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  • Data  (26)
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  • 1
    Publication Date: 2023-02-24
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Cell, diameter; Cell biovolume; Cell size; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 620 data points
    Location Call Number Limitation Availability
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  • 2
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    PANGAEA
    In:  Supplement to: Horn, Henriette G; Boersma, Maarten; Garzke, Jessica; Löder, Martin G J; Sommer, Ulrich; Aberle, Nicole (2016): Effects of high CO2 and warming on a Baltic Sea microzooplankton community. ICES Journal of Marine Science, 73, 772-782, https://doi.org/10.1093/icesjms/fsv198
    Publication Date: 2023-02-24
    Description: Global warming and ocean acidification are among the most important stressors for aquatic ecosystems in the future. To investigate their direct and indirect effects on a near-natural plankton community, a multiple-stressor approach is needed. Hence, we set up mesocosms in a full-factorial design to study the effects of both warming and high CO2 on a Baltic Sea autumn plankton community, concentrating on the impacts on microzooplankton (MZP). MZP abundance, biomass, and species composition were analysed over the course of the experiment. We observed that warming led to a reduced time-lag between the phytoplankton bloom and an MZP biomass maximum. MZP showed a significantly higher growth rate and an earlier biomass peak in the warm treatments while the biomass maximum was not affected. Increased pCO2 did not result in any significant effects on MZP biomass, growth rate, or species composition irrespective of the temperature, nor did we observe any significant interactions between CO2 and temperature. We attribute this to the high tolerance of this estuarine plankton community to fluctuations in pCO2, often resulting in CO2 concentrations higher than the predicted end-of-century concentration for open oceans. In contrast, warming can be expected to directly affect MZP and strengthen its coupling with phytoplankton by enhancing its grazing pressure.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2023-02-24
    Description: Aquatic ecosystems face a multitude of environmental stressors, including warming and acidification. While warming is expected to have a pronounced effect on plankton communities, many components of the plankton seem fairly robust towards realistic end-of-century acidification conditions. However, interactions of the two stressors and the inclusion of further factors such as nutrient concentration and trophic interactions are expected to change this outcome. We investigated the effects of warming and high CO2 on a nutrient-deplete late summer plankton community from the Kiel Fjord, Baltic Sea, using a mesocosm setup crossing two temperatures with a gradient of CO2. Phytoplankton and microzooplankton (MZP) growth rates as well as biomass, taxonomic composition, and grazing rates of MZP were analysed. We observed effects of high CO2, warming, and their interactions on all measured parameters. The occurrence and direction of the effects were dependent on the phytoplankton or MZP community composition. In addition, the abundance of small-sized phytoplankton was identified as one of the most important factors in shaping the MZP community composition. Overall, our results indicate that an estuarine MZP community used to strong natural fluctuations in CO2 can still be affected by a moderate increase in CO2 if it occurs in combination with warming and during a nutrient-deplete post-bloom situation. This highlights the importance of including trophic interactions and seasonality aspects when assessing climate change effects on marine zooplankton communities.
    Keywords: Baltic Sea; BIOACID; Biological Impacts of Ocean Acidification; Cell, diameter; Cell, length; Cell biovolume; ciliates; Dinoflagellates; global warming; mesocosm; Ocean acidification; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 1414 data points
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  • 4
    Publication Date: 2023-07-10
    Description: Aquatic ecosystems face a multitude of environmental stressors, including warming and acidification. While warming is expected to have a pronounced effect on plankton communities, many components of the plankton seem fairly robust towards realistic end-of-century acidification conditions. However, interactions of the two stressors and the inclusion of further factors such as nutrient concentration and trophic interactions are expected to change this outcome. We investigated the effects of warming and high CO2 on a nutrient-deplete late summer plankton community from the Kiel Fjord, Baltic Sea, using a mesocosm setup crossing two temperatures with a gradient of CO2. Phytoplankton and microzooplankton (MZP) growth rates as well as biomass, taxonomic composition, and grazing rates of MZP were analysed. We observed effects of high CO2, warming, and their interactions on all measured parameters. The occurrence and direction of the effects were dependent on the phytoplankton or MZP community composition. In addition, the abundance of small-sized phytoplankton was identified as one of the most important factors in shaping the MZP community composition. Overall, our results indicate that an estuarine MZP community used to strong natural fluctuations in CO2 can still be affected by a moderate increase in CO2 if it occurs in combination with warming and during a nutrient-deplete post-bloom situation. This highlights the importance of including trophic interactions and seasonality aspects when assessing climate change effects on marine zooplankton communities.
