Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances
A light perturbation experiment on sea ice at Cape Evans in 1996 found significant differences in biomass accumulation between ice algal assemblages exposed to additional UVB, UVA and PAR irradiances and those exposed to either control or elevated PAR and UVA without UVB. Sea ice with its snow cover...
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Language: | English |
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Walter de Gruyter & Co
1999
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Online Access: | https://doi.org/10.1515/BOT.1999.046 http://ecite.utas.edu.au/16765 |
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ftunivtasecite:oai:ecite.utas.edu.au:16765 2023-05-15T13:59:07+02:00 Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances McMinn, A Ashworth, CM Ryan, K 1999 https://doi.org/10.1515/BOT.1999.046 http://ecite.utas.edu.au/16765 en eng Walter de Gruyter & Co http://dx.doi.org/10.1515/BOT.1999.046 McMinn, A and Ashworth, CM and Ryan, K, Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances, Botanica Marina, 42, (4) pp. 401-407. ISSN 0006-8055 (1999) [Refereed Article] http://ecite.utas.edu.au/16765 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 1999 ftunivtasecite https://doi.org/10.1515/BOT.1999.046 2019-12-13T21:00:12Z A light perturbation experiment on sea ice at Cape Evans in 1996 found significant differences in biomass accumulation between ice algal assemblages exposed to additional UVB, UVA and PAR irradiances and those exposed to either control or elevated PAR and UVA without UVB. Sea ice with its snow cover removed (and thus exposed to additional UVB, UVA and PAR) had a 40% lower rate of biomass accumulation than sea ice with its snow cover removed but covered with UVB-absorbing mylar. Chlorophyll-specific production under PAR was up to 0.05 mg C (mg Chl a)-1 h-1 although it was approximately 0.02 mg C (mg Chl a)-1 h-1 at ambient under ice irradiances of 2-6 mol photons m-2 s-1 PAR. UVB irradiation was found to have a greater impact on highly shade-adapted sea ice algal communities beneath thick ice with a thick snow cover than on thinner ice with less snow. Article in Journal/Newspaper Antarc* Antarctic ice algae Sea ice eCite UTAS (University of Tasmania) Antarctic Cape Evans ENVELOPE(161.550,161.550,-75.100,-75.100) Botanica Marina 42 4 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) McMinn, A Ashworth, CM Ryan, K Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
A light perturbation experiment on sea ice at Cape Evans in 1996 found significant differences in biomass accumulation between ice algal assemblages exposed to additional UVB, UVA and PAR irradiances and those exposed to either control or elevated PAR and UVA without UVB. Sea ice with its snow cover removed (and thus exposed to additional UVB, UVA and PAR) had a 40% lower rate of biomass accumulation than sea ice with its snow cover removed but covered with UVB-absorbing mylar. Chlorophyll-specific production under PAR was up to 0.05 mg C (mg Chl a)-1 h-1 although it was approximately 0.02 mg C (mg Chl a)-1 h-1 at ambient under ice irradiances of 2-6 mol photons m-2 s-1 PAR. UVB irradiation was found to have a greater impact on highly shade-adapted sea ice algal communities beneath thick ice with a thick snow cover than on thinner ice with less snow. |
format |
Article in Journal/Newspaper |
author |
McMinn, A Ashworth, CM Ryan, K |
author_facet |
McMinn, A Ashworth, CM Ryan, K |
author_sort |
McMinn, A |
title |
Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
title_short |
Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
title_full |
Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
title_fullStr |
Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
title_full_unstemmed |
Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances |
title_sort |
growth and productivity of antarctic sea ice algae under par and uv irradiances |
publisher |
Walter de Gruyter & Co |
publishDate |
1999 |
url |
https://doi.org/10.1515/BOT.1999.046 http://ecite.utas.edu.au/16765 |
long_lat |
ENVELOPE(161.550,161.550,-75.100,-75.100) |
geographic |
Antarctic Cape Evans |
geographic_facet |
Antarctic Cape Evans |
genre |
Antarc* Antarctic ice algae Sea ice |
genre_facet |
Antarc* Antarctic ice algae Sea ice |
op_relation |
http://dx.doi.org/10.1515/BOT.1999.046 McMinn, A and Ashworth, CM and Ryan, K, Growth and Productivity of Antarctic Sea Ice Algae under PAR and UV Irradiances, Botanica Marina, 42, (4) pp. 401-407. ISSN 0006-8055 (1999) [Refereed Article] http://ecite.utas.edu.au/16765 |
op_doi |
https://doi.org/10.1515/BOT.1999.046 |
container_title |
Botanica Marina |
container_volume |
42 |
container_issue |
4 |
_version_ |
1766267497863970816 |