Now showing items 1-20 of 149

  • Absolute probability estimates of lethal vessel strikes to North Atlantic right whales in Roseway Basin, Scotian Shelf 

    van der Hoop, Julie M., Angelia S. M. Vanderlaan, and Christopher T. Taggart. 2012. "Absolute probability estimates of lethal vessel strikes to North Atlantic right whales in Roseway Basin, Scotian Shelf." Ecological Applications 22(7): 2021-2033.
    Vessel strikes are the primary source of known mortality for the endangered North Atlantic right whale (Eubalaena glacialis). Multi-institutional efforts to reduce mortality associated with vessel strikes include vessel-routing ...
  • Accelerometer tags: detecting and identifying activities in fish and the effect of sampling frequency 

    Broell, Franziska, Takuji Noda, Serena Wright, Paolo Domenici, et al. 2013. "Accelerometer tags: detecting and identifying activities in fish and the effect of sampling frequency." Journal of Experimental Biology 216(7): 1255-1264.
    Monitoring and measuring the behaviour and movement of aquatic animals in the wild is typically challenging, though micro-accelerometer (archival or telemetry) tags now provide the means to remotely identify and quantify ...
  • Acoustic scattering from density and sound speed gradients: Modeling of oceanic pycnoclines 

    Ross, T., and A. C. Lavery. 2012. "Acoustic scattering from density and sound speed gradients: Modeling of oceanic pycnoclines." Journal of the Acoustical Society of America 131(1): 54-EL60. doi:10.1121/1.3669394 1© 2012 Acoustical Society of America
    A weak-scattering model that allows prediction of acoustic scattering from oceanic pycnoclines (and the accompanying sound speed gradients) based on hydrographic profiles is described. Model predictions, based on profiles ...
  • Acoustic scattering from double-diffusive microstructure 

    Lavery, Andone C., and Tetjana Ross. 2007. "Acoustic scattering from double-diffusive microstructure." Journal of the Acoustical Society of America 122(3): 1449-1462. doi:10.1121/1.2764475 © 2007 Acoustical Society of America
    Laboratory measurements of high-frequency broadband acoustic backscattering (200-600 kHz) from the diffusive regime of double-diffusive microstructure have been performed. This type of microstructure, which was characterized ...
  • The adjoint method of data assimilation used operationally for shelf circulation 

    Griffin, DA, and KR Thompson. 1996. "The adjoint method of data assimilation used operationally for shelf circulation." Journal of Geophysical Research-Oceans 101(C2): 3457-3477. DOI:10.1029/95JC03218
    A real-time shelf circulation model with data assimilation has been successfully used, possibly for the first time, on the outer Nova Scotian Shelf, The adjoint method was used to infer the time histories of flows across ...
  • Aerobic hydrogen production and dinitrogen fixation in the marine cyanobacterium Trichodesmium erythraeum IMS101 

    Punshon, Stephen, and Robert M. Moore. 2008. "Aerobic hydrogen production and dinitrogen fixation in the marine cyanobacterium Trichodesmium erythraeum IMS101." Limnology and Oceanography 53(6): 2749-2753. DOI:10.4319/lo.2008.53.6.2749
    Rates of hydrogen production and acetylene reduction were measured in aerobic cultures of the marine cyanobacterium Trichodesmium erythraeum IMS101 grown in a supplemented seawater medium low in combined inorganic nitrogen. ...
  • Air-Sea CO2 fluxes on the Scotian Shelf: seasonal to multi-annual variability 

    Shadwick, E. H., H. Thomas, A. Comeau, S. E. Craig, et al. 2010. "Air-Sea CO2 fluxes on the Scotian Shelf: seasonal to multi-annual variability." Biogeosciences 7(11): 3851-3867.
    We develop an algorithm to compute pCO(2) in the Scotian Shelf region (NW Atlantic) from satellite-based estimates of chlorophyll-a concentration, sea-surface temperature, and observed wind speed. This algorithm is based ...
  • Ammonium Distribution in Southern-California Coastal Waters and its Role in the Growth of Phytoplankton 

    EPPLEY, RW, EH RENGER, WG HARRISON, and JJ CULLEN. 1979. "Ammonium Distribution in Southern-California Coastal Waters and its Role in the Growth of Phytoplankton." Limnology and Oceanography 24(3): 495-509. DOI:10.4319/lo.1979.24.3.0495
    No abstract available.
  • Anisotropy in high-frequency broadband acoustic backscattering in the presence of turbulent microstructure and zooplankton 

    Leong, Doris, Tetjana Ross, and Andone Lavery. 2012. "Anisotropy in high-frequency broadband acoustic backscattering in the presence of turbulent microstructure and zooplankton." Journal of the Acoustical Society of America 132(2): 670-679. doi:10.1121/1.4730904 © 2012 Acoustical Society of America
    High-frequency broadband (120-600 kHz) acoustic backscattering measurements have been made in the vicinity of energetic internal waves. The transducers on the backscattering system could be adjusted so as to insonify the ...
  • Assessment of the processes controlling seasonal variations of dissolved inorganic carbon in the North Sea 

