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  • 1
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    Effects of increased pCO2 and temperature on trace element (Ag, Cd and Zn) bioaccumulation in the eggs of the common cuttlefish, Sepia officinalis (2009)
    European Geosciences Union (EGU)
    In:  Biogeosciences, 6 (11). pp. 2561-2573.
    Details
    Publication Date: 2021-09-03
    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.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.5194/bg-6-2561-2009
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
    Electronic Resource
    Electronic Resource
    An experimental study of the uptake and loss of Ra-226 by the tissue of the tropical freshwater musselVelesunio angasi (Sowerby) under varying Ca and Mg water concentrations (1986)
    Springer
    Hydrobiologia 139 (1986), S. 59-80 
    Details
    ISSN: 1573-5117
    Keywords: Radium-226 ; uptake ; mussel ; calcium ; magnesium ; metabolic analogue ; competitive inhibition ; uranium ; mining
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Freshwater musselsVelesunio angasi (Sowerby) from Magela Creek, Alligator Rivers Region, Northern Territory, Australia, experimentally exposed to mean elevated Ra-226 water concentrations ranging between 0.95 and 1.85 Bq 1−1 for 28 days, accumulated Ra-226 in their tissue to mean concentrations ranging from 2.8 to 4.8 Bq per gram of dry tissue. The Ra-226 (log10) was accumulated in a linear pattern over exposure periods of 28 and 56 days. Mussel size and sex had little or no effect on the rates of uptake of Ra-226 per gram of tissue. Increased Ca and Mg water concentrations, both in combination and singly, reduced the rate of uptake of Ra-226 by mussel tissue. The experimental data are consistent with Ra-226 accumulation being inversely proportional to both Ca and Mg water concentrations; for Ca the constant of proportionality i.e. $$Ra = \frac{C}{{[Ca]}}$$ is unity; for Mg it is about 0.1. The results indicate competitive inhibition of the uptake of Ra-226 by Ca, i.e. that the mussel treated Ra-226 as a metabolic analogue of Ca; however, there are other possible interpretations of these results that need not invoke competitive inhibition. For Mg the results suggest involvement of some other mechanism(s) apart from or in addition to competitive inhibition of Ra-226 by Mg. Exposure of mussels that had accumulated Ra-226 under field and laboratory conditions to radium-free water for up to 286 days resulted in no significant loss (P 〉 0.05) of Ra-226 from the tissue. This indicates a very long biological half-life for Ra-226 in the tissue ofV. angasi.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00770242
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    An experimental study of 226Ra and 45Ca accumulation from the aquatic medium by freshwater turtles (fam. Chelidae) under varying Ca and Mg water concentrations (1991)
    Springer
    Hydrobiologia 218 (1991), S. 205-231 
    Details
    ISSN: 1573-5117
    Keywords: 226Ra ; 45Ca ; calcium ; magnesium ; accumulation ; turtle ; uranium mining
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Snapping turtles Elseya dentata (Gray) from Magela Creek, Northern Territory, were exposed under laboratory conditions for up to 30 days to waters resembling the inorganic composition of Magela Creek water during the Wet season, with background and elevated Ca and Mg concentrations, that were labelled with 226Ra and 45Ca. The resulting concentrations of 45Ca in muscle, skin, gut, liver, shell bone and leg bone of E. dentata equilibrated or approached equilibrium by 12–18 days. Among the experiments, the concentrations of 45Ca in all six tissues were inversely related to turtle mass. An increase in the Ca water concentration by a factor of 15 increased the 45Ca concentration in all six tissues. The arithmetic factors of increase in the concentration in each tissue were proportional or more than proportional to the factor of increase in Ca water concentration; this factor was highest for muscle tissue (26.6). An increase in the Mg water concentration by a factor of 48 reduced the 45Ca concentration in all tissues except skin where it increased. The concentration of 226Ra in each tissue (except the gut) was positively related to its 45Ca concentration and inversely related to turtle mass in muscle, skin and liver. With the exception of the skin, the increased Ca water concentration did not reduce the 226Ra in the tissues but increased the 226Ra concentration in bone and muscle. The increased Mg water concentration had an inverse effect on the 226Ra concentrations in all tissues except shell. With the exception of the skin the effects of increased Ca and Mg water concentrations and turtle size on 226Ra concentrations in the tissues of E. dentata were similar to their effects on 45Ca tissue concentrations, indicating the similar metabolic behaviour of 226Ra and 45Ca in E. dentata. Exposures of the species Elseya latisternum (Gray), Emydura signata (Ahl) and Chelodina longicollis (Shaw), which are the same or closely related to species reported to occur in Magela Creek, to 45Ca-labelled Sydney tap water for 7 days demonstrated their ability to also accumulate 45Ca from their aquatic medium. The patterns of 45Ca