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  • PANGAEA  (23)
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  • 1
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    Seawater carbonate chemistry and zooxanthellate coral Cladocora caespitosa boron isotopic and elemental systematics during experiments, 2011 (2011)
    PANGAEA
    In:  Supplement to: Trotter, Julie; Montagna, Paolo; McCulloch, Malcolm T; Silenzi, Sergio; Reynaud, Stéphanie; Mortimer, Graham; Martin, Sophie; Ferrier-Pagès, Christine; Gattuso, Jean-Pierre; Rodolfo-Metalpa, Riccardo (2011): Quantifying the pH 'vital effect' in the temperate zooxanthellate coral Cladocora caespitosa: Validation of the boron seawater pH proxy. Earth and Planetary Science Letters, 303, 163-173, https://doi.org/10.1016/j.epsl.2011.01.030
    Details
    Publication Date: 2023-03-14
    Description: Boron isotopic and elemental systematics are used to define the vital effects for the temperate shallow water Mediterranean coral Cladocora caespitosa. The corals are from a range of seawater pH conditions (pHT ~ 7.6 to ~ 8.1) and environmental settings: (1) naturally living colonies harvested from normal pH waters offshore Levanto, (2) colonies transplanted nearby a subsea volcanic vent system, and (3) corals cultured in aquaria exposed to high (700 µatm) and near present day (400 µatm) pCO2 levels. B/Ca compositions measured using laser ablation inductively coupled mass spectrometry (LA-ICPMS) show that boron uptake by C. caespitosa cultured at different pCO2 levels is independent of ambient seawater pH being mainly controlled by temperature-dependent calcification. In contrast, the boron isotope compositions (delta11Bcarb) of the full suite of corals determined by positive thermal ionisation mass spectrometry (PTIMS) shows a clear trend of decreasing delta11Bcarb (from 26.7 to 22.2 %o) with decreasing seawater pH, reflecting the strong pH dependence of the boron isotope system. The delta11Bcarb compositions together with measurements of ambient seawater parameters enable calibration of the boron pH proxy for C. caespitosa, by using a new approach that defines the relationship between ambient seawater pH (pHsw) and the internally controlled pH at the site of calcification (pHbiol). C. caespitosa exhibits a linear relationship between pHsw and the shift in pH due to physiological processes (deltapH = pHbiol - pHsw) giving the regression deltapHClad = 4.80 - 0.52* pHsw for this species. We further apply this method ("deltapH-pHsw") to calibrate tropical species of Porites, Acropora, and Stylophora reported in the literature. The temperate and tropical species calibrations are all linearly correlated (r2 〉 0.9) and the biological fractionation component (deltapH) between species varies within ~ 0.2 pH units. Our "deltapH-pHsw" approach provides a robust and accurate tool to reconstruct palaeoseawater pHsw for both temperate and tropical corals, further validating the boron fractionation factor (alphaB3-B4 = 1.0272) determined experimentally by Klochko et al. (2006) and the boron isotope pH proxy, both of which have been the foci of considerable debate.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Boron/Calcium ratio; Boron hydroxide/Bicarbonate ratio; Calculated, see reference(s); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Carbon dioxide, standard deviation; DATE/TIME; DISTANCE; EPOCA; European Project on Ocean Acidification; Experimental treatment; Measured; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; pH meter (Metrohm, 826 pH mobile); Salinity; see reference(s); Site; Species; Temperature, standard deviation; Temperature, water; Titration potentiometric; δ11B
    Type: Dataset
    Format: text/tab-separated-values, 29568 data points
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  • 2
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    Seawater carbonate chemistry and sea urchin Paracentrotus lividus biological processes during experiments, 2011 (2011)
    PANGAEA
    In:  Supplement to: Martin, Sophie; Richier, Sophie; Pedrotti, Maria Luiza; Dupont, Sam; Castejon, Charlotte; Gerakis, Yannis; Kerros, Marie-Emmanuelle; Oberhänsli, F; Teyssié, Jean-Louis; Jeffree, Ross; Gattuso, Jean-Pierre (2011): Early development and molecular plasticity in the Mediterranean sea urchin Paracentrotus lividus exposed to CO2-driven acidification. Journal of Experimental Biology, 214(8), 1357-1368, https://doi.org/10.1242/jeb.051169
    Details
    Publication Date: 2023-03-14
