Now showing items 495-514 of 7611

    • B content and Si/C ratios from cultured diatoms (Thalassiosira pseudonana and Thalassiosira weissflogii) : relationship to seawater pH and diatom carbon acquisition 

      Mejia, Luz Maria; Isensee, Kirsten; Mendez-Vicente, Ana; Pisonero, Jorge; Shimizu, Nobumichi; Gonzalez, Cristina; Monteleone, Brian D.; Stoll, Heather M. (Elsevier, 2013-06-18)
      Despite the importance of diatoms in regulating climate and the existence of large opal-containing sediments in key air-ocean exchange areas, most geochemical proxy records are based on carbonates. Among them, Boron (B) ...
    • Bacterial diversity and successional patterns during biofilm formation on freshly exposed basalt surfaces at diffuse-flow deep-sea vents 

      Gulmann, Lara K.; Beaulieu, Stace E.; Shank, Timothy M.; Ding, Kang; Seyfried, William E.; Sievert, Stefan M. (Frontiers Media, 2015-09-10)
      Many deep-sea hydrothermal vent systems are regularly impacted by volcanic eruptions, leaving fresh basalt where abundant animal and microbial communities once thrived. After an eruption, microbial biofilms are often the ...
    • Bacterial group II introns in a deep-sea hydrothermal vent environment 

      Podar, Mircea; Mullineaux, Lauren S.; Huang, Hon-Ren; Perlman, Philip S.; Sogin, Mitchell L. (American Society for Microbiology, 2002-12)
      Group II introns are catalytic RNAs and mobile retrotransposable elements known to be present in the genomes of some nonmarine bacteria and eukaryotic organelles. Here we report the discovery of group II introns in a ...
    • A bacterial quorum-sensing precursor induces mortality in the marine coccolithophore, Emiliania huxleyi 

      Harvey, Elizabeth L.; Deering, Robert W.; Rowley, David C.; El Gamal, Abrahim; Schorn, Michelle A.; Moore, Bradley S.; Johnson, Matthew D.; Mincer, Tracy J.; Whalen, Kristen E. (Frontiers Media, 2016-02-03)
      Interactions between phytoplankton and bacteria play a central role in mediating biogeochemical cycling and food web structure in the ocean. However, deciphering the chemical drivers of these interspecies interactions ...
    • Bacterioplankton community shifts in an Arctic lake correlate with seasonal changes in organic matter source 

      Crump, Byron C.; Kling, George W.; Bahr, Michele; Hobbie, John E. (American Society for Microbiology, 2003-04)
      Seasonal shifts in bacterioplankton community composition in Toolik Lake, a tundra lake on the North Slope of Alaska, were related to shifts in the source (terrestrial versus phytoplankton) and lability of dissolved organic ...
    • Bacterivory by phototrophic picoplankton and nanoplankton in Arctic waters 

      Sanders, Robert W.; Gast, Rebecca J. (2011-11)
      Mixotrophy, the combination of phototrophy and heterotrophy within the same individual, is widespread in oceanic systems. Yet, neither the presence nor ecological impact of mixotrophs has been identified in an Arctic marine ...
    • Balancing end-to-end budgets of the Georges Bank ecosystem 

      Steele, John H.; Collie, Jeremy S.; Bisagni, James J.; Gifford, Dian J.; Fogarty, Michael J.; Link, Jason S.; Sullivan, B. K.; Sieracki, Michael E.; Beet, Andrew R.; Mountain, David G.; Durbin, Edward G.; Palka, D.; Stockhausen, W. T. (2007-05-09)
      Oceanographic regimes on the continental shelf display a great range in the time scales of physical exchange, biochemical processes and trophic transfers. The close surface-to-seabed physical coupling at intermediate scales ...
    • Baleen whales are not important as prey for killer whales Orcinus orca in high-latitude regions 

      Mehta, Amee V.; Allen, Judith M.; Constantine, Rochelle; Garrigue, Claire; Jann, Beatrice; Jenner, Curt; Marx, Marilyn K.; Matkin, Craig O.; Mattila, David K.; Minton, Gianna; Mizroch, Sally A.; Olavarría, Carlos; Robbins, Jooke; Russell, Kirsty G.; Seton, Rosemary E.; Steiger, Gretchen H.; Víkingsson, Gísli A.; Wade, Paul R.; Witteveen, Briana H.; Clapham, Phillip J. (Inter-Research, 2007-10-25)
      Certain populations of killer whales Orcinus orca feed primarily or exclusively on marine mammals. However, whether or not baleen whales represent an important prey source for killer whales is debatable. A hypothesis by ...
    • Ball release experiments on a centrifuge : misalignment between the buoyancy force and the axis of rotation 

