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...

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Bibliographic Details
Main Authors: Marambio, Johanna, Rosenfeld, Sebastian, Bischof, Kai
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
Arctic
Climate change
Ny-Ålesund
Palmaria palmata
Photosynthetic parameters
pigments
Salinity
seaweed
Species, unique identification
Species, unique identification Semantic URI
Species, unique identification URI
Family
Replication
Duration, number of days
Treatment light intensity
Treatment salinity
Chlorophyll a
Lutein
beta-Carotene
Zeaxanthin
Photochemical quantum yield
Non photochemical quenching, light curve 0
Non photochemical quenching, light curve 100
Non photochemical quenching, light curve 200
Non photochemical quenching, light curve 300
Non photochemical quenching, light curve 400
Non photochemical quenching, light curve 500
Non photochemical quenching, light curve 600
Antioxidant activity 2,2-diphenyl-1-picrylhydrazyl
Biological sample
Pulse amplitude modulation PAM fluorometry
Arctic Biodiversity & Livelihoods FACE-IT
Arctic biodiversity
Kongsfjord*
Kongsfjorden
Ny Ålesund
Svalbard
Online Access:https://dx.doi.org/10.1594/pangaea.956547
https://doi.pangaea.de/10.1594/PANGAEA.956547
Description
Summary: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). ...

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