    Description: Ocean acidification is predicted to have significant effects on benthic calcifying invertebrates, in particular on their early developmental stages. Echinoderm larvae could be particularly vulnerable to decreased pH, with major consequences for adult populations. The objective of this study was to understand how ocean acidification would affect the initial life stages of the sea urchin Paracentrotus lividus, a common species that is widely distributed in the Mediterranean Sea and the NE Atlantic. The effects of decreased pH (elevated PCO2) were investigated through physiological and molecular analyses on both embryonic and larval stages. Eggs and larvae were reared in Mediterranean seawater at six pH levels, i.e. pHT 8.1, 7.9, 7.7, 7.5, 7.25 and 7.0. Fertilization success, survival, growth and calcification rates were monitored over a 3 day period. The expression of genes coding for key proteins involved in development and biomineralization was also monitored. Paracentrotus lividus appears to be extremely resistant to low pH, with no effect on fertilization success or larval survival. Larval growth was slowed when exposed to low pH but with no direct impact on relative larval morphology or calcification down to pHT 7.25. Consequently, at a given time, larvae exposed to low pH were present at a normal but delayed larval stage. More surprisingly, candidate genes involved in development and biomineralization were upregulated by factors of up to 26 at low pH. Our results revealed plasticity at the gene expression level that allows a normal, but delayed, development under low pH conditions.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Asymmetrical; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Coast and continental shelf; DATE/TIME; Echinodermata; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fertilization success rate; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Incubation duration; Laboratory experiment; Mediterranean Sea; Metrohm 665 Dosimat titrator; OA-ICC; Ocean Acidification International Coordination Centre; Optical microscopy; Paracentrotus lividus; Paracentrotus lividus, length; Paracentrotus lividus, rod size; Paracentrotus lividus, size, antero-lateral arms; Paracentrotus lividus, size, post-oral arms; Paracentrotus lividus, uptake, calcium, standard deviation; Paracentrotus lividus, uptake rate per larvae, calcium; Paracentrotus lividus, width; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; pH meter (Metrohm, 826 pH mobile); Reproduction; Salinity; Sample ID; see reference(s); Single species; Symmetry index; Temperate; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 16248 data points
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  • 3
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    Seawater carbonate chemistry and trace element accumulation during experiments with common cuttlefish, Sepia officinalis, 2009
    PANGAEA
    In:  Supplement to: Lacoue-Labarthe, Thomas; Martin, Sophie; Oberhänsli, F; Teyssié, Jean-Louis; Markich, S; Ross, J; Bustamante, Paco (2009): Effects of increased pCO2 and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish,Sepia officinalis. Biogeosciences, 6(11), 2561-2673, https://doi.org/10.5194/bg-6-2561-2009
    Details
    Publication Date: 2023-05-12
    Description: Cephalopods play a key role in many marine trophic networks and constitute alternative fisheries resources, especially given the ongoing decline in finfish stocks. Along the European coast, the eggs of the cuttlefish Sepia officinalis are characterized by an increasing permeability of the eggshell during development, which leads to selective accumulation of essential and non-essential elements in the embryo. Temperature and pH are two critical factors that affect the metabolism of marine organisms in the coastal shallow waters. In this study, we investigated the effects of pH and temperature through a crossed (3?2; pH 8.1 (pCO2, 400 ppm), 7.85 (900 ppm) and 7.6 (1400 ppm) at 16 and 19°C, respectively) laboratory experiment. Seawater pH showed a strong effect on the egg weight and non-significant impact on the weight of hatchlings at the end of development implying an egg swelling process and embryo growth disturbances. The lower the seawater pH, the more 110 mAg was accumulated in the tissues of hatchlings. The 109Cd concentration factor (CF) decreased with decreasing pH and 65Zn CF reached maximal values pH 7.85, independently of temperature. Our results suggest that pH and temperature affected both the permeability properties of the eggshell and embryonic metabolism. To the best of our knowledge, this is one of the first studies on the consequences of ocean acidification and ocean warming on metal uptake in marine organisms, and our results indicate the need to further evaluate the likely ecotoxicological impact of the global change on the early-life stages of the cuttlefish.
