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  • 11
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    Adaptation and acclimatization to ocean acidification in marine ectotherms: an in situ transplant experiment with polychaetes at a shallow CO2 vent system (2013)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Keywords: Alkalinity, total; Alkalinity, total, standard error; Amphiglena mediterranea; Animalia; Annelida; Aragonite saturation state; Aragonite saturation state, standard error; Area/locality; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard error; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard error; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate ion, standard error; Carbonate system computation flag; Carbon dioxide; CO2 vent; Coast and continental shelf; EXP; Experiment; Field experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Ischia; Lysidice collaris; Lysidice ninetta; Mediterranean Sea; 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; Platynereis dumerilii; Polyophthalmus pictus; Potentiometric; Potentiometric titration; Respiration; Respiration rate, oxygen; Sabella spallanzanii; Salinity; Salinity, standard error; Single species; Species; Station label; Syllis prolifera; Temperate; Temperature, water; Temperature, water, standard error; UKOA; United Kingdom Ocean Acidification research programme; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 6290 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 12
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    Seawater carbonate chemistry and reproduction of the two calanoid copepods Centropages typicus and Temora longicornis in a laboratory experiment (2013)
    PANGAEA
    In:  Supplement to: McConville, Kristian; Halsband, Claudia; Fileman, Elaine S; Somerfield, Paul J; Findlay, Helen S; Spicer, John I (2013): Effects of elevated CO2 on the reproduction of two calanoid copepods. Marine Pollution Bulletin, 73(2), 428-434, https://doi.org/10.1016/j.marpolbul.2013.02.010
    Details
    Publication Date: 2024-03-15
    Description: Some planktonic groups suffer negative effects from ocean acidification (OA), although copepods might be less sensitive. We investigated the effect of predicted CO2 levels (range 480-750 ppm), on egg production and hatching success of two copepod species, Centropages typicus and Temora longicornis. In these short-term incubations there was no significant effect of high CO2 on these parameters. Additionally a very high CO2 treatment, (CO2 = 9830 ppm), representative of carbon capture and storage scenarios, resulted in a reduction of egg production rate and hatching success of C. typicus, but not T. longicornis. In conclusion, reproduction of C. typicus was more sensitive to acute elevated seawater CO2 than that of T. longicornis, but neither species was affected by exposure to CO2 levels predicted for the year 2100. The duration and seasonal timing of exposures to high pCO2, however, might have a significant effect on the reproduction success of calanoid copepods.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arthropoda; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Centropages typicus; Coast and continental shelf; Egg production rate per female; English_channel; EXP; Experiment; Feeding rate, relative; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Hatching rate; Incubation duration; Laboratory experiment; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, standard deviation; Potentiometric; Potentiometric titration; Replicates; Reproduction; Salinity; Salinity, standard deviation; Single species; Species; Temora longicornis; Temperate; Temperature, standard deviation; Temperature, water; Treatment; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 9998 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 13
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    Seawater carbonate chemistry and mortality, morphology, feeding rate, metabolic rate and activity of two keystone marine invertebrates (2018)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Ocean warming (OW) and acidification (OA) are key features of global change and are predicted to have negative consequences for marine species and ecosystems. At a smaller scale increasing oil and gas activities at northern high latitudes could lead to greater risk of petroleum pollution, potentially exacerbating the effects of such global stressors. However, knowledge of combined effects is limited. This study employed a scenario-based, collapsed design to investigate the impact of one local acute stressor (North Sea crude oil) and two chronic global drivers (pH for OA and temperature for OW), alone or in combination on aspects of the biology of larval stages of two key invertebrates: the northern shrimp (Pandalus borealis) and the green sea urchin (Strongylocentrotus droebachiensis). Both local and global drivers had negative effects on survival, development and growth of the larval stages. These effects were species- and stage-dependent. No statistical interactions were observed between local and global drivers and the combined effects of the two drivers were approximately equal to the sum of their separate effects. This study highlights the importance of adjusting regulation associated with oil spill prevention to maximize the resilience of marine organisms to predicted future global conditions.