    Keywords: Balanion comatum; Baltic Sea; BIOACID; Biological Impacts of Ocean Acidification; ciliates; Ciliates, loricate; Ciliates, other; DATE/TIME; Day of experiment; Dinoflagellates; Dinoflagellates, athecate; Dinoflagellates, thecate; Dinophysis sp.; Euplotes sp.; global warming; Lohmaniella oviformis; mesocosm; Mesocosm label; Myrionecta rubra; Ocean acidification; Prorocentrum micans; Prorocentrum minimum; Strobilidium sp.; Strobilidium spp.; Strombidium sp.; Strombidium spp.; Suctoria; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 1656 data points
    Location Call Number Limitation Availability
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  • 5
    Publication Date: 2023-10-23
    Keywords: BIOACID; Biological Impacts of Ocean Acidification; Cell biovolume; ciliates; DATE/TIME; Day of experiment; Diameter; Event label; fatty acids; Fjord; Height; KOSMOS_2015; KOSMOS_2015_Mesocosm-M1; KOSMOS_2015_Mesocosm-M2; KOSMOS_2015_Mesocosm-M3; KOSMOS_2015_Mesocosm-M4; KOSMOS_2015_Mesocosm-M5; KOSMOS_2015_Mesocosm-M6; KOSMOS_2015_Mesocosm-M7; KOSMOS_2015_Mesocosm-M8; KOSMOS_2015_Mesocosm-M9; KOSMOS Bergen; MESO; Mesocosm experiment; Mesocosm label; Number; Ocean acidification; Phytoplankton; Species
    Type: Dataset
    Format: text/tab-separated-values, 4157 data points
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  • 6
    Publication Date: 2024-01-04
    Keywords: Balanion sp., biomass as carbon; BIOACID; Biological Impacts of Ocean Acidification; Ceratium furca, biomass as carbon; Ceratium fusus, biomass as carbon; Ceratium horridum, biomass as carbon; Ceratium lineatum, biomass as carbon; Ceratium longipes, biomass as carbon; Ceratium macroceros, biomass as carbon; Ceratium tripos, biomass as carbon; Chaetoceros curvisetus cyst, biomass as carbon; Chaetoceros sp., biomass as carbon; ciliates; Ciliates, biomass as carbon; Dactyliosolen fragilissimus, biomass as carbon; DATE/TIME; Day of experiment; Diatoms, biomass as carbon; Dinoflagellates, biomass as carbon; Dinophysis acuminata, biomass as carbon; Dinophysis acuta, biomass as carbon; Dinophysis norvegica, biomass as carbon; Dinophysis rotundata, biomass as carbon; Dinophyta spp., biomass as carbon; Event label; fatty acids; Fjord; Guinardia delicatula, biomass as carbon; Guinardia flaccida, biomass as carbon; Gymnodinium, biomass as carbon; Gymnodinium sp., biomass as carbon; Gyrodinium fusiforme, biomass as carbon; Katodinium sp., biomass as carbon; KOSMOS_2015; KOSMOS_2015_Mesocosm-M1; KOSMOS_2015_Mesocosm-M2; KOSMOS_2015_Mesocosm-M3; KOSMOS_2015_Mesocosm-M4; KOSMOS_2015_Mesocosm-M5; KOSMOS_2015_Mesocosm-M6; KOSMOS_2015_Mesocosm-M7; KOSMOS_2015_Mesocosm-M8; KOSMOS_2015_Mesocosm-M9; KOSMOS Bergen; Laboea, biomass as carbon; Lohmanniella oviformis, biomass as carbon; MESO; Mesocosm experiment; Mesocosm label; Myrionecta rubra, biomass as carbon; Ocean acidification; Phase; Phytoplankton; Phytoplankton, biomass as carbon; Proboscia alata, biomass as carbon; Protoperidinium depressum, biomass as carbon; Pseudo-nitzschia delicatissima, biomass as carbon; Pseudo-nitzschia seriata, biomass as carbon; Scuticociliates, biomass as carbon, fractionated; Skeletonema sp., biomass as carbon; Strombidium, biomass as carbon; Strombidium capitatum, biomass as carbon; Strombidium cf. emergens, biomass as carbon; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 4536 data points
