Now showing items 5157-5176 of 8640

    • N-loss isotope effects in the Peru oxygen minimum zone studied using a mesoscale eddy as a natural tracer experiment 

      Bourbonnais, Annie; Altabet, Mark A.; Charoenpong, Chawalit N.; Larkum, Jennifer; Hu, Haibei; Bange, Hermann W.; Stramma, Lothar (John Wiley & Sons, 2015-06-06)
      Mesoscale eddies in Oxygen Minimum Zones (OMZs) have been identified as important fixed nitrogen (N) loss hotspots that may significantly impact both the global rate of N-loss as well as the ocean's N isotope budget. They ...
    • N2 fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean 

      Heithoff, Abigail (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-02)
      Trichodesmium, a genus of diazotrophic cyanobacteria, is an important contributor to the marine nitrogen (N) and carbon (C) cycles. The extent to which Trichodesmium dinitrogen (N2) fixation contributes to the marine N ...
    • N2 fixation in eddies of the eastern tropical South Pacific Ocean 

      Löscher, Carolin; Bourbonnais, Annie; Dekaezemacker, Julien; Charoenpong, Chawalit N.; Altabet, Mark A.; Bange, Hermann; Czeschel, Rena; Hoffmann, Chris; Schmitz, Ruth (Copernicus Publications on behalf of the European Geosciences Union, 2016-05-18)
      Mesoscale eddies play a major role in controlling ocean biogeochemistry. By impacting nutrient availability and water column ventilation, they are of critical importance for oceanic primary production. In the eastern ...
    • The N456 Navigator system 

      Abrams, Lane J. (Woods Hole Oceanographic Institution, 2009-01)
      The N456 Navigator has been developed to assist in Long Baseline (LBL) acoustic navigation. Its two basic functions are generation of acoustic signals, and receipt and timing of returns. When combined with the new dsnav ...
    • Na+ imaging reveals little difference in action potential–evoked Na+ influx between axon and soma 

      Fleidervish, Ilya A.; Lasser-Ross, Nechama; Gutnick, Michael J.; Ross, William N. (2010-05-09)
      In cortical pyramidal neurons, the axon initial segment (AIS) plays a pivotal role in synaptic integration. It has been asserted that this property reflects a high density of Na+ channels in AIS. However, we here report ...
    • Najas flexilis (Hydrocharitaceae) in Alaska : a reassessment 

      Les, Donald H.; Les, Angela M.; King, Ursula M.; Peredo, Elena L. (New England Botanical Club, 2015-09-23)
      Fifteen Najas flexilis collections were made in Alaska during the summer of 2012, with 13 of the stations representing either new or formerly undocumented localities for this imperiled Alaskan species. These field collections ...
    • Names are key to the big new biology 

      Patterson, David J.; Cooper, J.; Kirk, Paul M.; Pyle, R. L.; Remsen, David P. (2010-09-20)
      Those who seek answers to big, broad questions about biology, especially questions emphasizing the organism (taxonomy, evolution, ecology), will soon benefit from an emerging names-based infrastructure. It will draw on ...
    • Nansen-bottle stations at the Woods Hole Oceanographic Institution 

      Warren, Bruce A. (2007-09-28)
      Nansen-bottle stations were occupied by ships and personnel of the Woods Hole Oceanographic Institution from 1931 to about 1981. Most of these data are in archives, but using them intelligently to depict the state of the ...
    • Nantucket shoals flux experiment (NSFE79) : part 2, moored array data report 

      Beardsley, Robert C.; Alessi, Carol A.; Vermersch, John A.; Brown, W. Steven; Pettigrew, Neal R.; Irish, James D.; Ramp, Steven R.; Schlitz, Ronald J.; Butman, Bradford (Woods Hole Oceanographic Institution, 1983-11)
      The Nantucket Shoals Flux Experiment (NSFE79) was conducted across the continental shelf and upper slope south of Nantucket from March, 1979 to April , 1980 to measure the flow of shelf water from the Georges Bank/Gulf of ...
    • Narrative of Chain cruise #43 : February - August 1964 

