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  • Data  (23)
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  • 1
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    Response of A. aurita ephyrae to three stressors: high-temperature, high-CO2 and low-oxygen (2016)
    PANGAEA
    In:  Alfred Wegener Institute - Biological Institute Helgoland | Supplement to: Algueró-Muñiz, Maria; Meunier, Cédric Léo; Holst, Sabine; Alvarez-Fernandez, Santiago; Boersma, Maarten (2016): Withstanding multiple stressors: ephyrae of the moon jellyfish (Aurelia aurita, Scyphozoa) in a high-temperature, high-CO2 and low-oxygen environment. Marine Biology, 163(9), https://doi.org/10.1007/s00227-016-2958-z
    Details
    Publication Date: 2023-02-24
    Description: Global change is affecting marine ecosystems through a combination of different stressors such as warming, ocean acidification and oxygen depletion. Very little is known about the interactions among these factors, especially with respect to gelatinous zooplankton. Therefore, in this study we investigated the direct effects of pH, temperature and oxygen availability on the moon jellyfish Aurelia aurita, concentrating on the ephyral life stage. Starved one-day-old ephyrae were exposed to a range of pCO2 (400-4000 ppm) and three different dissolved oxygen levels (from saturated to hypoxic conditions), in two different temperatures (5 and 15 °C) for 7 days. Carbon content and swimming activity were analysed at the end of the incubation period, and mortality noted. General linearized models were fitted through the data, with the best fitting models including two- and three-way interactions between pCO2, temperature and oxygen concentration. The combined effect of the stressors was small but significant, with the clearest negative effect on growth caused by the combination of all three stressors present (high temperature, high CO2, low oxygen). We conclude that A. aurita ephyrae are robust and that they are not likely to suffer from these environmental stressors in a near future.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
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    KOSMOS 2013 Gullmar Fjord long-term mesocosm study: Mesozooplankton abundance (2017)
    PANGAEA
    In:  Supplement to: Algueró-Muñiz, Maria; Alvarez-Fernandez, Santiago; Thor, Peter; Bach, Lennart Thomas; Esposito, Mario; Horn, Henriette G; Ecker, Ursula; Langer, Julia A F; Taucher, Jan; Malzahn, Arne; Riebesell, Ulf; Boersma, Maarten (2017): Ocean acidification effects on mesozooplankton community development: results from a long-term mesocosm experiment. PLoS ONE, 12(4), https://doi.org/10.1371/journal.pone.0175851
    Details
    Publication Date: 2024-03-06
    Description: Ocean acidification (OA) is one of the major symptoms of the current increase in atmospheric CO2. Here, we present results from a mesocosm experiment carried out during 113 days in the Gullmar Fjord, Skagerrak coast of Sweden, studying plankton responses to predicted end-of-century pCO2 levels. Abundances of both copepods (Pseudocalanus acuspes, Temora longicornis, and Oithona similis) and hydromedusae (Hybocodon prolifer and Aglantha digitale) responded to pCO2. Furthermore, stage-specific pCO2 sensitivities were detected in copepods, copepodites being the most sensitive stage.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; DATE/TIME; Day of experiment; Depth, top/min; DEPTH, water; Event label; Fish eggs; Fish larvae; Gullmar Fjord, Skagerrak, Sweden; KOSMOS_2013_Mesocosm-M1; KOSMOS_2013_Mesocosm-M10; KOSMOS_2013_Mesocosm-M2; KOSMOS_2013_Mesocosm-M3; KOSMOS_2013_Mesocosm-M4; KOSMOS_2013_Mesocosm-M5; KOSMOS_2013_Mesocosm-M6; KOSMOS_2013_Mesocosm-M7; KOSMOS_2013_Mesocosm-M8; KOSMOS_2013_Mesocosm-M9; KOSMOS 2013; LATITUDE; LONGITUDE; MESO; Mesocosm experiment; Mesocosm label; Mesozooplankton; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 6299 data points
