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  • Calculated after Luo et al. (2012); Date/Time of event; DEPTH, water; Event label; Latitude of event; Longitude of event; MAREDAT_Diazotrophs_Collection; MR04-07_01; MR04-07_02; MR04-07_03; MR04-07_04; MR04-07_05; MR04-07_06; MR04-07_07; MR04-07_08; MR04-07_09; MR05-02_01; MR05-02_02; MR05-02_03; MR05-02_04; MR05-02_05; MR05-02_06; MR05-02_07; MR05-02_08; MR05-02_09; MR05-02_10; MR05-02_11; MR05-02_12; MR05-02_13; MR05-02_14; MR05-02_15; MR05-02_16; MR05-02_17; MR05-02_18; MR05-02_19; MR05-02_20; MR05-02_21; Nitrogen Fixation (C2H2 Reduction); Nitrogen fixation rate, total; Nitrogen fixation rate, whole seawater; North Atlantic; Unicellular cyanobacteria, nitrogen fixation rate  (1)
  • MAREMIP; MARine Ecosystem Model Intercomparison Project  (1)
  • Motility  (1)
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  • 1
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    Global distributions of diazotrophs abundance, biomass and nitrogen fixation rates - Gridded data product (NetCDF) - Contribution to the MAREDAT World Ocean Atlas of Plankton Functional Types (2012)
    PANGAEA
    In:  Supplement to: Luo, Yawei; Doney, Scott C; Anderson, L A; Benavides, Mar; Berman-Frank, I; Bode, Antonio; Bonnet, S; Boström, Kjärstin H; Böttjer, D; Capone, D G; Carpenter, E J; Chen, Yaw-Lin; Church, Matthew J; Dore, John E; Falcón, Luisa I; Fernández, A; Foster, R A; Furuya, Ken; Gomez, Fernando; Gundersen, Kjell; Hynes, Annette M; Karl, David Michael; Kitajima, Satoshi; Langlois, Rebecca; LaRoche, Julie; Letelier, Ricardo M; Marañón, Emilio; McGillicuddy Jr, Dennis J; Moisander, Pia H; Moore, C Mark; Mouriño-Carballido, Beatriz; Mulholland, Margaret R; Needoba, Joseph A; Orcutt, Karen M; Poulton, Alex J; Rahav, Eyal; Raimbault, Patrick; Rees, Andrew; Riemann, Lasse; Shiozaki, Takuhei; Subramaniam, Ajit; Tyrrell, Toby; Turk-Kubo, Kendra A; Varela, Manuel; Villareal, Tracy A; Webb, Eric A; White, Angelicque E; Wu, Jingfeng; Zehr, Jonathan P (2012): Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates. Earth System Science Data, 4, 47-73, https://doi.org/10.5194/essd-4-47-2012
    Details
    Publication Date: 2023-03-27
    Description: The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedented global data set for ecological and biochemical analysis and modeling as well as a clear mandate for compiling additional existing data and for focusing future data gathering efforts on key groups in key areas of the ocean. This is a gridded data product about diazotrophic organisms . There are 6 variables. Each variable is gridded on a dimension of 360 (longitude) * 180 (latitude) * 33 (depth) * 12 (month). The first group of 3 variables are: (1) number of biomass observations, (2) biomass, and (3) special nifH-gene-based biomass. The second group of 3 variables is same as the first group except that it only grids non-zero data. We have constructed a database on diazotrophic organisms in the global pelagic upper ocean by compiling more than 11,000 direct field measurements including 3 sub-databases: (1) nitrogen fixation rates, (2) cyanobacterial diazotroph abundances from cell counts and (3) cyanobacterial diazotroph abundances from qPCR assays targeting nifH genes. Biomass conversion factors are estimated based on cell sizes to convert abundance data to diazotrophic biomass. Data are assigned to 3 groups including Trichodesmium, unicellular diazotrophic cyanobacteria (group A, B and C when applicable) and heterocystous cyanobacteria (Richelia and Calothrix). Total nitrogen fixation rates and diazotrophic biomass are calculated by summing the values from all the groups. Some of nitrogen fixation rates are whole seawater measurements and are used as total nitrogen fixation rates. Both volumetric and depth-integrated values were reported. Depth-integrated values are also calculated for those vertical profiles with values at 3 or more depths.
    Keywords: MAREMIP; MARine Ecosystem Model Intercomparison Project
    Type: Dataset
    Format: application/zip, 1.7 MBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Nitrogen fixation rate of diazotrophs and their nitrogen fixation in the tropical and subtropical western North Pacific (2013)
    PANGAEA
    Details
    Publication Date: 2023-12-09
    Keywords: Calculated after Luo et al. (2012); Date/Time of event; DEPTH, water; Event label; Latitude of event; Longitude of event; MAREDAT_Diazotrophs_Collection; MR04-07_01; MR04-07_02; MR04-07_03; MR04-07_04; MR04-07_05; MR04-07_06; MR04-07_07; MR04-07_08; MR04-07_09; MR05-02_01; MR05-02_02; MR05-02_03; MR05-02_04; MR05-02_05; MR05-02_06; MR05-02_07; MR05-02_08; MR05-02_09; MR05-02_10; MR05-02_11; MR05-02_12; MR05-02_13; MR05-02_14; MR05-02_15; MR05-02_16; MR05-02_17; MR05-02_18; MR05-02_19; MR05-02_20; MR05-02_21; Nitrogen Fixation (C2H2 Reduction); Nitrogen fixation rate, total; Nitrogen fixation rate, whole seawater; North Atlantic; Unicellular cyanobacteria, nitrogen fixation rate
    Type: Dataset
    Format: text/tab-separated-values, 83 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
    Electronic Resource
    Electronic Resource
    High-speed video observation of swimming behavior and flagellar motility ofProrocentrum minimum (Dinophyceae) (1998)
    Springer
    Protoplasma 204 (1998), S. 38-46 
    Details
    ISSN: 1615-6102
    Keywords: Dinoflagellate ; Swimming ; Flagellum ; Motility ; Highspeed video-recording
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary To understand the functions of the longitudinal and transverse flagella of dinoflagellates, the flagellar waveform and frequency of each flagellum were observed by high-speed video-recording. The longitudinal flagellum emerged from the anterior end of the cell and beat with a planar undulating wave whose plane was perpendicular to the valval sutural plane. The transverse flagellum curved around the anterior end of the cell and beat with a helical wave, with different alternating half pitches. The half pitch corresponding to the parts farther from the cellular antero-posterior axis was shorter than that of the parts closer to the axis. This pattern is described by the ratio of the outer-parts half pitch to the pitch of the whole period of the helix and seems to be characteristic of the dinoflagellates' transverse flagellum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01282292
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    Paper (German National Licenses)
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