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Alkalinity, total, standard deviation; Americium-241, activity, normalized; Americium-241, activity, normalized, Sepia officinalis, eggs; Americium-241, activity, standard, Sepia officinalis, eggs; Americium-241, activity, total, Sepia officinalis, eggs; Americium-241, concentration factors; Americium-241, load-concentration ratio; Animalia; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Cadmium-109, activity, normalized; Cadmium-109, activity, normalized, Sepia officinalis, eggs; Cadmium-109, activity, standard, Sepia officinalis, eggs; Cadmium-109, activity, total, Sepia officinalis, eggs; Cadmium-109, concentration factors; Cadmium-109, load-concentration ratio; Caesium-134, activity, normalized; Caesium-134, activity, normalized, Sepia officinalis, eggs; Caesium-134, activity, standard, Sepia officinalis, eggs; Caesium-134, activity, total, Sepia officinalis, eggs; Caesium-134, concentration factors; Caesium-134, load-concentration ratio; Calcite saturation state; Calculated using seacarb; Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Cobalt-60, activity, normalized; Cobalt-60, activity, normalized, Sepia officinalis, eggs; Cobalt-60, activity, standard, Sepia officinalis, eggs; Cobalt-60, activity, total, Sepia officinalis, eggs; Cobalt-60, concentration factors; Cobalt-60, load-concentration ratio; DATE/TIME; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Experiment day; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gamma-ray spectrometry; Identification; Laboratory experiment; Manganese-54, activity, normalized; Manganese-54, activity, normalized, Sepia officinalis, eggs; Manganese-54, activity, standard, Sepia officinalis, eggs; Manganese-54, activity, total, Sepia officinalis, eggs; Manganese-54, concentration factors; Manganese-54, load-concentration ratio; Mediterranean Sea; Mollusca; Nekton; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter (Metrohm, 826 pH mobile); Salinity; see reference(s); Selenium-75, activity, normalized; Selenium-75, activity, normalized, Sepia officinalis, eggs; Selenium-75, activity, standard, Sepia officinalis, eggs; Selenium-75, activity, total, Sepia officinalis, eggs; Selenium-75, concentration factors; Selenium-75, load-concentration ratio; Sepia officinalis; Sepia officinalis, eggs, mass, fresh; Sepia officinalis, juvenile, mass, fresh; Silver-110m, activity, normalized; Silver-110m, activity, normalized, Sepia officinalis, eggs; Silver-110m, activity, standard, Sepia officinalis, eggs; Silver-110m, activity, total, Sepia officinalis, eggs; Silver-110m, concentration factors; Silver-110m, load-concentration ratio; Single species; Temperate; Temperature; Temperature, water; Zinc-65, activity, normalized; Zinc-65, activity, normalized, Sepia officinalis, eggs; Zinc-65, activity, standard, Sepia officinalis, eggs; Zinc-65, activity, total, Sepia officinalis, eggs; Zinc-65, concentration factors; Zinc-65, load-concentration ratio
    Type: Dataset
    Format: text/tab-separated-values, 4149 data points
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  • 4
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    (Supplemental table 2A) Seawater carbonate chemistry in Ischia, Italy, 18 April to 9 May 2007
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Carbon, inorganic, dissolved; Carbonate ion; Carbon dioxide; EPOCA; European Project on Ocean Acidification; Hall-Spencer_etal_08_ST2A; Measured; Mediterranean Sea; OBSE; Observation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH meter (YSI/25 FT); Salinity; Site; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2616 data points
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  • 5
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    (Supplemental table 5) Seawater carbonate chemistry in Ischia, Italy, 24-27 April 2008
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Carbon, inorganic, dissolved; Carbonate ion; Carbon dioxide; Date; EPOCA; European Project on Ocean Acidification; Hall-Spencer_etal_08_ST5; Measured; Mediterranean Sea; OBSE; Observation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH meter (YSI/25 FT); Salinity; Site; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1625 data points
