Now showing items 3772-3791 of 7896

    • The iron budget in ocean surface waters in the 20th and 21st centuries : projections by the Community Earth System Model version 1 

      Misumi, Kazuhiro; Lindsay, Keith; Moore, J. Keith; Doney, Scott C.; Bryan, Frank O.; Tsumune, Daisuke; Yoshida, Yoshikatsu (Copernicus Publications on behalf of the European Geosciences Union, 2014-01-04)
      We investigated the simulated iron budget in ocean surface waters in the 1990s and 2090s using the Community Earth System Model version 1 and the Representative Concentration Pathway 8.5 future CO2 emission scenario. We ...
    • The iron content of sediment samples in New York Bight obtained during R/V Caryn cruise 108, October 19 - 24, 1956 

      Corwin, N.; Ketchum, Bostwick H. (Woods Hole Oceanographic Institution, 1957)
      During R/V CARYN Cruise No. 108 to the New York Bight samples of the bottom were obtained with an orange peel dredge at 23 stations and additional bottom samples were obtained by aqualung divers. These samples have been ...
    • Iron in the Sargasso Sea (Bermuda Atlantic Time-series Study region) during summer : eolian imprint, spatiotemporal variability, and ecological implications 

      Sedwick, Peter N.; Church, Thomas M.; Bowie, Andrew R.; Marsay, Christopher M.; Ussher, Simon J.; Achilles, K. M.; Lethaby, P. J.; Johnson, Rodney J.; Sarin, M. M.; McGillicuddy, Dennis J. (American Geophysical Union, 2005-10-13)
      We report iron measurements for water column and aerosol samples collected in the Sargasso Sea during July-August 2003 (summer 2003) and April-May 2004 (spring 2004). Our data reveal a large seasonal change in the dissolved ...
    • Iron isotope fractionation in subterranean estuaries 

      Rouxel, Olivier J.; Sholkovitz, Edward R.; Charette, Matthew A.; Edwards, Katrina J. (2008-04-25)
      Dissolved Fe concentrations in subterranean estuaries, like their river-seawater counterparts, are strongly controlled by non-conservative behavior during mixing of groundwater and seawater in coastal aquifers. Previous ...
    • Iron isotope systematics in estuaries : the case of North River, Massachusetts (USA) 

      Escoube, Raphaelle; Rouxel, Olivier J.; Sholkovitz, Edward R.; Donard, Olivier F. X. (2009-04)
      Recent studies have suggested that rivers may present an isotopically light Fe source to the oceans. Since the input of dissolved iron from river water is generally controlled by flocculation processes that occur during ...
    • Iron limitation and the role of siderophores in marine Synechococcus 

      Rivers, Adam R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2009-06)
      Marine cyanobacteria in the genus Synechococcus are widely distributed and contribute significantly to global primary productivity. In many parts of the ocean their growth is limited by a lack of iron, an essential ...
    • Iron limitation of a springtime bacterial and phytoplankton community in the Ross Sea : implications for vitamin B12 nutrition 

      Bertrand, Erin M.; Saito, Mak A.; Lee, Peter A.; Dunbar, Robert B.; Sedwick, Peter N.; DiTullio, Giacomo R. (Frontiers Media, 2011-08-15)
      The Ross Sea is home to some of the largest phytoplankton blooms in the Southern Ocean. Primary production in this system has previously been shown to be iron limited in the summer and periodically iron and vitamin B12 ...
    • Iron stress in open-ocean cyanobacteria (Synechococcus, Trichodesmium, and Crocosphaera spp.) : identification of the IdiA protein 

      Webb, Eric A.; Moffett, James W.; Waterbury, John B. (American Society for Microbiology, 2001-12)
      Cyanobacteria are prominent constituents of the marine biosphere that account for a significant percentage of oceanic primary productivity. In an effort to resolve how open-ocean cyanobacteria persist in regions where the ...
    • Iron supplementation does not worsen respiratory health or alter the sputum microbiome in cystic fibrosis 

      Gifford, Alex H.; Alexandru, Diana M.; Li, Zhigang; Dorman, Dana B.; Moulton, Lisa A.; Price, Katherine E.; Hampton, Thomas H.; Sogin, Mitchell L.; Zuckerman, Jonathan B.; Parker, H. Worth; Stanton, Bruce A.; O'Toole, George A. (2013-10)
      Iron supplementation for hypoferremic anemia could potentiate bacterial growth in the cystic fibrosis (CF) lung, but clinical trials testing this hypothesis are lacking. Twenty-two adults with CF and hypoferremic anemia ...
    • Iron supply and demand in an Antarctic shelf ecosystem 

