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  • 1
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    PANGAEA
    In:  Supplement to: D'Olivo, Juan Pablo; Georgiou, Lucy; Falter, James L; DeCarlo, Thomas M; Irigoien, Xabier; Voolstra, Christian R; Roder, Cornelia; Trotter, Julie; McCulloch, Malcolm T (2019): Long‐Term Impacts of the 1997–1998 Bleaching Event on the Growth and Resilience of Massive Porites Corals From the Central Red Sea. Geochemistry, Geophysics, Geosystems, 20(6), 2936-2954, https://doi.org/10.1029/2019GC008312
    Publication Date: 2023-01-30
    Description: Near monthly records of trace element ratios (Mg/Ca, Sr/Ca, U/Ca, Li/Mg, B/Ca and Li/Ca) for two cores of Porites corals from the inshore reef of Abu Shosha (approximately 1994-2013) and the outer-shelf reef Shi'b Nazar (approximately 1991-2013) near Thuwal in the central Red Sea. Data analysed by inductively coupled plasma masss spectrometer (ICP-MS).
    Keywords: Bleaching; Coral; Li/Mg; Porites; Red Sea; Sr/Ca; trace elements
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
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    PANGAEA
    In:  Supplement to: D'Olivo, Juan Pablo; Ellwood, George; DeCarlo, Thomas M; McCulloch, Malcolm T (2019): Deconvolving the long-term impacts of ocean acidification and warming on coral biomineralisation. Earth and Planetary Science Letters, 526, 115785, https://doi.org/10.1016/j.epsl.2019.115785
    Publication Date: 2023-01-30
    Description: Identifying the long-term effects of ocean acidification (OA) and global warming on coral calcification has proven elusive yet has major implications for the continuing viability of coral reefs in the face of climate change. Here we address this question using seasonally and annually resolved boron proxies (11B/10B and B/Ca) of calcifying fluid (cf) pHcf and carbonate ion concentrations ([CO]cf) preserved in a long-lived Porites coral from the Great Barrier Reef (GBR). From 1939 to 2013 we find that the coral pHcf closely followed the decline in seawater pH of ∼0.1 units, but at a reduced rate of ∼60%, indicative of biological buffering. Of the decline in pHcf ∼82% is attributed to OA and ∼17% to the ∼0.5 °C long-term warming observed over this period. This long-term warming induced change in pHcf is consistent with the much larger seasonally modulated changes in pHcf where ∼4 to 6 °C seasonal changes in temperatures are accompanied by relatively large antithetic ∼0.1 changes in pHcf. Furthermore, we find that although the supply of dissolved inorganic carbon (DIC) of the coral cf has remained at constant elevated levels of ∼1.5 × seawater, there has been a significant long-term decline (4 to 11%) in the [CO]cf, due primarily to the OA-induced change in pHcf. This decline in [CO]cf, a critical parameter controlling calcification, is thus likely responsible for the ∼15% decline in coral calcification observed since 1939 and across the GBR generally.
    Keywords: boron isotopes; calcification; Coral; Geochemistry; Ocean acidification; Porites
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 3
    Publication Date: 2023-02-12
    Keywords: Bleaching; Central Red Sea; Coral; Core; CORE; DATE/TIME; DISTANCE; ICP-MS; Li/Mg; Porites; Porites lutea, Boron/Calcium ratio; Porites lutea, Boron/Magnesium ratio; Porites lutea, Lithium/Calcium ratio; Porites lutea, Lithium/Magnesium ratio; Porites lutea, Magnesium/Calcium ratio; Porites lutea, Strontium/Calcium ratio; Porites lutea, Uranium/Calcium ratio; Red Sea; Sample ID; Sr/Ca; Thuwal-RED4; trace elements
    Type: Dataset
    Format: text/tab-separated-values, 1520 data points
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  • 4
    Publication Date: 2023-02-12
    Keywords: Bleaching; Central Red Sea; Coral; Core; CORE; DATE/TIME; DISTANCE; ICP-MS; Li/Mg; Porites; Porites australiensis, Boron/Calcium ratio; Porites australiensis, Boron/Magnesium ratio; Porites australiensis, Lithium/Calcium ratio; Porites australiensis, Lithium/Magnesium ratio; Porites australiensis, Magnesium/Calcium ratio; Porites australiensis, Strontium/Calcium ratio; Porites australiensis, Uranium/Calcium ratio; Red Sea; Sample ID; Sr/Ca; Thuwal-RED2; trace elements
    Type: Dataset
    Format: text/tab-separated-values, 1593 data points
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  • 5
    Publication Date: 2023-02-12
    Keywords: Age; AGE; Boron-11/Boron-10 ratio; boron isotopes; calcification; COC; Coral; Coral core; Density; DISTANCE; Geochemistry; Linear extension; LIZ13_1; Lizard Island, northern Great Barrier Reef; Month; Ocean acidification; Porites; Porites australiensis, Boron/Calcium ratio; Porites australiensis, Strontium/Calcium ratio; Years
    Type: Dataset
    Format: text/tab-separated-values, 928 data points
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  • 6
    Publication Date: 2023-02-12
    Keywords: Age; AGE; Boron-11/Boron-10 ratio; boron isotopes; calcification; COC; Coral; Coral core; Density; DISTANCE; Geochemistry; Linear extension; LIZ13_1; Lizard Island, northern Great Barrier Reef; Month; Ocean acidification; Porites; Porites australiensis, Boron/Calcium ratio; Porites australiensis, Strontium/Calcium ratio; Years
    Type: Dataset
    Format: text/tab-separated-values, 472 data points
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  • 7
    Publication Date: 2023-02-12
    Keywords: Age; AGE; Boron-11/Boron-10 ratio; boron isotopes; calcification; COC; Coral; Coral core; Density; DISTANCE; Geochemistry; Linear extension; LIZ13_1; Lizard Island, northern Great Barrier Reef; Ocean acidification; Porites; Porites australiensis, Boron/Calcium ratio; Porites australiensis, Strontium/Calcium ratio
    Type: Dataset
    Format: text/tab-separated-values, 456 data points
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  • 8
    Publication Date: 2023-02-12
    Keywords: Age; AGE; Boron-11/Boron-10 ratio; boron isotopes; calcification; COC; Coral; Coral core; Density; DISTANCE; Geochemistry; Linear extension; LIZ13_1; Lizard Island, northern Great Barrier Reef; Month; Ocean acidification; Porites; Porites australiensis, Boron/Calcium ratio; Porites australiensis, Strontium/Calcium ratio; Years
