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Showing 1 to 20 of 21 for “"Trichodesmium"”.

  1. Phosphorus physiology of the marine cyanobacterium Trichodesmium

    Orchard, Elizabeth DuncanMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2010

    … global cycling of carbon. The marine diazotroph Trichodesmium is a major contributor to both primary production and nitrogen fixation in the tropical and subtropical oceans. These regions are often characterized by low phosphorus (P) concentrations, and P deficiency of Trichodesmium could limit …

    woods-hole Repository record

  2. Phosphorus physiology of the marine cyanobacterium Trichodesmium

    Orchard, Elizabeth DuncanMassachusetts Institute of Technology2010

    … global cycling of carbon. The marine diazotroph Trichodesmium is a major contributor to both primary production and nitrogen fixation in the tropical and subtropical oceans. These regions are often characterized by low phosphorus (P) concentrations, and P deficiency of Trichodesmium could limit …

    mit Repository record

  3. The relationship between iron and nitrogen fixation in Trichodesmium spp.

    Chappell, Phoebe DreuxMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2009

    Trichodesmium spp. are considered the dominant nitrogen (N) fixing cyanobacteria in tropical and subtropical oceans, regimes frequently characterized by low iron (Fe). Limited information exists about what levels of Fe limit Trichodesmium N fixation. I developed a diagnostic for Fe limitation using …

    woods-hole Repository record

  4. The relationship between iron and nitrogen fixation in Trichodesmium spp.

    Chappell, Phoebe DreuxMassachusetts Institute of Technology2009

    Trichodesmium spp. are considered the dominant nitrogen (N) fixing cyanobacteria in tropical and subtropical oceans, regimes frequently characterized by low iron (Fe). Limited information exists about what levels of Fe limit Trichodesmium N fixation. I developed a diagnostic for Fe limitation using …

    mit Repository record

  5. Multiscale, multiparadigm metabolic modeling of the keystone diazotrophic cyanobacterium, Trichodesmium erythraeum

    Gardner, Joseph JayColorado School of Mines. Arthur Lakes Library2019

    … a crucial diazotrophic cyanobacterium, Trichodesmium erythraeum. It uses genome-scale modeling approaches to characterize a unique metabolism at the center of the carbon, nitrogen, and phosphorus biogeochemical cycles. It ties these models to experimentation, both personally conducted …

    colo-mines Repository record

  6. Diversity of the marine cyanobacterium Trichodesmium : characterization of the Woods Hole culture collection and quantification of field populations

    Hynes, Annette MichelleMassachusetts Institute of Technology2009

    Trichodesmium is a colonial, N2-fixing cyanobacterium found in tropical oceans. Species of Trichodesmium are genetically similar but several species exist together in the same waters. In order to coexist, Trichodesmium spp. may occupy different niche spaces through differential utilization of …

    mit Repository record

  7. Diversity of the marine cyanobacterium Trichodesmium : characterization of the Woods Hole culture collection and quantification of field populations

    Hynes, Annette MichelleMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2009

    Trichodesmium is a colonial, N2-fixing cyanobacterium found in tropical oceans. Species of Trichodesmium are genetically similar but several species exist together in the same waters. In order to coexist, Trichodesmium spp. may occupy different niche spaces through differential utilization of …

    woods-hole Repository record

  8. Microbial interactions associated with biofilms attached to Trichodesmium spp. and detrital particles in the ocean

    Hmelo, Laura R.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2010

    … communities inhabiting biofilms attached to Trichodesmium spp. and detrital (photosynthetically-derived sinking particulate organic carbon, POC) particles. These hot spots of microbial activity are primary sites of interaction between marine primary producers and heterotrophs and crucial …

    woods-hole Repository record

  9. Protein regulation in Trichodesmium and other marine bacteria: observational and interpretive biomarkers of biogeochemical processes

    Held, Noelle A.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2020

    … I focus on the prevalent marine nitrogen fixer Trichodesmium, whose activity affects global nitrogen, carbon, phosphorus, and trace metal cycles. A metaproteomic survey of Trichodesmium populations identified simultaneous iron and phosphate co-stress throughout the tropical and subtropical …

    woods-hole Repository record

  10. Investigating the role of trichodesmium spp. in the oceanic nitrogen cycle through observations and models

    Olson, Elise M. B.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2014

    The nitrogen fixation and abundance of Trichodesmium colonies and their connections with physical processes were investigated through Video Plankton Recorder (VPR) and other observations collected in fall 2010 and spring 2011 in the western subtropical–tropical North Atlantic. A data processing …

    woods-hole Repository record

  11. <i>Trichodesmium</i> spp.: Numerical Studies of Resource Competition, Carbohydrate Ballasting, and Remote-Sensing Reflectance

