Characteristic crystal orientation of folia in oyster shell, Crassostrea gigas

Lee, Seung Woo; Kim, Gyeung Ho; Choi, Cheong Song

doi:10.1016/j.msec.2007.01.001

Cited by 34 publications

(45 citation statements)

References 21 publications

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“…The mechanical properties of the shells are determined by the morphology and organization of crystalline laths and by the shell matrix component (Lee et al 2008). Our results clearly show that the exposure of juvenile oysters to hypercapnia had a negative impact on the mechanical properties of their shells.…”

Section: Effects Of Elevated Co 2 On Ultrastructure and Mechanical Prmentioning

confidence: 68%

“…The foliated layer of Crassostrea virginica and other oyster species are multilayered nanomaterials, comprised of thin calcite laths bound together by the extracellular matrix molecules (Checa et al 2007a, Lee et al 2008. The mechanical properties of the shells are determined by the morphology and organization of crystalline laths and by the shell matrix component (Lee et al 2008).…”

Section: Effects Of Elevated Co 2 On Ultrastructure and Mechanical Prmentioning

confidence: 99%

“…Three samples from each treatment group were tested. The fracture toughness (K c ) was determined using Anstis' equation as previously described (Anstis et al 1981, Baldassarri et al 2008, with a Young's modulus value of 73 GPa based on Lee et al (2008). Indentations from 8 control shells and 10 hypercapnic shells were analyzed.…”

Section: Animal Maintenance and Experimental Exposuresmentioning

confidence: 99%

“…A possible explanation for this phenomenon could be a decrease in cell-division rates in mantle tissue (due to the overall decrease in the somatic growth rates) that leads to a slow-down in mantle growth and increase of the time interval for deposition of a single folium. However, at present this mechanism remains speculative and requires further investigation.The foliated layer of Crassostrea virginica and other oyster species are multilayered nanomaterials, comprised of thin calcite laths bound together by the extracellular matrix molecules (Checa et al 2007a, Lee et al 2008. The mechanical properties of the shells are determined by the morphology and organization of crystalline laths and by the shell matrix component (Lee et al 2008).…”

mentioning

confidence: 99%

“…One possible explanation is that in a material with thinner layers, the cracks propagating during its deformation on average will travel shorter distances uninterrupted through the stiff and brittle crystalline layers and interface more often with softer organic rich layers, which will deflect the cracks leading to more treacherous crack paths and hence toughening of the material (Fratzl et al 2007, Zhang et al 2010. Alternatively, lower hardness values of hypercapnic shells can be due to the alterations in the organic matrix (Lee et al 2008); however, currently we do not have the data to support this hypothesis. …”

mentioning

confidence: 99%

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Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Beniash¹,

Ivanina²,

Lieb³

et al. 2010

Mar. Ecol. Prog. Ser.

352

266

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Estuarine organisms are exposed to periodic strong fluctuations in seawater pH driven by biological carbon dioxide (CO 2 ) production, which may in the future be further exacerbated by the ocean acidification associated with the global rise in CO 2 . Calcium carbonate-producing marine species such as mollusks are expected to be vulnerable to acidification of estuarine waters, since elevated CO 2 concentration and lower pH lead to a decrease in the degree of saturation of water with respect to calcium carbonate, potentially affecting biomineralization. Our study demonstrates that the increase in CO 2 partial pressure (pCO 2 ) in seawater and associated decrease in pH within the environmentally relevant range for estuaries have negative effects on physiology, rates of shell deposition and mechanical properties of the shells of eastern oysters Crassostrea virginica (Gmelin). High CO 2 levels (pH~7.5, pCO 2~3 500 µatm) caused significant increases in juvenile mortality rates and inhibited both shell and soft-body growth compared to the control conditions (pH ~8.2, pCO 2 380 µatm). Furthermore, elevated CO 2 concentrations resulted in higher standard metabolic rates in oyster juveniles, likely due to the higher energy cost of homeostasis. The high CO 2 conditions also led to changes in the ultrastructure and mechanical properties of shells, including increased thickness of the calcite laths within the hypostracum and reduced hardness and fracture toughness of the shells, indicating that elevated CO 2 levels have negative effects on the biomineralization process. These data strongly suggest that the rise in CO 2 can impact physiology and biomineralization in marine calcifiers such as eastern oysters, threatening their survival and potentially leading to profound ecological and economic impacts in estuarine ecosystems.KEY WORDS: Hypercapnia · Ocean acidification · Calcification · Shell structure · Energy metabolism · Oxygen consumption · Mollusks Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 419: [95][96][97][98][99][100][101][102][103][104][105][106][107][108] 2010 between 4 and 5 mo in summer and early fall (Cochran & Burnett 1996; see also long-term water pH data for eastern US estuaries at http://cdmo.baruch.sc.edu/). Given that pH is measured on a log scale, even relatively small changes in pH result in a considerable change in concentrations of hydrogen and hydroxide ions, which may have important physiological consequences for the resident biota.The effects of seasonal and diurnal hypercapnia experienced by estuarine organisms are likely to become exacerbated in the coming years due to global climate change and ocean acidification driven by anthropogenically released CO 2 (Caldeira & Wickett 2003. The uptake of atmospheric CO 2 is especially pronounced in surface ocean waters (< 250 m depth), where nearly 50% of anthropogenic CO 2 is absorbed, making near-shore habitats including estuaries vulnerable to ocean acidification (Feely et al. 2008, Doney e...