      Knott, Sydney T.; Bunce, Elizabeth T.; Bowin, Carl O.; Hersey, J. B.; Chase, R. L. (Woods Hole Oceanographic Institution, 1965-02)
      On CHAIN Cruise 43, 15 February to 21 August 1964, geophysical and geological observations were made in the North Atlantic Ocean, the Mediterranean and Red Seas, and the Western part of the Indian Ocean, along the track ...
    • Narratives can motivate environmental action : the Whiskey Creek ocean acidification story 

      Kelly, Ryan P.; Cooley, Sarah R.; Klinger, Terrie (2014-04)
      Even when environmental data quantify the risks and benefits of delayed responses to rapid anthropogenic change, institutions rarely respond promptly. We propose that narratives complementing environmental datasets can ...
    • The national undersea research program 

      Cooke, Constance B. (IAMSLIC, 1989)
    • Natural 14C in Saccoglossus bromophenolosus compared to 14C in surrounding sediments 

      Teuten, Emma L.; King, Gary M.; Reddy, Christopher M. (Inter-Research, 2006-10-23)
      The natural radiocarbon (14C) content of whole, gut voided Saccoglossus bromophenolosus collected in Lowes Cove, Maine, USA, was compared with that of a non-voided worm, sectioned individuals, and the natural product ...
    • Natural and synthetic estrogens in wastewater treatment plant effluent and the coastal ocean 

      Griffith, David R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-09)
      Steroidal estrogens are potent endocrine disrupting chemicals that are naturally excreted by vertebrates (e.g., humans and fish) and can enter natural waters through the discharge of treated and raw sewage. Because ...
    • Natural and unnatural oil slicks in the Gulf of Mexico 

      MacDonald, Ian R.; Garcia-Pineda, Oscar; Beet, Andrew R.; Daneshgar Asl, Samira; Feng, Lian; Graettinger, George D.; French-McCay, Deborah P.; Holmes, James; Hu, Chuanmin; Huffer, Fred W.; Leifer, Ira; Muller-Karger, Frank E.; Solow, Andrew R.; Silva, M.; Swayze, Gregg A. (John Wiley & Sons, 2015-12-28)
      When wind speeds are 2–10 m s−1, reflective contrasts in the ocean surface make oil slicks visible to synthetic aperture radar (SAR) under all sky conditions. Neural network analysis of satellite SAR images quantified the ...
    • A natural history of the deep-sea aplacophoran Prochaetoderma yongei and its relationship to confamilials (Mollusca, Prochaetodermatidae) 

      Scheltema, Amelie H.; Ivanov, Dmitry L. (2008-11-10)
      Previously published studies are woven together into a natural history of a deep-sea aplacophoran mollusc species, Prochaetoderma yongei Scheltema, 1985, and its confamilial species in the Prochaetodermatidae. This ...
    • Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean 

      Ardelan, M. V.; Holm-Hansen, O.; Hewes, C. D.; Reiss, Christian S.; Silva, N. S.; Dulaiova, Henrieta; Steinnes, E.; Sakshaug, E. (Copernicus Publications on behalf of the European Geosciences Union, 2010-01-05)
      As part of the US-AMLR program in January-February of 2006, 99 stations in the South Shetland Islands-Antarctic Peninsula region were sampled to understand the variability in hydrographic and biological properties related ...
    • Natural organobromine in marine sediments : new evidence of biogeochemical Br cycling 

      Leri, Alessandra C.; Hakala, J. Alexandra; Marcus, Matthew A.; Lanzirotti, Antonio; Reddy, Christopher M.; Myneni, Satish C. B. (American Geophysical Union, 2010-11-24)
      Organobromine (Brorg) compounds, commonly recognized as persistent, toxic anthropogenic pollutants, are also produced naturally in terrestrial and marine systems. Several enzymatic and abiotic bromination mechanisms have ...