Observations on the snow algae of the South Orkney Islands
One of the most abundant algal species found in snow on the South Orkney Islands is a unicellular chrysophycean not hitherto reported from this region. Investigations both by direct counts and by in situ determinations of metabolic activity by a radiocarbon technique suggest that growth of snow alga...
Published in: | Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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The Royal Society
1967
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Online Access: | http://dx.doi.org/10.1098/rstb.1967.0018 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1967.0018 |
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crroyalsociety:10.1098/rstb.1967.0018 2024-06-02T08:14:31+00:00 Observations on the snow algae of the South Orkney Islands 1967 http://dx.doi.org/10.1098/rstb.1967.0018 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1967.0018 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences volume 252, issue 777, page 279-287 ISSN 2054-0280 journal-article 1967 crroyalsociety https://doi.org/10.1098/rstb.1967.0018 2024-05-07T14:16:24Z One of the most abundant algal species found in snow on the South Orkney Islands is a unicellular chrysophycean not hitherto reported from this region. Investigations both by direct counts and by in situ determinations of metabolic activity by a radiocarbon technique suggest that growth of snow algae is, in general, slow. Their primary productivity is estimated as being of the order of 10 mg carbon fixed m-2 snow surface day-1. The sudden appearance of patches of these algae seems to be due to mechanical accumulation at the surface, as ablation of the snow proceeds, of cells previously distributed sparsely through its thickness. There appear to be no great differences either in species composition or in metabolic activity between green, yellow and red snow. The greater population densities and absence of red resting spores characteristic of green snow are perhaps attributable to greater availability of liquid water. Article in Journal/Newspaper South Orkney Islands The Royal Society South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 252 777 279 287 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
One of the most abundant algal species found in snow on the South Orkney Islands is a unicellular chrysophycean not hitherto reported from this region. Investigations both by direct counts and by in situ determinations of metabolic activity by a radiocarbon technique suggest that growth of snow algae is, in general, slow. Their primary productivity is estimated as being of the order of 10 mg carbon fixed m-2 snow surface day-1. The sudden appearance of patches of these algae seems to be due to mechanical accumulation at the surface, as ablation of the snow proceeds, of cells previously distributed sparsely through its thickness. There appear to be no great differences either in species composition or in metabolic activity between green, yellow and red snow. The greater population densities and absence of red resting spores characteristic of green snow are perhaps attributable to greater availability of liquid water. |
format |
Article in Journal/Newspaper |
title |
Observations on the snow algae of the South Orkney Islands |
spellingShingle |
Observations on the snow algae of the South Orkney Islands |
title_short |
Observations on the snow algae of the South Orkney Islands |
title_full |
Observations on the snow algae of the South Orkney Islands |
title_fullStr |
Observations on the snow algae of the South Orkney Islands |
title_full_unstemmed |
Observations on the snow algae of the South Orkney Islands |
title_sort |
observations on the snow algae of the south orkney islands |
publisher |
The Royal Society |
publishDate |
1967 |
url |
http://dx.doi.org/10.1098/rstb.1967.0018 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1967.0018 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
South Orkney Islands |
geographic_facet |
South Orkney Islands |
genre |
South Orkney Islands |
genre_facet |
South Orkney Islands |
op_source |
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences volume 252, issue 777, page 279-287 ISSN 2054-0280 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1967.0018 |
container_title |
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences |
container_volume |
252 |
container_issue |
777 |
container_start_page |
279 |
op_container_end_page |
287 |
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1800738398227398656 |