Now showing items 3-22 of 889

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

    van der Hoop, Julie M.; Vanderlaan, Angelia S. M.; Taggart, Christopher T. (Ecological Society of America, 2012-10)
    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 ...
  • Abundance and diversity of ascidians in the southern Gulf of Chiriquí, Pacific Panama 

    Bullard, Stephan G.; Carman, Mary R.; Rocha, Rosana M.; Dijkstra, Jennifer A.; Goodwin, Anne M. (Regional Euro-Asian Biological Invasions Centre (REABIC), 2011-07-04)
    Little is known about the ascidian fauna of Pacific Panama. Ascidian surveys were conducted in the southern Gulf of Chiriquí on the Pacific coast of Panama in January 2008 and 2009. Surveys along linear transects at 2-3 m ...
  • Accelerator mass spectrometry 14C determination in CO2 produced from laser decomposition of aragonite 

    Rosenheim, Brad E.; Thorrold, Simon R.; Roberts, Mark L. (2008-08-29)
    Determination of 14C in aragonite (CaCO3) decomposed thermally to CO2 using an yttrium‐aluminum‐garnet doped neodymium laser is reported. Laser decomposition accelerator mass spectrometer (LD‐AMS) measurements reproduce ...
  • Accounting for biological and physical sources of acoustic backscatter improves estimates of zooplankton biomass 

    Warren, Joseph D.; Wiebe, Peter H. (2007-09-26)
    In order to convert measurements of backscattered acoustic energy to estimates of abundance and taxonomic information about the zooplankton community, all of the scattering processes in the water column need to be identified ...
  • Accurate automatic quantification of taxa-specific plankton abundance using dual classification with correction 

    Hu, Qiao; Davis, Cabell S. (Inter-Research, 2006-01-11)
    Optical imaging samplers are becoming widely used in plankton ecology, but image analysis methods have lagged behind image acquisition rates. Automated methods for analysis and recognition of plankton images have been ...
  • Acoustic classification of zooplankton 

    Martin Traykovski, Linda V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-02)
    Work on the forward problem in zooplankton bioacoustics has resulted in the identification of three categories of acoustic scatterers: elastic-shelled (e.g. pteropods), fluid-like (e.g. euphausiids), and gas-bearing (e.g. ...
  • Acoustic communication in the North Atlantic right whale (Eubalaena glacialis) 

    Parks, Susan E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-09)
    The focus of this thesis is the use of sound for communication by the North Atlantic right whale (Eubalaena glacialis). The surface active group (SAG) is the predominant social interaction in this species for which use ...
  • Acoustic playback experiments to study behavioral responses of free-ranging marine animals to anthropogenic sound 

    Tyack, Peter L. (Inter-Research, 2009-12-03)
    Growing concern about the effects of anthropogenic sound on marine life has highlighted the need for empirical methods to study behavioral responses of marine animals to specific acoustic exposures. Some effects have been ...
  • Acoustic scattering by benthic and planktonic shelled animals 

    Stanton, Timothy K.; Chu, Dezhang; Wiebe, Peter H.; Eastwood, Robert L.; Warren, Joseph D. (Acoustical Society of America, 2000-08)
    Acoustic backscattering measurements and associated scattering modeling were recently conducted on a type of benthic shelled animal that has a spiral form of shell (Littorina littorea). Benthic and planktonic shelled animals ...
  • Acquired phototrophy in aquatic protists 

    Stoecker, Diane K.; Johnson, Matthew D.; de Vargas, Colomban; Not, Fabrice (Inter-Research, 2009-11-24)
    Acquisition of phototrophy is widely distributed in the eukaryotic tree of life and can involve algal endosymbiosis or plastid retention from green or red origins. Species with acquired phototrophy are important components ...
  • The acquisition of phototrophy : adaptive strategies of hosting endosymbionts and organelles 

    Johnson, Matthew D. (2010-04)
    Many non-photosynthetic species of protists and metazoans are capable of hosting viable algal endosymbionts or their organelles through adaptations of phagocytic pathways. A form of mixotrophy, acquired phototrophy (AcPh) ...
  • Actin polymerization controls the activation of multidrug efflux at fertilization by translocation and fine-scale positioning of ABCB1 on microvilli 

    Whalen, Kristen E.; Reitzel, Adam M.; Hamdoun, Amro (American Society for Cell Biology, 2012-08-01)
    Fertilization changes the structure and function of the cell surface. In sea urchins, these changes include polymerization of cortical actin and a coincident, switch-like increase in the activity of the multidrug efflux ...
  • Active positioning of vent larvae at a mid-ocean ridge 

    Mullineaux, Lauren S.; McGillicuddy, Dennis J.; Mills, Susan W.; Kosnyrev, V. K.; Thurnherr, Andreas M.; Ledwell, James R.; Lavelle, J. William (2013-03)
    The vertical position of larvae of vent species above a mid-ocean ridge potentially has a strong effect on their dispersal. Larvae may be advected upward in the buoyant vent plume, or move as a consequence of their buoyancy ...
  • Adult demography and larval processes in coastal benthic populations intertidal barnacles in Southern California and Baja California 

