Response of the coccolithophores Emiliania huxleyi and Coccolithus braarudii to changing seawater Mg2+ and Ca2+ concentrations: Mg/Ca, Sr/Ca ratios and δ44/40Ca, δ26/24Mg of coccolith calcite

Müller, Marius; Kısakürek, Başak; Buhl, Dieter; Gutperlet, Ruth; Kolevica, Ana; Riebesell, Ulf; Stoll, Heather; Eisenhauer, Anton

doi:10.1016/j.gca.2011.01.035

Cited by 52 publications

(39 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Herfort et al (2004 and Katagiri et al (2010) both showed that PIC:POC is greatest at [Ca 2+ ] and [Mg 2+ ] similar to present ocean concentrations at the present inorganic carbon concentration, which was the only one examined. Müller et al (2011) found essentially constant PIC:POC with varying Ca 2+ and Mg…”

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 88%

“…During the course of coccolithophore history, CO 2 (with implications for the rest of the inorganic carbon system and pH) and also Ca 2+ and Mg 2+ have varied dramatically (Orr 2011, Müller et al 2011, Zeebe & Ridgwell 2011). The extent of stratification which controls solute transfer between deeper waters and the upper mixed layer, and therefore nitrogen and phosphorus availability, has also varied (Steinacher et al 2010).…”

Section: Coccolithophores In Past and Present Environmentsmentioning

confidence: 99%

“…However, the calcite saturation index has probably varied little over the past 100 million years as documented in deep-sea sediments, due to the halving of the [Ca 2+ ] and increase in [CO 3 2− ] (Tyrrell & Zeebe 2004). The decrease in [Ca 2+ ] to around 10 mM in present-day seawater (Tyrrell & Zeebe 2004) and concomitant doubling of [Mg 2+ ] to around 50 mM (Dickson & Goyet 1994), possibly modulated by changes in sulphate concentration, resulted in the alternating 'aragonite ocean' and 'calcite ocean' (Bots et al 2011, Müller et al 2011, Orr 2011, Zeebe & Ridgwell 2011. Over shorter time scales, Rickaby et al (2010a) found that the glacial Southern Ocean had a higher alkalinity than occurs today, with implications for calcification.…”

Section: Coccolithophores In Past and Present Environmentsmentioning

confidence: 99%

“…Trimborn et al (2007) found only naked cells at 0.1 mM [Ca 2+ ]. Experiments with [Ca 2+ ] higher than present-day sea water concentrations (up to 50 mM) and varying Mg 2+ , and hence Ca:Mg ratios (Herfort et al 2004, Stanley et al 2005, Katagiri et al 2010, Müller et al 2011, are relevant to understanding the effects on calcification of the changes in ocean chemistry over the last 220 million years of the fossil record of coccolithophores (Zeebe & Ridgwell 2011 Fig. 2 of Stanley et al 2005).…”

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 99%

“…2 of Stanley et al 2005). Calcification was not quantified, although Katagiri et al (2010) (Müller et al 2011). Herfort et al (2004 and Katagiri et al (2010) both showed that PIC:POC is greatest at [Ca 2+ ] and [Mg 2+ ] similar to present ocean concentrations at the present inorganic carbon concentration, which was the only one examined.…”

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 99%

See 4 more Smart Citations

Environmental controls on coccolithophore calcification

Raven

Crawfurd²

2012

Mar. Ecol. Prog. Ser.

120

107

View full text Add to dashboard Cite

Coccolithophores are major contributors to global marine planktonic calcification, and in nature coccolithophores are invariably calcified through almost all of their life cycle. The response of calcification to environmental factors is essential in understanding the persistence of coccolithophores through at least 220 million years of changing global environments, and their prospects for current environmental change. So far the responses examined have been at the level of acclimation rather than adaptation in evolution. Variation in results of CO 2 manipulation experiments can be tentatively attributed to variation among genotypes rather than differences in experimental procedure. Comparisons of methods using the same genotype, and of several genotypes using a single method, suggest significant variation among genotypes. The general response is a decreased particulate inorganic carbon (PIC) to particulate organic carbon (POC) ratio in higher than present CO 2 concentrations and vice versa for lower CO 2 concentrations. Fewer studies have investigated the effect of other environmental factors. Decreased availability of phosphorus and, to a lesser extent, nitrogen, as well as decreasing photosynthetically active radiation (PAR) down to a certain low value increase PIC:POC, while variable results have been found for changes in ultraviolet radiation (UVR). Many of these results can be accommodated by considering the restriction of calcification to the G1 phase of the cell cycle and the length of this phase under different growth conditions. Fewer studies have investigated the interactions among environmental factors which change with increased CO 2 and increasing sea surface temperature; the shoaling of the thermocline will increase the mean PAR and UVR whilst decreasing nitrogen and phosphorus availability. More studies of these interactions, as well as of genetic adaptation in response to changed environmental factors, are needed.

show abstract

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 88%

Section: Coccolithophores In Past and Present Environmentsmentioning

confidence: 99%

Section: Coccolithophores In Past and Present Environmentsmentioning

confidence: 99%

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 99%

Section: Effects Of Calcium Magnesium and Sulphate On Calcificationmentioning

confidence: 99%

See 3 more Smart Citations

Environmental controls on coccolithophore calcification

Raven

Crawfurd²

2012

Mar. Ecol. Prog. Ser.

120

107

View full text Add to dashboard Cite

show abstract

In Vivo Shaping of Inorganic Functional Devices using Microalgae

2020

View full text Add to dashboard Cite

The usage of biomineralization processes performed by living microalgae to create 3D nanostructured materials are advantageous compared to conventional synthesis routes. Exploitation of in vivo shaping using living cells leads to inorganic intricate biominerals, produced with low environmental impact. Since biomineralization processes are genetically controlled, the formation of nanostructured materials is highly reproducible. The shells of microalgae, like coccoliths, are particularly of great interest. This study shows the generation of mesoporous highly structured functional materials with induced optoelectronical properties using in vivo processes of the microalga species Emiliania huxleyi. It demonstrates the metabolically driven incorporation of the lanthanide terbium into the coccoliths of E. huxleyi as a route for the synthesis of finely patterned photoluminescent particles by feeding the microalgae with this luminescent element. The resulting green luminescent particles have hierarchical ordered pores on the nano‐ and microscale and may act as powerful tools for many applications; they may serve as imaging probes for biomedical applications, or in microoptics. The luminescent coccoliths combine a unique hierarchical structure with a characteristic luminescence pattern, which make them superior to conventional produced Tb doted material. With this study, the possibility of the further exploitation of coccoliths as advanced functional materials for nanotechnological applications is given.

show abstract

Biominerals and Biomaterial

Gussone

Heuser

2016

Calcium Stable Isotope Geochemistry

View full text Add to dashboard Cite

Response of the coccolithophores Emiliania huxleyi and Coccolithus braarudii to changing seawater Mg2+ and Ca2+ concentrations: Mg/Ca, Sr/Ca ratios and δ44/40Ca, δ26/24Mg of coccolith calcite

Cited by 52 publications

References 72 publications

Environmental controls on coccolithophore calcification

Environmental controls on coccolithophore calcification

In Vivo Shaping of Inorganic Functional Devices using Microalgae

Biominerals and Biomaterial

Contact Info

Product

Resources

About