globalchange  > 气候变化与战略
DOI: 10.1111/gcb.14858
论文题名:
Trends in tuna carbon isotopes suggest global changes in pelagic phytoplankton communities
作者: Lorrain A.; Pethybridge H.; Cassar N.; Receveur A.; Allain V.; Bodin N.; Bopp L.; Choy C.A.; Duffy L.; Fry B.; Goñi N.; Graham B.S.; Hobday A.J.; Logan J.M.; Ménard F.; Menkes C.E.; Olson R.J.; Pagendam D.E.; Point D.; Revill A.T.; Somes C.J.; Young J.W.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2020
卷: 26, 期:2
语种: 英语
英文关键词: albacore tuna ; Atlantic Ocean ; bigeye tuna ; biogeochemical cycles ; carbon cycle ; Indian Ocean ; Pacific Ocean ; phytoplankton ; Suess effect ; yellowfin tuna
Scopus关键词: biogeochemical cycle ; carbon cycle ; carbon isotope ; community structure ; food web ; global change ; isotopic composition ; pelagic ecosystem ; phytoplankton ; stable isotope ; trend analysis ; Atlantic Ocean ; Indian Ocean ; Pacific Ocean ; Bacillariophyta ; Scombridae ; Thunnus alalunga ; Thunnus albacares ; Thunnus obesus
英文摘要: Considerable uncertainty remains over how increasing atmospheric CO2 and anthropogenic climate changes are affecting open-ocean marine ecosystems from phytoplankton to top predators. Biological time series data are thus urgently needed for the world's oceans. Here, we use the carbon stable isotope composition of tuna to provide a first insight into the existence of global trends in complex ecosystem dynamics and changes in the oceanic carbon cycle. From 2000 to 2015, considerable declines in δ13C values of 0.8‰–2.5‰ were observed across three tuna species sampled globally, with more substantial changes in the Pacific Ocean compared to the Atlantic and Indian Oceans. Tuna recorded not only the Suess effect, that is, fossil fuel-derived and isotopically light carbon being incorporated into marine ecosystems, but also recorded profound changes at the base of marine food webs. We suggest a global shift in phytoplankton community structure, for example, a reduction in 13C-rich phytoplankton such as diatoms, and/or a change in phytoplankton physiology during this period, although this does not rule out other concomitant changes at higher levels in the food webs. Our study establishes tuna δ13C values as a candidate essential ocean variable to assess complex ecosystem responses to climate change at regional to global scales and over decadal timescales. Finally, this time series will be invaluable in calibrating and validating global earth system models to project changes in marine biota. © 2019 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159389
Appears in Collections:气候变化与战略

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作者单位: IRD, CNRS, Ifremer, LEMAR, Univ Brest, Plouzané, France; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States; Pacific Community, Oceanic Fisheries Programme, Nouméa, New Caledonia; IRD, Fishing Port, Victoria, Mahe, Seychelles; Seychelles Fishing Authority (SFA), Victoria, Mahe, Seychelles; Laboratoire de Météorologie Dynamique (LMD), Institut Pierre-Simon Laplace (IPSL), Ecole Normale Supérieure/PSL Res. Univ., CNRS, Ecole Polytechnique, Sorbonne Université, Paris, France; Integrative Oceanography Division, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Inter-American Tropical Tuna Commission, (IATTC), La Jolla, CA, United States; Australian Rivers Institute, Griffith University, Nathan, Qld, Australia; AZTI, Marine Research, Pasaia, Gipuzkoa, Spain; National Institute of Water and Atmospheric Research, Ltd. (NIWA), Wellington, New Zealand; Massachusetts Division of Marine Fisheries, New Bedford, MA, United States; Aix Marseille University, University of Toulon, CNRS, IRD, MIO, UM110, Marseille, France; IRD, UMR ENTROPIE, Nouméa cedex, New Caledonia; CSIRO, Computational Informatics, Brisbane, Qld, Australia; Observatoire Midi-Pyrénées, GET, UMR CNRS 5563/IRD 234, Université́ Paul Sabatier Toulouse 3, Toulouse, France; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany

Recommended Citation:
Lorrain A.,Pethybridge H.,Cassar N.,et al. Trends in tuna carbon isotopes suggest global changes in pelagic phytoplankton communities[J]. Global Change Biology,2020-01-01,26(2)
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