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  • 1
  • 2
    Publication Date: 2021-02-08
    Description: Ocean warming and acidification (OA) may alter the fitness of species in marine pelagic ecosystems through community effects or direct physiological impacts. We used the zooplanktonic appendicularian, Oikopleura dioica, to assess temperature and pH effects at mesocosm and microcosm scales. In mesocosms, both OA and warming positively impacted O. dioica abundance over successive generations. In microcosms, the positive impact of OA, was observed to result from increased fecundity. In contrast, increased pH, observed for example during phytoplankton blooms, reduced fecundity. Oocyte fertility and juvenile development were equivalent under all pH conditions, indicating that the positive effect of lower pH on O. dioica abundance was principally due to increased egg number. This effect was influenced by food quantity and quality, supporting possible improved digestion and assimilation at lowered pH. Higher temperature resulted in more rapid growth, faster maturation and earlier reproduction. Thus, increased temperature and reduced pH had significant positive impacts on O. dioica fitness through increased fecundity and shortened generation time, suggesting that predicted future ocean conditions may favour this zooplankton species. © 2018 Bouquet et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
    Type: Article , PeerReviewed
    Format: text
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  • 3
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    PANGAEA
    In:  Supplement to: Bouquet, Jean-Marie; Troedsson, Christofer; Novac, Aliona; Reeve, Magnus; Lechtenbörger, Anna K; Massart, Wendy; Skaar, Katrine S; Aasjord, Anne; Dupont, Sam; Thompson, Eric M (2018): Increased fitness of a key appendicularian zooplankton species under warmer, acidified seawater conditions. PLoS ONE, 13(1), e0190625, https://doi.org/10.1371/journal.pone.0190625
    Publication Date: 2023-10-23
    Description: Ocean warming and acidification (OA) may alter the fitness of species in marine pelagic ecosystems through community effects or direct physiological impacts. We used the zooplanktonic appendicularian, Oikopleura dioica, to assess temperature and pH effects at mesocosm and microcosm scales. In mesocosms, both OA and warming positively impacted O. dioica abundance over successive generations. In microcosms, the positive impact of OA, was observed to result from increased fecundity. In contrast, increased pH, observed for example during phytoplankton blooms, reduced fecundity. Oocyte fertility and juvenile development were equivalent under all pH conditions, indicating that the positive effect of lower pH on O. dioica abundance was principally due to increased egg number. This effect was influenced by food quantity and quality, supporting possible improved digestion and assimilation at lowered pH. Higher temperature resulted in more rapid growth, faster maturation and earlier reproduction. Thus, increased temperature and reduced pH had significant positive impacts on O. dioica fitness through increased fecundity and shortened generation time, suggesting that predicted future ocean conditions may favour this zooplankton species.
    Keywords: Animalia; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); Chordata; Coast and continental shelf; Development; Growth/Morphology; Laboratory experiment; Mesocosm or benthocosm; Mortality/Survival; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Oikopleura dioica; Reproduction; Single species; Temperate; Temperature; Zooplankton
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
    Publication Date: 2024-03-15
    Keywords: Alkalinity, total; Animalia; Aragonite saturation state; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Body length; Calcite saturation state; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chordata; Coast and continental shelf; Day of experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Identification; Individuals; Laboratory experiment; Length; Mesocosm or benthocosm; North Atlantic; Oikopleura dioica; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Registration number of species; Replicate; Silt, mass brutto; Single species; Species; Temperate; Temperature; Temperature, water; Treatment; Type; Uniform resource locator/link to reference; Width; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 50770 data points
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  • 5
    Publication Date: 2024-03-15
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthos; Bicarbonate ion; Body length; Body length, standard deviation; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chordata; Coast and continental shelf; Day of experiment; Development; Diet; EXP; Experiment; Experiment duration; Fecundity; Fecundity, standard deviation; Fertilization success rate; Fertilization success rate, standard error; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Intrinsic rate of natural increase; Intrinsic rate of natural increase, standard error; Juvenile development; Juvenile development, standard error; Laboratory experiment; Mortality/Survival; North Atlantic; Oikopleura dioica; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Proportion of survival; Proportion of survival, standard deviation; Registration number of species; Reproduction; Rosslandspollen; Salinity; Salinity, standard deviation; Single species; Species; Temperate; Temperature; Temperature, water; Temperature, water, standard deviation; Time, standard error; Time in hours; Treatment; Type; Uniform resource locator/link to reference; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 4272 data points
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  • 6
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    Unknown
    PANGAEA
    In:  Supplement to: De Schepper, Stijn; Ray, Jessica L; Skaar, Katrine S; Sadatzki, Henrik; Ijaz, Umer Zeeshan; Stein, Ruediger; Larsen, Aud (2019): The potential of sedimentary ancient DNA for reconstructing past sea ice evolution. The ISME Journal, https://doi.org/10.1038/s41396-019-0457-1
    Publication Date: 2024-04-27
    Description: At Site GS15-198-38, Greenland Sea, we analysed the surface sample (from a multicore) and eight Late Quaternary samples from a Calypso core. The age model for the Calypso core GS15-198-38CC is based on seven AMS 14C ages down to 345 cm, and a 5-cm resolution N. pachyderma sinistral isotope stratigraphy (1) below that level. We analysed the palynology, generated organic biomarker data (including IP25, sterols) and performed quantitative PCR (droplet digital PCR, ddPCR) of the sympagic dinoflagellate Polarella glacialis.
