Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat
The photosynthetic performance of a Vaucheria sp. community in the Adventfjorden tidal flats near Longyearbyen, Svalbard, the Arctic was evaluated in a series of in situ and ex situ measurements based on variable chlorophyll fluorescence and gasometric approaches. The in situ measurement did not ind...
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ftnipr:oai:nipr.repo.nii.ac.jp:00015931 2023-05-15T13:05:53+02:00 Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat 2019-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15931 http://id.nii.ac.jp/1291/00015824/ en eng https://doi.org/10.1016/j.polar.2018.11.006 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15931 http://id.nii.ac.jp/1291/00015824/ Polar Science, 21, 172-185(2019-09) 18739652 Arctic Photosynthesis Tidal zone Vaucheria sp Journal Article 2019 ftnipr https://doi.org/10.1016/j.polar.2018.11.006 2022-12-03T19:43:16Z The photosynthetic performance of a Vaucheria sp. community in the Adventfjorden tidal flats near Longyearbyen, Svalbard, the Arctic was evaluated in a series of in situ and ex situ measurements based on variable chlorophyll fluorescence and gasometric approaches. The in situ measurement did not indicate any possible drivers from the selected environmental parameters (temperature, PAR, UVR, emersion period duration) of photosynthetic activity. Two ecotypes, spikes or loose filaments, observed in the field were related to emersion and immersion periods during the tidal cycle. Ex situ long-term monitoring identified PAR as the main controlling factor of photosynthesis. No limitation of photosynthetic activity due to temperatures or light was detected. The detailed ex situ photosynthesis measurements of Vaucheria sp. samples pre-acclimated to different irradiances did not reveal any decrease of photosynthesis in high light. Irradiance affected only the photosynthesis rate, but not the photosynthesis efficiency. The Vaucheria sp. was acclimated to the prevailing low-light conditions but was able to tolerate high-light conditions on sunny days of the late Artic summer. Article in Journal/Newspaper Adventfjorden Arctic Longyearbyen Polar Science Polar Science Svalbard National Institute of Polar Research Repository, Japan Arctic Svalbard Longyearbyen Adventfjorden ENVELOPE(15.515,15.515,78.258,78.258) Polar Science 21 172 185 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Arctic Photosynthesis Tidal zone Vaucheria sp |
spellingShingle |
Arctic Photosynthesis Tidal zone Vaucheria sp Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
topic_facet |
Arctic Photosynthesis Tidal zone Vaucheria sp |
description |
The photosynthetic performance of a Vaucheria sp. community in the Adventfjorden tidal flats near Longyearbyen, Svalbard, the Arctic was evaluated in a series of in situ and ex situ measurements based on variable chlorophyll fluorescence and gasometric approaches. The in situ measurement did not indicate any possible drivers from the selected environmental parameters (temperature, PAR, UVR, emersion period duration) of photosynthetic activity. Two ecotypes, spikes or loose filaments, observed in the field were related to emersion and immersion periods during the tidal cycle. Ex situ long-term monitoring identified PAR as the main controlling factor of photosynthesis. No limitation of photosynthetic activity due to temperatures or light was detected. The detailed ex situ photosynthesis measurements of Vaucheria sp. samples pre-acclimated to different irradiances did not reveal any decrease of photosynthesis in high light. Irradiance affected only the photosynthesis rate, but not the photosynthesis efficiency. The Vaucheria sp. was acclimated to the prevailing low-light conditions but was able to tolerate high-light conditions on sunny days of the late Artic summer. |
format |
Article in Journal/Newspaper |
title |
Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
title_short |
Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
title_full |
Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
title_fullStr |
Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
title_full_unstemmed |
Ecophysiology of photosynthesis of Vaucheria sp. mats in a Svalbard tidal flat |
title_sort |
ecophysiology of photosynthesis of vaucheria sp. mats in a svalbard tidal flat |
publishDate |
2019 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15931 http://id.nii.ac.jp/1291/00015824/ |
long_lat |
ENVELOPE(15.515,15.515,78.258,78.258) |
geographic |
Arctic Svalbard Longyearbyen Adventfjorden |
geographic_facet |
Arctic Svalbard Longyearbyen Adventfjorden |
genre |
Adventfjorden Arctic Longyearbyen Polar Science Polar Science Svalbard |
genre_facet |
Adventfjorden Arctic Longyearbyen Polar Science Polar Science Svalbard |
op_relation |
https://doi.org/10.1016/j.polar.2018.11.006 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=15931 http://id.nii.ac.jp/1291/00015824/ Polar Science, 21, 172-185(2019-09) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2018.11.006 |
container_title |
Polar Science |
container_volume |
21 |
container_start_page |
172 |
op_container_end_page |
185 |
_version_ |
1766396461078020096 |