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  • PANGAEA  (13)
  • AGU (American Geophysical Union)  (1)
  • 2020-2024  (13)
  • 2015-2019  (1)
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Year
  • 1
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    Coastal N 2 fixation rates coincide spatially with N loss in the Humboldt Upwelling System off Peru (2023)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-02-07
    Description: Marine nitrogen (N2) fixation supports significant primary productivity in the global ocean. However, in one of the most productive regions of the world ocean, the northern Humboldt Upwelling System (HUS), the magnitude and spatial distribution of this process remains poorly characterized. This study presents a spatially resolved dataset of N2 fixation rates across six coastal transects of the northern HUS off Peru (8°S – 16°S) during austral summer. N2 fixation rates were detected throughout the waters column including within the OMZ between 12°S and 16°S. N2 fixation rates were highest where the subsurface Oxygen Minimum Zone (OMZ, O2 〈20 µmol L-1) was most intense and estimated nitrogen (N) loss was highest. There, rates were measured throughout the water column. Hence the vertical and spatial distribution of rates indicates colocation of N2 fixation with N loss in the coastal productive waters of the northern HUS. Despite high phosphate and total dissolvable iron (TdFe) concentrations throughout the study area, N2 fixation was still generally low (1.19 ± 3.81 nmol L-1 d-1) and its distribution could not be directly explained by these two factors. Our results suggest that the distribution was likely influenced by a complex interplay of environmental factors including phytoplankton biomass and organic matter availability, and potentially iron, or other trace metal (co)-limitation of both N2 fixation and primary production. In general, our results support previous conclusions that N2 fixation in the northern HUS plays a minor role as a source of new N and to replenish the regional N loss. Key Points: A north-to-south pattern in N2 fixation rates was observed implying increased N turnover between 12°S and 16°S where N loss was pronounced Highest N2 fixation rates were measured in coastal productive waters above and within the OMZ, showing no clear relationship with Fe or P The magnitude of N2 fixation was low compared to predictions, estimated to account for ∼0.3% of primary production and 〈2% of local N loss
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
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    KOSMOS 2018 Gran Canaria mesocosm study on artificial upwelling: 14C primary production (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-15
    Description: Size fractionated primary productivity rate measurements through 14C radioisotope incorporation rates from a KOSMOS mesocosm experiment carried out in the frame work of the Ocean Artificial Upwelling project. The experiment was performed in the North-East Atlantic Ocean off the coast of Gran Canaria in autumn 2018 and lasted for 39 days. In this study we investigated the effect of different intensities of artificial upwelling combined with two upwelling modes (recurring additions versus one singular addition) on the phytoplankton community. Data shown includes production rates of dissolved organic carbon, particulate organic carbon in 3 size fractions (0.2-2 µm, 2-20 µm, 〉20 µm) and total organic carbon.
