Search results for "diazotrophs"

showing 4 items of 4 documents

Global distributions of diazotrophs abundance and biomass - Depth integrated values computed from a collection of source datasets - Contribution to t…

2013

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 unprecedente…

Go-Flo bottlesSalinityCAIBEX-IRV Kilo MoanaDiazotrophs total biomass as carbonUniform resource locator link to source data fileNitrateRichelia carbon per cellCTD/RosetteLatitude of eventNiskinRoger A RevelleTemperature waterCalculatedtop minbiomass as carbonTrichodesmium biomass as carbontotalbottom maxCTD Seabirdareal concentrationMultiple investigationsTemperatureDepth top/minRichelia abundance cellsCTD RosetteSeabirdCalothrixRoger A. RevelleTrichodesmiumTrichodesmium carbon per trichomeEarth System ResearchRichelia abundanceCAIBEX-IICalothrix abundanceMARine Ecosystem Model Intercomparison Project MAREMIPDiazotrophsLongitude of eventRichelia associated speciesSample methodIronChlorophyll total areal concentrationBottle NiskinwaterTrichodesmium abundance free trichomesMARine Ecosystem Model Intercomparison Project (MAREMIP)PhosphateSarmiento de GamboaSample commentCAIBOXUniform resource locator/link to source data filetotal biomass as carbonCalothrix carbon per cellHeterocyst biomassGo Flo bottlescoloniesDate/Time of eventChlorophyll totalTrichodesmium abundance totalRicheliaDEPTH waterTrichodesmium abundance coloniesMP-6biomassBottleDepthEvent labelDate Time of eventCAIBEX IIcarbon per cellMeasured at sea surfacefree trichomesMP-9CTDCalothrix abundance cellscarbon per trichomeTrichodesmium abundanceCalothrix associated speciesMP 9MP 6CAIBEX IcellsDepth bottom/maxassociated speciesHeterocyst
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Global distributions of diazotrophs Gamma-A nifH genes abundance - Depth integrated values computed from a collection of source datasets - Contributi…

2013

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 unprecedente…

M60/5SalinityChlorophyll aDiazotrophs total biomass as carbonUniform resource locator link to source data fileNitrateCTD/RosetteLatitude of eventNiskinM55 1Temperature waterCalothrix abundance expressed in number of nifH gene copiesratio expressed in mass of carbon per amount of nifH gene copiesCalculatedtop minUnicellular cyanobacteria-B biological trait ratio expressed in mass of carbon per amount of nifH gene copiesCD132biomass as carbonTrichodesmium biomass as carbonM55/1bottom maxCTD SeabirdTemperatureDepth top/minCTD RosetteSeabirdRichelia biological trait ratio expressed in mass of carbon per amount of nifH gene copiesCalothrixSO187 2Unicellular cyanobacteria-B abundance expressed in number of nifH gene copiesTrichodesmiumEarth System ResearchMARine Ecosystem Model Intercomparison Project MAREMIPDiazotrophsLongitude of eventRichelia associated speciesSample methodCalothrix biological trait ratio expressed in mass of carbon per amount of nifH gene copiesIronBottle NiskinwaterIn situ pumpMARine Ecosystem Model Intercomparison Project (MAREMIP)Unicellular cyanobacteria-C abundance expressed in number of nifH gene copiesPhosphateWater sampleSample commentUnicellular cyanobacteria biomassUniform resource locator/link to source data filetotal biomass as carbonHeterocyst biomassUnicellular cyanobacteriaProteobacteriaDate/Time of eventMeteor 1986Richelia abundance expressed in number of nifH gene copiesUnicellular cyanobacteria CUnicellular cyanobacteria Bbiological traitSO187/2RicheliaUnicellular cyanobacteria ADEPTH waterbiomassTrichodesmium abundance expressed in number of nifH gene copiesMeteor (1986)BottleDepthEvent labelDate Time of eventTrichodesmium biological trait ratio expressed in mass of carbon per amount of nifH gene copiesUnicellular cyanobacteria-C biological trait ratio expressed in mass of carbon per amount of nifH gene copiesMeasured at sea surfaceCTDCalothrix associated speciesCharles DarwinSonneabundance expressed in number of nifH gene copiesM60 5Depth bottom/maxUnicellular cyanobacteria-A abundance expressed in number of nifH gene copiesassociated speciesProteobacteria abundance expressed in number of nifH gene copiesHeterocyst
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Spatial segregation of the biological soil crust microbiome around its foundational cyanobacterium, Microcoleus vaginatus, and the formation of a nit…

2019

12 pages; International audience; Background Biological soil crusts (biocrusts) are a key component of arid land ecosystems, where they render critical services such as soil surface stabilization and nutrient fertilization. The bundle-forming, filamentous, non-nitrogen-fixing cyanobacterium Microcoleus vaginatus is a pioneer primary producer, often the dominant member of the biocrust microbiome, and the main source of leaked organic carbon. We hypothesized that, by analogy to the rhizosphere of plant roots, M. vaginatus may shape the microbial populations of heterotrophs around it, forming a specialized cyanosphere. Results By physically isolating bundles of M. vaginatus from biocrusts, we …

Microbiology (medical)DiazotrophsBulk soilBiology[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil studyCyanobacteriaMicrobiologyMESH: Nitrogen FixationDNA Ribosomallcsh:Microbial ecology03 medical and health sciencesCyanosphereMicrobial ecologyNitrogen FixationRNA Ribosomal 16SBiocrustEcosystemMESH: PhylogenySymbiosisPhylogenySoil Microbiology030304 developmental biology2. Zero hunger0303 health sciencesRhizospherePioneer speciesMESH: DNA RibosomalMESH: Symbiosis030306 microbiologyEcologyResearchBiological soil crustMESH: Cyanobacteria15. Life on landMicrocoleus vaginatusMESH: RNA Ribosomal 16S[SDV.MP]Life Sciences [q-bio]/Microbiology and ParasitologyMESH: Soil MicrobiologyNitrogen fixationlcsh:QR100-130DiazotrophDesert ClimateMESH: Desert ClimateMicrobiome
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The spatial and temporal variation of nitrogen fixation in aquatic environments

2007

typpistabiili-isotooppimenetelmänitrogen fixationstable isotopeacetylene reductiondiazotrophslakenitrogenasejärvet
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