Effects of seawater pH and calcification rate on test Mg/Ca and Sr/Ca in cultured individuals of the benthic, calcitic foraminifera Elphidium williamsoni

Allison, Nicola; Austin, Heather; Austin, William E. N.; Paterson, David M.

doi:10.1016/j.chemgeo.2011.08.001

Cited by 17 publications

(16 citation statements)

References 32 publications

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“…The Sr/Ca of B. sphaerulata and A. hemprichii ranged, respectively, from 2.4 to 2.7 mmol mol 21 and from 1.8 to 2.1 mmol mol 21 . This is coherent with previous data collected on high-Mg calcite foraminifers (Allison et al, 2011;Dueñas-Boh orquez et al, 2011;Elderfield et al, 2002;Gacutan et al, 2017;Raitzsch et al, 2010;Raja et al, 2005;van Dijk et al, 2017). Sr/Ca from A. hemprichii (porcelaneous) is on average 2 mmol.mol 21 (Elderfield et al, 2002;Raja et al, 2005, and this study) whereas Sr/Ca from H. depressa and Baculogypsina sphaerulata (hyaline) are higher 2.5 mmol mol 21 (Dueñas-Boh orquez et al, 2011; Gacutan et al, 2017;Raitzsch et al, 2010, and this study) suggesting that the mode of calcification could influence the Sr/Ca in these species.…”

Section: Element To Calcium Ratio and Partition Coefficientsupporting

confidence: 93%

“…Based on our experimental setting, only p CO 2 changes can be discussed below and no discrimination with covarying carbonate chemistry parameters as pH can be examined. While it has been suggested that the calcite saturation state and pH could influence the Mg/Ca in benthic foraminifers (Elderfield et al, ), no evidence of the influence of neither [

{CO}_{3}^{2 -}

] nor pH in the incorporation of Mg in foraminifer species Ammonia tepida , Heterostegina depressa , and Elphidium williamsoni was observed before (Allison et al, ; Dissard et al, ; Dueñas‐Bohórquez et al, ). The same equivocal evidence can be found in regards to the incorporation of Sr/Ca in benthic foraminifers (Dueñas‐Bohórquez et al, ).…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂

Not

Thibodeau

Yokoyama

2018

Geochem Geophys Geosyst

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Measurement of elemental ratios (E/Ca) has been performed in two symbiont‐bearing species of high‐Mg calcite benthic foraminifers (hyaline, Baculogypsina sphaerulata and porcelaneous, Amphisorus hemprichii), cultured under five pCO2 levels, representing preindustrial, modern, and three predicted future values. E/Ca ratios were analyzed by Laser Ablation coupled with Inductively Coupled Plasma Mass Spectrometer (LA‐ICP‐MS). We measured several E/Ca, such as Mg/Ca, Sr/Ca, Ba/Ca, U/Ca, and B/Ca simultaneously. We observed that high‐Mg calcite benthic foraminifers possess higher E/Ca than low‐Mg calcite foraminifers, irrespective of their calcification mode (hyaline or porcelaneous). In both modes of calcification, Mg, Sr, Ba, U, and B incorporation could be controlled by Rayleigh fractionation. However, more data are needed to validate and quantify the relative importance of this process and closely investigate the presence/absence of other mechanism. Therefore, it highlights the need for a multielemental approach when looking at trace element incorporation. Finally, no significant relationship was observed between the different ratios and the pCO2 of the water, suggesting that none of the Mg/Ca, Sr/Ca, Ba/Ca, U/Ca, and B/Ca is sensitive to bottom water pCO2 or pH for these species.

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Section: Element To Calcium Ratio and Partition Coefficientsupporting

confidence: 93%

{CO}_{3}^{2 -}

Section: Discussionmentioning

confidence: 97%

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂

Not

Thibodeau

Yokoyama

2018

Geochem Geophys Geosyst

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“…Similarly, Allison et al (2010) stained Elphidium williamsoni with 20 mg/l for 3-4 weeks and noticed no difference in survival. Some test abnormalities (usually confined to a single chamber) can be seen in the SEM micrographs presented by Allison et al (2011), but it is not clear if these abnormalities reflect the effect of calcein or if they reflect the mechanical handling of the specimens when the foraminifera were transported into and out of the calcein stain. In view of these results, it seems most likely that the only relevant difference between this experiment and previous work is the duration of the experiment.…”

Section: Effect Of Calcein On Reproduction In Benthic Foraminiferamentioning

confidence: 97%

Assessing the effect of calcein incorporation on physiological processes of benthic foraminifera

Kurtarkar

Saraswat

Nigam

et al. 2015

Marine Micropaleontology

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“…Here we present results from a culturing study using two benthic species with contrasting calcification mechanism: the hyaline (i.e., perforate) Elphidium crispum , precipitating calcite with a low Mg content (∼5 mmol/mol; Allison et al ., ) and the porcelaneous (i.e., miliolid) Quinqueloculina sp. (Mg/Ca = ∼140 mmol/mol; Toyofuku et al, ).…”

Section: Introductionmentioning

confidence: 99%

The Impacts of Seawater Mg/Ca and Temperature on Element Incorporation in Benthic Foraminiferal Calcite

Nooijer

Dijk

Toyofuku

et al. 2017

Geochem Geophys Geosyst

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On geological timescales, oceanic [Mg2+] and [Ca2+] vary with changing rates of weathering, seafloor spreading and dolomite formation. Accurate reconstruction of the ratio between [Mg2+] and [Ca2+] in seawater (Mg/Casw), may potentially be reconstructed using foraminiferal Mg/Ca ratios. Since both temperature and seawater Mg/Ca impact foraminiferal Mg/Ca, successful reconstruction of Mg/Casw requires quantification of both these parameters independently on foraminiferal Mg/Ca, as well as their combined effect on Mg‐incorporation. Here we present the combined and isolated impacts of temperature and Mg/Casw on Mg incorporation in two model species, the benthic hyaline (i.e., perforate) foraminifer Elphidium crispum and porcelaneous (i.e., miliolid) foraminifer Quinqueloculina sp. using controlled growth experiments. Specimens of these two species were kept at four different temperatures (ranging from 10 to 27°C) and three Mg/Casw's (3.4, 6.4 and 8.5 mol/mol), resulting in 12 experimental conditions. Newly grown calcite was analyzed for a number of elements (Na, Mg and Sr) by laser ablation‐ICP‐MS. Results show that although the Mg/Ca varied by more than an order of magnitude between species, the sensitivity of Mg incorporation with respect to temperature appeared not to be influenced by Mg/Casw. By extension, these results may also help improving accuracy in the reconstruction of past Mg/Casw based on foraminifera with contrasting Mg/Ca.

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Effects of seawater pH and calcification rate on test Mg/Ca and Sr/Ca in cultured individuals of the benthic, calcitic foraminifera Elphidium williamsoni

Cited by 17 publications

References 32 publications

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂

Assessing the effect of calcein incorporation on physiological processes of benthic foraminifera

The Impacts of Seawater Mg/Ca and Temperature on Element Incorporation in Benthic Foraminiferal Calcite

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Effects of seawater pH and calcification rate on test Mg/Ca and Sr/Ca in cultured individuals of the benthic, calcitic foraminifera Elphidium williamsoni

Cited by 17 publications

References 32 publications

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO2

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO2

Assessing the effect of calcein incorporation on physiological processes of benthic foraminifera

The Impacts of Seawater Mg/Ca and Temperature on Element Incorporation in Benthic Foraminiferal Calcite

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Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂

Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled pCO₂