    Location Call Number Limitation Availability
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  • 7
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    PANGAEA
    In:  Supplement to: Löder, Martin G J; Kraberg, Alexandra Claudia; Aberle, Nicole; Peters, Silvia; Wiltshire, Karen Helen (2010): Dinoflagellates and ciliates at Helgoland Roads, North Sea. Helgoland Marine Research, 13 pp, https://doi.org/10.1007/s10152-010-0242-z
    Publication Date: 2024-01-25
    Description: A monitoring programme for microzooplankton was started at the long-term sampling station ''Kabeltonne'' at Helgoland Roads (54°11.30' N; 7°54.00' E) in January 2007 in order to provide more detailed knowledge on microzooplankton occurrence, composition and seasonality patterns at this site and to complement the existing plankton data series. Ciliate and dinoflagellate cell concentration and carbon biomass were recorded on a weekly basis. Heterotrophic dinoflagellates were considerably more important in terms of biomass than ciliates, especially during the summer months. However, in early spring, ciliates were the major group of microzooplankton grazers as they responded more quickly to phytoplankton food availability. Mixotrophic dinoflagellates played a secondary role in terms of biomass when compared to heterotrophic species; nevertheless, they made up an intense late summer bloom in 2007. The photosynthetic ciliate Myrionecta rubra bloomed at the end of the sampling period. Due to its high biomass when compared to crustacean plankton especially during the spring bloom, microzooplankton should be regarded as the more important phytoplankton grazer group at Helgoland Roads. Based on these results, analyses of biotic and abiotic factors driving microzooplankton composition and abundance are necessary for a full understanding of this important component of the plankton.
    Keywords: BAH; German Bight, North Sea; HelgolandRoads_dinoflagellates_and_ciliates; Kabeltonne; LTER_Benthos; Macrobenthic long-term series in the German Bight; MON; Monitoring; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland)
    Type: Dataset
    Format: application/zip, 7 datasets
    Location Call Number Limitation Availability
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  • 8
    Publication Date: 2024-01-25
    Keywords: Acineta sp., biomass as carbon; Akashiwo sanguinea, biomass as carbon; Amphidinium cf. sphenoides, biomass as carbon; Amphidinium crassum, biomass as carbon; Askenasia regina, biomass as carbon; Askenasia sp., biomass as carbon; BAH; Balanion comatum, biomass as carbon, fractionated; Ceratium furca, biomass as carbon; Ceratium fusus, biomass as carbon; Ceratium horridum, biomass as carbon; Ceratium lineatum, biomass as carbon; Cyclotrichium sp., biomass as carbon; Cyrtostrombidium sp., biomass as carbon, fractionated; DATE/TIME; DEPTH, water; Didinium gargantua, biomass as carbon; Dinophysis sp., biomass as carbon; Diplopsalis cf. lenticula, biomass as carbon; Euplotes sp., biomass as carbon; Eutintinnus sp., biomass as carbon, fractionated; Favella ehrenbergii, biomass as carbon; German Bight, North Sea; Gonyaulax cf. spinifera, biomass as carbon; Gymnodinium chlorophorum, biomass as carbon; Gymnodinium sp., biomass as carbon, fractionated; Gyrodinium, biomass