Hyposalinity affects diurnal photoacclimation patterns in the rhodophyte Palmaria palmata under mimicked Arctic summer conditions: raw data from laboratory physiological measurements


The Arctic is one area that has been affected by rising temperatures, leading to an increase in meltwater in the water column. During the months of June/July 2019, fronds of the red seaweed Palmaria palmata in Kongsfjorden, Svalbard (78°55'56.0N 11°55'59.6E) were colected in the intertidal zone. For 21 days at 0ºC, P. palmata was subjected to variations of irradiance cycles and three different salinities SA 34 (control), 28 and 18 in laboratory conditions. Subsequently, measurements in triplicate (n=3) were made of photosynthetic parameters such as maximal quantum yield of PSII (Fv/Fm), non-photochemical quenching (NPQ), biochemical parameters such as quantification of pigments chlorophyll a (Chl a), lutein (Lut), zeaxanthin (Zeax), β-carotene (β-Car), and antioxidant activity 2,2-diphenyl-1-picrylhydrazyl (DPPH).

DOI https://doi.org/10.1594/PANGAEA.956547
Related Identifier https://doi.org/10.1016/j.jpap.2022.100124
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.956547
Creator Marambio, Johanna ORCID logo; Rosenfeld, Sebastian; Bischof, Kai ORCID logo
Publisher PANGAEA
Publication Year 2023
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1476 data points
Discipline Earth System Research
Spatial Coverage (11.669 LON, 79.005 LAT); Kongsfjorden, Spitsbergen, Arctic