Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord ...

The Arctic region has been affected by high temperatures, directly affecting the macroalgae living there. One of the macroalgae that inhabit this area is the species Desmarestia aculeata (Phaeophyceae), widely distributed in the North Atlantic. It is exposed to the high Arctic light regime and fluct...

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Bibliographic Details
Main Authors: Marambio, Johanna, Diehl, Nora, Bischof, Kai
Format: Dataset
Language:unknown
Published: PANGAEA 2024
Subjects:
arctic fjord
Desmarestia aculeata
ecophysiology
Phaeophyceae
Type of study
Family
Species, unique identification
Species, unique identification Semantic URI
Species, unique identification URI
Treatment: light condition
Treatment: salinity
Time in days
Replicates
Chlorophyll a
Chlorophyll c2
beta-Carotene
Fucoxanthin
Photochemical quantum yield
Maximal electron transport rate, relative
Saturation light intensity
Maximum light use efficiency
Carbon
Nitrogen
Carbon/Nitrogen ratio
Biological sample
High Performance Liquid Chromatography HPLC
Chlorophyll Fluorescence System I-PAM, Walz, Imaging-PAM fluorometer
Elemental analyzer
Arctic Biodiversity & Livelihoods FACE-IT
Arctic
Svalbard
Arctic biodiversity
Climate change
Kongsfjord*
Kongsfjorden
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.969561
https://doi.pangaea.de/10.1594/PANGAEA.969561
Description
Summary:The Arctic region has been affected by high temperatures, directly affecting the macroalgae living there. One of the macroalgae that inhabit this area is the species Desmarestia aculeata (Phaeophyceae), widely distributed in the North Atlantic. It is exposed to the high Arctic light regime and fluctuating salinity conditions from glacial and terrestrial run-off. Despite its abundance, little is known about D. aculeata and how environmental drivers will affect it in a future altered by climate change. D. aculeata was collected during the summer of 2019, in Kongsfjorden, Svalbard (78.9°N, 11.9°E) to investigate its physiological and biochemical responses to salinities of 34, 28, and 18, and daily cycles of irradiance (50-500 µmol photons/m**2/s) at 0ºC over 21 days. Photosynthetic parameters and high pigment concentrations show how this species has an effective acclimation. These manuscript shows the high plasticity of the specie D. aculeata, such that the species will probably be able to tolerate future ...

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