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    DATA PANGAEA
  • 6
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    Seawater carbonate chemistry in Ischia, Italy, 2008
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Description: The atmospheric partial pressure of carbon dioxide (pCO2) will almost certainly be double that of pre-industrial levels by 2100 and will be considerably higher than at any time during the past few million years1. The oceans are a principal sink for anthropogenic CO2 where it is estimated to have caused a 30% increase in the concentration of H+ in ocean surface waters since the early 1900s and may lead to a drop in seawater pH of up to 0.5 units by 2100. Our understanding of how increased ocean acidity may affect marine ecosystems is at present very limited as almost all studies have been in vitro, short-term, rapid perturbation experiments on isolated elements of the ecosystem4, 5. Here we show the effects of acidification on benthic ecosystems at shallow coastal sites where volcanic CO2 vents lower the pH of the water column. Along gradients of normal pH (8.1-8.2) to lowered pH (mean 7.8-7.9, minimum 7.4-7.5), typical rocky shore communities with abundant calcareous organisms shifted to communities lacking scleractinian corals with significant reductions in sea urchin and coralline algal abundance. To our knowledge, this is the first ecosystem-scale validation of predictions that these important groups of organisms are susceptible to elevated amounts of pCO2. Sea-grass production was highest in an area at mean pH 7.6 (1,827 µatm pCO2) where coralline algal biomass was significantly reduced and gastropod shells were dissolving due to periods of carbonate sub-saturation. The species populating the vent sites comprise a suite of organisms that are resilient to naturally high concentrations of pCO2 and indicate that ocean acidification may benefit highly invasive non-native algal species. Our results provide the first in situ insights into how shallow water marine communities might change when susceptible organisms are removed owing to ocean acidification.
    Keywords: EPOCA; European Project on Ocean Acidification; Hall-Spencer_etal_08_ST2A; Hall-Spencer_etal_08_ST5; Mediterranean Sea; OBSE; Observation
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 7
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    Seawater carbonate chemistry and calcification during experiments with maerl beds, 2007 (2007)
    PANGAEA
    In:  Supplement to: Martin, Sophie; Clavier, Jacques; Chauvaud, Laurent; Thouzeau, Gérard (2007): Community metabolism in temperate maerl beds. I. Carbon and carbonate fluxes. Marine Ecology Progress Series, 335, 19-29, https://doi.org/10.3354/meps335019
    Details
    Publication Date: 2024-03-15
    Description: Maerl community respiration, photosynthesis and calcification were measured seasonally in the Bay of Brest (France). The dynamics of oxygen, carbon and carbonate fluxes at the water-sediment interface were assessed using benthic chambers. Community respiration (CR) fluctuated in accordance with the seasonal changes in water temperature, from 1.5 mmol C m**-2 h**-1 in winter to 8.7 mmol C m**-2 h**-1 in summer. Mean gross community production (GCP) varied significantly among seasons, according to incident irradiance and temperature, from 3.4 mmol C m**-2 h**-1 in winter to 12.7 mmol C m-2 h-1 in summer. Mean annual Pmax for the P-E curve was estimated to 13.3 mmol C m-2 h-1. Carbonate precipitation only occurred during light incubations and varied seasonally from 0.7 mmol CaCO3 m-2 h-1 in winter to 4.2 mmol CaCO3 m-2 h-1 in summer. Mean annual Pmax was 3.2 mmol CaCO3 m-2 h-1. Annual CR was estimated to 407.4 g C m**-2 yr**-1, and GCP, to 240.9 g C m**-2 yr**-1. Maerl communities are, therefore, heterotrophic systems (GCP:CR = 0.6), and are a source of CO2 for surrounding environments. In addition, CO2 released by calcification averaged 39.2 g C m**-2 yr**-1. Maerl community annual carbonate production was estimated to 486.7 g CaCO3 m**-2 yr**-1; they are therefore one of the most important carbonate producers in shallow coastal waters.
