire stop, a socket block, and a toggle clamp, has been designed and has been tested at sea. The modified system makes deployment and recovery of the ...
    • Moist synoptic transport of CO2 along the mid-latitude storm track 

      Parazoo, N. C.; Denning, A. S.; Berry, J. A.; Wolf, Aaron S.; Randall, D. A.; Kawa, S. Randolph; Pauluis, O.; Doney, Scott C. (American Geophysical Union, 2011-05-12)
      Atmospheric mixing ratios of CO2 are strongly seasonal in the Arctic due to mid-latitude transport. Here we analyze the seasonal influence of moist synoptic storms by diagnosing CO2 transport from a global model on moist ...
    • Molecular and isotopic records of combustion inputs to the environment over the last 250 years 

      Lima, Ana Lucia Cessel de (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-06)
      The most ubiquitous source of polycyclic aromatic hydrocarbons (PAHs) to the environment is incomplete combustion. This study generated a high-resolution historical record of pyrogenic PAH emissions since pre-industrial ...