      Riemenschneider, Ulrike; Sheremet, Vitalii A. (Cambridge University Press, 2006-09-15)
      Motivated by work on tilted convection (Sheremet, J. Fluid Mech., vol. 506, 2004, p. 217), a set of experiments is presented here using the same set-up of a tilted tank attached to a rotating centrifuge with a 2.5 m arm. ...
    • Banquet speaker: the endangered belugas of Cook Inlet 

      Cornick, Leslie (IAMSLIC, 2013)
    • Barium in twilight zone suspended matter as a potential proxy for particulate organic carbon remineralization : results for the North Pacific 

      Dehairs, Frank; Jacquet, S.; Savoye, Nicolas; Van Mooy, Benjamin A. S.; Buesseler, Ken O.; Bishop, James K. B.; Lamborg, Carl H.; Elskens, Marc; Baeyens, W.; Boyd, Philip W.; Casciotti, Karen L.; Monnin, C. (2008-01-22)
      This study focuses on the fate of exported organic carbon in the twilight zone at two contrasting environments in the North Pacific: the oligotrophic ALOHA site (22°45' N 158°W; Hawaii; studied during June–July 2004) and ...
    • Barium-isotopic fractionation in seawater mediated by barite cycling and oceanic circulation 

      Horner, Tristan J.; Kinsley, Christopher W.; Nielsen, Sune G. (2015-07-09)
      The marine biogeochemical cycle of Ba is thought to be controlled by particulate BaSO4 (barite) precipitation associated with the microbial oxidation of organic carbon and its subsequent dissolution in the BaSO4-undersa ...
    • Barnacle larvae in ice : survival, reproduction, and time to post settlement metamorphosis 

      Pineda, Jesus; DiBacco, Claudio; Starczak, Victoria R. (2005)
      Late stage larvae (cyprids) of the barnacle Semibalanus balanoides frequently encounter freezing conditions along the northwest Atlantic coast. S. balanoides cyprids survived for more than 4 weeks embedded in sea ice, and ...
    • Barnegat Bay-Little Egg Harbor Estuary : case study of a highly eutrophic coastal bay system 

      Kennish, Michael J.; Bricker, Suzanne B.; Dennison, William C.; Glibert, Patricia M.; Livingston, Robert J.; Moore, Kenneth A.; Noble, Rachel T.; Paerl, Hans W.; Ramstack, Joy M.; Seitzinger, Sybil P.; Tomasko, David A.; Valiela, Ivan (2006-09-26)
      The Barnegat Bay-Little Egg Harbor Estuary is classified here as a highly eutrophic estuary based on application of NOAA’s National Estuarine Eutrophication Assessment model. Because it is shallow, poorly flushed, and ...
    • The baroclinic adjustment of time-dependent shear flows 

      Poulin, Francis J.; Flierl, Glenn R.; Pedlosky, Joseph (American Meteorological Society, 2010-08)
      Motivated by the fact that time-dependent currents are ubiquitous in the ocean, this work studies the two-layer Phillips model on the beta plane with baroclinic shear flows that are steady, periodic, or aperiodic in time ...
    • Baroclinic flow around planetary islands in a double gyre : a mechanism for cross-gyre flow 

      Pedlosky, Joseph (American Meteorological Society, 2010-05)
      A quasigeostrophic, two-layer model is used to study the baroclinic circulation around a thin, meridionally elongated island. The flow is driven by either buoyancy forcing or wind stress, each of whose structure would ...
    • Baroclinic instability of a meridionally varying basic state 

      Meacham, Stephen P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1984-06)
      Several problems are addressed herein. They are loosely connected by the theme of resonant triad interactions. The main topic is the finite amplitude evolution of weakly unstable, linear eigenmodes in a meridionally ...
    • Baroclinic instability of time-dependent currents 

      Pedlosky, Joseph; Thomson, James M. (Cambridge University Press, 2003-08-19)
      The baroclinic instability of a zonal current on the beta-plane is studied in the context of the two-layer model when the shear of the basic current is a periodic function of time. The basic shear is contained in a zonal ...
    • Baroclinic vortices over a sloping bottom 

      LaCasce, Joseph H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-09)
      Nonlinear quasigeostrophic flows in two layers over a topographic slope are considered. The evolution depends on the size of two parameters which indicate the degree of nonlinearity at depth. The first measures the ...
    • Barotropic Rossby waves radiating from tropical instability waves in the Pacific Ocean 

      Farrar, J. Thomas (American Meteorological Society, 2011-06)
      Tropical instability waves are triggered by instabilities of the equatorial current systems, and their sea level signal, with peak amplitude near 5°N, is one of the most prominent features of the dynamic topography of the ...