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  • 1
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    Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation (2012)
    PANGAEA
    In:  Supplement to: Fitzer, Susan C; Caldwell, Gary S; Close, Andrew J; Clare, Anthony S; Upstill-Goddard, Robert C; Bentley, Matthew G (2012): Ocean acidification induces multi-generational decline in copepod naupliar production with possible conflict for reproductive resource allocation. Journal of Experimental Marine Biology and Ecology, 418-419, 30-36, https://doi.org/10.1016/j.jembe.2012.03.009
    Details
    Publication Date: 2024-03-15
    Description: Climate change, including ocean acidification (OA), presents fundamental challenges to marine biodiversity and sustained ecosystem health. We determined reproductive response (measured as naupliar production), cuticle composition and stage specific growth of the copepod Tisbe battagliai over three generations at four pH conditions (pH 7.67, 7.82, 7.95, and 8.06). Naupliar production increased significantly at pH 7.95 compared with pH 8.06 followed by a decline at pH 7.82. Naupliar production at pH 7.67 was higher than pH 7.82. We attribute the increase at pH 7.95 to an initial stress response which was succeeded by a hormesis-like response at pH 7.67. A multi-generational modelling approach predicted a gradual decline in naupliar production over the next 100 years (equivalent to approximately 2430 generations). There was a significant growth reduction (mean length integrated across developmental stage) relative to controls. There was a significant increase in the proportion of carbon relative to oxygen within the cuticle as seawater pH decreased. Changes in growth, cuticle composition and naupliar production strongly suggest that copepods subjected to OA-induced stress preferentially reallocate resources towards maintaining reproductive output at the expense of somatic growth and cuticle composition. These responses may drive shifts in life history strategies that favour smaller brood sizes, females and perhaps later maturing females, with the potential to profoundly destabilise marine trophodynamics.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Arthropoda; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); 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; Coast and continental shelf; Elements; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Generation; Group; Growth/Morphology; Identification; Laboratory experiment; Length; Nauplii; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; Percentage; pH; pH, standard deviation; Potentiometric; Potentiometric titration; Replicates; Reproduction; Salinity; Sample code/label; Single species; Species; Stage; Temperate; Temperature, water; Temperature, water, standard deviation; Tisbe battagliai; Treatment; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 30348 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Seawater carbonate chemistry and chemical composition and functional properties of Ulva rigida (2018)
    PANGAEA
    In:  Supplement to: Gao, Guang; Clare, Anthony S; Chatzidimitriou, Eleni; Rose, Craig; Caldwell, Gary S (2018): Effects of ocean warming and acidification, combined with nutrient enrichment, on chemical composition and functional properties of Ulva rigida. Food Chemistry, 258, 71-78, https://doi.org/10.1016/j.foodchem.2018.03.040
    Details
    Publication Date: 2024-03-15
    Description: Ulva is increasingly viewed as a food source in the world. Here, Ulva rigida was cultured at two levels of temperature (14, 18°C), pH (7.95, 7.55, corresponding to low and high pCO2), and nitrate conditions (6 μmol L-1, 150 μmol L-1), to investigate the effects of ocean warming, acidification, and eutrophication on food quality of Ulva species. High temperature increased the content of each amino acid. High nitrate increased the content of all amino acid except aspartic acid and cysteine. High temperature, pCO2, and nitrate also increased content of most fatty acids. The combination of high temperature, pCO2, and nitrate increased the swelling capacity, water holding capacity, and oil holding capacity by 15.60%, 7.88%, and 16.32% respectively, compared to the control. It seems that future ocean environment would enhance the production of amino acid and fatty acid as well as the functional properties in Ulva species.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Amino acid, standard deviation; Amino acids; Aragonite saturation state; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); 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; Carbon dioxide, standard deviation; Chlorophyta; Coast and continental shelf; Cullercoats_beach; EXP; Experiment; Experiment duration; Fatty acids; Fatty acids, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Macroalgae; Macro-nutrients; Name; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Oil holding capacity per dry mass; Oil holding capacity per dry mass, standard deviation; Other studied parameter or process; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Percentage; Percentage, standard deviation; pH; pH, standard deviation; Plantae; Registration number of species; Salinity; Single species; Species; Swelling capacity per dry mass; Swelling capacity per dry mass, standard deviation; Temperate; Temperature; Temperature, water; Temperature, water, standard deviation; Treatment; Type; Ulva rigida; Uniform resource locator/link to reference; Water holding capacity; Water holding capacity, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 15280 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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