    Keywords: 14C incorporation; 14C-POC; artificial upwelling; Calculated; Canarias Sea; carbon sequestration; Day of experiment; Depth, water, experiment, bottom/maximum; Depth, water, experiment, top/minimum; Event label; Field experiment; Food web; KOSMOS_2018; KOSMOS_2018_Mesocosm-A; KOSMOS_2018_Mesocosm-M1; KOSMOS_2018_Mesocosm-M2; KOSMOS_2018_Mesocosm-M3; KOSMOS_2018_Mesocosm-M4; KOSMOS_2018_Mesocosm-M5; KOSMOS_2018_Mesocosm-M6; KOSMOS_2018_Mesocosm-M7; KOSMOS_2018_Mesocosm-M8; KOSMOS_2018_Mesocosm-M9; KOSMOS Gran Canaria; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Ocean Artificial Upwelling; Ocean-artUp; Phytoplankton; primary production; Primary production of carbon, organic, dissolved; Primary production of carbon, organic, dissolved, standard deviation; Primary production of carbon, organic, particulate; Primary production of carbon, organic, total; Sampling date/time, experiment; Treatment; Type of study
    Type: Dataset
    Format: text/tab-separated-values, 3342 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    KOSMOS mesocosm experiment Gran Canaria 2019 on testing the effect of nutrient composition (Si:N) during artificial upwelling: primary production, flow cytometry, photophysiology, internal nutrient storage and diatoms (2023)
    PANGAEA
    Details
    Publication Date: 2024-01-29
    Description: In this study we investigated the effect of artificial upwelling with different Si:N ratios on a natural oligotrophic plankton community. Data on primary production, flow cytometry, photophysiology, internal nutrient storage, diatom size, diatom silicification and diatom carbon density from the mesocosms experiment conducted on the Canary Islands in autumn 2019. Values are depth-integrated averages in (mostly) 2-days intervals over the course of 33 days. The upwelling treatment started on day 6. All samples were depth integrated (0-2.5m). Oxygen production and respiration rates were measured through incubations and Winkler titrations. Flow cytometry and photophysiology samples were measured fresh. Parameters used for diatom per capita size, silicification and carbon density measurements were taken from the following published datasets on the same experiment: https://doi.org/10.1594/PANGAEA.954852 and https://doi.org/10.1594/PANGAEA.951417
    Keywords: artificial upwelling; Canarias Sea; carbon dioxide removal; CDRmare; DAM CDRmare - Test-ArtUp: Road testing ocean artificial upwelling; DATE/TIME; Day of experiment; DEPTH, water, experiment; Diatom, cell biovolume; Diatom carbon density; diatoms; Diatoms, biogenic silicate, per cell; Electron transport rate; Event label; Field experiment; Flow cytometry; GC2019; Gross community production/respiration rate, oxygen, ratio; Gross community production of oxygen; KOSMOS; KOSMOS_2019; KOSMOS_2019_Mesocosm-M1; KOSMOS_2019_Mesocosm-M2; KOSMOS_2019_Mesocosm-M3; KOSMOS_2019_Mesocosm-M4; KOSMOS_2019_Mesocosm-M5; KOSMOS_2019_Mesocosm-M6; KOSMOS_2019_Mesocosm-M7; KOSMOS_2019_Mesocosm-M8; KOSMOS Gran Canaria; Maximum photochemical quantum yield of photosystem II; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Microplankton; Microplankton, forward scatter, per cell; Microplankton, red fluorescence, per cell; Microplankton, total forward scatter; Microplankton, total red fluorescence; Nanoeukaryotes; Nanoplankton, forward scatter, per cell; Nanoplankton, red fluorescence, per cell; Nanoplankton, total forward scatter; Nanoplankton, total red fluorescence; negative emission technology; Net community production of oxygen; Nitrate; Nitrite; Ocean Artificial Upwelling; Ocean-artUp; ocean fertilization; Phase description; Phosphate; photophysiology; Phytoplankton; Picoeukaryotes; plankton community; Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways; Respiration rate, oxygen, community; Si:N; Silicate; silicic acid; Sum; Synechococcus; Test-ArtUp; Treatment; Type of study
    Type: Dataset
    Format: text/tab-separated-values, 4925 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Bacterial and eukaryotic operational taxonomic units (OTU) in sea ice, water and deep-sea sediment samples of the Central Arctic collected during POLARSTERN cruise ARK-XXVII/3 (IceArc) in 2012 (2017)
    PANGAEA
    In:  Supplement to: Rapp, Josephine Z; Fernández-Méndez, Mar; Bienhold, Christina; Boetius, Antje (2018): Effects of ice-algal aggregate export on the connectivity of bacterial core communities in the central Arctic Ocean. Frontiers in Microbiology, 9, https://doi.org/10.3389/fmicb.2018.01035
    Details
    Publication Date: 2024-01-19