    Clayton, Tonya Denise2019

    … ecological processes associated with <em>Trichodesmium </em>spp., the most conspicuous marine diazotroph: (1) characterization of a generalized model <em>Trichodesmium</em> and issues of macronutrient resource competition; (2) carbohydrate ballasting by <em>Trchodesmium </em>and …

    odu Repository record

  12. Microbial interactions associated with biofilms attached to Trichodesmium spp. and detrital particles in the ocean

    Hmelo, Laura RobinMassachusetts Institute of Technology2010

    … communities inhabiting biofilms attached to Trichodesmium spp. and detrital (photosynthetically-derived sinking particulate organic carbon, POC) particles. These hot spots of microbial activity are primary sites of interaction between marine primary producers and heterotrophs and crucial …

    mit Repository record

  13. Investigating the role of Trichodesmium spp. in the oceanic nitrogen cycle through observations and models

    Olson, Elise Marie BlackMassachusetts Institute of Technology2014

    … concerns the nitrogen fixation and abundance of Trichodesmium colonies in the western subtropical-tropical North Atlantic and their connections with physical processes. Data were collected in fall 2010 and spring 2011, primarily using the Video Plankton Recorder (VPR). A data processing procedure …

    mit Repository record

  14. N2 fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean

    Heithoff, AbigailMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2011

    Trichodesmium, a genus of diazotrophic cyanobacteria, is an important contributor to the marine nitrogen (N) and carbon (C) cycles. The extent to which Trichodesmium dinitrogen (N2) fixation contributes to the marine N cycle has been modeled based on abundance data and rate estimates from surface …

    woods-hole Repository record

  15. N₂ fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean

    Heithoff, AbigailMassachusetts Institute of Technology2011

    Trichodesmium, a genus of diazotrophic cyanobacteria, is an important contributor to the marine nitrogen (N) and carbon (C) cycles. The extent to which Trichodesmium dinitrogen (N2) fixation contributes to the marine N cycle has been modeled based on abundance data and rate estimates from surface …

    mit Repository record

  16. The marine biogeochemistry of molybdenum

    Tuit, Caroline Beth, 1973-Massachusetts Institute of Technology2003

    … work on two N2 fixing marine cyanobacteria, Trichodesmium and Crocosphaera, and a marine facultative denitrifier, Marinobacter hydrocarbanoclasticus, showed that Mo cell quotas in these organisms were positively correlated with Mo-containing enzyme activity. Mo concentrations in Crocosphaera …

    mit Repository record

  17. The marine biogeochemistry of molybdenum

    Tuit, Caroline BethMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2003

    … work on two Nz fixing marine cyanobacteria, Trichodesmium and Crocosphaera, and a marine facultative denitrifier, Marinobacter hydrocarbanoclasticus, showed that Mo cell quotas in these organisms were positively correlated with Mo-containing enzyme activity. Mo concentrations in Crocosphaera …

    woods-hole Repository record

  18. Exploring the Spatial Distribution of Marine Nitrogen Fixation Through Statistical Modeling, High-Resolution Observations and Molecular Level Characterization

    Tang, Weiyi2019

    … I captured a shift between diazotrophs from Trichodesmium to UCYN-A from oligotrophic warm (25-29°C) subtropical Sargasso Sea to the relatively nutrient-enriched cold (13-24°C) eastern American coastal waters. Meanwhile, N2 fixation rates were significantly enhanced when phosphorus and Fe …

    duke Repository record

  19. Factors controlling bacterial abundance, biomass and growth at the Bermuda Atlantic time-series site

    Gundersen, K.University of Southampton1998

    … 42 % of the primary production rate, while Trichodesmium colonies only excreted 12 % (puffs) and 23 % (tufts). By using a conservative estimate of the bacterial growth efficiency (14 %) and the net DOC accumulation rate from this study, gross DOC excretion was equivalent to the rate of …

    soton Repository record

  20. FLORIDA RED TIDES FROM A SCIENTIFIC AND PUBLIC INFORMATION PERSPECTIVE

    Kusek, Kristen M.Digital Commons @ University of South Florida1998

    … and temporally associated bloom species such as Trichodesmium was suggested in the 1950s but remains unconfirmed. Another fundamental question is the definition of a "bloom"; there is a need to agree on what constitutes a bloom so the dynamics of blooms at large can be better understood. Long- …

    usf Repository record

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