Now showing items 282-301 of 889

  • Effects of nutrients, salinity, pH and light:dark cycle on the production of reactive oxygen species in the alga Chattonella marina 

    Liu, Wenhua; Au, Doris W. T.; Anderson, Donald M.; Lam, Paul K. S.; Wu, Rudolf S. S. (2007-06-03)
    Experiments were carried out to investigate the effects of nutrients, salinity, pH and light:dark cycle on growth rate and production of reactive oxygen species (ROS) by Chattonella marina, a harmful algal bloom (HAB) ...
  • Effects of size, age and photoperiod on hypoosmoregulation in brook trout, Salvelinus fontinalis 

    McCormick, Stephen Daniel (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-08)
    Brook trout (Salvelinus fontinalis) raised from eggs under two photoperiod and two feeding regimes were tested for physiological changes preparatory for transition from freshwater to seawater. Size, age, growth rate, ...
  • Effects of turbulence on the feeding rate of a pelagic predator : the planktonic hydroid Clytia gracilis 

    Adamik, Peter; Gallager, Scott M.; Horgan, Erich F.; Madin, Laurence P.; McGillis, Wade R.; Govindarajan, Annette F.; Alatalo, Philip (2005-12-14)
    Relatively little is known about the role of turbulence in a predator - prey system where the predator is a passive, pelagic forager. The Campanulariid hydroid Clytia gracilis (Cnidaria, Hydrozoa) is unusual because it ...
  • Effects of warm water intrusions on populations of macrozooplankton on Georges Bank, Northwest Atlantic 

    Brown, Harmon; Bollens, Stephen M.; Madin, Laurence P.; Horgan, Erich F. (2004-06-21)
    As part of the Georges Bank/North West Atlantic GLOBEC (Global Ocean Ecosystems Dynamics) Program, macrozooplankton and micronekton were collected on 30 Broad Scale Survey Cruises between January – June, 1995 –1999, using ...
  • Effusive and explosive volcanism on the ultraslow-spreading Gakkel Ridge, 85°E 

    Pontbriand, Claire W.; Soule, Samuel A.; Sohn, Robert A.; Humphris, Susan E.; Kunz, Clayton G.; Singh, Hanumant; Nakamura, Ko-ichi; Jakobsson, Martin; Shank, Timothy M. (American Geophysical Union, 2012-10-06)
    We use high-definition seafloor digital imagery and multibeam bathymetric data acquired during the 2007 Arctic Gakkel Vents Expedition (AGAVE) to evaluate the volcanic characteristics of the 85°E segment of the ultraslow ...
  • Electromagnetic flow sensors 

    Lawson, Kenneth; Kanwisher, John W. (Woods Hole Oceanographic Institution, 1974-03)
    Flow sensors based on the principle of electromagnetic induction were investigated as alternatives to commonly used mechanical devices utilizing rotors and propellers. Prototype sensors were constructed showing ...
  • Elemental signatures in otoliths of larval walleye pollock (Theragra chalcogramma) from the northeast Pacific Ocean 

    FitzGerald, Jennifer L.; Thorrold, Simon R.; Bailey, Kevin M.; Brown, Annette L.; Severin, Kenneth P. (U.S. Department of Commerce, 2004)
    The objectives of this study are to determine if larval walleye pollock from different geographic localities can be distinguished based on elemental signatures in their otoliths. By analyzing sagittal otoliths with both ...
  • Elevated pCO2 exposure during fertilization of the bay scallop Argopecten irradians reduces larval survival but not subsequent shell size 

    White, Meredith M.; Mullineaux, Lauren S.; McCorkle, Daniel C.; Cohen, Anne L. (Inter-Research, 2014-02-17)
    Ocean acidification, characterized by elevated partial pressure of CO2 (pCO2), generally has negative effects on early life stages of invertebrates. We tested the idea that fertilization is a critical CO2 exposure stage ...
  • Emerging zoonoses in marine mammals and seabirds of the Northeast U.S. 

    Bogomolni, Andrea L.; Ellis, Julie C.; Gast, Rebecca J.; Harris, B.; Pokras, M.; Touhey, Kathleen M.; Moore, Michael J. (IEEE, 2006-09)
    In the Northeast United States, marine vertebrates come into contact with each other and with humans through a variety of mechanisms which allow for the transfer of pathogens from one taxa to another. Though there are many ...
  • Emission of dimethylsulfide from Weddell Sea leads 

    Zemmelink, Hendrik J.; Houghton, Leah; Dacey, John W. H.; Worby, A. P.; Liss, P. S. (American Geophysical Union, 2005-12-10)
    The distribution of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) was examined in lead water in pack ice of the Weddell Sea. Samples were taken by pulling water into a syringe from ...
  • The encoding of individual identity in dolphin signature whistles : how much information is needed? 