    Description: We aimed to explore the community composition and turnover of eukaryotic and bacterial microorganisms associated with ice-associated and sinking algal aggregates, as well as their similarity to potential source communities of sea ice, water and deep-sea sediments using Illumina tag sequencing. We sampled algae aggregates growing in melt ponds on sea ice, deposited algae aggregates at the seafloor in more than 4000 m water depth, sea ice, upper water column, sediment surface and the gut content of holothurians feeding on the deposits. For Illumina sequencing, the Amplicon libraries of the bacterial V4-V6 region of the 16S rRNA gene and the eukaryotic V4 region of the 18S rRNA gene were generated according to the protocol recommended by Illumina (16S Metagenomic Sequencing Library Preparation, Part # 15044223, Rev. B). For Bacteria we selected the S-D-Bact-0564-a-S-15 and S-*Univ-1100-a-A-15 primer pair based on a primer evaluation by Klindworth et al. (2013, doi:10.1093/nar/gks808) and for Eukaryota the TAReukFWD1 and TAReukREV3 primers (Stoeck et al., 2010; doi:10.1111/j.1365-294X.2009.04480.x). Libraries were sequenced on an Illumina MiSeq platform in 2x300 cycles paired end runs. For Sequence data cleaning & processin, we used cutadapt (v. 1.8.1; Martin, 2011; doi:10.14806/ej.17.1.200) for the removal of primer sequences and a custom awk script to ensure the correct orientation of reads prior to merging. For merging forward and reverse reads we used pear (v. 0.9.5; Zhang et al., 2014; doi:10.1093/bioinformatics/btt593) and trimmed and quality filtered all sequences using trimmomatic (v. 0.32; Bolger et al., 2014; doi:10.1093/bioinformatics/btu170). We reassured correct formatting of the fastq files with bbmap (v. 34.00; B. Bushnell - sourceforge.net/projects/bbmap) before clustering the reads into OTUs by applying a local clustering threshold of d=1 and the fastidious option in swarm (v. 2.1.1; Mahé et al., 2015; doi:10.7717/peerj.1420). Subsequently, we used the SINA aligner (v. 1.2.10; Pruesse et al., 2012; doi:10.1093/bioinformatics/bts252) to align and classify the seed sequence of each OTU with the SILVA SSU database release 123 (Quast et al., 2013; doi:10.1093/nar/gks1219). OTUs that were classified as chloroplasts, mitochondria, archaea, or those that could not be classified at domain level were removed from further analysis. OTUs that were classified as bacteria within the eukaryotic dataset and vice versa, were removed as well. Furthermore, we removed all absolute singletons, OTUs that were only represented by a single sequence across the complete dataset. Filtering and removal of absolute singletons resulted in a final number of 8,869 bacterial and 7,627 eukaryotic OTUs. All further analyses were performed on these processed OTU abundance tables.
    Keywords: ABYSS; Assessment of bacterial life and matter cycling in deep-sea surface sediments; File content; File format; File name; File size; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 20 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Nitrogen and carbon fixation rates and organic matter concentrations from water column samples during RV Maria S. Merian cruise MSM80 off the northern Humboldt Upwelling System (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-25
    Description: This data is part of the BMBF projects CUSCO (Coastal Upwelling Systems in a Changing Ocean) and BioTip subproject Humboldt Tipping. Here we report water column nitrogen fixation, carbon fixation rates and particulate organic matter composition from the upper 300 m. Data was collected during cruise number MSM80 with research vessel Maria S. Merian from 23.12.2018 - 30.01.2019 (from Panama to Valparaiso) in the Humboldt Upwelling system off the Eastern Tropical south Pacific. Samples were taken by CTD- rosette sampler from different depths, injected with 15N labelled N2 gas based on the modified dissolution method (Großkopf et al., 2012 and Mohr et al., 2010) and additionally 13C labeled sodium bicarbonate. Samples were incubated for 24 hours at light intensities that resemble the in situ light conditions. After incubation a volume of the sample (20 - 1500 ml) was filtered onto a pre-combusted Whatman GF/75 filter. Filters were frozen, transported to the institute on dry ice and measured on a mass spectrometer for Delta15N and 13C (Delta V Advantage Isotope Ratio MS, ThermoFisher) with the ConFlo IV interface (ThermoFisher). Nitrogen fixation rates were calculated based on Montoya et al (1996) while carbon fixation rates were calculated based on the equation by Slawyk et al. (1977). Limits of detection (LOD) and minimum quantifiable rates (MQR) for Nitrogen fixation rates were calculated according to the criteria described by White et al. (2020) and standard error propagation methods described in Gradoville et al. (2017) respectively. POP and Biogenic silica concentrations were measured spectrophotometrically following Hansen and Koroleff (1999).