concentrations in the tissues of these species indicated that they were inversely related to turtle mass, as demonstrated in E. dentata. The concentrations of 45Ca accumulated in the tissues were also comparable to those found in single specimens of E. dentata and E. victoriae (Gray) that were exposed for 7 days to simulated Magela Creek water. The data also indicated the larger long-necked C. longicollis accumulated less 45Ca per gram of tissue than similar-sized, short-necked species E. signata and E. latisternum, suggesting that long-necked turtles from Magela Creek would accumulate less 226Ra from their aquatic medium than similar-sized short-necked species. The capacity of E. dentata to accumulate 226Ra from the aquatic medium is about two orders of magnitude less than that of the tissue of the freshwater mussel Velesunio angasi (Sowerby) exposed under similar experimental conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00038836
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    Paper (German National Licenses)
    Fulltext
  • 4
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    Towards improved socio-economic assessments of ocean acidification’s impacts (2013)
    Springer
    Details
    Publication Date: 2022-05-26
    Description: © The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Marine Biology 160 (2013): 1773-1787, doi:10.1007/s00227-012-2031-5.
    Description: Ocean acidification is increasingly recognized as a component of global change that could have a wide range of impacts on marine organisms, the ecosystems they live in, and the goods and services they provide humankind. Assessment of these potential socio-economic impacts requires integrated efforts between biologists, chemists, oceanographers, economists and social scientists. But because ocean acidification is a new research area, significant knowledge gaps are preventing economists from estimating its welfare impacts. For instance, economic data on the impact of ocean acidification on significant markets such as fisheries, aquaculture and tourism are very limited (if not non-existent), and non-market valuation studies on this topic are not yet available. Our paper summarizes the current understanding of future OA impacts and sets out what further information is required for economists to assess socio-economic impacts of ocean acidification. Our aim is to provide clear directions for multidisciplinary collaborative research.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Format: application/msword
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    PAPER (OA)
  • 5
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    Seawater carbonate chemistry and accumulation of radiotracers in squid, Loligo vulgaris during experiments, 2011 (2011)
    PANGAEA
    In:  Supplement to: Lacoue-Labarthe, Thomas; Reveillac, E; Oberhänsli, F; Teyssié, Jean-Louis; Jeffree, Ross; Gattuso, Jean-Pierre (2011): Effects of ocean acidification on trace element accumulation in the early-life stages of squid Loligo vulgaris. Aquatic Toxicology, 105(1-2), 166-176, https://doi.org/10.1016/j.aquatox.2011.05.021
    Details
    Publication Date: 2023-03-09
    Description: The anthropogenic release of carbon dioxide (CO2) into the atmosphere leads to an increase in the CO2 partial pressure (pCO2) in the ocean, which may reach 950 ?atm by the end of the 21st century. The resulting hypercapnia (high pCO2) and decreasing pH ("ocean acidification") are expected to have appreciable effects on water-breathing organisms, especially on their early-life stages. For organisms like squid that lay their eggs in coastal areas where the embryo and then paralarva are also exposed to metal contamination, there is a need for information on how ocean acidification may influence trace element bioaccumulation during their development. In this study, we investigated the effects of enhanced levels of pCO2 (380, 850 and 1500 ?atm corresponding to pHT of 8.1, 7.85 and 7.60) on the accumulation of dissolved 110mAg, 109Cd, 57Co, 203Hg, 54Mn and 65Zn radiotracers in the whole egg strand and in the different compartments of the egg of Loligo vulgaris during the embryonic development and also in hatchlings during their first days of paralarval life. Retention properties of the eggshell for 110mAg, 203Hg and 65Zn were affected by the pCO2 treatments. In the embryo, increasing seawater pCO2 enhanced the uptake of both 110mAg and 65Zn while 203Hg showed a minimum concentration factor (CF) at the intermediate pCO2. 65Zn incorporation in statoliths also increased with increasing pCO2. Conversely, uptake of 109Cd and 54Mn in the embryo decreased as a function of increasing pCO2. Only the accumulation of 57Co in embryos was not affected by increasing pCO2. In paralarvae, the CF of 110mAg increased with increasing pCO2, whereas the 57Co CF was reduced at the highest pCO2 and 203Hg showed a maximal uptake rate at the intermediate pCO2. 54Mn and 65Zn accumulation in paralarvae were not significantly modified by hypercapnic conditions. Our results suggest a combined effect of pH on the adsorption and protective properties of the eggshell and of hypercapnia on the metabolism of embryo and paralarvae, both causing changes to the accumulation of metals in the tissues of L. vulgaris.
