Experiments on polar seaweeds ...
Organisms populating benthic shallow water systems of both polar regions are adapted to a particularly harsh environment. We studied effects of freezing and the combination of high light intensities and low water temperatures on photosynthesis of key macroalgal species from the Arctic intertidal (Fu...
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ftdatacite:10.1594/pangaea.744827 2024-09-15T17:44:32+00:00 Experiments on polar seaweeds ... Becker, Susanne Walter, Bettina Bischof, Kai 2009 application/zip https://dx.doi.org/10.1594/pangaea.744827 https://doi.pangaea.de/10.1594/PANGAEA.744827 en eng PANGAEA https://dx.doi.org/10.1515/bot.2009.079 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 dataset Supplementary Dataset Dataset 2009 ftdatacite https://doi.org/10.1594/pangaea.74482710.1515/bot.2009.079 2024-08-01T10:57:41Z Organisms populating benthic shallow water systems of both polar regions are adapted to a particularly harsh environment. We studied effects of freezing and the combination of high light intensities and low water temperatures on photosynthesis of key macroalgal species from the Arctic intertidal (Fucus distichus) and Antarctic subtidal (Palmaria decipiens). Photosynthetic activity of F. distichus specimens was monitored during the freezing process; there was a marked decrease in quantum yield with decreasing temperatures, and a rapid recovery as soon as temperatures increased again. Thus, under the experimental conditions tested, no indication of photodamage was found. Specimens of Palmaria were exposed to a combination of high light intensities and low water temperatures. A persistent impairment of photosynthetic activity occurred at 0°C at light intensities of 400 µmol photons m-2 s-1. In all treatments, there was a decreasing ratio of phycobiliproteins to chlorophyll a. Overall, the two studies provide ... : Data are archived in excel-files with german comments as submitted by the first author. No standardization of parameters and formats or quality control was done by the authors. ... Dataset Antarc* Antarctic Sea ice DataCite |
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Open Polar |
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ftdatacite |
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English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
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Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Becker, Susanne Walter, Bettina Bischof, Kai Experiments on polar seaweeds ... |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Organisms populating benthic shallow water systems of both polar regions are adapted to a particularly harsh environment. We studied effects of freezing and the combination of high light intensities and low water temperatures on photosynthesis of key macroalgal species from the Arctic intertidal (Fucus distichus) and Antarctic subtidal (Palmaria decipiens). Photosynthetic activity of F. distichus specimens was monitored during the freezing process; there was a marked decrease in quantum yield with decreasing temperatures, and a rapid recovery as soon as temperatures increased again. Thus, under the experimental conditions tested, no indication of photodamage was found. Specimens of Palmaria were exposed to a combination of high light intensities and low water temperatures. A persistent impairment of photosynthetic activity occurred at 0°C at light intensities of 400 µmol photons m-2 s-1. In all treatments, there was a decreasing ratio of phycobiliproteins to chlorophyll a. Overall, the two studies provide ... : Data are archived in excel-files with german comments as submitted by the first author. No standardization of parameters and formats or quality control was done by the authors. ... |
format |
Dataset |
author |
Becker, Susanne Walter, Bettina Bischof, Kai |
author_facet |
Becker, Susanne Walter, Bettina Bischof, Kai |
author_sort |
Becker, Susanne |
title |
Experiments on polar seaweeds ... |
title_short |
Experiments on polar seaweeds ... |
title_full |
Experiments on polar seaweeds ... |
title_fullStr |
Experiments on polar seaweeds ... |
title_full_unstemmed |
Experiments on polar seaweeds ... |
title_sort |
experiments on polar seaweeds ... |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://dx.doi.org/10.1594/pangaea.744827 https://doi.pangaea.de/10.1594/PANGAEA.744827 |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_relation |
https://dx.doi.org/10.1515/bot.2009.079 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.74482710.1515/bot.2009.079 |
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1810492162826043392 |