    Location Call Number Limitation Availability
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  • 3
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    KOSMOS 2013 Gullmar Fjord mesocosm study: Microzooplankton biovolume (2016)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Cell, diameter; Cell, length; Cell biovolume; Gullmar Fjord, Skagerrak, Sweden; KOSMOS_2013_Fjord; KOSMOS 2013; Kristineberg, Sweden; MESO; Mesocosm experiment; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 1816 data points
    Location Call Number Limitation Availability
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  • 4
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    KOSMOS 2014 mesocosm study: mesozooplankton (2018)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: Appendicularia; BIOACID; Biological Impacts of Ocean Acidification; Chaetognatha; Cirripedia, larvae; Cladocera; Copepoda; DATE/TIME; Day of experiment; Decapoda, larvae; Depth, bottom/max; Depth, top/min; Doliolida; Echinodermata, larvae; Event label; Fish larvae; Foraminifera; Gastropoda, larvae; Hydromedusae; KOSMOS_2014; KOSMOS_2014_Atlantic-Reference; KOSMOS_2014_Mesocosm-M1; KOSMOS_2014_Mesocosm-M2; KOSMOS_2014_Mesocosm-M3; KOSMOS_2014_Mesocosm-M4; KOSMOS_2014_Mesocosm-M5; KOSMOS_2014_Mesocosm-M6; KOSMOS_2014_Mesocosm-M7; KOSMOS_2014_Mesocosm-M8; KOSMOS_2014_Mesocosm-M9; MESO; Mesocosm experiment; Mesocosm label; Mesozooplankton; Polychaeta; Pteropoda; Siphonophorae; Subtropical North Atlantic; Treatment: partial pressure of carbon dioxide
    Type: Dataset
    Format: text/tab-separated-values, 1779 data points
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  • 5
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    Long-term mesocosm study in Gullmar Fjord Sweden in 2013 (2017)
    PANGAEA
    In:  Supplement to: Boxhammer, Tim; Taucher, Jan; Bach, Lennart Thomas; Achterberg, Eric Pieter; Algueró-Muñiz, Maria; Bellworthy, Jessica; Czerny, Jan; Esposito, Mario; Haunost, Mathias; Hellemann, Dana; Ludwig, Andrea; Yong, Jaw-Chuen; Zark, Maren; Riebesell, Ulf; Anderson, Leif G (2018): Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. PLoS ONE, 13(5), e0197502, https://doi.org/10.1371/journal.pone.0197502
    Details
    Publication Date: 2024-03-06
    Description: The present biogeochemical parameters were measured or calculated in 2013 during a long-term mesocosm CO2 perturbation study in Gullmar Fjord (Sweden). The natural plankton community was enclosed in ten pelagic mesocosms following the natural winter-to-summer plankton succession. Five of the mesocosms were enriched with CO2 to simulate end-of the century ocean acidification (760 µatm) while the others served as controls. The data set was used for mass balance calculations to investigate the impact of realistic end-of-the-century CO2 concentrations on the development and partitioning of the carbon, nitrogen, phosphorus, and silica pools in a coastal pelagic ecosystem.
