Seawater carbonate chemistry and mechanical properties of shark teeth ...

• Main Authors: Leung, Jonathan, Nagelkerken, Ivan, Pistevos, Jennifer C A, Xie, Zonghan, Zhang, Sam, Connell, Sean D
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Animalia; Biomass/Abundance/Elemental composition; Chordata; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Heterodontus portusjacksoni; Indian Ocean; Laboratory experiment; Nekton; Other studied parameter or process; Pelagos; Single species; Temperate; Temperature; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; DATE/TIME; Identification; Treatment; Temperature, water; pH; Hardness; Elasticity; Mechanical resilience; Percentage; Carbon; Oxygen; Fluorine; Sodium; Magnesium; Phosphorus; Calcium; Ratio; Full width at half maximum; Salinity; Salinity, standard error; pH, standard error; Temperature, water, standard error; Alkalinity, total; Alkalinity, total, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.944930; https://doi.pangaea.de/10.1594/PANGAEA.944930

Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects organisms that have body parts made of calcium phosphate minerals (e.g. shark teeth), which may also be impacted by the 'corrosive' effect of acidified seawater. Thus, we examined the effect of ocean acidification and warming on the mechanical properties of shark teeth (Port Jackson shark, Heterodontus portusjacksoni), and assessed whether their mineralogical properties can be modified in response to predicted near-future seawater pH (–0.3 units) and temperature (+3°C) changes. We found that warming resulted in the production of more brittle teeth (higher elastic modulus and lower mechanical resilience) that were more vulnerable to physical damage. Yet, when combined with ocean acidification, the durability of teeth increased (i.e. less prone to physical damage due to the production of more ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-06-02. ...