    Keywords: Abnormality; Abnormality, standard deviation; Activity; Activity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Arthropoda; Behaviour; Benthic animals; Benthos; 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; Echinodermata; Experiment; Experiment duration; Feeding rate; Feeding rate, standard deviation; Feeding rate per individual; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Growth rate, standard deviation; Laboratory experiment; Larvae, mortality, daily; Larvae, swimming; Length; Length, standard deviation; Mortality, standard deviation; Mortality/Survival; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Organic toxins; Oxygen consumption, standard deviation; Oxygen consumption per body length; Oxygen consumption per mass; Pandalus borealis; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Potentiometric; Potentiometric titration; Registration number of species; Respiration; Salinity; Single species; Species; Strongylocentrotus droebachiensis; Swimming activity, standard deviation; Symmetry index; Symmetry index, standard deviation; Temperate; Temperature, water; Temperature, water, standard deviation; Treatment; Type; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 416 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 14
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    Seawater carbonate chemistry and biological processes during experiments with barnacle Semibalanus balanoides, 2010 (2010)
    PANGAEA
    In:  Supplement to: Findlay, Helen S; Kendall, Michael A; Spicer, John I; Widdicombe, Stephen (2010): Relative influences of ocean acidification and temperature on intertidal barnacle post-larvae at the northern edge of their geographic distribution. Estuarine, Coastal and Shelf Science, 88(4), 675-682, https://doi.org/10.1016/j.ecss.2009.11.036
    Details
    Publication Date: 2024-03-15
    Description: The Arctic Ocean and its associated ecosystems face numerous challenges over the coming century. Increasing atmospheric CO2 is causing increasing warming and ice melting as well as a concomitant change in ocean chemistry ("ocean acidification"). As temperature increases it is expected that many temperate species will expand their geographic distribution northwards to follow this thermal shift; however with the addition of ocean acidification this transition may not be so straightforward. Here we investigate the potential impacts of ocean acidification and climate change on populations of an intertidal species, in this case the barnacle Semibalanus balanoides, at the northern edge of its range. Growth and development of metamorphosing post-larvae were negatively impacted at lower pH (pH 7.7) compared to the control (pH 8.1) but were not affected by elevated temperature (+4 °C). The mineral composition of the shells did not alter under any of the treatments. The combination of reduced growth and maintained mineral content suggests that there may have been a change in the energetic balance of the exposed animals. In undersaturated conditions more mineral is expected to dissolve from the shell and hence more energy would be required to maintain the mineral integrity. Any energy that would normally be invested into growth could be reallocated and hence organisms growing in lowered pH grow slower and end up smaller than individuals grown in higher pH conditions. The idea of reallocation of resources under different conditions of pH requires further investigation. However, there could be long-term implications on the fitness of these barnacles, which in turn may prevent them from successfully colonising new areas.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arctic; Arthropoda; Automated CO2 analyzer (CIBA-Corning 965, UK); Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calcite saturation state, standard deviation; Calculated; 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, partial pressure, standard deviation; Coast and continental shelf; Conductivity meter (WTW, Weilheim, Gemany); Containers and aquaria (20-1000 L or 〈 1 m**2); 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); Growth/Morphology; Growth rate; Infrared CO2/H2O gas analyzer, non-dispersive, LI-COR type LI-6262; Laboratory experiment; Measured; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; pH meter (Mettler Toledo, USA); Polar; Salinity; Semibalanus balanoides; Semibalanus balanoides, Calcium in shell; Semibalanus balanoides, length; Semibalanus balanoides, length, mean increase; Semibalanus balanoides, Magnesium in shell; Single species; Survival; Temperature; Temperature, standard deviation; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2092 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 15
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    Seawater carbonate chemistry and Littorina obtusata biological processes during experiments, 2009 (2009)
    PANGAEA
