GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • BIOACID; Biological Impacts of Ocean Acidification  (2)
  • ABYSS; Arctic Ocean; ARK-XXVIII/2; Aromaticity index; Assessment of bacterial life and matter cycling in deep-sea surface sediments; Biological production index; Carboxyl-rich alicyclic formulas; Date/Time of event; deep sea sediment; Degradation index; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dissolved Organic Matter; Double bond equivalent; EGI; Elevation of event; Event label; Fourier-transform ion cyclotron mass spectrometry; Fram Strait; HAUSGARTEN 2013; HG_I; HG_II; HGI; HGIV; HGIX; HGVI; KH; Latitude of event; Light frame on-sight keyspecies investigation; LOKI; Longitude of event; Maria S. Merian; Mass spectrometer Solarix FT-ICR; Molecular lability boundary; MSM29; MSM29_424-3; MSM29_425-3; MSM29_427-2; MSM29_432-2; MSM29_439-3; MSM29_443-2; MSM29_450-2; MUC; MultiCorer; Multicorer with television; N_4; North Greenland Sea; Percentage of total formulae; Polarstern; porewater; PS85; PS85/436-1; PS85/441-1; PS85/445-1; PS85/454-3; PS85/454-4; PS85/454-5; PS85/460-4; PS85/463-1; PS85/464-1; PS85/465-4; PS85/468-1; PS85/469-2; PS85/470-3; PS85/473-3; Ratio; S_1; S_2; S_3; Sample ID; Station label; TVMUC  (1)
  • ABYSS; Arctic Ocean; Assessment of bacterial life and matter cycling in deep-sea surface sediments; deep sea sediment; Dissolved Organic Matter; Fourier-transform ion cyclotron mass spectrometry; Fram Strait; porewater  (1)
Document type
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Dissolved organic matter molecular composition and concentrations from a large scale mesocosm study KOSMOS 2013 Kristineberg) on ocean acidification (2015)
    PANGAEA
    In:  Supplement to: Zark, Maren; Riebesell, Ulf; Dittmar, Thorsten (2015): Effects of ocean acidification on marine dissolved organic matter are not detectable over the succession of phytoplankton blooms. Science Advances, 1(9), e1500531-e1500531, https://doi.org/10.1126/sciadv.1500531
    Details
    Publication Date: 2023-02-24
    Description: Marine dissolved organic matter (DOM) represents one of the largest active carbon reservoirs on Earth. Changes in pool size or composition could have major impacts on the global carbon cycle. Ocean acidification is a potential driver for these changes because it influences marine primary production and heterotrophic respiration. Here we show that ocean acidification as expected for a 'business-as-usual' emission scenario in the year 2100 (900 µatm) does not affect the DOM pool with respect to its size and molecular composition. We applied ultrahigh-resolution mass spectrometry to monitor the production and turnover of 7,360 distinct molecular DOM features in an unprecedented long-term mesocosm study in a Swedish Fjord, covering a full cycle of marine production. DOM concentration and molecular composition did not differ significantly between present-day and year 2100 CO2 levels. Our findings are likely applicable to other coastal and productive marine ecosystems in general.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Dissolved organic matter dynamics during an oligotrophic ocean acidification experiment using large-scale mesocosms (KOSMOS 2014) (2017)
    PANGAEA
    In:  Supplement to: Zark, Maren; Broda, Nadine; Hornick, Thomas; Grossart, Hans-Peter; Riebesell, Ulf; Dittmar, Thorsten (2017): Ocean Acidification Experiments in Large-Scale Mesocosms Reveal Similar Dynamics of Dissolved Organic Matter Production and Biotransformation. Frontiers in Marine Science, https://doi.org/10.3389/fmars.2017.00271
    Details
    Publication Date: 2023-02-24
    Description: We investigated the effects of ocean acidification on the DOM pool in the open subtropical North Atlantic Ocean off the coast of Gran Canaria during an oligotrophic phase and after artificial upwelling. Future ocean conditions were simulated in large-scale mesocosms with step-wise increasing pCO2 levels from 450 to 1030 µatm. While we observed no significant effect of ocean acidification on the concentration and molecular composition of DOM we found a pool of compounds which show similar dynamics in all treatments over phytoplankton blooms.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    (Table 1) Normalized peak intensities from solid phase extracted dissolved organic matter from porewater and overlying bottom water collected during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait (2019)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-07-19
    Description: Dissolved organic matter molecular analyses were performed on a Solarix FT-ICR-MS equipped with a 15 Tesla superconducting magnet (Bruker Daltonic) using a an electrospray ionization source (Bruker Apollo II) in negative ion mode. Molecular formula calculation for all samples was performed using an Matlab (2010) routine that searches, with an error of 〈 0.5 ppm, for all potential combinations of elements including including the elements C∞, O∞, H∞, N = 4; S = 2 and P = 1. Combination of elements NSP, N2S, N3S, N4S, N2P, N3P, N4P, NS2, N2S2, N3S2, N4S2, S2P was not allowed. Mass peak intensities are normalized relative to the total molecular formulas in each sample according to previously published rules (Rossel et al., 2015; doi:10.1016/j.marchem.2015.07.002). The final data contained 7400 molecular formulae.