    Keywords: AA; Ammonium; Autoanalyzer; BIOACID; Biogenic silica; Biological Impacts of Ocean Acidification; Calculated; Calculated, see reference(s); Carbon, inorganic, dissolved; Carbon, organic, dissolved; Carbon, total, particulate; Carbon/Nitrogen ratio; Carbon analyser; Chlorophyll a; CN-analyser; Coulometric titration; DATE/TIME; Day of experiment; Event label; Fluorometric; Gullmar Fjord, Skagerrak, Sweden; Hand-operated CTD (Sea&Sun Technology, CTD 60M); High Performance Liquid Chromatography (HPLC); KOSMOS_2013_Mesocosm-M1; KOSMOS_2013_Mesocosm-M10; KOSMOS_2013_Mesocosm-M2; KOSMOS_2013_Mesocosm-M3; KOSMOS_2013_Mesocosm-M4; KOSMOS_2013_Mesocosm-M5; KOSMOS_2013_Mesocosm-M6; KOSMOS_2013_Mesocosm-M7; KOSMOS_2013_Mesocosm-M8; KOSMOS_2013_Mesocosm-M9; KOSMOS 2013; MESO; Mesocosm experiment; Mesocosm label; Mesozooplankton, biomass as carbon; Mesozooplankton, biomass as nitrogen; Mesozooplankton, biomass as phosphorus; Nitrate and Nitrite; Nitrogen, organic, dissolved; Nitrogen, total, particulate; Nitrogen, total dissolved; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Phosphate; Phosphorus, organic, dissolved; Phosphorus, particulate; Phosphorus, total dissolved; Salinity; Silicate; Spectrophotometry; Temperature, water; Vertical flux, biogenic silica; Vertical flux, biogenic silica, cumulated; Vertical flux, carbon; Vertical flux, carbon, cumulated; Vertical flux, nitrogen; Vertical flux, nitrogen, cumulated; Vertical flux, phosphorus; Vertical flux, phosphorus, cumulated; Volume
    Type: Dataset
    Format: text/tab-separated-values, 21872 data points
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  • 6
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    KOSMOS 2013 Gullmar Fjord mesocosm study: Microzooplankton abundance (2016)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Ciliates, other; DATE/TIME; Day of experiment; Dinoflagellates, athecate; Dinoflagellates, thecate; Dinophysis sp.; Euplotes sp.; Event label; Gullmar Fjord, Skagerrak, Sweden; Gyrodinium sp.; Identification; KOSMOS_2013_Mesocosm-M1; KOSMOS_2013_Mesocosm-M10; KOSMOS_2013_Mesocosm-M2; KOSMOS_2013_Mesocosm-M3; KOSMOS_2013_Mesocosm-M4; KOSMOS_2013_Mesocosm-M5; KOSMOS_2013_Mesocosm-M6; KOSMOS_2013_Mesocosm-M7; KOSMOS_2013_Mesocosm-M8; KOSMOS_2013_Mesocosm-M9; KOSMOS 2013; Laboea strobila; Lohmanniella oviformis; MESO; Mesocosm experiment; Myrionecta rubra; Protoperidinium sp.; Strobilidium sp.; Strombidium sp.; Suctoria; Tontonia gracillima; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 3328 data points
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  • 7
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    KOSMOS 2013 Gullmar Fjord mesocosm study: Phytoplankton abundance (2016)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: Arcocellulus sp.; BIOACID; Biological Impacts of Ocean Acidification; Ceratium fusus; Ceratium lineatum; Ceratium longipes; Ceratium tripos; Chaetoceros danicus; Chaetoceros decipiens; Coscinodiscus cf. concinnus; Cylindrotheca sp.; DATE/TIME; Day of experiment; Detonula sp.; Event label; Fragilaria sp.; Gullmar Fjord, Skagerrak, Sweden; Hemiselmis sp.; Identification; KOSMOS_2013_Mesocosm-M1; KOSMOS_2013_Mesocosm-M10; KOSMOS_2013_Mesocosm-M2; KOSMOS_2013_Mesocosm-M3; KOSMOS_2013_Mesocosm-M4; KOSMOS_2013_Mesocosm-M5; KOSMOS_2013_Mesocosm-M6; KOSMOS_2013_Mesocosm-M7; KOSMOS_2013_Mesocosm-M8; KOSMOS_2013_Mesocosm-M9; KOSMOS 2013; Licmophora sp.; Melosira sp.; MESO; Mesocosm experiment; Navicula cf. delicatula; Navicula cf. granii; Pseudo-nitzschia sp.; Skeletonema marinoi; Teleaulax sp.; Thalassionema sp.; Thalassiosira sp.; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 2616 data points
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  • 8
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    KOSMOS 2013 Gullmar Fjord mesocosm study: Microzooplankton and phytoplankton community composition (2016)
    PANGAEA
    In:  Supplement to: Horn, Henriette G; Sander, Nils; Stuhr, Annegret; Algueró-Muñiz, Maria; Bach, Lennart Thomas; Löder, Martin G J; Boersma, Maarten; Riebesell, Ulf; Aberle, Nicole (2016): Low CO2 Sensitivity of Microzooplankton Communities in the Gullmar Fjord, Skagerrak: Evidence from a Long-Term Mesocosm Study. PLoS ONE, 11(11), e0165800, https://doi.org/10.1371/journal.pone.0165800
    Details
    Publication Date: 2024-03-06