    Type: Dataset
    Format: text/tab-separated-values, 256 data points
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  • 9
    Publication Date: 2024-03-15
    Description: High-latitude coral reefs provide natural laboratories for investigating the mechanisms and limits of coral calcification. While the calcification processes of tropical corals have been studied intensively, little is known about how their temperate counterparts grow under much lower temperature and light conditions. Here, we report the results of a long-term (2-year) study of seasonal changes in calcification rates, photo-physiology and calcifying fluid (cf) chemistry (using boron isotope systematics and Raman spectroscopy) for the coral Turbinaria reniformis growing near its latitudinal limits (34.5° S) along the southern coast of Western Australia. In contrast with tropical corals, calcification rates were found to be threefold higher during winter (16 to 17° C) compared with summer (approx. 21° C), and negatively correlated with light, but lacking any correlation with temperature. These unexpected findings are attributed to a combination of higher chlorophyll a, and hence increased heterotrophy during winter compared with summer, together with the corals' ability to seasonally modulate pHcf, with carbonate ion concentration [CO32-]cf being the main controller of calcification rates. Conversely, calcium ion concentration [Ca2+]cf declined with increasing calcification rates, resulting in aragonite saturation states Ωcf that were stable yet elevated fourfold above seawater values. Our results show that corals growing near their latitudinal limits exert strong physiological control over their cf in order to maintain year-round calcification rates that are insensitive to the unfavourable temperature regimes typical of high-latitude reefs.
    Keywords: Acid-base regulation; Alkalinity, total; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Boron/Calcium ratio; Bremer_Bay; Calcification/Dissolution; Calcification rate; Calcification rate, standard error; Calcifying fluid, aragonite saturation state; Calcifying fluid, carbonate ion; Calcifying fluid, dissolved inorganic carbon; Calcite saturation state; Calcium; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; Coast and continental shelf; Coelomic fluid, pH; DATE/TIME; EXP; Experiment; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Indian Ocean; Location; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Photochemical efficiency; Photochemical efficiency, standard error; Primary production/Photosynthesis; Ratio; Registration number of species; Salinity; Single species; Site; Species; Temperate; Temperature, relative; Temperature, water; Turbinaria reniformis; Type; Uniform resource locator/link to reference; δ11B
    Type: Dataset
    Format: text/tab-separated-values, 583 data points
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  • 10
    Publication Date: 2024-03-15
    Description: Natural variability in pH in the diffusive boundary layer (DBL), the discrete layer of seawater between bulk seawater and the outer surface of organisms, could be an important factor determining the response of corals and coralline algae to ocean acidification (OA). Here, two corals with different morphologies and one coralline alga were maintained under two different regimes of flow velocities, pH, and light intensities in a 12 flumes experimental system for a period of 27 weeks. We used a combination of geochemical proxies, physiological and micro-probe measurements to assess how these treatments affected the conditions in the DBL and the response of organisms to OA. Overall, low flow velocity did not ameliorate the negative effect of low pH and therefore did not provide a refugia from OA. Flow velocity had species-specific effects with positive effects on calcification for two species. pH in the calcifying fluid (pHcf) was reduced by low flow in both corals at low light only. pHcf was significantly impacted by pH in the DBL for the two species capable of significantly modifying pH in the DBL. The dissolved inorganic carbon in the calcifying fluid (DICcf) was highest under low pH for the corals and low flow for the coralline, while the saturation state in the calcifying fluid and its proxy (FWHM) were generally not affected by the treatments. This study therefore demonstrates that the effects of OA will manifest most severely in a combination of lower light and lower flow habitats for sub-tropical coralline algae. These effects will also be greatest in lower flow habitats for some corals. Together with existing literature, these findings reinforce that the effects of OA are highly context dependent, and will differ greatly between habitats, and depending on species composition.
    Keywords: Acid-base regulation; Acropora yongei; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Boron/Calcium ratio; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcifying fluid, aragonite saturation state; Calcifying fluid, carbonate ion; Calcifying fluid, dissolved inorganic carbon; Calcifying fluid, pH; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Full width at half maximum; Identification; Indian Ocean; Laboratory experiment; Light; Macroalgae; Magnesium-Calcite; Maximal differences in pH; Name; Net photosynthesis rate, oxygen; OA-ICC; Ocean Acidification International Coordination Centre; Other; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Plantae; Plesiastrea versipora; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Raman microscopy; Registration number of species; Respiration; Respiration rate, oxygen; Rhodophyta; Salinity; Salmon_Bay; Single species; Species; Sporolithon durum; Temperate; Temperature, water; Temperature, water, standard deviation; Treatment; Type; Uniform resource locator/link to reference; δ11B
    Type: Dataset
    Format: text/tab-separated-values, 11028 data points
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