    Keywords: ABYSS; Arctic Ocean; Assessment of bacterial life and matter cycling in deep-sea surface sediments; deep sea sediment; Dissolved Organic Matter; Fourier-transform ion cyclotron mass spectrometry; Fram Strait; porewater
    Type: Dataset
    Format: text/plain, 2.9 MBytes
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    (Table S2) Contribution of formulas and elemental ratios of solid phase extracted dissolved organic matter from porewater and overlying bottom water collected during Maria S. Merian cruise MSM29 and Polarstern cruise PS85 to the Fram Strait (2019)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-02-02
    Description: Contribution of different molecular categories, H/Cwa and O/Cwa elemental ratios, aromaticity index (Aimodwa) and double bond equivalents (DBEwa) and indices of degradation (Ideg) and lability (MLBwl; Ibioprod). The contribution of each molecular category is expressed as a percentage of the total formulas in each sample obtained after normalization. Molecular formulas were additionally associated with different molecular categories because less than 6% of the DOM has been identified on a molecular level. Molecular categories are defined as follow: 1) condensed aromatics, with an AImod ≥ 0.67 (Koch and Dittmar, 2006, doi:10.1002/rcm.2386) was separated in 3 different subgroups, either 〈15 (condensed aromatics 〈15C), or ≥15 (condensed aromatics ≥15C) C atoms both without heteroatoms, or containing heteroelements (condensed aromatics-CHOx); 2) polyphenols, with an AImod 〉0.5 but 〈0.67; 3) highly unsaturated formulas, with an AImod 〈0.5, H/C 〈1.5; 4) formulas of unsaturated aliphatics, with an 1.5〈 H/C 〈2, O/C 〈0.9, N = 0; 5) saturated fatty acids, with an H/C 〉2, O/C 〈0.9 and with either no heteroatoms (sat. fatty acids) or with heteroatoms (sat. fatty acids-CHOx); 6) formulas of sugars, with an O/C 〉0.9 and with either no (sugars) or with heteroatoms (sugars-CHOx) and 7)unsaturated with N (unsaturated-N) molecular formulas, with 1.5 〈 H/C 〈2, O/C 〈 0.9 and N 〉0. Additionally, polyphenols, highly unsaturated and unsaturated aliphatics were further separated in oxygen rich (-O-rich) and oxygen poor (-O-poor) if the element ratio O/C was 〉 0.5 or 〈 0.5 respectively.
    Keywords: ABYSS; Arctic Ocean; ARK-XXVIII/2; Aromaticity index; Assessment of bacterial life and matter cycling in deep-sea surface sediments; Biological production index; Carboxyl-rich alicyclic formulas; Date/Time of event; deep sea sediment; Degradation index; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dissolved Organic Matter; Double bond equivalent; EGI; Elevation of event; Event label; Fourier-transform ion cyclotron mass spectrometry; Fram Strait; HAUSGARTEN 2013; HG_I; HG_II; HGI; HGIV; HGIX; HGVI; KH; Latitude of event; Light frame on-sight keyspecies investigation; LOKI; Longitude of event; Maria S. Merian; Mass spectrometer Solarix FT-ICR; Molecular lability boundary; MSM29; MSM29_424-3; MSM29_425-3; MSM29_427-2; MSM29_432-2; MSM29_439-3; MSM29_443-2; MSM29_450-2; MUC; MultiCorer; Multicorer with television; N_4; North Greenland Sea; Percentage of total formulae; Polarstern; porewater; PS85; PS85/436-1; PS85/441-1; PS85/445-1; PS85/454-3; PS85/454-4; PS85/454-5; PS85/460-4; PS85/463-1; PS85/464-1; PS85/465-4; PS85/468-1; PS85/469-2; PS85/470-3; PS85/473-3; Ratio; S_1; S_2; S_3; Sample ID; Station label; TVMUC
    Type: Dataset
    Format: text/tab-separated-values, 1804 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...