Variations of Fucus vesiculosus photophysiological performance in the Kiel Outdoor Benthocosms in four different seasons – relative electron transport rate and maximum quantum yield ...

Ocean warming and acidification may substantially affect the photophysiological performance of keystone species such as Fucus vesiculosus (Phaeophyceae) in shallow coastal waters. In four consecutive benthic mesocosm experiments (Kiel Outdoor Benthocosm, Kiel, Germany, 54°20'N; 10°09'E), w...

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Bibliographic Details
Main Authors: Graiff, Angelika, Bartsch, Inka, Glaser, Karin, Karsten, Ulf
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
chlorophyll fluorescence
mesocosm
Photosynthesis
Season
Time in days
DATE/TIME
Maximal electron transport rate, relative
Photochemical quantum yield
Biological Impacts of Ocean Acidification BIOACID
Ocean acidification
Online Access:https://dx.doi.org/10.1594/pangaea.933404
https://doi.pangaea.de/10.1594/PANGAEA.933404
Description
Summary:Ocean warming and acidification may substantially affect the photophysiological performance of keystone species such as Fucus vesiculosus (Phaeophyceae) in shallow coastal waters. In four consecutive benthic mesocosm experiments (Kiel Outdoor Benthocosm, Kiel, Germany, 54°20'N; 10°09'E), we compared the photophysiological performance (i.e., oxygen production, in vivo chlorophyll a fluorescence, energy dissipation pathways and chlorophyll concentration) of Baltic Sea Fucus under the single and combined impact of elevated seawater temperature (Δ + 5°C) and pCO2 (1100 ppm). Fucus specimens were sampled, in each season (spring: April 2, 2013; summer: July 2, 2013; autumn: 8 October; winter: January 14, 2014) from a depth of 0.2–1 m in the Kiel Fjord (Bülk), western Baltic Sea, Germany (54°27'N; 10°11,5'E). Photosynthetic performance was measured with two different methods, one based on in vivo chlorophyll a fluorescence measurements of photosystem II (PSII), the other one based on oxygen production. For each ...

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