{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360021391878692352.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/lol2.10343"}},{"identifier":{"@type":"URI","@value":"https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10343"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Diazotrophy in the Indian Ocean: Current understanding and future perspectives"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Dinitrogen (N<jats:sub>2</jats:sub>) fixation provides the major source of reactive nitrogen in the open ocean, sustaining biological productivity. The Indian Ocean (IO) covers 22% of the ocean surface, while it only represents 1% of the global diazotroph database. Hence, constraining the sources of nitrogen in the IO is crucial. Here, we compile three decades of N<jats:sub>2</jats:sub> fixation and diazotroph DNA data in the IO. Our analysis reveals basin‐scale yearly rates between ~ 7 and 13 Tg N yr<jats:sup>−1</jats:sup>. These rates are in the range of previous modeling‐based estimates but may represent a lower bound estimate due to the lack of data in this basin. Diazotroph variability among sub‐basins may suggest endemicity but needs to be taken with caution due to biased sampling toward certain seasons and uneven spatial coverage. We provide recommendations for a more accurate representation of the IO in the global nitrogen budget and our knowledge of diazotroph biogeography.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380021391878692360","@type":"Researcher","foaf:name":[{"@value":"Subhadeep Chowdhury"}],"jpcoar:affiliationName":[{"@value":"Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110  Marseille France"},{"@value":"Turing Center for Living Systems Aix‐Marseille University  Marseille France"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692356","@type":"Researcher","foaf:name":[{"@value":"Eric Raes"}],"jpcoar:affiliationName":[{"@value":"Flourishing Oceans, Minderoo Foundation  Nedlands Western Australia Australia"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692362","@type":"Researcher","foaf:name":[{"@value":"Cora Hörstmann"}],"jpcoar:affiliationName":[{"@value":"Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110  Marseille France"},{"@value":"Turing Center for Living Systems Aix‐Marseille University  Marseille France"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692224","@type":"Researcher","foaf:name":[{"@value":"Ayaz Ahmed"}],"jpcoar:affiliationName":[{"@value":"Kuwait Institute for Scientific Research  Salmiya Kuwait"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692357","@type":"Researcher","foaf:name":[{"@value":"Céline Ridame"}],"jpcoar:affiliationName":[{"@value":"Laboratoire LOCEAN/IPSL Sorbonne Université‐CNRS‐IRD‐MNHN  Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692359","@type":"Researcher","foaf:name":[{"@value":"Nicolas Metzl"}],"jpcoar:affiliationName":[{"@value":"Laboratoire LOCEAN/IPSL Sorbonne Université‐CNRS‐IRD‐MNHN  Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692480","@type":"Researcher","foaf:name":[{"@value":"P S Bhavya"}],"jpcoar:affiliationName":[{"@value":"Department of Biological Oceanography Leibniz Institute for Baltic Sea Research, Warnemuende  Rostock Germany"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692353","@type":"Researcher","foaf:name":[{"@value":"Takuya Sato"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Agricultural and Life Sciences The University of Tokyo  Bunkyo‐ku Tokyo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692363","@type":"Researcher","foaf:name":[{"@value":"Takuhei Shiozaki"}],"jpcoar:affiliationName":[{"@value":"Atmosphere and Ocean Research Institute The University of Tokyo  Chiba Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692225","@type":"Researcher","foaf:name":[{"@value":"Sophie Bonnet"}],"jpcoar:affiliationName":[{"@value":"Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110  Marseille France"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692352","@type":"Researcher","foaf:name":[{"@value":"Carolin R. Löscher"}],"jpcoar:affiliationName":[{"@value":"Nordcee, Department of Biology University of Southern Denmark  Odense Denmark"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692361","@type":"Researcher","foaf:name":[{"@value":"Arvind Singh"}],"jpcoar:affiliationName":[{"@value":"Physical Research Laboratory  Ahmedabad India"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021391878692355","@type":"Researcher","foaf:name":[{"@value":"Mar Benavides"}],"jpcoar:affiliationName":[{"@value":"Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO UM 110  Marseille France"},{"@value":"Turing Center for Living Systems Aix‐Marseille University  Marseille France"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"23782242"},{"@type":"EISSN","@value":"23782242"}],"prism:publicationName":[{"@value":"Limnology and Oceanography Letters"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"2023-09","prism:volume":"8","prism:number":"5","prism:startingPage":"707","prism:endingPage":"722"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10343"}],"createdAt":"2023-09-02","modifiedAt":"2023-11-13","project":[{"@id":"https://cir.nii.ac.jp/crid/1040577431243067520","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23KJ1168"},{"@type":"JGN","@value":"JP23KJ1168"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23KJ1168/"}],"notation":[{"@language":"ja","@value":"死滅から紐解く窒素固定生物の分布と生態学的役割：ウイルス感染死に着目して"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004229801605248","@type":"Article","resourceType":"学術雑誌論文(journal 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Monsoon"}]},{"@id":"https://cir.nii.ac.jp/crid/1360302868756651776","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Can Top-Down Controls Expand the Ecological Niche of Marine N2 Fixers?"