Phytoplankton, Microzooplankton and Fatty Acid Composition in the KOSMOS Experiment Bergen 2015

Quantifying effects of Ocean Acidification (OA) on marine primary and secondary producers is of acute interest, as they could translate up to higher trophic levels and ultimately may alter ecosystem services including fishery yields. A mesocosm approach was used to investigate the effects of 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 and elevated pCO2 of ~ 2000 µatm each in four replicate enclosures. The experiment lasted for 53 days in early summer of 2015. To assess impacts of OA on the plankton community, we measured phytoplankton and protozooplankton biomass and total seston fatty acid (FA) content. In both the control and the elevated pCO2 treatment, the plankton community was dominated by the dinoflagellate Ceratium longipes. In the elevated pCO2 treatment, however, this species as well as other dinoflagellates were strongly negatively impacted: At the end of the experiment, total dinoflagellate biomass was fourfold higher in the control group than under elevated pCO2 treatment. In a size comparison of C. longipes, individuals in the high pCO2 treatment were significantly larger. Fatty acid analysis revealed a decreased ratio of polyunsaturated fatty acids (PUFA) to saturated fatty acids (SFA) at elevated pCO2. Further, docosahexaenoic acid (DHA, C 22:6n3c), essential for development and reproduction of copepods and higher trophic levels, was lower in the high pCO2 treatment. Both in quality and quantity of their food, higher trophic levels thus experienced worse conditions in a community exposed to elevated pCO2, with potentially severe consequences for higher trophic levels.

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Cite this as

Hauss, Helena, Ismar, Stefanie M, Dörner, Isabel, Abele, Doris, Lohbeck, Kai T, Riebesell, Ulf (2018). Dataset: Phytoplankton, Microzooplankton and Fatty Acid Composition in the KOSMOS Experiment Bergen 2015. https://doi.org/10.1594/PANGAEA.896337

DOI retrieved: 2018

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.896337
Author Hauss, Helena
Given Name Helena
Family Name Hauss
More Authors
Ismar, Stefanie M
Dörner, Isabel
Abele, Doris
Lohbeck, Kai T
Riebesell, Ulf
Source Creation 2018
Publication Year 2018
Resource Type application/zip - filename: Hauss-etal_2018
Subject Areas
Name: Biosphere

Name: Ecology

Name: Oceans

Related Identifiers
Title: Ocean acidification impacts on biomass and fatty acid composition of a post-bloom marine plankton community
Identifier: https://doi.org/10.3354/meps13390
Type: DOI
Relation: IsSupplementTo
Year: 2020
Source: Marine Ecology Progress Series
Authors: Dörner Isabel , Hauss Helena , Aberle Nicole , Lohbeck Kai T , Spisla Carsten , Riebesell Ulf , Ismar Stefanie M .

Title: Phytoplankton and microzooplankton abundance in the KOSMOS Experiment Bergen 2015
Identifier: https://doi.org/10.1594/PANGAEA.919634
Type: DOI
Relation: References
Year: 2020
Authors: Hauss Helena , Ismar Stefanie M , Dörner Isabel , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole .

Title: Biovolume of Ceratium longipes and Ceratium fusus in the KOSMOS Experiment Bergen 2015
Identifier: https://doi.org/10.1594/PANGAEA.919647
Type: DOI
Relation: References
Year: 2020
Authors: Hauss Helena , Ismar Stefanie M , Dörner Isabel , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole .

Title: Phytoplankton and microzooplankton biomass in the KOSMOS Experiment Bergen 2015
Identifier: https://doi.org/10.1594/PANGAEA.919632
Type: DOI
Relation: References
Year: 2020
Authors: Hauss Helena , Ismar Stefanie M , Dörner Isabel , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole , Hauss Helena , Ismar Stefanie M , Dörner Isabel , Aberle Nicole .