    Keywords: Animalia; Bottles or small containers/Aquaria (〈20 L); Coast and continental shelf; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Laboratory experiment; Loligo vulgaris; Mediterranean Sea; Mollusca; Nekton; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Pelagos; Single species; Temperate
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 6
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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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    DATA PANGAEA
  • 7
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    Limacina helicina size weight relationship in Kongsfjorden Svalbard, May 2009 (2010)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Description: Thecosome pteropods (pelagic mollusks) can play a key role in the food web of various marine ecosystems. They are a food source for zooplankton or higher predators such as fishes, whales and birds that is particularly important in high latitude areas. Since they harbor a highly soluble aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO2 emissions. The effect of changes in the seawater chemistry was investigated on Limacina helicina, a key species of Arctic pelagic ecosystems. Individuals were kept in the laboratory under controlled pCO2 levels of 280, 380, 550, 760 and 1020 µatm and at control (0°C) and elevated (4°C) temperatures. The respiration rate was unaffected by pCO2 at control temperature, but significantly increased as a function of the pCO2 level at elevated temperature. pCO2 had no effect on the gut clearance rate at either temperature. Precipitation of CaCO3, measured as the incorporation of 45Ca, significantly declined as a function of pCO2 at both temperatures. The decrease in calcium carbonate precipitation was highly correlated to the aragonite saturation state. Even though this study demonstrates that pteropods are able to precipitate calcium carbonate at low aragonite saturation state, the results support the current concern for the future of Arctic pteropods, as the production of their shell appears to be very sensitive to decreased pH. A decline of pteropod populations would likely cause dramatic changes to various pelagic ecosystems.
    Keywords: EPOCA; European Project on Ocean Acidification; Limacina helicina, length; Limacina helicina, mass; ORDINAL NUMBER
    Type: Dataset
    Format: text/tab-separated-values, 140 data points
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    DATA PANGAEA
  • 8
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    Coral and mollusc resistance to ocean acidification adversely affected by warming, 2011 (2011)
    PANGAEA
    In:  Supplement to: Rodolfo-Metalpa, Riccardo; Houlbrèque, Fanny; Tambutté, Eric; Boisson, Florence; Baggini, Cecilia; Patti, F P; Jeffree, Ross; Fine, M; Foggo, A; Gattuso, Jean-Pierre; Hall-Spencer, Jason M (2011): Coral and mollusc resistance to ocean acidification adversely affected by warming. Nature Climate Change, 1, 308-312, https://doi.org/10.1038/nclimate1200
    Details
    Publication Date: 2024-01-13
    Description: Increasing atmospheric carbon dioxide (CO2) concentrations are expectedto decrease surface ocean pH by 0.3-0.5 units by 2100, lowering the carbonate ion concentration of surfacewaters. This rapid acidification is predicted to dramatically decrease calcification in many marine organisms. Reduced skeletal growth under increased CO2 levels has already been shown for corals, molluscs and many other marine organisms. The impact of acidification on the ability of individual species to calcify has remained elusive, however, as measuring net calcification fails to disentangle the relative contributions of gross calcification and dissolution rates on growth. Here, we show that corals and molluscs transplanted along gradients of carbonate saturation state at Mediterranean CO2 vents are able to calcify and grow at even faster than normal rates when exposed to the high CO2 levels projected for the next 300 years. Calcifiers remain at risk, however, owing to the dissolution of exposed shells and skeletons that occurs as pH levels fall. Our results show that tissues and external organic layers play a major role in protecting shells and skeletons from corrosive sea water, limiting dissolution and allowing organisms to calcify. Our combined field and laboratory results demonstrate that the adverse effects of global warming are exacerbated when high temperatures coincide with acidification.
