Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido
The amount of prior light exposure an algal community receives is likely to determine its ability to recover from exposure to high light levels. Here we investigate the effect of time of day and light on the ability of ice algae to recover from variable light exposure. The ice algae were obtained fr...
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ftunivtasmania:oai:eprints.utas.edu.au:12249 2023-05-15T16:36:33+02:00 Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido McMinn, A Hattori, H 2006 application/pdf https://eprints.utas.edu.au/12249/ https://eprints.utas.edu.au/12249/1/McMinn_%26_Hattori.pdf http://polaris.nipr.ac.jp/~penguin/polarbiosci/ en eng https://eprints.utas.edu.au/12249/1/McMinn_%26_Hattori.pdf McMinn, A and Hattori, H 2006 , 'Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido' , Polar Bioscience, vol. 20 , pp. 30-36 . cc_utas sea ice Hokkaido recovery photoinhibition Article PeerReviewed 2006 ftunivtasmania 2020-05-30T07:26:00Z The amount of prior light exposure an algal community receives is likely to determine its ability to recover from exposure to high light levels. Here we investigate the effect of time of day and light on the ability of ice algae to recover from variable light exposure. The ice algae were obtained from Saroma Ko lagoon, a temperate, perennially ice covered lagoon in northern Hokkaido, Japan. Under ice irradiance varied between 0 and 122 μmol photons m−2s−1. Algal biomass, which was dominated by Nitzschia frigida, was 272.8±20.2 mg Chl a m−2. There was no consistent relationship between ambient in situ irradiance and recovery rates. While the sea ice community showed mild inhibition at the highest irradiance used, 490 μmol photons m−2s−1, after 10 min the quantum yield had recovered to between 90.9% and 112% (average 99.5%) of the original measurement. It is likely that ambient under ice irradiances at Saroma Ko lagoon were never sufficient to cause photoinhibition and consequently had little negative long term effect on photophysiology. The Rapid Light Curves, while providing irradiances of sufficient intensity to cause inhibition, were of too short a duration to cause anything but a short, transient effect. Therefore, it is unclear whether higher in situ irradiances would necessitate a longer period of recovery. Article in Journal/Newspaper ice algae Polar bioscience Sea ice University of Tasmania: UTas ePrints |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
sea ice Hokkaido recovery photoinhibition |
spellingShingle |
sea ice Hokkaido recovery photoinhibition McMinn, A Hattori, H Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
topic_facet |
sea ice Hokkaido recovery photoinhibition |
description |
The amount of prior light exposure an algal community receives is likely to determine its ability to recover from exposure to high light levels. Here we investigate the effect of time of day and light on the ability of ice algae to recover from variable light exposure. The ice algae were obtained from Saroma Ko lagoon, a temperate, perennially ice covered lagoon in northern Hokkaido, Japan. Under ice irradiance varied between 0 and 122 μmol photons m−2s−1. Algal biomass, which was dominated by Nitzschia frigida, was 272.8±20.2 mg Chl a m−2. There was no consistent relationship between ambient in situ irradiance and recovery rates. While the sea ice community showed mild inhibition at the highest irradiance used, 490 μmol photons m−2s−1, after 10 min the quantum yield had recovered to between 90.9% and 112% (average 99.5%) of the original measurement. It is likely that ambient under ice irradiances at Saroma Ko lagoon were never sufficient to cause photoinhibition and consequently had little negative long term effect on photophysiology. The Rapid Light Curves, while providing irradiances of sufficient intensity to cause inhibition, were of too short a duration to cause anything but a short, transient effect. Therefore, it is unclear whether higher in situ irradiances would necessitate a longer period of recovery. |
format |
Article in Journal/Newspaper |
author |
McMinn, A Hattori, H |
author_facet |
McMinn, A Hattori, H |
author_sort |
McMinn, A |
title |
Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
title_short |
Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
title_full |
Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
title_fullStr |
Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
title_full_unstemmed |
Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido |
title_sort |
effect of time of day on the recovery from light exposure in ice algae from saroma ko lagoon, hokkaido |
publishDate |
2006 |
url |
https://eprints.utas.edu.au/12249/ https://eprints.utas.edu.au/12249/1/McMinn_%26_Hattori.pdf http://polaris.nipr.ac.jp/~penguin/polarbiosci/ |
genre |
ice algae Polar bioscience Sea ice |
genre_facet |
ice algae Polar bioscience Sea ice |
op_relation |
https://eprints.utas.edu.au/12249/1/McMinn_%26_Hattori.pdf McMinn, A and Hattori, H 2006 , 'Effect of time of day on the recovery from light exposure in ice algae from Saroma Ko lagoon, Hokkaido' , Polar Bioscience, vol. 20 , pp. 30-36 . |
op_rights |
cc_utas |
_version_ |
1766026886220087296 |