    In:  Supplement to: Ellis, Robert P; Bersey, Jess; Rundle, Simon; Hall-Spencer, Jason M; Spicer, John I (2009): Subtle but significant effects of CO2 acidified seawater on embryos of the intertidal snail ,Littorina obtusata. Aquatic Biology, 5(1), 41-48, https://doi.org/10.3354/ab00118
    Details
    Publication Date: 2024-03-15
    Description: Our understanding of the effects of ocean acidification on whole organism function is growing, but most current information is for adult stages of development. Here, we show the effects of reduced pH seawater (pH 7.6) on aspects of the development, physiology and behaviour of encapsulated embryos of the marine intertidal gastropod Littorina obtusata. We found reduced viability and increased development times under reduced pH conditions, and the embryos had significantly altered behaviours and physiologies. In acidified seawater, embryos spent more time stationary, had slower rotation rates, spent less time crawling, but increased their movement periodicity compared with those maintained under control conditions. Larval and adult heart rates were significantly lower in acidified seawater, and hatchling snails had an altered shell morphology (lateral length and spiral shell length) compared to control snails. Our findings show that ocean acidification may have multiple, subtle effects during the early development of marine animals that may have implications for their survival beyond those predicted using later life stages.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); 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; Development; 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); Growth/Morphology; Laboratory experiment; Littorina obtusata; Littorina obtusata, aperture area; Littorina obtusata, aperture length; Littorina obtusata, aperture width; Littorina obtusata, eggs, empty; Littorina obtusata, embryo, deformed; Littorina obtusata, embryo, half hatched; Littorina obtusata, embryo, time, spinning; Littorina obtusata, embryo, time, stationary; Littorina obtusata, embryo, time crawling; Littorina obtusata, embryo, time moving; Littorina obtusata, embryo, twin; Littorina obtusata, embryo, viable; Littorina obtusata, hatched; Littorina obtusata, hatched, heartbeat; Littorina obtusata, hearbeat, ad; Littorina obtusata, hearbeat, larval; Littorina obtusata, lateral shell length; Littorina obtusata, lateral shell mid-length; Littorina obtusata, periodisation, moving; Littorina obtusata, periodisation, stationary; Littorina obtusata, periodisation, total; Littorina obtusata, rate of motion, whilst moving; Littorina obtusata, spiral length; Littorina obtusata, total rate of motion; Littorina obtusata, ventral shell length; Littorina obtusata, ventral shell width; Mollusca; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; PAR sensor LI-700, Li-COR Inc.; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH 209 meter (Hanna Instruments); Replicates; Reproduction; Salinity; see reference(s); Single species; Temperate; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 7359 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 16
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    Seawater carbonate chemistry and biological processes during experiments with postlarvae of barnacle of Semibalanus balanoides and Elminius modestus, 2010 (2010)
    PANGAEA
    In:  Supplement to: Findlay, Helen S; Kendall, Michael A; Spicer, John I; Widdicombe, Stephen (2010): Post-larval development of two intertidal barnacles at elevated CO2 and temperature. Marine Biology, 157(4), 725-735, https://doi.org/10.1007/s00227-009-1356-1
    Details
    Publication Date: 2024-03-15
    Description: Ocean acidification and global warming are occurring concomitantly, yet few studies have investigated how organisms will respond to increases in both temperature and CO2. Intertidal microcosms were used to examine growth, shell mineralogy and survival of two intertidal barnacle post-larvae, Semibalanus balanoides and Elminius modestus, at two temperatures (14 and 19°C) and two CO2 concentrations (380 and 1,000 ppm), fed with a mixed diatom-flagellate diet at 15,000 cells ml-1 with flow rate of 10 ml-1 min-1. Control growth rates, using operculum diameter, were 14 ± 8 µm day-1 and 6 ± 2 µm day-1 for S. balanoides and E. modestus, respectively. Subtle, but significant decreases in E. modestus growth rate were observed in high CO2 but there were no impacts on shell calcium content and survival by either elevated temperature or CO2. S. balanoides exhibited no clear alterations in growth rate but did show a large reduction in shell calcium content and survival under elevated temperature and CO2. These results suggest that a decrease by 0.4 pH(NBS) units alone would not be sufficient to directly impact the survival of barnacles during the first month post-settlement. However, in conjunction with a 4-5°C increase in temperature, it appears that significant changes to the biology of these organisms will ensue.
