globalchange  > 气候减缓与适应
DOI: 10.1038/s41561-017-0028-x
论文题名:
Influence of diatom diversity on the ocean biological carbon pump
作者: Tréguer P.; Bowler C.; Moriceau B.; Dutkiewicz S.; Gehlen M.; Aumont O.; Bittner L.; Dugdale R.; Finkel Z.; Iudicone D.; Jahn O.; Guidi L.; Lasbleiz M.; Leblanc K.; Levy M.; Pondaven P.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2018
卷: 11, 期:1
起始页码: 27
结束页码: 37
语种: 英语
Scopus关键词: biogenic material ; biological pump ; chlorophyll ; diatom ; food web ; life cycle ; marine snow ; morphology ; ocean acidification ; plankton ; primary production ; Southern Ocean ; Bacillariophyta
英文摘要: Diatoms sustain the marine food web and contribute to the export of carbon from the surface ocean to depth. They account for about 40% of marine primary productivity and particulate carbon exported to depth as part of the biological pump. Diatoms have long been known to be abundant in turbulent, nutrient-rich waters, but observations and simulations indicate that they are dominant also in meso- and submesoscale structures such as fronts and filaments, and in the deep chlorophyll maximum. Diatoms vary widely in size, morphology and elemental composition, all of which control the quality, quantity and sinking speed of biogenic matter to depth. In particular, their silica shells provide ballast to marine snow and faecal pellets, and can help transport carbon to both the mesopelagic layer and deep ocean. Herein we show that the extent to which diatoms contribute to the export of carbon varies by diatom type, with carbon transfer modulated by the Si/C ratio of diatom cells, the thickness of the shells and their life strategies; for instance, the tendency to form aggregates or resting spores. Model simulations project a decline in the contribution of diatoms to primary production everywhere outside of the Southern Ocean. We argue that we need to understand changes in diatom diversity, life cycle and plankton interactions in a warmer and more acidic ocean in much more detail to fully assess any changes in their contribution to the biological pump. © 2017 Macmillan Publishers Limited, part of Springer Nature. 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/105623
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Marine Environmental Sciences Laboratory (LEMAR, UMR 6539), European Institute for Marine Studies, Université de Bretagne Occidentale, CNRS, Plouzané, France; Institut de Biologie de l'Ecole Normale Supérieure, Ecole Normale Supérieure, CNRS, INSERM, PSL Research University, Paris, France; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Laboratoire des Sciences du Climat et de l'Environnement, Institut Pierre Simon Laplace, CEA-CNRS-UVSQ, Orme des Merisiers, Gif-sur-Yvette, Paris, France; Sorbonne Universités (UPMC Univ Paris 06)/CNRS/IRD/MNHN, Laboratoire d'Océanographie et du Climat, Institut Pierre Simon Laplace, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, Univ Antilles Guyane, Univ Nice Sophia Antipolis, CNRS, Evolution Paris Seine, Institut de Biologie Paris Seine, Paris, France; Romberg Tiburon Center, San Francisco State University, Tiburon, CA, United States; Environmental Science Program, Mount Allison University, Sackville, NB, Canada; Stazione Zoologica Anton Dohrn, Naples, Italy; Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire d'Océanographie de Villefranche, Observatoire Océanologique, Villefranche-sur-Mer, France; Aix-Marseille Université, Université de Toulon, CNRS, IRD, MIO, UM110, Marseille, France

Recommended Citation:
Tréguer P.,Bowler C.,Moriceau B.,et al. Influence of diatom diversity on the ocean biological carbon pump[J]. Nature Geoscience,2018-01-01,11(1)
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