Barium content of benthic foraminifera controlled by bottom-water composition

Lea, David W.; Boyle, E.

doi:10.1038/338751a0

Cited by 209 publications

(132 citation statements)

References 15 publications

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“…Planktonic foraminifera, on the other hand can have higher D Ba than M. edulis, ranging from 0.09 to 0.19 (Lea and Boyle, 1991;Lea and Spero, 1992;1994), whereas benthic foraminifera have an even higher D Ba in both laboratory (0.2 -0.5; Havach et al, 2001) and field based studies (0.37; Lea and Boyle, 1989). It can 540 generally be considered that when the partition coefficient of a particular element (Weber, 1973), which is similar to abiogenic aragonite (Kinsman and Holland, 545 1969), whereas in aragonitic bivalve shells the D Sr is around 0.25 and there is no link with SST (Gillikin et al, 2005a) …”

Section: Pathway Of Barium Incorporation Into the Shell 440mentioning

confidence: 99%

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Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction

Gillikin

Dehairs

Lorrain

et al. 2006

Geochimica et Cosmochimica Acta

173

164

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Section: Pathway Of Barium Incorporation Into the Shell 440mentioning

confidence: 99%

“…Barium / calcium ratios have been proposed as a proxy of dissolved seawater Ba/Ca in aragonitic corals (Tudhope et al, 1996;McCulloch et al, 2003;Sinclair and McCulloch, 2004), calcitic foraminifera (Lea and Boyle, 1989; and vesicomyid clam shells (Torres et al, 2001), providing information on salinity, nutrient and alkalinity distributions in past oceans. 100…”

mentioning

confidence: 99%

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction

Gillikin

Dehairs

Lorrain

et al. 2006

Geochimica et Cosmochimica Acta

173

164

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“…Nürnberg et al, 1996;Elderfield et al, 2006). Other established trace-elemental proxies also include Ba / Ca to trace salinity changes due to continental run-off (Lea and Boyle, 1989;Hönisch et al, 2011) and Cd / Ca to reconstruct water masses (Marchitto and Broecker, 2006). Whilst there is a wealth of research applying the geochemistry of foraminiferal calcite for palaeo-oceanographic reconstruction and copious sedimentary redox proxies have been developed (e.g.…”

Section: L Mckay Et Al: a Comparison Of Benthic Foraminiferal Mnmentioning

confidence: 99%

A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn / Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system

et al. 2015

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Abstract. Trace element incorporation into foraminiferal shells (tests) is governed by physical and chemical conditions of the surrounding marine environment, and therefore foraminiferal geochemistry provides a means of palaeooceanographic reconstructions. With the availability of high-spatial-resolution instrumentation with high precision, foraminiferal geochemistry has become a major research topic over recent years. However, reconstructions of past bottom-water oxygenation using foraminiferal tests remain in their infancy. In this study we explore the potential of using Mn / Ca determined by secondary ion mass spectrometry (SIMS) as well as by flow-through inductively coupled plasma optical emission spectroscopy (FT-ICP-OES) in the benthic foraminiferal species Eubuliminella exilis as a proxy for recording changes in bottom-water oxygen conditions in the low-latitude NE Atlantic upwelling system. Furthermore, we compare the SIMS and FT-ICP-OES results with published Mn sediment bulk measurements from the same sediment core. This is the first time that benthic foraminiferal Mn / Ca is directly compared with Mn bulk measurements, which largely agree on the former oxygen conditions. Samples were selected to include different productivity regimes related to Marine Isotope Stage 3 (35-28 ka), the Last Glacial Maximum (28-19 ka), Heinrich Event 1 (18-15.5 ka), Bølling Allerød (15.5-13.5 ka) and the Younger Dryas (13.5-11.5 ka). Foraminiferal Mn / Ca determined by SIMS and FT-ICP-OES is comparable. Mn / Ca was higher during periods with high primary productivity, such as during the Younger Dryas, which indicates lowoxygen conditions. This is further supported by the benthic foraminiferal faunal composition. Our results highlight the proxy potential of Mn / Ca in benthic foraminifera from upwelling systems for reconstructing past variations in oxygen conditions of the sea floor environment as well as the need to use it in combination with other proxy records such as faunal assemblage data.

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“…Foraminiferal test chemistry is widely used in paleoceanography to reconstruct past ocean temperatures (Broecker 1986;Labeyrie et al 1987), global ice volume (Shackleton and Opdyke 1973), nutrient levels and alkalinity (Lea and Boyle 1989), ocean circulation (Duplessy et al 1970;Lear et al 2003), and trace metal composition (Graham et al 1982;Delaney et al 1985;Lynch-Stieglitz et al 1986;Boyle 1988). These reconstructions are based on empirical relations between the chemical composition of seawater and foraminiferal calcium carbonate from core-top calibrations (e.g., Boyle 1981;Lear et al 2002) or culturing experiments (Lea and Spero 1992;Spero et al 1997;Lea et al 1999;Toyofuku et al 2000;Havach et al 2001;De Nooijer et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Intracellular pH distribution in foraminifera determined by the fluorescent probe HPTS

Nooijer

Toyofuku

Oguri

et al. 2008

Limnology & Ocean Methods

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Fossil foraminifera are excellent tools to reconstruct past marine environments since the chemistry of their calcium carbonate reflects many physical and chemical parameters of seawater. However, trace elemental/calcium ratios in foraminiferal calcite vary between species and within specimens, usually deviating from ratios found in inorganically precipitated calcite. Biological control on CaCO 3 precipitation is most likely to proceed by modification of the pH at the site of calcification or by removal of Mg 2+ from the mother solution. In this study, we show the application of the nontoxic fluorescent probe 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) in analyzing foraminiferal intracellular pH. In all analyzed taxa, high-pH vesicles with a size of 3-5 μm were found in the cell, commonly in higher densities toward the ultimate chamber. Vesicles with the highest pH (≥ 8.5) were found in the miliolid species Quinqueloculina costata: hyaline species displayed vesicles with a pH of 8.0-8.5. These results show the potential of the application of HPTS in providing fundamental insights in foraminiferal control on the pH during calcification and thereby on trace elemental partitioning.

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Barium content of benthic foraminifera controlled by bottom-water composition

Cited by 209 publications

References 15 publications

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction

A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn / Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system

Intracellular pH distribution in foraminifera determined by the fluorescent probe HPTS

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