globalchange  > 气候变化事实与影响
DOI: 10.1002/2015GB005117
Scopus记录号: 2-s2.0-84955178282
论文题名:
Contrasted geographical distribution of N2 fixation rates and nifH phylotypes in the Coral and Solomon Seas (southwestern Pacific) during austral winter conditions
作者: Bonnet S; , Rodier M; , Turk-Kubo K; A; , Germineaud C; , Menkes C; , Ganachaud A; , Cravatte S; , Raimbault P; , Campbell E; , Quéroué F; , Sarthou G; , Desnues A; , Maes C; , Eldin G
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期:11
起始页码: 1874
结束页码: 1892
语种: 英语
英文关键词: N2 fixation ; nifH ; Pacific
Scopus关键词: bacterium ; biogeography ; correlation ; cyanobacterium ; database ; dominance ; eukaryote ; geographical distribution ; global ocean ; nitrogen fixation ; winter ; Coral Sea ; Pacific Ocean ; Pacific Ocean (Southwest) ; Solomon Sea ; Anthozoa ; Cyanobacteria ; Proteobacteria ; Trichodesmium
英文摘要: Biological dinitrogen (N2) fixation and the distribution of diazotrophic phylotypes were investigated during two cruises in the Coral Sea and the Solomon Sea (southwestern Pacific) during austral winter conditions. N2 fixation rates were measurable at every station, but integrated (0-150 m) rates were an order of magnitude higher in the Solomon Sea (30 to 5449 μmol N m-2 d-1) compared to those measured in the Coral Sea (2 to 109 μmol N m-2 d-1). Rates measured in the Solomon Sea were in the upper range (100-1000 μmol N m-2 d-1) or higher than rates compiled in the global MARine Ecosystem biomass DATa database, indicating that this region has some of the highest N2 fixation rates reported in the global ocean. While unicellular diazotrophic cyanobacteria from group A (UCYN-A1 and UCYN-A2) and the proteobacteria γ-24774A11 dominated in the Coral Sea and were correlated with N2 fixation rates (p < 0.05), Trichodesmium and UCYN-B dominated in the Solomon Sea and were correlated (p < 0.05) with N2 fixation rates. UCYN-A were totally absent in the Solomon Sea. The biogeographical distribution of diazotrophs is discussed within the context of patterns in measured environmental parameters. © 2015. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77911
Appears in Collections:气候变化事实与影响

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作者单位: Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography UM 110, Marseille, France; Ecosystèmes Insulaires Océaniens, Institut de Recherche Pour le Développement, Université de la Polynésie Française, Institut Malarmé-Ifremer, Papeete, French Polynesia; Department of Ocean Sciences, University of California, Santa Cruz, CA, United States; Institut de Recherche Pour le Développement, Université de Toulouse III-CNRS-CNES, UMR5566-Laboratoire d'Etudes en Geophysique et Oceanographie Spatiale, Toulouse Cedex, France; Institut de Recherche Pour le Développement-Sorbonne Universités, (UPMC Université Paris 06)-CNRS-MNHN, Laboratoire d'Oceanographie et du Climat: Experimentations et Approches Numeriques, Nouméa Cedex, France; Laboratoire des Sciences de l'Environnement Marin, UMR CNRS-IRD-UBO-IFREMER 6539/LEMAR/IUEM, Technopôle Brest Iroise, Place Nicolas Copernic, Plouzané, France; Laboratoire de Physique des Océans, UMR 6523 CNRS-Ifremer-IRD-UBO, Centre Ifremer de Brest, Plouzané, France

Recommended Citation:
Bonnet S,, Rodier M,, Turk-Kubo K,et al. Contrasted geographical distribution of N2 fixation rates and nifH phylotypes in the Coral and Solomon Seas (southwestern Pacific) during austral winter conditions[J]. Global Biogeochemical Cycles,2015-01-01,29(11)
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