Now showing items 678-697 of 889

  • Quantifying parameters of bottlenose dolphin signature whistles 

    Esch, H. Carter; Sayigh, Laela S.; Wells, Randall S. (2009-01-06)
    Bottlenose dolphins (Tursiops truncatus) produce individually distinctive vocalizations called signature whistles, first described by Melba and David Caldwell (1965). The Caldwells observed that isolated, captive dolphins ...
  • A quantitative assessment of the role of the parasite Amoebophrya in the termination of Alexandrium fundyense blooms within a small coastal embayment 

    Velo-Suarez, Lourdes; Brosnahan, Michael L.; Anderson, Donald M.; McGillicuddy, Dennis J. (Public Library of Science, 2013-12-04)
    Parasitic dinoflagellates of the genus Amoebophrya infect free-living dinoflagellates, some of which can cause harmful algal blooms (HABs). High prevalence of Amoebophrya spp. has been linked to the decline of some HABs ...
  • Quantitative computed tomography of humpback whale (Megaptera novaeangliae) mandibles : mechanical implications for rorqual lunge-feeding 

    Field, Daniel J.; Campbell-Malone, Regina; Goldbogen, Jeremy A.; Shadwick, Robert E. (2010-01-25)
    Rorqual whales (Balaenopteridae) lunge at high speed with mouth open to nearly 90 degrees in order to engulf large volumes of prey-laden water. This feeding process is enabled by extremely large skulls and mandibles that ...
  • Questioning the rise of gelatinous zooplankton in the world's oceans 

    Condon, Robert H.; Graham, William M.; Duarte, Carlos M.; Pitt, Kylie A.; Lucas, Cathy H.; Haddock, Steven H. D.; Sutherland, Kelly R.; Robinson, Kelly L.; Dawson, Michael N.; Decker, Mary Beth; Mills, Claudia E.; Purcell, Jennifer E.; Malej, Alenka; Mianzan, Hermes; Uye, Shin-Ichi; Gelcich, Stefan; Madin, Laurence P. (American Institute of Biological Sciences, 2012-02)
    During the past several decades, high numbers of gelatinous Zooplankton species have been reported in many estuarine and coastal ecosystems. Coupled with media-driven public perception, a paradigm has evolved in which the ...
  • The quorum-sensing regulation of Vibrio fischeri : novel components of the autoinducer/LuxR regulatory circuit 

    Callahan, Sean M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-06)
    In the marine bacterium Vibrio fischeri two intercellular homoserine-Iactone signal molecules (luxI-dependent 30C6-HSL and the ainS-dependent C8-HSL) and the transcriptional activator LuxR regulate the luminescence system ...
  • Rain-induced turbulence and air-sea gas transfer 

    Zappa, Christopher J.; Ho, David T.; McGillis, Wade R.; Banner, Michael L.; Dacey, John W. H.; Bliven, Larry F.; Ma, Barry; Nystuen, Jeffrey A. (American Geophysical Union, 2009-07-09)
    Results from a rain and gas exchange experiment (Bio2 RainX III) at the Biosphere 2 Center demonstrate that turbulence controls the enhancement of the air-sea gas transfer rate (or velocity) k during rainfall, even though ...
  • Ranging patterns of bottlenose dolphins living in oceanic waters : implications for population structure 

    Silva, Monica A.; Prieto, Rui; Magalhaes, Sara; Seabra, Maria I.; Santos, Ricardo S.; Hammond, Philip S. (2008-10)
    Very little is known about the ecology of common bottlenose dolphins (Tursiops truncatus) living in oceanic waters. This study investigated the ranging and residence pattern, of bottlenose dolphins occurring in the Azores ...
  • RAPID : research on automated plankton identification 

    Benfield, Mark C.; Grosjean, Philippe; Culverhouse, Phil F.; Irigoien, Xabier; Sieracki, Michael E.; Lopez-Urrutia, Angel; Dam, Hans G.; Hu, Qiao; Davis, Cabell S.; Hansen, Allen; Pilskaln, Cynthia H.; Riseman, Edward M.; Schultz, Howard; Utgoff, Paul E.; Gorsky, Gabriel (Oceanography Society, 2007-06)
    When Victor Hensen deployed the first true plankton1 net in 1887, he and his colleagues were attempting to answer three fundamental questions: What planktonic organisms are present in the ocean? How many of each type ...
  • Rate zonal density gradient ultracentrifugation analysis of repair of radiation damage to the folded chromosome of Escherichia coli 

    Ulmer, Kevin M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1978-04)
    The structure of the membrane-free nucleoid of Escherichia coli and of unfolded chromosomal DNA was investigated by sedimentation on neutral sucrose gradients after irradiation with 60Co gamma-rays and ultraviolet light ...
  • Real-time reporting of baleen whale passive acoustic detections from ocean gliders 

