globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1918943117
论文题名:
Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean
作者: Lebrato M.; Garbe-Schönberg D.; Müller M.N.; Blanco-Ameijeiras S.; Feely R.A.; Lorenzoni L.; Molinero J.-C.; Bremer K.; Jones D.O.B.; Iglesias-Rodriguez D.; Greeley D.; Lamare M.D.; Paulmier A.; Graco M.; Cartes J.; Barcelos e Ramos J.; de Lara A.; Sanchez-Leal R.; Jimenez P.; Paparazzo F.E.; Hartman S.E.; Westernströer U.; Küter M.; Benavides R.; da Silva A.F.; Bell S.; Payne C.; Olafsdottir S.; Robinson K.; Jantunen L.M.; Korablev A.; Webster R.J.; Jones E.M.; Gilg O.; du Bois P.B.; Beldowski J.; Ashjian C.; Yahia N.D.; Twining B.; Chen X.-G.; Tseng L.-C.; Hwang J.-S.; Dahms H.-U.; Oschlies A.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:36
起始页码: 22281
结束页码: 22292
语种: 英语
英文关键词: Biogeochemistry ; Global ; Mg:Ca ; Seawater ; Sr:Ca
Scopus关键词: calcium ; magnesium ; sea water ; strontium ; alkalinity ; Article ; biogeochemistry ; ecosystem ; elemental analysis ; environmental monitoring ; geography ; marine environment ; physical chemistry ; physical parameters ; priority journal ; water analysis ; water quality
英文摘要: Seawater Mg:Ca and Sr:Ca ratios are biogeochemical parameters reflecting the Earth–ocean–atmosphere dynamic exchange of elements. The ratios’ dependence on the environment and organisms’ biology facilitates their application in marine sciences. Here, we present a measured single-laboratory dataset, combined with previous data, to test the assumption of limited seawater Mg:Ca and Sr:Ca variability across marine environments globally. High variability was found in open-ocean upwelling and polar regions, shelves/neritic and river-influenced areas, where seawater Mg:Ca and Sr:Ca ratios range from ∼4.40 to 6.40 mmol:mol and ∼6.95 to 9.80 mmol:mol, respectively. Open-ocean seawater Mg:Ca is semiconservative (∼4.90 to 5.30 mol:mol), while Sr:Ca is more variable and nonconservative (∼7.70 to 8.80 mmol:mol); both ratios are nonconservative in coastal seas. Further, the Ca, Mg, and Sr elemental fluxes are connected to large total alkalinity deviations from International Association for the Physical Sciences of the Oceans (IAPSO) standard values. Because there is significant modern seawater Mg:Ca and Sr:Ca ratios variability across marine environments we cannot absolutely assume that fossil archives using taxa-specific proxies reflect true global seawater chemistry but rather taxa- and process-specific ecosystem variations, reflecting regional conditions. This variability could reconcile secular seawater Mg:Ca and Sr:Ca ratio reconstructions using different taxa and techniques by assuming an error of 1 to 1.50 mol:mol, and 1 to 1.90 mmol:mol, respectively. The modern ratios’ variability is similar to the reconstructed rise over 20 Ma (Neogene Period), nurturing the question of semi-nonconservative behavior of Ca, Mg, and Sr over modern Earth geological history with an overlooked environmental effect. © 2020 National Academy of Sciences. 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/164050
Appears in Collections:气候变化与战略

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作者单位: Lebrato, M., Geosciences Department, Kiel University, Kiel, 24118, Germany; Garbe-Schönberg, D., Geosciences Department, Kiel University, Kiel, 24118, Germany; Müller, M.N., Oceanography Department, Federal University of Pernambuco, Recife, 50670-901, Brazil; Blanco-Ameijeiras, S., Earth Sciences Department, ETH Zürich, Zürich, 8092, Switzerland; Feely, R.A., Ocean Climate Department, Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA 98115, United States; Lorenzoni, L., Remote Sensing Department, University of South Florida, Tampa, FL 33701, United States; Molinero, J.