      McGillicuddy, Dennis J.; Sedwick, Peter N.; Dinniman, M. S.; Arrigo, Kevin R.; Bibby, Thomas S.; Greenan, Blair J. W.; Hofmann, Eileen E.; Klinck, John M.; Smith, Walker O.; Mack, S. L.; Marsay, Christopher M.; Sohst, Bettina M.; van Dijken, Gert L. (John Wiley & Sons, 2015-10-08)
      The Ross Sea sustains a rich ecosystem and is the most productive sector of the Southern Ocean. Most of this production occurs within a polynya during the November–February period, when the availability of dissolved iron ...
    • Irreversibly increased nitrogen fixation in Trichodesmium experimentally adapted to elevated carbon dioxide 

      Hutchins, David A.; Walworth, Nathan G.; Webb, Eric A.; Saito, Mak A.; Moran, Dawn M.; McIlvin, Matthew R.; Gale, Jasmine; Fu, Fei-Xue (Nature Publishing Group, 2015-09-01)
      Nitrogen fixation rates of the globally distributed, biogeochemically important marine cyanobacterium Trichodesmium increase under high carbon dioxide (CO2) levels in short-term studies due to physiological plasticity. ...
    • Is ASFA sufficient? The role of inexpensive multidisciplinary databases in the marine science 

      Hooper-Lane, Christopher; Atkins, David P. (IAMSLIC, 1997)
    • Is biological productivity enhanced at the New England shelfbreak front? 

      Zhang, Weifeng G.; McGillicuddy, Dennis J.; Gawarkiewicz, Glen G. (John Wiley & Sons, 2013-01-31)
      A two-dimensional (cross-shelf) numerical model of the mean seasonal circulation offshore of southern New England predicts upwelling at the shelfbreak front. Expected ramifications of this upwelling include enhancement of ...
    • Is global ocean sprawl a cause of jellyfish blooms? 

      Duarte, Carlos M.; Pitt, Kylie A.; Lucas, Cathy H.; Purcell, Jennifer E.; Uye, Shin-Ichi; Robinson, Kelly L.; Brotz, Lucas; Decker, Mary Beth; Sutherland, Kelly R.; Malej, Alenka; Madin, Laurence P.; Mianzan, Hermes; Gili, Josep-Maria; Fuentes, Veronica; Atienza, Dacha; Pages, Francesc; Breitburg, Denise; Malek, Jennafer; Graham, William M.; Condon, Robert H. (Ecological Society of America, 2012-09-07)
      Jellyfish (Cnidaria, Scyphozoa) blooms appear to be increasing in both intensity and frequency in many coastal areas worldwide, due to multiple hypothesized anthropogenic stressors. Here, we propose that the proliferation ...
    • Is it the global net? 

      Avery, Beth; Pretorius, Martha (IAMSLIC, 2002)
    • Is science as global as we think? 

      Wong, Bob B. M.; Kokko, Hanna (2005)
      A cornerstone of scientific practice is the perceived freedom with which knowledge is disseminated. But does the scientific community make good use of all that is available? Researchers have, on occasion, been accused of ...
    • Is the Faroe Bank Channel overflow hydraulically controlled? 

      Girton, James B.; Pratt, Lawrence J.; Sutherland, David A.; Price, James F. (American Meteorological Society, 2006-12)
      The overflow of dense water from the Nordic Seas through the Faroe Bank Channel (FBC) has attributes suggesting hydraulic control—primarily an asymmetry across the sill reminiscent of flow over a dam. However, this aspect ...
    • Is the northern high-latitude land-based CO2 sink weakening? 

      Hayes, Daniel J.; McGuire, A. David; Kicklighter, David W.; Gurney, Kevin R.; Burnside, T. J.; Melillo, Jerry M. (American Geophysical Union, 2011-08-30)
      Studies indicate that, historically, terrestrial ecosystems of the northern high-latitude region may have been responsible for up to 60% of the global net land-based sink for atmospheric CO2. However, these regions have ...
    • Is there a need for a Mediterranean interest group? 

      Collins, Jean (IAMSLIC, 2002)
    • iSAM2 : incremental smoothing and mapping using the Bayes tree 

      Kaess, Michael; Johannsson, Hordur; Roberts, Richard; Ila, Viorela; Leonard, John J.; Dellaert, Frank (2011-04-06)
      We present a novel data structure, the Bayes tree, that provides an algorithmic foundation enabling a better understanding of existing graphical model inference algorithms and their connection to sparse matrix factorization ...