    Keywords: after Slawyk et al. (1977); after White et al. (2020); Biogenic silica; Calculated according to Montoya et al. (1996); Carbon, organic, particulate; carbon fixation; Carbon fixation rate; Carbon fixation rate, standard deviation; Coastal Upwelling System in a Changing Ocean; CTD/Rosette; CTD-RO; CUSCO; CUSCO-1; DATE/TIME; Delta V Advantage Isotope Ratio Mass spectrometer with ConFlo IV interface (ThermoFisher); DEPTH, water; eastern tropical South Pacific; Event label; Humboldt Current System; HumboldtTipping; LATITUDE; LONGITUDE; Maria S. Merian; MSM80; MSM80_102-8; MSM80_1-1; MSM80_14-1; MSM80_18-1; MSM80_22-1; MSM80_30-1; MSM80_38-1; MSM80_43-1; MSM80_46-22; MSM80_53-1; MSM80_63-1; MSM80_65-1; MSM80_67-1; MSM80_70-1; MSM80_7-1; MSM80_80-1; MSM80_82-1; MSM80_89-1; MSM80_90-1; MSM80_91-1; MSM80_92-1; MSM80_93-1; MSM80_94-6; MSM80_95-1; MSM80_96-1; MSM80_99-1; Nitrogen, organic, particulate; nitrogen fixation; Nitrogen fixation rate; Nitrogen fixation rate, limit of detection; Nitrogen fixation rate, minimum quantifiable rate; Nitrogen fixation rate, standard deviation; particulate organic matter composition; particulate organic matter concentration; Phosphorus, organic, particulate; Pressure, water; Sozial-ökologische Kipppunkte im Humboldt-System; Spectrophotometry; Station label; Transect; Upwelling; δ13C, particulate organic carbon; δ15N, particulate organic nitrogen
    Type: Dataset
    Format: text/tab-separated-values, 1538 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Dissolved inorganic and organic nutrients from water column samples during RV Maria S. Merian cruise MSM80 off the northern Humboldt Upwelling System (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-25
    Description: This data is part of the BMBF projects CUSCO (Coastal Upwelling Systems in a Changing Ocean) and BioTip subproject Humboldt Tipping. Data was collected during cruise number MSM80 with research vessel Maria S. Merian from 23.12.2018 - 30.01.2019 (from Panama to Valparaiso) in the Humboldt Upwelling system off the Eastern Tropical south Pacific. Samples were taken by CTD- rosette sampler from different depths and analysed onboard for dissolved inorganic nutrients and total dissolved nutrients. Triplicate nutrient samples were analysed for concentrations with an autosampler (XY-2 autosampler, SEAL Analytical) and a continuous flow analyzer (QUAAtro Autoanalyzer, SEAL Analytical) using standard colorimetric and flourometric methods by Kastriot Qelaj. Dissolved organic nutrients were calculated as the difference of the two for respective nitrogen and phosphorous nutrients. Phosphate was measured according to Murphy and Riley (1962). Ammonium was measured fluorometrically based on Holmes et al. (1999). An empty cell means that corresponding nutrient samples were not taken for the respective depth.