    Bozec, Yann, Helmuth Thomas, Laure-Sophie Schiettecatte, Alberto V. Borges, et al. 2006. "Assessment of the processes controlling seasonal variations of dissolved inorganic carbon in the North Sea." Limnology and Oceanography 51(6): 2746-2762.
    We used a seasonal North Sea data set comprising dissolved inorganic carbon (DIC), partial pressure of CO2 (pCO(2)), and inorganic nutrients to assess the abiotic and biological processes governing the monthly variations ...
  • Assessment of the relationships between dominant cell size in natural phytoplankton communities and the spectral shape of the absorption coefficient 

    Ciotti, Aurea M., Marlon R. Lewis, and John J. Cullen. 2002. "Assessment of the relationships between dominant cell size in natural phytoplankton communities and the spectral shape of the absorption coefficient." Limnology and Oceanography 47(2): 404-417. DOI:10.4319/lo.2002.47.2.0404
    Size-fractionated chlorophyll concentration and phytoplankton absorption spectra were compared for a wide variety of natural communities. We found that, in general, when phytoplankton abundance increases, larger size-classes ...
  • Assimilating long-term hydrographic information into an eddy-permitting model of the North Atlantic 

    Wright, D. G., K. R. Thompson, and Y. Lu. 2006. "Assimilating long-term hydrographic information into an eddy-permitting model of the North Atlantic." Journal of Geophysical Research 111(C9): 09022-C09022. DOI: 10.1029/2005JC003200
    No abstract available.
  • Biological processes and optical measurements near the sea surface: Some issues relevant to remote sensing 

    Cullen, J. J., and M. R. Lewis. 1995. "Biological processes and optical measurements near the sea surface: Some issues relevant to remote sensing." Journal of Geophysical Research.C.Oceans 100(C7): 13-13,266. DOI:10.1029/95JC00454
    There is good evidence that bio-optical relationships are altered near the surface: (1) the fluorescence yield from chlorophyll declines, leading to bias in the estimation of pigment from fluorometry; (2) the modeled ...
  • Biooptical Inferences from Chlorophyll-a Fluorescence - what Kind of Fluorescence is Measured in Flow-Cytometry 

    NEALE, PJ, JJ CULLEN, and CM YENTSCH. 1989. "Biooptical Inferences from Chlorophyll-a Fluorescence - what Kind of Fluorescence is Measured in Flow-Cytometry." Limnology and Oceanography 34(8): 1739-1748. DOI:10.4319/lo.1989.34.8.1739
    No abstract available.
  • Bioturbation and porosity gradients 

    Mulsow, S., BP Boudreau, and JN Smith. 1998. "Bioturbation and porosity gradients." Limnology and Oceanography 43(1): 1-9.
    Ubiquitous porosity gradients have a potentially important effect on the mixing of particle-bound tracers, such as Pb-210. Mass-depth coordinates cannot be used to deal with these effects if values of the traditional mixing ...
  • Bromoperoxidase and iodoperoxidase enzymes and production of halogenated methanes in marine diatom cultures 

    Moore, RM, M. Webb, R. Tokarczyk, and R. Wever. 1996. "Bromoperoxidase and iodoperoxidase enzymes and production of halogenated methanes in marine diatom cultures." Journal of Geophysical Research-Oceans 101(C9): 20899-20908. DOI:10.1029/96JC01248
    Halogenated methanes produced in the oceans are important as carriers of chlorine, bromine, and iodine into the atmosphere. There they play roles in the regulation of ozone in the stratosphere and perhaps in the Arctic ...
  • Calculation of UV attenuation and colored dissolved organic matter absorption spectra from measurements of ocean color 

    This article first appeared in: Johannessen, S. C., W. L. Miller, and J. J. Cullen. 2003. "Calculation of UV attenuation and colored dissolved organic matter absorption spectra from measurements of ocean color." Journal of Geophysical Research 108(C9): 13-13. DOI: 10.1029/2000JC000514
    No abstract available.
  • The carbon budget of the North Sea 

    Thomas, H., Y. Bozec, HJW de Baar, K. Elkalay, et al. 2005. "The carbon budget of the North Sea." Biogeosciences 2(1): 87-96.
    A carbon budget has been established for the North Sea, a shelf sea on the NW European continental shelf. The carbon exchange fluxes with the North Atlantic Ocean dominate the gross carbon budget. The net carbon budget ...
  • Carbon cycle research after Kyoto 

    Tans, PP, and DWR Wallace. 1999. "Carbon cycle research after Kyoto." Tellus Series B-Chemical and Physical Meteorology 51(2): 562-571.
    Recent progress in research of the global carbon cycle is reviewed and research needs for the immediate future are discussed, in light of the challenge posed to society to come to grips with the problem of man-made climate ...
  • Carbon cycling in the Arctic Archipelago: the export of Pacific carbon to the North Atlantic 

    Shadwick, E. H., T. Papakyriakou, AEF Prowe, D. Leong, et al. 2009. "Carbon cycling in the Arctic Archipelago: the export of Pacific carbon to the North Atlantic." Biogeosciences Discussions 6(1): 971-994.
    The Arctic Ocean is expected to be disproportionately sensitive to climatic changes, and is thought to be an area where such changes might be detected. The Arctic hydrological cycle is influenced by: runoff and precipitation, ...