    Keywords: Animalia; Balanophyllia europaea; Benthic animals; Benthos; Calcification/Dissolution; Cladocora caespitosa; Cnidaria; CO2 vent; Coast and continental shelf; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Field experiment; Growth/Morphology; Mediterranean Sea; Mediterranean Sea Acidification in a Changing Climate; MedSeA; Mollusca; Mytilus galloprovincialis; OA-ICC; Ocean Acidification International Coordination Centre; Patella caerulea; Single species; Temperate; Temperature
    Type: Dataset
    Format: application/zip, 7 datasets
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    DATA PANGAEA
  • 9
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    Seawater carbonate chemistry near the island of Ischia (Italy), March 2008 to October 2009 (2011)
    PANGAEA
    Details
    Publication Date: 2024-01-13
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Aragonite saturation state; Balanophyllia europaea; Bicarbonate ion; Calcite saturation state; Calculated using CO2SYS; Carbon, inorganic, dissolved; Carbonate ion; Carbon dioxide; Cladocora caespitosa; CO2 vent; Coast and continental shelf; DATE/TIME; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Field experiment; Identification; LATITUDE; LONGITUDE; Measured; Mediterranean Sea Acidification in a Changing Climate; MedSeA; Mytilus galloprovincialis; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Patella caerulea; pH; Salinity; Site; Temperate; Temperature; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2206 data points
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    DATA PANGAEA
  • 10
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    Seawater carbonate chemistry, shell linear extension and calcification during calcein staining and 45Ca experiments with pteropod Limacina helicina, 2009 (2009)
    PANGAEA
    In:  Supplement to: Comeau, Steeve; Gorsky, G; Jeffree, Ross; Teyssié, Jean-Louis; Gattuso, Jean-Pierre (2009): Impact of ocean acidification on a key Arctic pelagic mollusc (Limacina helicina). Biogeosciences, 6(9), 1877-1882, https://doi.org/10.5194/bg-6-1877-2009
    Details
    Publication Date: 2024-03-15
    Description: Thecosome pteropods (shelled pelagic molluscs) can play an important role in the food web of various ecosystems and play a key role in the cycling of carbon and carbonate. Since they harbor an aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO2 emissions. The impact of changes in the carbonate chemistry was investigated on Limacina helicina, a key species of Arctic ecosystems. Pteropods were kept in culture under controlled pH conditions corresponding to pCO2 levels of 350 and 760 µatm. Calcification was estimated using a fluorochrome and the radioisotope 45Ca. It exhibits a 28 % decrease at the pH value expected for 2100 compared to the present pH value. This result supports the concern for the future of pteropods in a high-CO2 world, as well as of those species dependent upon them as a food resource. A decline of their populations would likely cause dramatic changes to the structure, function and services of polar ecosystems.
    Keywords: **45Ca incorporation; Alkalinity, total; Animalia; Aragonite saturation state; Arctic; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); 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; Comeau_etal_09-45Ca; Comeau_etal_09-calcein; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Event label; EXP; Experiment; Experimental treatment; Experiment day; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Laboratory experiment; Limacina helicina; Measured; Mollusca; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter (Metrohm, 826 pH mobile); Polar; Salinity; Shell linear extension; Single species; Temperature, water; Titration potentiometric; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 154 data points
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    DATA PANGAEA
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