Algae, lichens and fungi in La Gorce Mountains, Antarctica
Two species of lichens, six cyanobacteria, one diatom, 10 chlorophytes and two mycelial fungi were found at La Gorce Mountains (86°30′S, 147°W) at an altitude of about 1750 m. The lichens Lecidea cancriformis and Carbonea vorticosa occurred at a single site which is the most southerly record of lich...
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Cambridge University Press (CUP)
1998
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Online Access: | http://dx.doi.org/10.1017/s0954102098000467 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000467 |
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crcambridgeupr:10.1017/s0954102098000467 2024-09-15T17:45:38+00:00 Algae, lichens and fungi in La Gorce Mountains, Antarctica Broady, Paul A. Weinstein, Richard N. 1998 http://dx.doi.org/10.1017/s0954102098000467 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000467 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 10, issue 4, page 376-385 ISSN 0954-1020 1365-2079 journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0954102098000467 2024-08-07T04:04:06Z Two species of lichens, six cyanobacteria, one diatom, 10 chlorophytes and two mycelial fungi were found at La Gorce Mountains (86°30′S, 147°W) at an altitude of about 1750 m. The lichens Lecidea cancriformis and Carbonea vorticosa occurred at a single site which is the most southerly record of lichens. Thousands of small ponds covered extensive ice-cored moraine. Nine ponds sampled had about 30 cm of ice overlying about 26 cm of water and contained algal mats dominated by Phormidium autumnale and cf. Leptolyngbya fragilis. The very low conductivity waters had high nitrate and low dissolved reactive phosphorus concentrations. Of 124 soil samples, five contained visible algae. In 32 there were only microscopic growths but no algae were detected in 87 samples, possibly because of lack of water for much of summer. A visible mat dominated by Hammatoidea normanni occurred in a rock fissure at the lichen site. At Price Bluff, green patches of Desmococcus cf.olivaceus , up to 20 cm 2 , were scattered over the moraine. Growths were revealed at the soil–ice interface when overlying soil up to one centimetre thick was removed. It is suggested that although dispersal of algae from local populations may be readily achieved establishment of populations is a rare event outside the pond environment. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Cambridge University Press Antarctic Science 10 4 376 385 |
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Open Polar |
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Cambridge University Press |
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language |
English |
description |
Two species of lichens, six cyanobacteria, one diatom, 10 chlorophytes and two mycelial fungi were found at La Gorce Mountains (86°30′S, 147°W) at an altitude of about 1750 m. The lichens Lecidea cancriformis and Carbonea vorticosa occurred at a single site which is the most southerly record of lichens. Thousands of small ponds covered extensive ice-cored moraine. Nine ponds sampled had about 30 cm of ice overlying about 26 cm of water and contained algal mats dominated by Phormidium autumnale and cf. Leptolyngbya fragilis. The very low conductivity waters had high nitrate and low dissolved reactive phosphorus concentrations. Of 124 soil samples, five contained visible algae. In 32 there were only microscopic growths but no algae were detected in 87 samples, possibly because of lack of water for much of summer. A visible mat dominated by Hammatoidea normanni occurred in a rock fissure at the lichen site. At Price Bluff, green patches of Desmococcus cf.olivaceus , up to 20 cm 2 , were scattered over the moraine. Growths were revealed at the soil–ice interface when overlying soil up to one centimetre thick was removed. It is suggested that although dispersal of algae from local populations may be readily achieved establishment of populations is a rare event outside the pond environment. |
format |
Article in Journal/Newspaper |
author |
Broady, Paul A. Weinstein, Richard N. |
spellingShingle |
Broady, Paul A. Weinstein, Richard N. Algae, lichens and fungi in La Gorce Mountains, Antarctica |
author_facet |
Broady, Paul A. Weinstein, Richard N. |
author_sort |
Broady, Paul A. |
title |
Algae, lichens and fungi in La Gorce Mountains, Antarctica |
title_short |
Algae, lichens and fungi in La Gorce Mountains, Antarctica |
title_full |
Algae, lichens and fungi in La Gorce Mountains, Antarctica |
title_fullStr |
Algae, lichens and fungi in La Gorce Mountains, Antarctica |
title_full_unstemmed |
Algae, lichens and fungi in La Gorce Mountains, Antarctica |
title_sort |
algae, lichens and fungi in la gorce mountains, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0954102098000467 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000467 |
genre |
Antarc* Antarctic Science Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica |
op_source |
Antarctic Science volume 10, issue 4, page 376-385 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102098000467 |
container_title |
Antarctic Science |
container_volume |
10 |
container_issue |
4 |
container_start_page |
376 |
op_container_end_page |
385 |
_version_ |
1810493530431291392 |