    Keywords: 56-3; Ammonium; Calculated; Coastal Upwelling System in a Changing Ocean; CTD/Rosette; CTD-RO; CUSCO; CUSCO-1; DATE/TIME; DEPTH, water; Determination of phosphate (Murphy & Riley, 1962); Dissolved Inorganic Nutrients; dissolved organic nitrogen; dissolved organic phosphorus; eastern tropical South Pacific; Event label; Fluorometric; Humboldt Current System; HumboldtTipping; LATITUDE; LONGITUDE; Maria S. Merian; MSM80; MSM80_10-1; MSM80_102-1; MSM80_102-8; MSM80_104-1; MSM80_106-1; MSM80_1-1; MSM80_13-1; MSM80_14-1; MSM80_15-1; MSM80_16-1; MSM80_18-1; MSM80_20-1; MSM80_22-1; MSM80_25-1; MSM80_28-1; MSM80_30-1; MSM80_31-1; MSM80_32-1; MSM80_33-1; MSM80_34-1; MSM80_36-1; MSM80_38-1; MSM80_40-1; MSM80_4-1; MSM80_41-2; MSM80_43-1; MSM80_45-1; MSM80_46-10; MSM80_46-14; MSM80_46-19; MSM80_46-22; MSM80_46-5; MSM80_48-1; MSM80_49-1; MSM80_50-1; MSM80_51-1; MSM80_53-1; MSM80_56-4; MSM80_58-1; MSM80_60-1; MSM80_63-1; MSM80_65-1; MSM80_66-1; MSM80_67-1; MSM80_68-2; MSM80_69-1; MSM80_70-1; MSM80_7-1; MSM80_74-1; MSM80_78-1; MSM80_80-1; MSM80_80-12; MSM80_80-16; MSM80_80-5; MSM80_80-9; MSM80_82-1; MSM80_83-1; MSM80_85-1; MSM80_88-1; MSM80_89-1; MSM80_90-1; MSM80_91-1; MSM80_92-1; MSM80_93-1; MSM80_94-6; MSM80_95-1; MSM80_96-1; MSM80_99-1; Nitrate; Nitrite; Nitrogen, organic, dissolved; Nitrogen, total dissolved; Phosphate; Phosphorus, organic, dissolved; Phosphorus, total dissolved; Pressure, water; SEAL Analytical, continuous flow analyser QuAAtro; Silicate; Sozial-ökologische Kipppunkte im Humboldt-System; Station label; Transect
    Type: Dataset
    Format: text/tab-separated-values, 6028 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Trace metal data from water column samples during RV Maria S. Merian cruise MSM80 off the northern Humboldt Upwelling System (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-25
    Description: This data is part of the BMBF projects CUSCO (Coastal Upwelling Systems in a Changing Ocean) and BioTip subproject Humboldt Tipping. The file contains total dissolvable trace metal concentrations (Fe, Cd, Ni, Cu, Zn and Co) from various depths of sampled stations. Trace metal concentrations were determined via Inductively coupled plasma mass spectrometry (ICP-MS, Element XR, ThermoFisher Scientific) after pre-concentration as per Rapp et al. (2017).