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Section: Effects Of Elevated Co 2 On Ultrastructure and Mechanical Prmentioning

confidence: 68%

Section: Effects Of Elevated Co 2 On Ultrastructure and Mechanical Prmentioning

confidence: 99%

Section: Animal Maintenance and Experimental Exposuresmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Beniash¹,

Ivanina²,

Lieb³

et al. 2010

Mar. Ecol. Prog. Ser.

352

266

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Parameters affecting mineral trapping of CO₂ sequestration in brines

Liu

Maroto‐Valer

2011

Greenhouse Gases

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Carbon dioxide sequestration using brines has emerged as a promising technology to mitigate the adverse impacts of climate change due to its large storage capacity and favorable chemistries. However, the permanent storage of CO2 in brines takes significantly long periods of time as the formation of carbonates is very slow. This review focuses on the four main parameters (brine composition, brine pH, system temperature, and pressure) that have been reported to have a major effect on mineral trapping of CO2 sequestration in brines. These parameters are difficult to control for in situ underground CO2 sequestration. However, understanding the effects of these main parameters is useful for both aboveground and underground carbonation reactions. Brine pH is the most important parameter. The precipitation of carbonate minerals is favored over a basic pH of 9.0. In order to promote the formation of carbonates, brine pH could be enhanced by using additives. System temperature has a greater effect than pressure. © 2011 Society of Chemical Industry and John Wiley & Sons, Ltd

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Nanoindentation of Supercrystalline Nanocomposites: Linear Relationship Between Elastic Modulus and Hardness

Yan

Bor

Plunkett

et al. 2022

JOM

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Supercrystalline nanocomposites (SCNCs) are a new category of nanostructured materials, with organically functionalized nanoparticles assembled into periodic structures, reminiscent of atomic crystals. Thanks to this nanoarchitecture, SCNCs show great promise for functional applications, and understanding and controlling their mechanical properties becomes key. Nanoindentation is a powerful tool to assess the mechanical behavior of virtually any material, and it is particularly suitable for studies on nanostructured materials. While investigating SCNCs in nanoindentation, a linear proportionality has emerged between elastic modulus and hardness. This is not uncommon in nanoindentation studies, and here we compare and contrast the behavior of SCNCs with that of other material categories that share some of the key features of SCNCs: mineral-rich biocomposites (where mineral building blocks are packed into a protein-interfaced network), ultrafine grained materials (where the characteristic nano-grain sizes are analogous to those of the SCNC building blocks), and face-centered cubic atomic crystals (which share the typical SCNC periodic structure). A strong analogy emerges with biomaterials, both in terms of the hardness/elastic modulus relationship, and of the correlation between this ratio and the dissipative mechanisms occurring upon material deformation. Insights into the suitability of SCNCs as building blocks of the next-generation hierarchical materials are drawn.

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Characteristic crystal orientation of folia in oyster shell, Crassostrea gigas

Cited by 34 publications

References 21 publications

Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Parameters affecting mineral trapping of CO₂ sequestration in brines

Nanoindentation of Supercrystalline Nanocomposites: Linear Relationship Between Elastic Modulus and Hardness

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Characteristic crystal orientation of folia in oyster shell, Crassostrea gigas

Cited by 34 publications

References 21 publications

Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica (Gmelin)

Parameters affecting mineral trapping of CO2 sequestration in brines

Nanoindentation of Supercrystalline Nanocomposites: Linear Relationship Between Elastic Modulus and Hardness

Contact Info

Product

Resources

About

Parameters affecting mineral trapping of CO₂ sequestration in brines