Dörner, Isabel; Hauss, Helena; Aberle, Nicole; Lohbeck, Kai T; Spisla, Carsten; Riebesell, Ulf; Ismar, Stefanie M (2020): Seawater carbonate chemistry and biomass and fatty acid composition of a post-bloom marine plankton community [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929270
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Abstract:
A mesocosm approach was used to investigate the effects of ocean acidification (OA) on a natural plankton community in coastal waters off Norway by manipulating CO2 partial pressure ( pCO2). Eight enclosures were deployed in the Raunefjord near Bergen. Treatment levels were ambient (320 µatm) and elevated pCO2 (~2000 µatm), each in 4 replicate enclosures. The experiment lasted for 53 d in May-June 2015. To assess impacts of OA on the plankton community, phytoplankton and protozooplankton biomass and total seston fatty acid content were analyzed. In both treatments, the plankton community was dominated by the dinoflagellate Ceratium longipes. In the elevated pCO2 treatment, however, biomass of this species as well as that of other dinoflagellates was strongly negatively affected. At the end of the experiment, total dinoflagellate biomass was 4-fold higher in the control group than under elevated pCO2 conditions. In a size comparison of C. longipes, cell size in the high pCO2 treatment was significantly larger. The ratio of polyunsaturated fatty acids to saturated fatty acids of seston decreased at high pCO2. In particular, the concentration of docosahexaenoic acid (C 22:6n3c), essential for development and reproduction of metazoans, was less than half at high pCO2 compared to ambient pCO2. Thus, elevated pCO2 led to a deterioration in the quality and quantity of food in a natural plankton community, with potential consequences for the transfer of matter and energy to higher trophic levels.
Keyword(s):
Supplement to:
Dörner, Isabel; Hauss, Helena; Aberle, Nicole; Lohbeck, Kai T; Spisla, Carsten; Riebesell, Ulf; Ismar, Stefanie M (2020): Ocean acidification impacts on biomass and fatty acid composition of a post-bloom marine plankton community. Marine Ecology Progress Series, p49-64, https://doi.org/10.3354/meps13390
Source:
Spisla, Carsten; Bach, Lennart Thomas; Taucher, Jan; Boxhammer, Tim; Yong, Jaw-Chuen (2020): KOSMOS Bergen 2015 mesocosm study: Environmental data, carbonate chemistry and nutrients. PANGAEA, https://doi.org/10.1594/PANGAEA.911638
Original version:
Hauss, Helena; Ismar, Stefanie M; Dörner, Isabel; Abele, Doris; Lohbeck, Kai T; Riebesell, Ulf (2018): Phytoplankton, Microzooplankton and Fatty Acid Composition in the KOSMOS Experiment Bergen 2015. PANGAEA, https://doi.org/10.1594/PANGAEA.896337
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Coverage:
Latitude: 60.265000 * Longitude: 5.205830
Date/Time Start: 2015-05-09T00:00:00 * Date/Time End: 2015-06-30T00:00:00
Event(s):
KOSMOS_2015_Mesocosm-M1 * Latitude: 60.265000 * Longitude: 5.205830 * Date/Time Start: 2015-05-03T00:00:00 * Date/Time End: 2015-06-30T00:00:00 * Campaign: KOSMOS_2015 (KOSMOS Bergen) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2015_Mesocosm-M2 * Latitude: 60.265000 * Longitude: 5.205830 * Date/Time Start: 2015-05-03T00:00:00 * Date/Time End: 2015-06-30T00:00:00 * Campaign: KOSMOS_2015 (KOSMOS Bergen) * Method/Device: Mesocosm experiment (MESO)
KOSMOS_2015_Mesocosm-M3 * Latitude: 60.265000 * Longitude: 5.205830 * Date/Time Start: 2015-05-03T00:00:00 * Date/Time End: 2015-06-30T00:00:00 * Campaign: KOSMOS_2015 (KOSMOS Bergen) * Method/Device: Mesocosm experiment (MESO)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2021-03-15.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5976 data points
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