    Keywords: Cadmium, dissolvable, total; Coastal Upwelling System in a Changing Ocean; Cobalt, dissolvable, total; Copper, dissolvable, total; CTD/Rosette; CTD-RO; CUSCO; CUSCO-1; DATE/TIME; DEPTH, water; Event label; HumboldtTipping; Inductively coupled plasma mass spectrometer (ICP-MS), ThermoFisher Scientific, Element XR; Iron, dissolvable, total; LATITUDE; LONGITUDE; Maria S. Merian; MSM80; MSM80_102-8; MSM80_1-1; MSM80_14-1; MSM80_15-1; MSM80_18-1; MSM80_22-1; MSM80_30-1; MSM80_38-1; MSM80_43-1; MSM80_46-22; MSM80_51-1; MSM80_53-1; MSM80_63-1; MSM80_65-1; MSM80_67-1; MSM80_70-1; MSM80_7-1; MSM80_80-1; MSM80_82-1; MSM80_94-6; MSM80_95-1; MSM80_96-1; MSM80_99-1; Nickel, dissolvable, total; Pressure, water; Sozial-ökologische Kipppunkte im Humboldt-System; Station label; Transect; Zinc, dissolvable, total
    Type: Dataset
    Format: text/tab-separated-values, 873 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    KOSMOS mesocosm experiment Gran Canaria 2019 on testing the effect of nutrient composition (Si:N) during artificial upwelling: microzooplankton, mesozooplankton and toxins (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Microzooplankton (microZP, protists) and mesozooplankton (mesoZP, metazoans) abundances and biomass as well as presence of domoic acid (DA, phycotoxin) during the mesocosm experiment in the Canary Islands in autumn 2019. Depth-integrated (0-2.5m) water samples were taken over the course of 33 days, in 2-day intervals for microZP and mesoZP and 4-day intervals for DA. MicroZP was assessed by Utermöhl light microscopy and its biomass estimated using biovolume to carbon conversion factors from the literature. MesoZP samples were split into three size fractions (55-200, 200-500 and 〉500 µm), preserved with 70% ethanol and assessed under a stereo microscope. For biomass, mesoZP were measured in an element analyser. MesoZP data is provided for copepods only (dominant group) and all metazoan zooplankton combined (mainly copepods and appendicularians). For DA, particulate matter was filtered (〉0.7µm) and analysed via liquid chromatography and tandem mass spectrometry. The upwelling treatment started on day 6. Methodological details in Goldenberg et al. (doi:10.3389/fmars.2022.1015188) and Goldenberg et al. (under review).
    Keywords: AQUACOSM; artificial upwelling; Canarias Sea; carbon dioxide removal; CDRmare; Ciliates, heterotrophic; Ciliates, heterotrophic, biomass as carbon; Copepoda; Copepoda, biomass as carbon; Copepoda, nauplii; DAM CDRmare - Test-ArtUp: Road testing ocean artificial upwelling; DATE/TIME; Day of experiment; Depth, water, experiment, bottom/maximum; Depth, water, experiment, top/minimum; diatoms; Dinoflagellates; Dinoflagellates, biomass as carbon; Domoic acid; Domoic acid per unit mass particulate organic carbon; Event label; Field experiment; GC2019; KOSMOS; KOSMOS_2019; KOSMOS_2019_Mesocosm-M1; KOSMOS_2019_Mesocosm-M2; KOSMOS_2019_Mesocosm-M3; KOSMOS_2019_Mesocosm-M4; KOSMOS_2019_Mesocosm-M5; KOSMOS_2019_Mesocosm-M6; KOSMOS_2019_Mesocosm-M7; KOSMOS_2019_Mesocosm-M8; KOSMOS Gran Canaria; MESO; mesocosm experiment; Mesocosm experiment; Mesocosm label; Mesozooplankton; Mesozooplankton, biomass as carbon; negative emission technology; Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean; Ocean Artificial Upwelling; Ocean-artUp; ocean fertilization; Phase description; plankton food web; Protista, heterotrophic; Protista, heterotrophic, biomass as carbon; Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways; Size fraction 〉 500 µm; Size fraction 〉 55 µm; Size fraction 200-500 µm; Size fraction 55-200 µm; Test-ArtUp; Treatment; trophic transfer; Type of study
    Type: Dataset
    Format: text/tab-separated-values, 4332 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    KOSMOS mesocosm experiment Gran Canaria 2019 on testing the effect of nutrient composition (Si:N) during artificial upwelling: phytoplankton microscopy (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Abundance and biovolume data of the community of larger phytoplankton from the mesocosm experiment conducted in the Canary Islands in autumn 2019. Depth-integrated (0-2.5m) water samples were taken in 2-days intervals over the course of 33 days and autotrophic taxa assessed to the lowest taxonomic level possible using Utermöhl microscopy. Only taxa larger than approx. 〉5 µm could be considered with this method. Biovolume was calculated based on geometrical measurements (dominant taxa) or the literature (rare taxa). Carbon biomass estimates were purposefully not provided, as the standard literature conversion factors from biovolume to carbon biomass did not apply to many of our samples, likely due to low carbon density within cells. Predominantly mixotrophic or heterotrophic taxa are not provided in this dataset. The upwelling treatment started on day 6. Methodological details in Goldenberg et al. (doi:10.3389/fmars.2022.1015188).