    Kershenbaum, Arik; Sayigh, Laela S.; Janik, Vincent M. (Public Library of Science, 2013-10-23)
    Bottlenose dolphins (Tursiops truncatus) produce many vocalisations, including whistles that are unique to the individual producing them. Such “signature whistles” play a role in individual recognition and maintaining group ...
  • Environmental contaminants activate human and polar bear (Ursus maritimus) pregnane X receptors (PXR, NR1I2) differently 

    Lille-Langoy, Roger; Goldstone, Jared V.; Rusten, Marte; Milnes, Matthew R.; Male, Rune; Stegeman, John J.; Blumberg, Bruce; Goksoyra, Anders (Elsevier, 2015-02-10)
    Many persistent organic pollutants (POPs) accumulate readily in polar bears because of their position as apex predators in Arctic food webs. The pregnane X receptor (PXR, formally NR1I2, here proposed to be named promiscuous ...
  • Environmental correlates of blue and fin whale call detections in the North Pacific Ocean from 1997 to 2002 

    Stafford, Kathleen M.; Citta, John J.; Moore, Sue E.; Daher, Mary Ann; George, Joseph E. (Inter-Research, 2009-12-03)
    A 6 yr time series of blue whale Balaenoptera musculus and fin whale B. physalus call detections in the North Pacific Ocean was correlated with 3 oceanographic variables (sea-surface temperature, chlorophyll a concentration, ...
  • Environmental distribution and persistence of Quahog Parasite Unknown (QPX) 

    Gast, Rebecca J.; Moran, Dawn M.; Audemard, Corinne; Lyons, M. Maille; De Favari, Jacquelin; Reece, Kimberly S.; Leavitt, Dale F.; Smolowitz, Roxanna M. (Inter-Research, 2008-09-24)
    Quahog Parasite Unknown (QPX) is the cause of mass mortality events of hard clams Mercenaria mercenaria from Virginia, USA, to New Brunswick, Canada. Aquaculture areas in Massachusetts, USA, have been particularly hard ...
  • Environmental forcing of the Campeche cold-water coral province, southern Gulf of Mexico 

    Hebbeln, Dierk; Wienberg, C.; Wintersteller, P.; Freiwald, Andre; Becker, M.; Beuck, L.; Dullo, C.; Eberli, G. P.; Glogowski, S.; Matos, L.; Forster, N.; Reyes-Bonilla, H.; Taviani, Marco (Copernicus Publications on behalf of the European Geosciences Union, 2014-04-07)
    With an extension of > 40 km2 the recently discovered Campeche cold-water coral province located at the northeastern rim of the Campeche Bank in the southern Gulf of Mexico belongs to the largest coherent cold-water coral ...
  • Environmental health and the coastal zone 

    Stegeman, John J.; Solow, Andrew R. (National Institute of Environmental Health Sciences, 2002-11)
    Reconciling coastal development and the maintenance of a quality environment represent an enormous management challenge to both public and private interests. Wise management of coastal areas will require an understanding ...
  • Environmental sensing and response genes in cnidaria : the chemical defensome in the sea anemone Nematostella vectensis 

    Goldstone, Jared V. (2008-10)
    The starlet sea anemone Nematostella vectensis has been recently established as a new model system for the study of the evolution of developmental processes, as cnidaria occupy a key evolutionary position at the base of ...
  • Environmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems 

    Zappa, Christopher J.; McGillis, Wade R.; Raymond, Peter A.; Edson, James B.; Hintsa, Eric J.; Zemmelink, Hendrik J.; Dacey, John W. H.; Ho, David T. (American Geophysical Union, 2007-05-17)
    Air-water gas transfer influences CO2 and other climatically important trace gas fluxes on regional and global scales, yet the magnitude of the transfer is not well known. Widely used models of gas exchange rates are based ...
  • Environmental, biochemical and genetic drivers of DMSP degradation and DMS production in the Sargasso Sea 

    Levine, Naomi M.; Varaljay, Vanessa A.; Toole, Dierdre A.; Dacey, John W. H.; Doney, Scott C.; Moran, Mary Ann (2011-10)
    Dimethylsulfide (DMS) is a climatically relevant trace gas produced and cycled by the surface ocean food web. Mechanisms driving intraannual variability in DMS production and dimethylsulfoniopropionate (DMSP) degradation ...
  • Envisioning a marine biodiversity observation network 

    Duffy, J. Emmett; Amaral-Zettler, Linda A.; Fautin, Daphne G.; Paulay, Gustav; Rynearson, Tatiana A.; Sosik, Heidi M.; Stachowicz, John J. (University of California Press, 2013-05)
    Humans depend on diverse ocean ecosystems for food, jobs, and sustained well-being, yet many stressors threaten marine life. Extensive research has demonstrated that maintaining biodiversity promotes ocean health and service ...