Trace/minor element:calcium ratios in cultured benthic foraminifera. Part II: Ontogenetic variation

Hintz, C. J.; Shaw, Timothy J.; Bernhard, Joan M.; Chandler, G. Thomas; McCorkle, Daniel C.; Blanks, Jessica K.

doi:10.1016/j.gca.2005.12.019

Cited by 49 publications

(45 citation statements)

References 60 publications

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“…5). This is in contrast with a number of reports on sizespecific Mg/Ca ratios in other species of benthic foraminifera from culturing experiments (Hintz et al, 2006;Filipsson et al, 2010;Diz et al, 2012). Discrepancies between studies could stem from speciesspecific differences in controls on element incorporation, sample size, or both.…”

Section: Interchamber and Size-related Variability In Sr/ca And Mg/cacontrasting

confidence: 64%

“…Spero and Lea, 1996;Bijma et al, 1998). Using newborn clones (Section 2.1; Hintz et al, 2006;McCorkle et al, 2008;Filipsson et al, 2010;Barras et al, 2010;Diz et al, 2012) circumvents the inaccuracies associated with such manipulations and allows analysis of the smallest foraminifer size fractions. Moreover, using LA-ICP-MS, the full range of chamber sizes can be analyzed for elements with sufficiently high concentrations (e.g.…”

Section: Reproduction Growth Rates and Size-normalized Weightsmentioning

confidence: 99%

“…Previous work suggested that ontogenetic (i.e. life-stage related) changes can be responsible for intra-and inter-test Mg/Ca variability in benthic foraminifera (Hintz et al, 2006;Filipsson et al, 2010;Raitzsch et al, 2011a;Diz et al, 2012). Ontogeny can affect trace element partitioning through changes in physiology, growth rate or changes in surface area-volume ratios.…”

Section: Introductionmentioning

confidence: 99%

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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

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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%.

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Section: Interchamber and Size-related Variability In Sr/ca And Mg/cacontrasting

confidence: 64%

Section: Reproduction Growth Rates and Size-normalized Weightsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

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show abstract

“…Ontogenetic measurements of microdissected chambers of benthic foraminiferal tests in controlled culture conditions indicate that Mg may be enriched during middle development, independent of temperature, resulting in the oldest and youngest chambers having the lowest Mg/Ca signatures (19). Furthermore, analyses of multiple whole tests of various species of Bolivina from the benthos show no clear correlation between Mg/Ca and temperature (20).…”

Section: Resultsmentioning

confidence: 99%

Surviving mass extinction by bridging the benthic/planktic divide

Darling

Thomas

Kasemann

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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Evolution of planktic organisms from benthic ancestors is commonly thought to represent unidirectional expansion into new ecological domains, possibly only once per clade. For foraminifera, this evolutionary expansion occurred in the Early-Middle Jurassic, and all living and extinct planktic foraminifera have been placed within 1 clade, the Suborder Globigerinina. The subsequent radiation of planktic foraminifera in the Jurassic and Cretaceous resulted in highly diverse assemblages, which suffered mass extinction at the end of the Cretaceous, leaving an impoverished assemblage dominated by microperforate triserial and biserial forms. The few survivor species radiated to form diverse assemblages once again in the Cenozoic. There have, however, long been doubts regarding the monophyletic origin of planktic foraminifera. We present surprising but conclusive genetic evidence that the Recent biserial planktic Streptochilus globigerus belongs to the same biological species as the benthic Bolivina variabilis, and geochemical evidence that this ecologically flexible species actively grows within the open-ocean surface waters, thus occupying both planktic and benthic domains. Such a lifestyle (tychopelagic) had not been recognized as adapted by foraminifera. Tychopelagic are endowed with great ecological advantage, enabling rapid recolonization of the extinction-susceptible pelagic domain from the benthos. We argue that the existence of such forms must be considered in resolving foraminiferal phylogeny.end-Cretaceous ͉ foraminifera ͉ Mg/Ca ͉ plankton evolution ͉ SSU rRNA

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“…Some ontogenic (development stage) effects on proxy incorporation have been identified in benthic (Wefer et al, 1981;Boyle, 1995;Hintz et al, 2006) and in planktonic foraminifera (Bijma et al, 1998). The latter found δ 18 O and δ 13 C variation in planktonic foraminifera Globigerinella siphonifera of up to 0.4‰ for oxygen isotopes and 1.5‰ for carbon isotopes due to ontogenic effects.…”

Section: Discussionmentioning

confidence: 97%

In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera

Rollion‐Bard¹,

Vigier²,

Spezzaferri³

2007

Chemical Geology

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An analytical procedure has been developed for the in situ measurement of calcium isotope composition of carbonates with a spatial resolution of 15-20 μm on a Caméca IMS 1270 ion microprobe. By using two Faraday cup detectors, the 40 Ca and 44 Ca can be measured simultaneously, improving the internal reproducibility. Instrumental mass fractionation (IMF) of calcium isotopes was observed to be independent of primary ion beam intensity and of the Mg content of the carbonate, but can depend on vacuum conditions. Three calcite reference materials were used in this study (ENS 0, MEX and BRET 105E) and their δ 44 Ca values relative to NIST915a were reproducible within a typical 1σ standard deviation of ≈0.15‰.This analytical procedure was applied to planktonic foraminifera, Globorotalia inflata, dated at 2.8 Ma from Shatsky Rise (ODP leg 198). The range of measured δ 44 Ca within a single test is 1.7‰. This intratest variation can be attributed to several processes such as temperature variation, ontogenic effects or differences between primary and secondary calcite (i.e. calcite precipitated by different biomineralization processes).Despite this intratest variation, the averages δ 44 Ca for each foraminifer are similar and are in agreement with published δ 44 Ca values measured for this age. This study shows that in situ δ 44 Ca measurements in tests of foraminifera are an appropriate tool for investigating biomineralization processes.

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Trace/minor element:calcium ratios in cultured benthic foraminifera. Part II: Ontogenetic variation

Cited by 49 publications

References 60 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

Surviving mass extinction by bridging the benthic/planktic divide

In situ measurements of calcium isotopes by ion microprobe in carbonates and application to foraminifera

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