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  • BIOACID; Biological Impacts of Ocean Acidification  (2)
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  • 1
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    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
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    DATA PANGAEA
  • 2
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    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
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