as carbon, fractionated; Gyrodinium calyptoglyphe, biomass as carbon; Gyrodinium sp., biomass as carbon, fractionated; HelgolandRoads_dinoflagellates_and_ciliates; Heterocapsa cf. niei, biomass as carbon; Heterocapsa cf. rotundata, biomass as carbon; Kabeltonne; Katodinium glaucum, biomass as carbon; Katodinium sp., biomass as carbon, fractionated; Laboea strobila, biomass as carbon; Leegaardiella cf. ovalis, biomass as carbon; Leegaardiella cf. sol, biomass as carbon; Lohmanniella oviformis, biomass as carbon; LTER_Benthos; Macrobenthic long-term series in the German Bight; Mesodinium pulex, biomass as carbon; Mesodinium sp., biomass as carbon, fractionated; Mesoporos sp., biomass as carbon; MON; Monitoring; Myrionecta rubra, biomass as carbon, fractionated; Nematodinium sp., biomass as carbon; Noctiluca scintillans, biomass as carbon; Peridiniella cf. danica, biomass as carbon; Polykrikos kofoidii, biomass as carbon; Prorocentrum balticum, biomass as carbon; Prorocentrum micans, biomass as carbon; Prorocentrum triestinum, biomass as carbon; Protoperidinium bipes, biomass as carbon; Protoperidinium brevipes, biomass as carbon; Protoperidinium cf. claudicans, biomass as carbon; Protoperidinium cf. conicum, biomass as carbon; Protoperidinium cf. divergens, biomass as carbon; Protoperidinium cf. leonis, biomass as carbon; Protoperidinium cf. minutum group, biomass as carbon; Protoperidinium cf. obtusum, biomass as carbon; Protoperidinium cf. pyriforme group, biomass as carbon; Protoperidinium cf. subinerme, biomass as carbon; Protoperidinium denticulatum, biomass as carbon; Protoperidinium depressum, biomass as carbon; Protoperidinium excentricum, biomass as carbon; Protoperidinium ovatum, biomass as carbon; Protoperidinium pellucidum, biomass as carbon; Protoperidinium pentagonum, biomass as carbon; Protoperidinium sp., biomass as carbon, fractionated; Protoperidinium thorianum, biomass as carbon; Pyrophacus horologium, biomass as carbon; Rimostrombidium sp., biomass as carbon; Salpingella sp., biomass as carbon; Scrippsiella, biomass as carbon; Scuticociliates, biomass as carbon, fractionated; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland); Spathidium sp., biomass as carbon; Spatulodinium pseudonoctiluca, biomass as carbon; Stenosemella sp., biomass as carbon; Strobilidium cf. neptunii, biomass as carbon; Strobilidium cf. sphaericum, biomass as carbon; Strobilidium cf. spiralis, biomass as carbon; Strobilidium sp., biomass as carbon, fractionated; Strombidinopsis sp., biomass as carbon, fractionated; Strombidium, biomass as carbon, fractionated; Strombidium capitatum, biomass as carbon; Strombidium cf. acutum, biomass as carbon; Strombidium cf. conicum, biomass as carbon; Strombidium cf. emergens, biomass as carbon; Strombidium cf. epidemum, biomass as carbon, fractionated; Strombidium cf. lynni, biomass as carbon; Strombidium cf. tressum, biomass as carbon; Strombidium sp., biomass as carbon, fractionated; Tiarina fusus, biomass as carbon; Tintinnidium cf. balechi, biomass as carbon; Tintinnid sp., biomass as carbon, fractionated; Tintinnopsis cf. radix, biomass as carbon; Tintinnopsis sp., biomass as carbon; Tontonia gracillima, biomass as carbon; Torodinium robustum, biomass as carbon, fractionated; Vorticella sp., biomass as carbon; Warnowia sp., biomass as carbon
