Now showing items 759-778 of 988

    • 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 ...
    • Rapid growth and concerted sexual transitions by a bloom of the harmful dinoflagellate Alexandrium fundyense (Dinophyceae) 

      Brosnahan, Michael L.; Velo-Suarez, Lourdes; Ralston, David K.; Fox, Sophia E.; Sehein, Taylor R.; Shalapyonok, Alexi; Sosik, Heidi M.; Olson, Robert J.; Anderson, Donald M. (John Wiley & Sons, 2015-09-18)
      Transitions between life cycle stages by the harmful dinoflagellate Alexandrium fundyense are critical for the initiation and termination of its blooms. To quantify these transitions in a single population, an Imaging ...
    • 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 ...