-C., Ecology Department, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 24148, Germany; Bremer, K., Geosciences Department, Kiel University, Kiel, 24118, Germany; Jones, D.O.B., Ocean Biogeochemistry and Ecosystems Department, National Oceanography Center, Southampton, SO14 3ZH, United Kingdom; Iglesias-Rodriguez, D., Ecology, Evolution and Marine Biology Department, University of California, Santa Barbara, CA 93106, United States; Greeley, D., Ocean Climate Department, Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA 98115, United States; Lamare, M.D., Department of Marine Science, University of Otago, Dunedin, 9016, New Zealand; Paulmier, A., Biogeosciences Department, Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales, Institut de Recherche pour le Développement, CNRS, Centre National d’Etudes Spatiales, Université Paul Sabatier, University of Toulouse, Toulouse, 31000, France; Graco, M., Biogeosciences Department, Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales, Institut de Recherche pour le Développement, CNRS, Centre National d’Etudes Spatiales, Université Paul Sabatier, University of Toulouse, Toulouse, 31000, France; Cartes, J., Renewable Marine Resources Department, Institute of Marine Sciences at Spanish National Research Council, Barcelona, 08003, Spain; Barcelos e Ramos, J., Climate, Meteorology and Global Changes Department, University of the Azores, Ponta Delgada, 9501-855, Portugal; de Lara, A., Organisms & Systems Biology Department, University of Oviedo, Oviedo, 33003, Spain; Sanchez-Leal, R., Physical Oceanography Department, Spanish Institute of Oceanography, Cadiz, 11006, Spain; Jimenez, P., Physical Oceanography Department, Spanish Institute of Oceanography, Cadiz, 11006, Spain; Paparazzo, F.E., Biological Oceanography, Centro para el Estudio de Sistemas Marinas, Consejo Nacional de Investigaciones Científicas y Técnicas, Chubut, 2915, Argentina; Hartman, S.E., Ocean Biogeochemistry and Ecosystems Department, National Oceanography Center, Southampton, SO14 3ZH, United Kingdom; Westernströer, U., Geosciences Department, Kiel University, Kiel, 24118, Germany; Küter, M., Geosciences Department, Kiel University, Kiel, 24118, Germany; Benavides, R., Ecology Department, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 24148, Germany; da Silva, A.F., Marine Biogeochemistry Department, Bazaruto Center for Scientific Studies, Benguerra Island, Vilankulos, 1304, Mozambique; Bell, S., Marine Chemistry Department, Bermuda Institute of Ocean Sciences, GE 01, St. George, Bermuda; Payne, C., Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Olafsdottir, S., Marine Environment Department, Marine and Freshwater Research Institute, Reykjavic, 101, Iceland; Robinson, K., Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, United States; Jantunen, L.M., Air Quality Processes Research Department, Environment and Climate Change CanadaON L0L 1N0, Canada; Korablev, A., Geophysics Department, University of Bergen, Bergen, 5007, Norway; Webster, R.J., Clinical Research Unit, CHEO Research Institute, Ottawa, ON K1H 8L1, Canada; Jones, E.M., Oceanography and Climate Department, Institute of Marine Research, Tromsø, 9007, Norway; Gilg, O., Chrono-Environnement Department, Université de Bourgogne Franche-Comté, Dijon, 21078, France; du Bois, P.B., Radioecology Department, Cherbourg Radioecology Laboratory, Institut de Radioprotection et de, Sȗreté Nucléaire, Octeville, 50130, France; Beldowski, J., Marine Chemistry and Biochemistry Department, Polish Academy of Sciences, Sopot, 81-712, Poland; Ashjian, C., Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Yahia, N.D., Biological and Environmental Sciences Department, Qatar University, Doha, 2713, Qatar; Twining, B., Center for Ocean Biogeochemistry and Climate Change, Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 04544, United States; Chen, X.-G., Department of Ocean Science and Engineering, Zhejiang University, Zhoushan, 316021, China; Tseng, L.-C., Marine Biology Institute, National Taiwan Ocean University, Keelung City, 20224, Taiwan; Hwang, J.-S., Marine Biology Institute, National Taiwan Ocean University, Keelung City, 20224, Taiwan, Center for Excellence for the Oceans, National Taiwan Ocean University, Keelung City, 20224, Taiwan; Dahms, H.-U., Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Oschlies, A., Ecology Department, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, 24148, Germany

Recommended Citation:
Lebrato M.,Garbe-Schönberg D.,Müller M.N.,et al. Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(36)
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