}]},{"@id":"https://cir.nii.ac.jp/crid/1360564063937575168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Strong Intensification of the Arabian Sea Oxygen Minimum Zone in Response to Arabian Gulf Warming"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565166808462208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Diverse stoichiometry of dissolved trace metals in the Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567189394879232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nitrogenase (nifH) gene expression in diazotrophic cyanobacteria in the Tropical North Atlantic in response to nutrient amendments"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574092888374016","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Progress in understanding of Indian Ocean circulation, variability, air–sea exchange, and impacts on biogeochemistry"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574093603202816","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Transcriptionally active heterotrophic diazotrophs are widespread in the upper water column of the Arabian Sea"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094249697920","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Phytoplankton and light limitation in the Southern Ocean: Learning from high‐nutrient, high‐chlorophyll areas"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094794780416","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Marine ammonia-oxidizing archaeal isolates display obligate 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their cyanobacterial counterparts in metagenomes covering most of the sunlit ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346304840448","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Phytoplanktonic response to simulated volcanic and desert dust deposition events in the South Indian and Southern Oceans"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346305460736","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Trichodesmium blooms and warm-core ocean surface features in the Arabian Sea and the Bay of Bengal"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346305675648","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"High numbers of <i>Trichodesmium</i> and diazotrophic diatoms in the southwest Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346305679360","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Galathea Expedition"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346305685632","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Sinking <i>Trichodesmium</i> fixes nitrogen in the dark ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346305713408","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A sea-level monopole in the equatorial Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346306412928","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrographic fronts shape productivity, nitrogen fixation, and microbial community composition in the southern Indian Ocean and the Southern Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346306414208","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Controlling factors on the global distribution of a representative marine non-cyanobacterial diazotroph phylotype (Gamma A)"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346484828288","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Biogeochemistry of iron in the <scp>A</scp>rabian <scp>S</scp>ea"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346484829952","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Toward resolving disparate accounts of the extent and magnitude of nitrogen fixation in the Eastern Tropical South Pacific oxygen deficient zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346485599232","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The <i>Challenger</i> Expedition and Australian Science"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346485738752","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Biological nitrogen fixation in the oxygen-minimum region of the eastern tropical North Pacific ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346486169088","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Indian Ocean Experiment: Introduction"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346486433152","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Integrating Stochastic and Deterministic Process in the Biogeography of N2-Fixing Cyanobacterium Candidatus Atelocyanobacterium Thalassa"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584346486533888","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nutrient distribution and nitrogen and oxygen isotopic composition of nitrate in water masses of the subtropical southern Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855568881358208","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"An oceanic fixed nitrogen sink exceeding 400 Tg N a\n                    <sup>−1</sup>\n                    vs the concept of homeostasis in the fixed-nitrogen inventory"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855568899213440","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Revisiting the distribution of oceanic N2 fixation and estimating diazotrophic contribution to marine production"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855569393126400","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Inputs, losses and transformations of nitrogen and phosphorus in the pelagic North Atlantic Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855569715078272","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Seasonal variations in the distribution of Fe and Al in the surface waters of the Arabian Sea"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570884063360","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates"}]},{"@id":"https://cir.nii.ac.jp/crid/1360857701051692160","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Phytoplankton dynamics as a response to physical events in the oligotrophic Eastern Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861709562915456","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"No nitrogen fixation in the Bay of Bengal?"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861710808790912","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Dinitrogen fixation rates in the Bay of Bengal during summer monsoon"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861710901362688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Primary production by phytoplankton along the Kenyan coast during the SE monsoon and November intermonsoon 1992, and the occurrence of Trichodesmium"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861711788799360","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Evidence of the Significant Contribution of Heterotrophic Diazotrophs to Nitrogen Fixation in the Eastern Indian Ocean During Pre-Southwest Monsoon Period"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861714396633984","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Marine bacterial richness increases towards higher latitudes in the eastern Indian Ocean"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865817589602560","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Role of the southern Indian Ocean in the transitions of the monsoon-ENSO system during recent decades"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865817589831296","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Monsoonal impact on circulation pathways in the Indian 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