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  • Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; CO2 vent; Coast and continental shelf; Density; Density, standard deviation; Field observation; Fraction; Fraction, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Galaxea fascicularis; Growth/Morphology; Location; OA-ICC; Ocean Acidification International Coordination Centre; Organic matrix; Organic matrix, standard deviation; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Pocillopora damicornis; Porites sp.; Porosity; Porosity, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Site; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Tropical; Type; Uniform resource locator/link to reference; Water; Water, standard deviation  (1)
  • Alkalinity, total; Alkalinity, total, standard deviation; Amphistegina radiata; Aragonite saturation state; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; BIOACID; Biological Impacts of Ocean Acidification; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard deviation; Calcium ion; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Chromista; Coast and continental shelf; Coulometric titration; Date; Figure; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Group; Heterostegina depressa; Heterotrophic prokaryotes; Hydrogen ion concentration; Hydrogen ion concentration, standard deviation; Identification; Individual code; Irradiance; Laboratory experiment; Marginopora vertebralis; Miliola sp.; OA-ICC; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Peneroplis sp.; pH; pH, standard deviation; Phosphate; Phosphate, standard deviation; Position; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Quinquelloculina sp.; Revelle factor; Revelle factor, standard deviation; Salinity; Silicate; Silicate, standard deviation; Single species; Size; Slope; Slope, standard deviation; South Pacific; Species; Spectrophotometric; Temperature, water; Temperature, water, standard deviation; Time point, descriptive; Treatment; Tropical  (1)
  • Alkalinity, total; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; CO2 vent; Coast and continental shelf; Diameter; Dobu_A; Dobu_B; Echinodermata; Echinometra sp.; Event label; EXP; Experiment; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Height; Identification; Location; Mass; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Potentiometric; Potentiometric titration; Salinity; Salinity, standard deviation; Single species; Size; South Pacific; Species; Temperature, water; Tropical; Type; Upa-Upasina; Upa-Upasina_control  (1)
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  • 1
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    Unknown
    Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions (2016)
    PANGAEA
    In:  Supplement to: Uthicke, Sven; Ebert, Thomas; Liddy, Michelle; Johansson, Charlotte; Fabricius, Katharina Elisabeth; Lamare, Miles (2016): Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions. Global Change Biology, 22(7), 2451-2461, https://doi.org/10.1111/gcb.13223
    Details
    Publication Date: 2024-03-15
    Description: Rising atmospheric CO2 concentrations will significantly reduce ocean pH during the 21st century (ocean acidification, OA). This may hamper calcification in marine organisms such as corals and echinoderms, as shown in many laboratory-based experiments. Sea urchins are considered highly vulnerable to OA. We studied an Echinometra species on natural volcanic CO2 vents in Papua New Guinea, where they are CO2-acclimatized and also subjected to secondary ecological changes from elevated CO2. Near the vent site, the urchins experienced large daily variations in pH (〉 1 unit) and pCO2 (〉 2000 ppm) and average pH values (pHT 7.73) much below those expected under the most pessimistic future emission scenarios. Growth was measured over a 17-month period using tetracycline tagging of the calcareous feeding lanterns. Average-sized urchins grew more than twice as fast at the vent compared with those at an adjacent control site, and assumed larger sizes at the vent compared to the control site and two other sites at another reef near-by. A small reduction in gonad weight was detected at the vents, but no differences in mortality, respiration, or degree of test calcification were detected between urchins from vent and control populations. Thus, urchins did not only persist but actually 'thrived' under extreme CO2 conditions. We suggest an ecological basis for this response: increased algal productivity under increased pCO2 provided more food at the vent, resulting in higher growth rates. The wider implication of our observation is that laboratory studies on non-acclimatized specimens, which typically do not consider ecological changes, can lead to erroneous conclusions on responses to global change.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; CO2 vent; Coast and continental shelf; Diameter; Dobu_A; Dobu_B; Echinodermata; Echinometra sp.; Event label; EXP; Experiment; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Height; Identification; Location; Mass; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Potentiometric; Potentiometric titration; Salinity; Salinity, standard deviation; Single species; Size; South Pacific; Species; Temperature, water; Tropical; Type; Upa-Upasina; Upa-Upasina_control
    Type: Dataset
    Format: text/tab-separated-values, 17305 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Seawater carbonate chemistry and coral micro‑ and macro‑morphological skeletal properties (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: This study investigates the effects of long-term exposure to OA on skeletal parameters of four tropical zooxanthellate corals naturally living at CO2 seeps and adjacent control sites from two locations (Dobu and Upa Upasina) in the Papua New Guinea underwater volcanic vent system. The seeps are characterized by seawater pH values ranging from 8.0 to about 7.7. The skeletal porosity of Galaxea fascicularis, Acropora millepora, massive Porites, and Pocillopora damicornis was higher (up to ~ 40%, depending on the species) at the seep sites compared to the control sites. Pocillopora damicornis also showed a decrease of micro-density (up to 7%). Thus, further investigations conducted on this species showed an increase of the volume fraction of the larger pores (up to 7%), a decrease of the intraskeletal organic matrix content (up to 15%), and an increase of the intraskeletal water content (up to 59%) at the seep sites. The organic matrix related strain and crystallite size did not vary between seep and control sites. This multi-species study showed a common phenotypic response among different zooxanthellate corals subjected to the same environmental pressures, leading to the development of a more porous skeletal phenotype under OA.