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Alkalinity anomaly technique (Smith and Key, 1975); Aragonite saturation state; Benthos; Bicarbonate ion; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Date; DEPTH, water; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LICOR quantameter (LI-COR LI-192SA); Martin_etal_07; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH meter (Radiometer, PHM, 240); Radiation, photosynthetically active; Salinity; Sample ID; Soft-bottom community; Temperate; Temperature, water; YSI 6920 salinity/conductivity/temperature meter
    Type: Dataset
    Format: text/tab-separated-values, 1853 data points
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  • 8
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    Seawater carbonate chemistry, calcification, primary production and respiration of a temperate rhodolith Lithothamnion corallioides in a laboratory experiment (2013)
    PANGAEA
    In:  Supplement to: Noisette, Fanny; Duong, Gwendoline; Six, Christophe; Davoult, Dominique; Martin, Sophie (2013): Effects of elevated pCO2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures. Journal of Phycology, 49(4), 746-757, https://doi.org/10.1111/jpy.12085
    Details
    Publication Date: 2024-03-15
    Description: Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated pCO2 on the metabolism of the free-living coralline alga Lithothamnion corallioides ("maerl") and the interactions with changes in temperature. Specimens were collected in North Brittany (France) and grown for 3 months at pCO2 of 380 (ambient pCO2), 550, 750, and 1000 µatm (elevated pCO2) and at successive temperatures of 10°C (ambient temperature in winter), 16°C (ambient temperature in summer), and 19°C (ambient temperature in summer +3°C). At each temperature, gross primary production, respiration (oxygen flux), and calcification (alkalinity flux) rates were assessed in the light and dark. Pigments were determined by HPLC. Chl a, carotene, and zeaxanthin were the three major pigments found in L. corallioides thalli. Elevated pCO2 did not affect pigment content while temperature slightly decreased zeaxanthin and carotene content at 10°C. Gross production was not affected by temperature but was significantly affected by pCO2 with an increase between 380 and 550 µatm. Light, dark, and diel (24 h) calcification rates strongly decreased with increasing pCO2 regardless of the temperature. Although elevated pCO2 only slightly affected gross production in L. corallioides, diel net calcification was reduced by up to 80% under the 1,000 µatm treatment. Our findings suggested that near future levels of CO2 will have profound consequences for carbon and carbonate budgets in rhodolith beds and for the sustainability of these habitats.
    Keywords: Alkalinity, total; Alkalinity, total, standard error; Alkalinity anomaly technique (Smith and Key, 1975); Aquarium number; Aragonite saturation state; Aragonite saturation state, standard error; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carotene; Chlorophyll a; Coast and continental shelf; EPOCA; European Project on Ocean Acidification; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Irradiance; Laboratory experiment; Lithothamnion corallioides; Macroalgae; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; 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; pH; pH, standard error; Plantae; Potentiometric; Primary production/Photosynthesis; Replicates; Respiration; Respiration rate, oxygen; Rhodophyta; Roscanvel; Salinity; Salinity, standard error; Single species; Species; Temperate; Temperature; Temperature, water; Temperature, water, standard error; Zeaxanthin
    Type: Dataset
    Format: text/tab-separated-values, 5796 data points
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  • 9
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    Seawater carbonate chemistry, the abiotic conditions in the fluid surrounding the embryo, growth, calcification of the cuttlefish Sepia officinalis in a laboratory experiment (2013)
    PANGAEA
    In:  Supplement to: Dorey, Narimane; Melzner, Frank; Martin, Sophie; Oberhänsli, F; Teyssié, Jean-Louis; Bustamante, Paco; Gattuso, Jean-Pierre; Lacoue-Labarthe, Thomas (2012): Ocean acidification and temperature rise: effects on calcification during early development of the cuttlefish Sepia officinalis. Marine Biology, 160(8), 2007-2022, https://doi.org/10.1007/s00227-012-2059-6
    Details
    Publication Date: 2024-03-15