    Baumgartner, Mark F.; Fratantoni, David M.; Hurst, Thomas P.; Brown, Moira W.; Cole, Timothy V. N.; Van Parijs, Sofie M.; Johnson, Mark P. (Acoustical Society of America, 2013-08)
    In the past decade, much progress has been made in real-time passive acoustic monitoring of marine mammal occurrence and distribution from autonomous platforms (e.g., gliders, floats, buoys), but current systems focus ...
  • Recent Arctic climate change and its remote forcing of Northwest Atlantic shelf ecosystems 

    Greene, Charles H.; Monger, Bruce C.; McGarry, Louise P.; Connelly, Matthew D.; Schnepf, Neesha R.; Pershing, Andrew J.; Belkin, Igor M.; Fratantoni, Paula S.; Mountain, David G.; Pickart, Robert S.; Ji, Rubao; Bisagni, James J.; Chen, Changsheng; Hakkinen, Sirpa M. A.; Haidvogel, Dale B.; Wang, Jia; Head, Erica; Smith, Peter; Conversi, Alessandra (The Oceanography Society, 2012-09)
    During recent decades, historically unprecedented changes have been observed in the Arctic as climate warming has increased precipitation, river discharge, and glacial as well as sea-ice melting. Additionally, shifts in ...
  • Recording and quantification of ultrasonic echolocation clicks from free-ranging toothed whales 

    Madsen, Peter T.; Wahlberg, Magnus (2006-10-08)
    Toothed whales produce short, ultrasonic clicks of high directionality and source level to probe their environment acoustically. This process, termed echolocation, is to a large part governed by the properties of the emitted ...
  • Recovery of temperature records from slow-growing corals by fine scale sampling of skeletons 

    Cohen, Anne L.; Thorrold, Simon R. (American Geophysical Union, 2007-09-12)
    We used laser ablation inductively coupled plasma mass spectrometry (LA ICP-MS) to analyze Sr/Ca ratios in 5 colonies of the Atlantic corals, Diploria labyrinthiformis and Montastrea franski, each growing less than 5 mm ...
  • Recruitment of the intertidal barnacle Semibalanus balanoides ; metamorphosis and survival from daily to seasonal timescales 

    Blythe, Jonathan N. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09)
    The benthic habitat is the terminal destination for marine animals in terms of their reproductive lifecycle. Recruitment dynamics relating to seasonal changes in the benthic habitat may be the best source of information ...
  • A red tide of Alexandrium fundyense in the Gulf of Maine 

    McGillicuddy, Dennis J.; Brosnahan, Michael L.; Couture, Darcie A.; He, Ruoying; Keafer, Bruce A.; Manning, James P.; Martin, Jennifer L.; Pilskaln, Cynthia H.; Townsend, David W.; Anderson, Donald M. (2013-04-15)
    In early July 2009, an unusually high concentration of the toxic dinoflagellate Alexandrium fundyense occurred in the western Gulf of Maine, causing surface waters to appear reddish brown to the human eye. The discolored ...
  • Reduced cytochrome P4501A activity and recovery from oxidative stress during subchronic benzo[a]pyrene and benzo[e]pyrene treatment of rainbow trout 

    Curtis, Lawrence R.; Garzon, Claudia B.; Arkoosh, Mary; Collier, Tracy K.; Myers, Mark S.; Buzitis, Jon; Hahn, Mark E. (2011-04-08)
    This study assessed the role of aryl hydrocarbon receptor (AHR) affinity, and cytochrome P4501A (CYP1A) protein and activity in polyaromatic hydrocarbon (PAH)-­‐induced oxidative stress. In the ...
  • Reef-fidelity and migration of tiger sharks, Galeocerdo cuvier, across the Coral Sea 

    Werry, Jonathan M.; Planes, Serge; Berumen, Michael L.; Lee, Kate A.; Braun, Camrin D.; Clua, Eric (Public Library of Science, 2014-01-08)
    Knowledge of the habitat use and migration patterns of large sharks is important for assessing the effectiveness of large predator Marine Protected Areas (MPAs), vulnerability to fisheries and environmental influences, and ...
  • Reexamination of the species assignment of Diacavolinia pteropods using DNA barcoding 

    Maas, Amy E.; Blanco-Bercial, Leocadio; Lawson, Gareth L. (Public Library of Science, 2013-01-15)
    Thecosome pteropods (Mollusca, Gastropoda) are an ecologically important, diverse, and ubiquitous group of holoplanktonic animals that are the focus of intense research interest due to their external aragonite shell and ...
  • Reference database marine mammal literature 

    Watkins, William A.; Bird, James E.; Moore, Karen E.; Tyack, Peter L. (Woods Hole Oceanographic Institution, 1988-01)
    A comprehensive Reference Database has been designed for the marine mammal literature. The system uses INMAGIC programming (Cambridge, MA) to file, store, search, retrieve, and format the data records. The database was ...
  • Regulation of constitutive and inducible AHR signaling : complex interactions involving the AHR repressorstar 

    Hahn, Mark E.; Allan, Lenka L.; Sherr, David H. (2008-10-09)
    The AHR is well known for regulating responses to an array of environmental chemicals. A growing body of evidence supports the hypothesis that the AHR also plays perhaps an even more important role in modulating critical ...