Effect of salinity and seawater calcite saturation state on Mg and Sr incorporation in cultured planktonic foraminifera

Dueñas-Bohórquez, Adriana; Rocha, Régine Elisabeth da; Kuroyanagi, Azumi; Biȷma, Jelle; Reichart, Gert‐Jan

doi:10.1016/j.marmicro.2009.09.002

Cited by 100 publications

(110 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reported inter-and intra-individual variability in Sr/Ca is smaller than observed for Mg/Ca (e.g. Dueñas-Bohórquez et al, 2009. The partition coefficient for Sr incorporation is closer to that found in inorganic precipitation experiments (e.g.…”

Section: Introductionsupporting

confidence: 64%

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Nooijer

Hathorne

Reichart

et al. 2014

Marine Micropaleontology

View full text Add to dashboard Cite

Biological activity introduces variability in element incorporation during calcification and thereby decreases the precision and accuracy when using foraminifera as geochemical proxies in paleoceanography. This so-called 'vital effect' consists of organismal and environmental components. Whereas organismal effects include uptake of ions from seawater and subsequent processing upon calcification, environmental effects include migration-and seasonality-induced differences. Triggering asexual reproduction and culturing juveniles of the benthic foraminifer Ammonia tepida under constant, controlled conditions allow environmental and genetic variability to be removed and the effect of cell-physiological controls on element incorporation to be quantified. Three groups of clones were cultured under constant conditions while determining their growth rates, size-normalized weights and single-chamber Mg/Ca and Sr/Ca using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Results show no detectable ontogenetic control on the incorporation of these elements in the species studied here. Despite constant culturing conditions, Mg/Ca varies by a factor of~4 within an individual foraminifer while intra-individual Sr/Ca varies by only a factor of 1.6. Differences between clone groups were similar to the intra-clone group variability in element composition, suggesting that any genetic differences between the clonegroups studied here do not affect trace element partitioning. Instead, variability in Mg/Ca appears to be inherent to the process of bio-calcification itself. The variability in Mg/Ca between chambers shows that measurements of at least 6 different chambers are required to determine the mean Mg/Ca value for a cultured foraminiferal test with a precision of ≤10%.

show abstract

Section: Introductionsupporting

confidence: 64%

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Nooijer

Hathorne

Reichart

et al. 2014

Marine Micropaleontology

View full text Add to dashboard Cite

show abstract

“…Energy density for the glass was higher than for the foraminifera (5 and 1 J cm −2 , respectively). Although the resulting difference in ablation characteristics is not likely to affect obtained foraminiferal element concentrations (Hathorne et al, 2008), foraminiferal element concentrations were compared to those from a calcite standard made in-house with known element concentrations and ablated at the same energy density as the foraminifera (Dueñas-Bohórquez et al, 2009). Relative standard deviation for Mg / Ca and Sr / Ca based on repeated measurements on this material was < 5 % for both ratios.…”

Section: Sample Preparation and Analysismentioning

confidence: 99%

“…Interestingly, the partitioning of different elements is not the same between taxa. For example, Sr / Ca in LBF is approximately twice as high (Dueñas-Bohorquez et al, 2011;Evans et al, 2015) as in planktonic species (Elderfield et al, 2002;Dueñas-Bohórquez et al, 2009;Hendry et al, 2009), whereas the ratio between the D Mg of these groups is between 10 and 100 (see above). Comparing the offset of D between groups as a function of D itself shows an approx-imate logarithmic correlation (Fig.…”

Section: Biomineralization and Element Incorporationmentioning

confidence: 99%

Ba incorporation in benthic foraminifera

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract. Barium (Ba) incorporated in the calcite of many foraminiferal species is proportional to the concentration of Ba in seawater. Since the open ocean concentration of Ba closely follows seawater alkalinity, foraminiferal Ba / Ca can be used to reconstruct the latter. Alternatively, Ba / Ca from foraminiferal shells can also be used to reconstruct salinity in coastal settings in which seawater Ba concentration corresponds to salinity as rivers contain much more Ba than seawater. Incorporation of a number of minor and trace elements is known to vary (greatly) between foraminiferal species, and application of element / Ca ratios thus requires the use of species-specific calibrations. Here we show that calcite Ba / Ca correlates positively and linearly with seawater Ba / Ca in cultured specimens of two species of benthic foraminifera: Heterostegina depressa and Amphistegina lessonii. The slopes of the regression, however, vary two-to threefold between these two species (0.33 and 0.78, respectively). This difference in Ba partitioning resembles the difference in partitioning of other elements (Mg, Sr, B, Li and Na) in these foraminiferal taxa. A general trend across element partitioning for different species is described, which may help develop new applications of trace elements in foraminiferal calcite in reconstructing past seawater chemistry.

show abstract

“…Elemental concentrations were calculated for 24 Mg, 26 Mg, 43 Ca and 44 Ca using the software GLITTER (version 4.4.3). A carbonate standard, produced in-house, with known Mg / Ca and Sr / Ca was measured at an energy density of ∼ 1.2 J cm −2 every 10-12 foraminiferal samples and allowed us to check for matrix effects that may result from switching between energy densities (Dueñas-Bohórquez et al, 2009 …”

Section: Element Measurementsmentioning

confidence: 99%

Impact of seawater [Ca<sup>2+</sup>] on the calcification and calciteMg / Ca of <i>Amphistegina lessonii</i>

et al. 2015

View full text Add to dashboard Cite

Abstract. Mg / Ca ratios in foraminiferal tests are routinely used as paleotemperature proxies, but on long timescales, they also hold the potential to reconstruct past seawater Mg / Ca. The impact of both temperature and seawater Mg / Ca on Mg incorporation in Foraminifera has been quantified by a number of studies. The underlying mechanism responsible for Mg incorporation in foraminiferal calcite and its sensitivity to environmental conditions, however, has not been fully identified. A recently published biomineralization model (Nehrke et al., 2013) Nehrke et al. (2013). Here, however, we suggest transmembrane transport fractionation that is not as strong as suggested by Nehrke et al. (2013).

show abstract

Effect of salinity and seawater calcite saturation state on Mg and Sr incorporation in cultured planktonic foraminifera

Cited by 100 publications

References 45 publications

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Ba incorporation in benthic foraminifera

Impact of seawater [Ca<sup>2+</sup>] on the calcification and calciteMg / Ca of <i>Amphistegina lessonii</i>

Contact Info

Product

Resources

About

Effect of salinity and seawater calcite saturation state on Mg and Sr incorporation in cultured planktonic foraminifera

Cited by 100 publications

References 45 publications

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Variability in calcitic Mg/Ca and Sr/Ca ratios in clones of the benthic foraminifer Ammonia tepida

Ba incorporation in benthic foraminifera

Impact of seawater [Ca&lt;sup&gt;2+&lt;/sup&gt;] on the calcification and calciteMg / Ca of &lt;i&gt;Amphistegina lessonii&lt;/i&gt;

Contact Info

Product

Resources

About

Impact of seawater [Ca<sup>2+</sup>] on the calcification and calciteMg / Ca of <i>Amphistegina lessonii</i>