    Type: Dataset
    Format: text/tab-separated-values, 3172 data points
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  • 9
    Publication Date: 2024-01-25
    Keywords: Acineta sp.; Akashiwo sanguinea; Amphidinium cf. sphenoides; Amphidinium crassum; Askenasia regina; Askenasia sp.; BAH; Balanion comatum, fractionated; Ceratium furca; Ceratium fusus; Ceratium horridum; Ceratium lineatum; Cyclotrichium sp.; Cyrtostrombidium sp., fractionated; DATE/TIME; DEPTH, water; Didinium gargantua; Dinophysis sp.; Diplopsalis cf. lenticula; Euplotes sp.; Eutintinnus sp., fractionated; Favella ehrenbergii; German Bight, North Sea; Gonyaulax cf. spinifera; Gymnodinium chlorophorum; Gymnodinium sp., fractionated; Gyrodinium, fractionated; Gyrodinium calyptoglyphe; Gyrodinium sp., fractionated; HelgolandRoads_dinoflagellates_and_ciliates; Heterocapsa cf. niei; Heterocapsa cf. rotundata; Kabeltonne; Katodinium glaucum; Katodinium sp., fractionated; Laboea strobila; Leegaardiella cf. ovalis; Leegaardiella cf. sol; Lohmanniella oviformis; LTER_Benthos; Macrobenthic long-term series in the German Bight; Mesodinium pulex; Mesodinium sp., fractionated; Mesoporos sp.; MON; Monitoring; Myrionecta rubra, fractionated; Nematodinium sp.; Noctiluca scintillans; Peridiniella cf. danica; Polykrikos kofoidii; Prorocentrum balticum; Prorocentrum micans; Prorocentrum triestinum; Protoperidinium bipes; Protoperidinium brevipes; Protoperidinium cf. claudicans; Protoperidinium cf. conicum; Protoperidinium cf. divergens; Protoperidinium cf. leonis; Protoperidinium cf. minutum group; Protoperidinium cf. obtusum; Protoperidinium cf. pyriforme group; Protoperidinium cf. subinerme; Protoperidinium denticulatum; Protoperidinium depressum; Protoperidinium excentricum; Protoperidinium ovatum; Protoperidinium pellucidum; Protoperidinium pentagonum; Protoperidinium sp., fractionated; Protoperidinium thorianum; Pyrophacus horologium; Quantitative phytoplankton method (Utermöhl, 1958); Rimostrombidium sp.; Salpingella sp.; Scrippsiella; Scuticociliates, fractionated; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland); Spathidium sp.; Spatulodinium pseudonoctiluca; Stenosemella sp.; Strobilidium cf. neptunii; Strobilidium cf. sphaericum; Strobilidium cf. spiralis; Strobilidium sp., fractionated; Strombidinopsis sp., fractionated; Strombidium, fractionated; Strombidium capitatum; Strombidium cf. acutum; Strombidium cf. conicum; Strombidium cf. emergens; Strombidium cf. epidemum, fractionated; Strombidium cf. lynni; Strombidium cf. tressum; Strombidium sp., fractionated; Tiarina fusus; Tintinnidium cf. balechi; Tintinnid sp., fractionated; Tintinnopsis cf. radix; Tintinnopsis sp.; Tontonia gracillima; Torodinium robustum, fractionated; Vorticella sp.; Warnowia sp.
    Type: Dataset
    Format: text/tab-separated-values, 5978 data points
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  • 10
    Publication Date: 2024-01-25
    Keywords: BAH; Concentration per cell; German Bight, North Sea; HelgolandRoads_site; Kabeltonne; LTER_Benthos; Macrobenthic long-term series in the German Bight; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland); Species
    Type: Dataset
    Format: text/tab-separated-values, 244 data points
    Location Call Number Limitation Availability
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