    Tapia, Fabian J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-09)
    The geographic distribution and dynamics of coastal benthic populations are shaped by physical biological interactions affecting larval dispersal and the demography of juvenile and adult individuals. This thesis focused ...
  • Adverse effects of ocean acidification on early development of squid (Doryteuthis pealeii) 

    Kaplan, Maxwell B.; Mooney, T. Aran; McCorkle, Daniel C.; Cohen, Anne L. (Public Library of Science, 2013-05-31)
    Anthropogenic carbon dioxide (CO2) is being absorbed into the ocean, altering seawater chemistry, with potentially negative impacts on a wide range of marine organisms. The early life stages of invertebrates with internal ...
  • The African coelacanth genome provides insights into tetrapod evolution 

    Amemiya, Chris T.; Alfoldi, Jessica; Lee, Alison P.; Fan, Shaohua; Philippe, Herve; MacCallum, Iain; Braasch, Ingo; Manousaki, Tereza; Schneider, Igor; Rohner, Nicolas; Organ, Chris; Chalopin, Domitille; Smith, Jeramiah J.; Robinson, Mark; Dorrington, Rosemary A.; Gerdol, Marco; Aken, Bronwen; Assunta Biscotti, Maria; Barucca, Marco; Baurain, Denis; Berlin, Aaron M.; Blatch, Gregory L.; Buonocore, Francesco; Burmester, Thorsten; Campbell, Michael S.; Canapa, Adriana; Cannon, John P.; Christoffels, Alan; De Moro, Gianluca; Edkins, Adrienne L.; Fan, Lin; Fausto, Anna Maria; Feiner, Nathalie; Forconi, Mariko; Gamieldien, Junaid; Gnerre, Sante; Gnirke, Andreas; Goldstone, Jared V.; Haerty, Wilfried; Hahn, Mark E.; Hesse, Uljana; Hoffmann, Steve; Johnson, Jeremy; Karchner, Sibel I.; Kuraku, Shigehiro; Lara, Marcia; Levin, Joshua Z.; Litman, Gary W.; Mauceli, Evan; Miyake, Tsutomu; Mueller, M. Gail; Nelson, David R.; Nitsche, Anne; Olmo, Ettore; Ota, Tatsuya; Pallavicini, Alberto; Panji, Sumir; Picone, Barbara; Ponting, Chris P.; Prohaska, Sonja J.; Przybylski, Dariusz; Ratan Saha, Nil; Ravi, Vydianathan; Ribeiro, Filipe J.; Sauka-Spengler, Tatjana; Scapigliati, Giuseppe; Searle, Stephen M. J.; Sharpe, Ted; Simakov, Oleg; Stadler, Peter F.; Stegeman, John J.; Sumiyama, Kenta; Tabbaa, Diana; Tafer, Hakim; Turner-Maier, Jason; van Heusden, Peter; White, Simon; Williams, Louise; Yandell, Mark; Brinkmann, Henner; Volff, Jean-Nicolas; Tabin, Clifford J.; Shubin, Neil; Schartl, Manfred; Jaffe, David B.; Postlethwait, John H.; Venkatesh, Byrappa; Di Palma, Federica; Lander, Eric S.; Meyer, Axel; Lindblad-Toh, Kerstin (Nature Publishing Group, 2013-04-17)
    The discovery of a living coelacanth specimen in 1938 was remarkable, as this lineage of lobe-finned fish was thought to have become extinct 70 million years ago. The modern coelacanth looks remarkably similar to many of ...
  • After continents divide : comparative phylogeography of reef fishes from the Red Sea and Indian Ocean 

    DiBattista, Joseph D.; Berumen, Michael L.; Gaither, Michelle R.; Rocha, Luiz A.; Eble, Jeff A.; Choat, J. Howard; Craig, Matthew T.; Skillings, Derek J.; Bowen, Brian W. (2011-10)
    The Red Sea is a biodiversity hotspot characterized by unique marine fauna and high endemism. This sea began forming approximately 24 million years ago with the separation of the African and Arabian plates, and has been ...
  • Age, movements, and feeding ecology of northwest Atlantic white sharks estimated from ecogeochemical profiles in vertebrae 

    Hamady, Li Ling (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2014-02)
    White sharks (Carcharodon carcharias) are highly migratory, ecologically important, vulnerable, and understudied marine predators. Ecogeochemistry, which takes advantage of natural variations in chemical signatures ...
  • Age, stage and senescence in plants 

    Caswell, Hal; Salguero-Gomez, Roberto (John Wiley & Sons, 2013-04-24)
    Senescence (an increase in the mortality rate or force of mortality, or a decrease in fertility, with increasing age) is a widespread phenomenon. Theories about the evolution of senescence have long focused on the age ...
  • The aggregation of clay minerals and marine microalgal cells : physicochemical theory and implications for controlling harmful algal blooms 

    Sengco, Mario R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-09)
    In recent years, the use of clay minerals has emerged as one of the most promising strategies for directly controlling harmful algal blooms (HABs). Its principle is based on the mutual aggregation of algal cells and ...