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Arthropoda; Benthic animals; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate, standard deviation; Calcification rate of calcium carbonate; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Coast and continental shelf; Counting; Crowding; Elminius modestus; Elminius modestus, growth rate; Elminius modestus, growth rate, standard deviation; Elminius modestus, size; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Infrared gas analyzer, IRGA Li-Cor1 6262; Laboratory experiment; Measured; Mortality/Survival; Multi meter, WTW, LF 197; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; pH meter (Mettler Toledo, USA); Salinity; Salinity, standard deviation; see reference(s); Semibalanus balanoides; Semibalanus balanoides, growth rate; Semibalanus balanoides, growth rate, standard deviation; Semibalanus balanoides, length; Single species; Species; Temperate; Temperature; Temperature, standard deviation; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 264 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 17
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    Seawater carbonate chemistry and biological processes during experiments with Patella vulgata, 2010 (2010)
    PANGAEA
    In:  Supplement to: Marchant, Hannah K; Calosi, Piero; Spicer, John I (2010): Short-term exposure to hypercapnia does not compromise feeding, acid–base balance or respiration of Patella vulgata but surprisingly is accompanied by radula damage. Journal of the Marine Biological Association of the United Kingdom, 90(7), 1379-1384, https://doi.org/10.1017/S0025315410000457
    Details
    Publication Date: 2024-03-15
    Description: The effect of short-term (5 days) exposure to CO2-acidified seawater (year 2100 predicted values, ocean pH = 7.6) on key aspects of the function of the intertidal common limpet Patella vulgata (Gastropoda: Patellidae) was investigated. Changes in extracellular acid-base balance were almost completely compensated by an increase in bicarbonate ions. A concomitant increase in haemolymph Ca2+ and visible shell dissolution implicated passive shell dissolution as the bicarbonate source. Analysis of the radula using SEM revealed that individuals from the hypercapnic treatment showed an increase in the number of damaged teeth and the extent to which such teeth were damaged compared with controls. As radula teeth are composed mainly of chitin, acid dissolution seems unlikely, and so the proximate cause of damage is unknown. There was no hypercapnia-related change in metabolism (O2 uptake) or feeding rate, also discounting the possibility that teeth damage was a result of a CO2-related increase in grazing. We conclude that although the limpet appears to have the physiological capacity to maintain its extracellular acid-base balance, metabolism and feeding rate over a 5 days exposure to acidified seawater, radular damage somehow incurred during this time could still compromise feeding in the longer term, in turn decreasing the top-down ecosystem control that P. vulgata exerts over rocky shore environments.