    Description: This study investigated the effects of seawater pH (i.e., 8.10, 7.85 and 7.60) and temperature (16 and 19 °C) on (a) the abiotic conditions in the fluid surrounding the embryo (viz. the perivitelline fluid), (b) growth, development and (c) cuttlebone calcification of embryonic and juvenile stages of the cephalopod Sepia officinalis. Egg swelling increased in response to acidification or warming, leading to an increase in egg surface while the interactive effects suggested a limited plasticity of the swelling modulation. Embryos experienced elevated pCO2 conditions in the perivitelline fluid (〉3-fold higher pCO2 than that of ambient seawater), rendering the medium under-saturated even under ambient conditions. The growth of both embryos and juveniles was unaffected by pH, whereas 45Ca incorporation in cuttlebone increased significantly with decreasing pH at both temperatures. This phenomenon of hypercalcification is limited to only a number of animals but does not guarantee functional performance and calls for better mechanistic understanding of calcification processes.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, perivitelline fluid; Aragonite saturation state, perivitelline fluid, standard deviation; Aragonite saturation state, standard deviation; Bicarbonate ion; Body mass, dry; Body mass, dry, standard deviation; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcium-45 content per skeleton element; Calcium-45 content per skeleton element, standard deviation; Calculated using seacarb; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Cuttlebone weight, dry; Cuttlebone weight, dry, standard deviation; Eggs weight, fresh; Eggs weight, fresh, standard deviation; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Laboratory experiment; Mediterranean Sea; Mollusca; Nekton; OA-ICC; Ocean Acidification International Coordination Centre; Oxygen, partial pressure, perivitelline fluid; Oxygen, partial pressure, perivitelline fluid, standard deviation; Partial pressure of carbon dioxide, perivitelline fluid; Partial pressure of carbon dioxide, perivitelline fluid, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, perivitelline fluid; pH, perivitelline fluid, standard deviation; pH, standard deviation; Potentiometric; Potentiometric titration; Reproduction; Salinity; Sepia officinalis; Single species; Species; Temperate; Temperature; Temperature, water; Temperature, water, standard deviation; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 420 data points
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  • 10
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    Does Encapsulation Protect Embryos from the Effects of Ocean Acidification? The Example of Crepidula fornicata (2014)
    PANGAEA
    In:  Supplement to: Noisette, Fanny; Comtet, Thierry; Legrand, Erwann; Bordeyne, Francois; Davoult, Dominique; Martin, Sophie (2014): Does Encapsulation Protect Embryos from the Effects of Ocean Acidification? The Example of Crepidula fornicata. PLoS ONE, 9(3), e93021, https://doi.org/10.1371/journal.pone.0093021
    Details
    Publication Date: 2024-03-15
    Description: Early life history stages of marine organisms are generally thought to be more sensitive to environmental stress than adults. Although most marine invertebrates are broadcast spawners, some species are brooders and/or protect their embryos in egg or capsules. Brooding and encapsulation strategies are typically assumed to confer greater safety and protection to embryos, although little is known about the physico-chemical conditions within egg capsules. In the context of ocean acidification, the protective role of encapsulation remains to be investigated. To address this issue, we conducted experiments on the gastropod Crepidula fornicata. This species broods its embryos within capsules located under the female and veliger larvae are released directly into the water column. C. fornicata adults were reared at the current level of CO2 partial pressure (pCO2) (390 µatm) and at elevated levels (750 and 1400 µatm) before and after fertilization and until larval release, such that larval development occurred entirely at a given pCO2. The pCO2 effects on shell morphology, the frequency of abnormalities and mineralization level were investigated on released larvae. Shell length decreased by 6% and shell surface area by 11% at elevated pCO2 (1400 µatm). The percentage of abnormalities was 1.5- to 4-fold higher at 750 µatm and 1400 µatm pCO2, respectively, than at 390 µatm. The intensity of birefringence, used as a proxy for the mineralization level of the larval shell, also decreased with increasing pCO2. These negative results are likely explained by increased intracapsular acidosis due to elevated pCO2 in extracapsular seawater. The encapsulation of C. fornicata embryos did not protect them against the deleterious effects of a predicted pCO2 increase. Nevertheless, C. fornicata larvae seemed less affected than other mollusk species. Further studies are needed to identify the critical points of the life cycle in this species in light of future ocean acidification.
    Keywords: Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Area; Benthic animals; Benthos; Bicarbonate ion; Birefringence intensity; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Crepidula fornicata; Distance; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Height; Laboratory experiment; Length; Mollusca; Morlaix_Bay; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; 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; pH; pH, standard error; Plane angle; Potentiometric; Potentiometric titration; Ratio; Replicates; Salinity; Single species; Species; Temperate; Temperature, water; Temperature, water, standard error
    Type: Dataset
    Format: text/tab-separated-values, 6822 data points
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