Photosynthesis versus irradiance curve parameters of Laminaria hyperborea off the island of Helgoland in summer 2014


Laminaria hyperborea off the island of Helgoland (North Sea, Germany) was sampled along a depth gradient (0.5, 2, 4, 6 m) throughout summer 2014. Discs were cut from three different blade regions (5, 25 and 50 cm above the stipe-blade transition zone) and set into photosynthesis versus irradiance (PI) curves. PI curves were fitted by minimizing the sum of differences between the measured oxygen flux and the model proposed by Jassby and Platt (1976). Parameters were normalized to fresh mass and area.

Additional funding was provided by the Postdoctoral fellowship grant of the Fonds de recherche du Québec - Nature et technologies and the Weston Foundation.

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Creator Franke, Kiara ORCID logo; Matthes, Lisa C ORCID logo; Graiff, Angelika ORCID logo; Karsten, Ulf ORCID logo; Bartsch, Inka ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Deutsche Forschungsgemeinschaft, Bonn Crossref Funder ID 407670545 Seasonal kelp primary production at a rocky shore site: Integrating physiology and biochemistry into ecological modelling
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 576 data points
Discipline Earth System Research
Spatial Coverage (7.859W, 54.191S, 7.877E, 54.197N); off Helgoland, North Sea
Temporal Coverage Begin 2014-07-24T00:00:00Z
Temporal Coverage End 2014-09-06T00:00:00Z