    Keywords: Arctic Sea Ice and Greenland Ice Sheet Sensitivity; ice2ice
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 7
    Publication Date: 2024-04-27
    Keywords: 58GS20150719; Arctic Sea Ice and Greenland Ice Sheet Sensitivity; CALYPSO; Calypso Corer; Droplet Digital PCR (ddPCR); Event label; G. O. Sars (2003); Gene copies; GS15-198; GS15-198-38-CC; GS15-198-38-MC; ice2ice; MUC; MultiCorer; Sample code/label; Section; Section Bot in meters below surface; Section Top in meters below surface; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 1072 data points
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  • 8
    Publication Date: 2024-04-27
    Keywords: 58GS20150719; Acritarcha; Acritarcha, error; Acritarcha, reworked; Acritarcha indeterminata; Acritarcha per unit mass; AGE; Algae, freshwater; Algae, freshwater, error; Arctic Sea Ice and Greenland Ice Sheet Sensitivity; Bitectatodinium tepikiense; Botryococcus; Brigantedinium simplex; Brigantedinium spp.; CALYPSO; Calypso Corer; Counting, palynology; Cymatiosphaera? invaginata; Dinoflagellata: cysts indeterminata; Dinoflagellate cyst; Dinoflagellate cyst, standard error; Dinoflagellate cyst indeterminata; Dinoflagellate cyst per unit mass; Dinoflagellate cyst reworked; Dry mass; Echinidinium spp.; Evenness of species; Event label; G. O. Sars (2003); GS15-198; GS15-198-38-CC; GS15-198-38-MC; Halodinium minor; Halodinium spp.; ice2ice; Impagidinium pallidum; Impagidinium sp.; Islandinium minutum; Laboratory code/label; Leiospheres; Lingulodinium machaerophorum; Lycopodium clavatum; Lycopodium clavatum, standard deviation; Lycopodium clavatum spores per tablet; Lycopodium tablets; Lycopodium tablets charge number; MUC; MultiCorer; Nematosphaeropsis labyrinthus; Nematosphaeropsis rigida; Nematosphaeropsis spp.; Palynomorpha; Palynomorpha, reworked; Palynomorpha, reworked, error; Palynomorpha, reworked per unit sediment mass; Palynomorpha, terrestrial; Palynomorpha, terrestrial, error; Palynomorpha, terrestrial, reworked; Pediastrum; Picea; Pinus; Polarella glacialis; Pollen indeterminata; Protoceratium reticulatum, cysts; Pterospermella spp.; Sample code/label; Section; Section Bot in meters below surface; Section Top in meters below surface; Shannon Diversity Index; Species richness; Spiniferites elongatus; Spiniferites ramosus; Spiniferites spp.; Spores, trilete; Tsuga
    Type: Dataset
    Format: text/tab-separated-values, 385 data points
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  • 9
    Publication Date: 2024-04-27
    Keywords: (9E)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; (9E)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene per unit sediment mass; (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene per unit sediment mass; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane per unit sediment mass; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Ethylcholest-5-en-3beta-ol per unit sediment mass; 24-Methylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholest-5-en-3beta-ol per unit sediment mass; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol per unit sediment mass; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per unit sediment mass; 58GS20150719; AGE; Arctic Sea Ice and Greenland Ice Sheet Sensitivity; CALYPSO; Calypso Corer; Carbon, organic, total; Carbon-Sulfur Determinator, ELTRA CS-2000; Diene highly branched isoprenoids, per unit mass total organic carbon; Diene highly branched isoprenoids per unit sediment mass; Event label; G. O. Sars (2003); Gas chromatography - Mass spectrometry (GC-MS); GS15-198; GS15-198-38-CC; GS15-198-38-MC; ice2ice; MUC; MultiCorer; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker Dinosterol IP25 index; Sample code/label; Sampling date; Section; Section Bot in meters below surface; Section Top in meters below surface
    Type: Dataset
    Format: text/tab-separated-values, 214 data points
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