    Keywords: Amphora sp.; Amphora sp., biovolume; AQUACOSM; artificial upwelling; Calculated; Canarias Sea; carbon dioxide removal; CDRmare; Cerataulina pelagica; Cerataulina pelagica, biovolume; Chaetoceros cf. aequatorialis; Chaetoceros cf. aequatorialis, biovolume; Chaetoceros cf. compressus; Chaetoceros cf. compressus, biovolume; Chaetoceros cf. curvisetus; Chaetoceros cf. curvisetus, biovolume; Chaetoceros cf. lauderi; Chaetoceros cf. lauderi, biovolume; Chaetoceros cf. lorenzianus; Chaetoceros cf. lorenzianus, biovolume; Chaetoceros cf. tenuissimus; Chaetoceros cf. tenuissimus, biovolume; Chaetoceros decipiens; Chaetoceros decipiens, biovolume; Chaetoceros densus; Chaetoceros densus, biovolume; Chrysochromulina sp.; Chrysochromulina sp., biovolume; Climacodium cf. frauenfeldianum; Climacodium cf. frauenfeldianum, biovolume; Coccolithophoridae, biovolume; Coccolithophoridae, total; Coscinodiscus cf. pavillardii; Coscinodiscus cf. pavillardii, biovolume; Coscinodiscus sp.; Coscinodiscus sp., biovolume; Cylindrotheca closterium; Cylindrotheca closterium, biovolume; Cylindrotheca sp.; Cylindrotheca sp., biovolume; Dactyliosolen cf. blavyanus; Dactyliosolen cf. blavyanus, biovolume; Dactyliosolen cf. fragilissimus; Dactyliosolen cf. fragilissimus, biovolume; DAM CDRmare - Test-ArtUp: Road testing ocean artificial upwelling; DATE/TIME; Day of experiment; diatoms; Diatoms; Diatoms, biovolume; Dictyocha fibula; Dictyocha fibula, biovolume; Diploneis sp.; Diploneis sp., biovolume; Event label; Flagellates; Flagellates, biovolume; Flagellates indeterminata, oval; Flagellates indeterminata, oval, biovolume; GC2019; Guinardia delicatula; Guinardia delicatula, biovolume; Guinardia striata; Guinardia striata, biovolume; Hemiaulus cf. sinensis; Hemiaulus cf. sinensis, biovolume; KOSMOS; KOSMOS_2019; KOSMOS_2019_Mesocosm-M1; KOSMOS_2019_Mesocosm-M2; KOSMOS_2019_Mesocosm-M3; KOSMOS_2019_Mesocosm-M4; KOSMOS_2019_Mesocosm-M5; KOSMOS_2019_Mesocosm-M6; KOSMOS_2019_Mesocosm-M7; KOSMOS_2019_Mesocosm-M8; KOSMOS Gran Canaria; Leptocylindrus danicus; Leptocylindrus danicus, biovolume; Leptocylindrus minimus; Leptocylindrus minimus, biovolume; Licmophora sp.; Licmophora sp., biovolume; MESO; Mesocosm experiment; Mesocosm label; Microscopy; Minutocellus polymorphus; Minutocellus polymorphus, biovolume; negative emission technology; Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean; Nitzschia cf. acicularis; Nitzschia cf. acicularis, biovolume; Number of taxa; Ocean Artificial Upwelling; Ocean-artUp; ocean fertilization; Phaeocystis cf. globosa; Phaeocystis cf. globosa, biovolume; Phaeocystis sp.; Phaeocystis sp., biovolume; Phase description; Phytoplankton, biovolume; Phytoplankton, total; Pielou evenness index; plankton community; Pleurosigma sp.; Pleurosigma sp., biovolume; Proboscia sp.; Proboscia sp., biovolume; Pseudo-nitzschia delicatissima; Pseudo-nitzschia delicatissima, biovolume; Pseudo-nitzschia pungens; Pseudo-nitzschia pungens, biovolume; Pseudo-nitzschia sp.; Pseudo-nitzschia sp., biovolume; Pseudo-nitzschia subcurvata; Pseudo-nitzschia subcurvata, biovolume; Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways; Rhizosolenia cf. imbricata; Rhizosolenia cf. imbricata, biovolume; Rhizosolenia cf. setigera; Rhizosolenia cf. setigera, biovolume; Rhizosolenia sp.; Rhizosolenia sp., biovolume; Shannon Diversity Index; Si:N; silicic acid; Skeletonema sp.; Skeletonema sp., biovolume; Striatella cf. unipunctata; Striatella cf. unipunctata, biovolume; Sum; Test-ArtUp; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 14416 data points