    Keywords: Acid-base regulation; Alkalinity, total; Animalia; Aragonite saturation state; Behaviour; Benthic animals; Benthos; 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; Closed respirometer technique (Spicer & Eriksson, 2003); CO2-Analyser Corning; Coast and continental shelf; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Feeding rate, relative; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Henderson-Hasselback equasion (Spicer et al., 1988); Identification; Laboratory experiment; Mollusca; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Patella vulgata; Patella vulgata, haemolymph, bicarbonate ion; Patella vulgata, haemolymph, carbon dioxide; Patella vulgata, haemolymph, pH; Patella vulgata, tooth, area, worn away; Patella vulgata, weight; pH; pH meter (Mettler Toledo InLab 413 SG); Respiration; Respiration, oxygen; Salinity; Single species; Temperate; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 480 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 18
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    Seawater carbonate chemistry during experiments with Patella vulgata, 2010 (2010)
    PANGAEA
    In:  Supplement to: Marchant, Hannah K; Calosi, Piero; Spicer, John I (2010): Short-term exposure to hypercapnia does not compromise feeding, acid–base balance or respiration of Patella vulgata but surprisingly is accompanied by radula damage. Journal of the Marine Biological Association of the United Kingdom, 90(7), 1379-1384, https://doi.org/10.1017/S0025315410000457
    Details
    Publication Date: 2024-03-15
    Description: The effect of short-term (5 days) exposure to CO2-acidified seawater (year 2100 predicted values, ocean pH = 7.6) on key aspects of the function of the intertidal common limpet Patella vulgata (Gastropoda: Patellidae) was investigated. Changes in extracellular acid-base balance were almost completely compensated by an increase in bicarbonate ions. A concomitant increase in haemolymph Ca2+ and visible shell dissolution implicated passive shell dissolution as the bicarbonate source. Analysis of the radula using SEM revealed that individuals from the hypercapnic treatment showed an increase in the number of damaged teeth and the extent to which such teeth were damaged compared with controls. As radula teeth are composed mainly of chitin, acid dissolution seems unlikely, and so the proximate cause of damage is unknown. There was no hypercapnia-related change in metabolism (O2 uptake) or feeding rate, also discounting the possibility that teeth damage was a result of a CO2-related increase in grazing. We conclude that although the limpet appears to have the physiological capacity to maintain its extracellular acid-base balance, metabolism and feeding rate over a 5 days exposure to acidified seawater, radular damage somehow incurred during this time could still compromise feeding in the longer term, in turn decreasing the top-down ecosystem control that P. vulgata exerts over rocky shore environments.
    Keywords: Alkalinity, total; Alkalinity, total, standard error; Aragonite saturation state; 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-Analyser Corning; Date; EPOCA; European Project on Ocean Acidification; Experimental treatment; Experiment day; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH meter (Mettler Toledo InLab 413 SG); Salinity; Temperature, water; Time of day
    Type: Dataset
    Format: text/tab-separated-values, 880 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 19
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    The importance of inter‐individual variation in predicting species' responses to global change drivers (2019)
    PANGAEA
    In:  Supplement to: Guscelli, Ella; Spicer, John I; Calosi, Piero (2019): The importance of inter‐individual variation in predicting species' responses to global change drivers. Ecology and Evolution, https://doi.org/10.1002/ece3.4810
    Details
    Publication Date: 2024-02-16
    Description: Inter‐individual variation in phenotypic traits has long been considered as "noise" rather than meaningful phenotypic variation, with biological studies almost exclusively generating and reporting average responses for populations and species' aver‐ age responses. Here, we compare the use of an individual approach in the investigation of extracellular acid-base regulation by the purple sea urchin Paracentrotus lividus challenged with elevated pCO2 and temperature conditions, with a more traditional approach which generates and formally compares mean values. We detected a high level of inter‐individual variation in acid-base regulation parameters both within and between treatments. Comparing individual and mean values for the first (apparent) dissociation constant of the coelomic fluid for individual sea urchins resulted in substantially different (calculated) acid-base parameters, and models with stronger statistical support. While the approach using means showed that coelomic pCO2 was influenced by seawater pCO2 and temperature combined, the individual approach indicated that it was in fact seawater temperature in isolation that had a significant effect on coelomic pCO2. On the other hand, coelomic [HCO3−] appeared to be primarily affected by seawater pCO2, and less by seawater temperature, irrespective of the approach adopted. As a consequence, we suggest that individual variation in physiological traits needs to be considered, and where appropriate taken into ac‐ count, in global change biology studies. It could be argued that an approach reliant on mean values is a "procedural error." It produces an artefact, that is, a population's mean phenotype. While this may allow us to conduct relatively simple statistical analyses, it will not in all cases reflect, or take into account, the degree of (physiological) diversity present in natural populations.
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 20
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    Inter‐individual variation and global change: morphmetrics (2019)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Keywords: Diameter; Height; Identification; Treatment; Volume; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 780 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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