High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions
The seaweed Desmarestia aculeata (Phaeophyceae) is distributed in the temperate zone of the North Atlantic up to the Arctic, where it is exposed to a high Arctic light regime and fluctuating salinity conditions resulting from glacial and terrestrial run-off. Information on how this species is able t...
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ftzenodo:oai:zenodo.org:7199045 2023-05-15T14:36:03+02:00 High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions Marambio, Johanna Diehl, Nora Bischof, Kai 2022-10-13 https://zenodo.org/record/7199045 https://doi.org/10.3390/biology11101499 eng eng info:eu-repo/grantAgreement/EC/Horizon 2020 Framework Programme - Research and Innovation action/869154/ https://zenodo.org/communities/face-it https://zenodo.org/record/7199045 https://doi.org/10.3390/biology11101499 oai:zenodo.org:7199045 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Arctic mannitol acclimation Fv/Fm pigments info:eu-repo/semantics/article publication-article 2022 ftzenodo https://doi.org/10.3390/biology11101499 2023-03-11T02:46:55Z The seaweed Desmarestia aculeata (Phaeophyceae) is distributed in the temperate zone of the North Atlantic up to the Arctic, where it is exposed to a high Arctic light regime and fluctuating salinity conditions resulting from glacial and terrestrial run-off. Information on how this species is able to thrive under current and future Arctic conditions is scarce. During the Arctic summer of 2019, D. aculeata was collected in Kongsfjorden, Svalbard (78.9° N, 11.9° E) to investigate its physiological and biochemical responses to variations in salinity (salinities: 34, 28 and 18) and daily cycles of irradiance (50–500 μmol photons m−2s−1) at 0 °C over 21 days. The species revealed effective short-term acclimation to both abiotic drivers. Maximal quantum yield of PSII (Fv/Fm) fluctuated with the light cycle at a salinity of 34, while the maximum relative electron transport rate (rETRmax) significantly differed between salinities of 28 and 18. Chlorophyll a and β-Carotene remained at high concentrations in all treatments showing pronounced acclimation during the experiment. High mannitol concentrations were measured throughout the experiment, while phlorotannins were high at low salinity. Hyposalinity and light are interacting drivers of the physiological and biochemical acclimation process for D. aculeata. Our experiment highlights the high ecophysiological plasticity of D. aculeata, suggesting that the species will likely be capable of withstanding future habitat changes in the Arctic. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden North Atlantic Svalbard Zenodo Arctic Svalbard Biology 11 10 1499 |
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op_collection_id |
ftzenodo |
language |
English |
topic |
Arctic mannitol acclimation Fv/Fm pigments |
spellingShingle |
Arctic mannitol acclimation Fv/Fm pigments Marambio, Johanna Diehl, Nora Bischof, Kai High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
topic_facet |
Arctic mannitol acclimation Fv/Fm pigments |
description |
The seaweed Desmarestia aculeata (Phaeophyceae) is distributed in the temperate zone of the North Atlantic up to the Arctic, where it is exposed to a high Arctic light regime and fluctuating salinity conditions resulting from glacial and terrestrial run-off. Information on how this species is able to thrive under current and future Arctic conditions is scarce. During the Arctic summer of 2019, D. aculeata was collected in Kongsfjorden, Svalbard (78.9° N, 11.9° E) to investigate its physiological and biochemical responses to variations in salinity (salinities: 34, 28 and 18) and daily cycles of irradiance (50–500 μmol photons m−2s−1) at 0 °C over 21 days. The species revealed effective short-term acclimation to both abiotic drivers. Maximal quantum yield of PSII (Fv/Fm) fluctuated with the light cycle at a salinity of 34, while the maximum relative electron transport rate (rETRmax) significantly differed between salinities of 28 and 18. Chlorophyll a and β-Carotene remained at high concentrations in all treatments showing pronounced acclimation during the experiment. High mannitol concentrations were measured throughout the experiment, while phlorotannins were high at low salinity. Hyposalinity and light are interacting drivers of the physiological and biochemical acclimation process for D. aculeata. Our experiment highlights the high ecophysiological plasticity of D. aculeata, suggesting that the species will likely be capable of withstanding future habitat changes in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Marambio, Johanna Diehl, Nora Bischof, Kai |
author_facet |
Marambio, Johanna Diehl, Nora Bischof, Kai |
author_sort |
Marambio, Johanna |
title |
High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
title_short |
High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
title_full |
High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
title_fullStr |
High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
title_full_unstemmed |
High Ecophysiological Plasticity of Desmarestia aculeata (Phaeophyceae) Present in an Arctic Fjord under Varying Salinity and Irradiance Conditions |
title_sort |
high ecophysiological plasticity of desmarestia aculeata (phaeophyceae) present in an arctic fjord under varying salinity and irradiance conditions |
publishDate |
2022 |
url |
https://zenodo.org/record/7199045 https://doi.org/10.3390/biology11101499 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Kongsfjord* Kongsfjorden North Atlantic Svalbard |
genre_facet |
Arctic Kongsfjord* Kongsfjorden North Atlantic Svalbard |
op_relation |
info:eu-repo/grantAgreement/EC/Horizon 2020 Framework Programme - Research and Innovation action/869154/ https://zenodo.org/communities/face-it https://zenodo.org/record/7199045 https://doi.org/10.3390/biology11101499 oai:zenodo.org:7199045 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3390/biology11101499 |
container_title |
Biology |
container_volume |
11 |
container_issue |
10 |
container_start_page |
1499 |
_version_ |
1766308750566621184 |