    Location Call Number Limitation Availability
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  • 10
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    KOSMOS mesocosm experiment Gran Canaria 2019 on testing the effect of nutrient composition (Si:N) during artificial upwelling: export flux and sinking particle properties (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Export data from the mesocosm experiment conducted in the Canary Islands in autumn 2019. Sinking matter was collected in 2-days intervals over the course of 33 days from the mesocosm sediment traps (4 m depth). Sediment samples were processed and subsampled for duplicate measurements of particulate organic carbon (POC), nitrogen (PON), phosphorus (POP) and biogenic silica (BSi). Elemental mass fluxes in µmol L-1 were calculated by normalizing to the mesocosm volume. They were then either normalized to the time between sample collection (48 h) to obtain daily mass fluxes (µmol L-1 d-1), or added up to obtain cumulative mass fluxes (µmol L-1). Another set of sediment subsamples was analyzed for particle sinking velocities, sizes and porosities (bidaily) and microbial remineralization rates (every 4 days).
    Keywords: AQUACOSM; artificial upwelling; Biogenic silica, flux, cumulative; Biogenic silica, flux per day; Biogenic silica, weight fraction; Canarias Sea; Carbon, organic, particulate, flux, cumulative; Carbon, organic, particulate, flux per day; Carbon/Nitrogen, molar ratio; carbon dioxide removal; CDRmare; DAM CDRmare - Test-ArtUp: Road testing ocean artificial upwelling; DATE/TIME; Day of experiment; DEPTH, water, experiment; diatoms; Equivalent spherical diameter; Event label; GC2019; KOSMOS; KOSMOS_2019; KOSMOS_2019_Mesocosm-M1; KOSMOS_2019_Mesocosm-M2; KOSMOS_2019_Mesocosm-M3; KOSMOS_2019_Mesocosm-M4; KOSMOS_2019_Mesocosm-M5; KOSMOS_2019_Mesocosm-M6; KOSMOS_2019_Mesocosm-M7; KOSMOS_2019_Mesocosm-M8; KOSMOS Gran Canaria; MESO; Mesocosm experiment; Mesocosm label; negative emission technology; Network of Leading European AQUAtic MesoCOSM Facilities Connecting Mountains to Oceans from the Arctic to the Mediterranean; Nitrogen, organic, particulate, flux, cumulative; Nitrogen, organic, particulate, flux per day; Nitrogen/Phosphorus, molar ratio; Ocean Artificial Upwelling; Ocean-artUp; ocean fertilization; Particle porosity; Phase description; Phosphorus, organic, particulate, flux, cumulative; Phosphorus, organic, particulate, flux per day; Remineralisation rate of carbon per day; Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways; Si:N; silicic acid; Silicon/Nitrogen, molar ratio; Sinking velocity; Size fraction 100-250 µm; Size fraction 250-1000 µm; Size fraction 40-100 µm; Test-ArtUp; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 3164 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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