    Description: Ocean acidification is considered as a crucial stressor for marine communities. In this study, we tested the effects of the IPCC RPC6.0 end-of-century acidification scenario on a natural plankton community in the Gullmar Fjord, Sweden, during a long-term mesocosm experiment from a spring bloom to a mid-summer situation. The focus of this study was on microzooplankton and its interactions with phytoplankton and mesozooplankton. The microzooplankton community was dominated by ciliates, especially small Strombidium sp., with the exception of the last days when heterotrophic dinoflagellates increased in abundance. We did not observe any effects of high CO2 on the community composition and diversity of microzooplankton. While ciliate abundance, biomass and growth rate were not affected by elevated CO2, we observed a positive effect of elevated CO2 on dinoflagellate abundances. Additionally, growth rates of dinoflagellates were significantly higher in the high CO2 treatments. Given the higher Chlorophyll a content measured under high CO2, our results point at mainly indirect effects of CO2 on microzooplankton caused by changes in phytoplankton standing stocks, in this case most likely an increase in small-sized phytoplankton of 〈8 µm. Overall, the results from the present study covering the most important part of the growing season indicate that coastal microzooplankton communities are rather robust towards realistic acidification scenarios.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 9
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    Particle size spectra and plankton community size structure: Response to elevated CO2 during an in situ mesocosm experiment (2017)
    PANGAEA
    In:  Supplement to: Taucher, Jan; Haunost, Mathias; Boxhammer, Tim; Bach, Lennart Thomas; Algueró-Muñiz, Maria; Riebesell, Ulf (2017): Influence of ocean acidification on plankton community structure during a winter-to-summer succession: An imaging approach indicates that copepods can benefit from elevated CO2 via indirect food web effects. PLoS ONE, 12(2), e0169737, https://doi.org/10.1371/journal.pone.0169737
    Details
    Publication Date: 2024-03-06
    Description: In this study, we report from a long-term in situ mesocosm experiment, where we investigated the response of natural plankton communities in temperate waters (Gullmarfjord, Sweden) to elevated CO2 concentrations and OA as expected for the end of the century (~760 µatm pCO2). Based on a plankton-imaging approach, we examined size structure, community composition and food web characteristics of the whole plankton assemblage, ranging from picoplankton to mesozooplankton, during an entire winter-to-summer succession. The plankton imaging system revealed pronounced temporal changes in the size structure of the copepod community over the course of the plankton bloom. These observed shift towards smaller individuals resulted in an overall decrease of copepod biomass by 25%, despite increasing numerical abundances. Furthermore, we observed distinct effects of elevated CO2 on biomass and size structure of the entire plankton community. Notably, the biomass of copepods, dominated by Pseudocalanus acuspes, displayed a tendency towards elevated biomass by up to 30-40% under simulated ocean acidification. This effect was significant for certain copepod size classes and was most likely driven by CO2-stimulated responses of primary producers and a complex interplay of trophic interactions that allowed this CO2 effect to propagate up the food web.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 10
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    Responses of a subtropical zooplankton community to ocean acidification during oligotrophic conditions and simulated upwelling (KOSMOS 2014) (2018)
    PANGAEA
    In:  Supplement to: Algueró-Muñiz, Maria; Horn, Henriette G; Alvarez-Fernandez, Santiago; Spisla, Carsten; Aberle, Nicole; Bach, Lennart Thomas; Guan, WanChun; Achterberg, Eric Pieter; Riebesell, Ulf; Boersma, Maarten (2019): Analyzing the Impacts of Elevated-CO2 Levels on the Development of a Subtropical Zooplankton Community During Oligotrophic Conditions and Simulated Upwelling. Frontiers in Marine Science, 6, https://doi.org/10.3389/fmars.2019.00061
    Details
    Publication Date: 2024-03-06
    Description: Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under a range of different pCO2 levels (from ∼400 to ∼1480 μatm).
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 2 datasets
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