Now showing items 1-11 of 11

  • Aspects of the biogeochemistry of carbohydrates in aquatic environments 

    Mopper, Kenneth (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1973-06)
    The goal of this thesis is to examine the distribution and diagenesis of carbohydrates in aquatic environments. The following questions are studied: what is the carbohydrate composition of sediment in different environments ...
  • Biogeochemical applications of compound-specific radiocarbon analysis 

    Pearson, Ann (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-10)
    Compound-specific carbon isotopic (δ13C and Δ14C) data are reported for lipid biomarkers isolated from Santa Monica Basin (SMB) and Santa Barbara Basin (SBB) surface sediments. These organic compounds represent ...
  • The biogeochemistry of 210Pb and 210Po in fresh waters and sediments 

    Benoit, Gaboury (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-01)
    The focus of this work was geochemical cycling of 210Pb in lakes, including the water column, sediments, and their interactions with each other. A special goal was to elucidate processes that might influence the distribution ...
  • The biogeochemistry of cobalt in the Sargasso Sea 

    Saito, Mak A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-02)
    Processes that enable marine phytoplankton to acquire trace metals are fundamental to our understanding of primary productivity and global carbon cycling. This thesis explored the biogeochemistry of cobalt using analytical ...
  • Biogeochemistry of dissolved free amino acids in marine sediments 

    Henrichs, Susan M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1980-08)
    Dissolved free amino acids (DFAA) were measured in interstitial water samples squeezed from sediments collected in a variety of depositional environments. These sediments were further characterized by measurements of ...
  • The biogeochemistry of marine nitrous oxide 

    Frame, Caitlin H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-06)
    Atmospheric nitrous oxide N2O concentrations have been rising steadily for the past century as a result of human activities. In particular, human perturbation of the nitrogen cycle has increased the N2O production rates ...
  • Insights into vitamin B12 production, acquisition, and use by marine microbes 

    Bertrand, Erin M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-02)
    The distribution and magnitude of marine primary production helps determine the ocean's role in global carbon cycling. Constraining factors that impact this productivity and elucidating selective pressures that drive the ...
  • Interactions of cadmium, zinc, and phosphorus in marine Synechococcus : field uptake, physiological and proteomic studies 

    Cox, Alysia D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-06)
    A combination of uptake field studies on natural phytoplankton assemblages and laboratory proteomic and physiological experiments on cyanobacterial isolates were conducted investigating the interactions of cadmium (Cd), ...
  • Molecular biogeochemistry of modern and ancient marine microbes 

    Waldbauer, Jacob R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-02)
    Biological activity has shaped the surface of the earth in numerous ways, but life’s most pervasive and persistent global impact has been the secular oxidation of the surface environment. Through primary production – the ...
  • Monthly variability in upper ocean biogeochemistry due to mesoscale eddy activity in the Saragasso Sea 

    Sweeney, Erin N. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-05)
    A comparison of monthly biogeochemical measurements made from 1993 to 1995, combined with hydrography and satellite altimetry, was used to observe the impacts of nine eddy events on primary productivity and particle flux ...
  • Relating the biogeochemistries of zinc, cobalt, and phosphorus to phytoplankton activities in the sea 

    Wisniewski, Rachel J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-06)
    This thesis explores the potential of zinc, cobalt, and phosphorus to influence primary production in the subarctic North Pacific, the Bering Sea, and the North Atlantic Ocean, In the North Pacific and Bering Sea, total ...