    Keywords: Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; CO2 vent; Coast and continental shelf; Density; Density, standard deviation; Field observation; Fraction; Fraction, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Galaxea fascicularis; Growth/Morphology; Location; OA-ICC; Ocean Acidification International Coordination Centre; Organic matrix; Organic matrix, standard deviation; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Pocillopora damicornis; Porites sp.; Porosity; Porosity, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Site; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Tropical; Type; Uniform resource locator/link to reference; Water; Water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 772 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    The O2, pH and Ca2+ Microenvironment of Benthic Foraminifera in a High CO2 World (2012)
    PANGAEA
    In:  Supplement to: Glas, Martin S; Fabricius, Katharina Elisabeth; de Beer, Dirk; Uthicke, Sven; Gilbert, Jack Anthony (2012): The O2, pH and Ca2+ Microenvironment of Benthic Foraminifera in a High CO2 World. PLoS ONE, 7(11), e50010, https://doi.org/10.1371/journal.pone.0050010
    Details
    Publication Date: 2024-05-22
    Description: Ocean acidification (OA) can have adverse effects on marine calcifiers. Yet, phototrophic marine calcifiers elevate their external oxygen and pH microenvironment in daylight, through the uptake of dissolved inorganic carbon (DIC) by photosynthesis. We studied to which extent pH elevation within their microenvironments in daylight can counteract ambient seawater pH reductions, i.e. OA conditions. We measured the O2 and pH microenvironment of four photosymbiotic and two symbiont-free benthic tropical foraminiferal species at three different OA treatments (~432, 1141 and 2151 µatm pCO2). The O2 concentration difference between the seawater and the test surface (delta O2) was taken as a measure for the photosynthetic rate. Our results showed that O2 and pH levels were significantly higher on photosymbiotic foraminiferal surfaces in light than in dark conditions, and than on surfaces of symbiont-free foraminifera. Rates of photosynthesis at saturated light conditions did not change significantly between OA treatments (except in individuals that exhibited symbiont loss, i.e. bleaching, at elevated pCO2). The pH at the cell surface decreased during incubations at elevated pCO2, also during light incubations. Photosynthesis increased the surface pH but this increase was insufficient to compensate for ambient seawater pH decreases. We thus conclude that photosynthesis does only partly protect symbiont bearing foraminifera against OA.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Amphistegina radiata; Aragonite saturation state; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; BIOACID; Biological Impacts of Ocean Acidification; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard deviation; Calcium ion; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Chromista; Coast and continental shelf; Coulometric titration; Date; Figure; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Group; Heterostegina depressa; Heterotrophic prokaryotes; Hydrogen ion concentration; Hydrogen ion concentration, standard deviation; Identification; Individual code; Irradiance; Laboratory experiment; Marginopora vertebralis; Miliola sp.; OA-ICC; Ocean Acidification International Coordination Centre; Oxygen; Oxygen, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Peneroplis sp.; pH; pH, standard deviation; Phosphate; Phosphate, standard deviation; Position; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Quinquelloculina sp.; Revelle factor; Revelle factor, standard deviation; Salinity; Silicate; Silicate, standard deviation; Single species; Size; Slope; Slope, standard deviation; South Pacific; Species; Spectrophotometric; Temperature, water; Temperature, water, standard deviation; Time point, descriptive; Treatment; Tropical
    Type: Dataset
    Format: text/tab-separated-values, 22899 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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