The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats
Specimens of Prasiola collected from habitats not experiencing nutrient enrichment from birds are considered to be P. calophylla . The alga has three distinct growth forms; uniseriate filaments, narrow ribbons and expanded sheets. Reproduction is by aplanospores and fragmentation of the thallus. The...
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Language: | English |
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Cambridge University Press (CUP)
1989
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Online Access: | http://dx.doi.org/10.1017/s0954102089000179 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000179 |
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crcambridgeupr:10.1017/s0954102089000179 2024-05-19T07:29:45+00:00 The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats Broady, Paul A. 1989 http://dx.doi.org/10.1017/s0954102089000179 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000179 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 1, issue 2, page 109-118 ISSN 0954-1020 1365-2079 journal-article 1989 crcambridgeupr https://doi.org/10.1017/s0954102089000179 2024-05-02T06:51:17Z Specimens of Prasiola collected from habitats not experiencing nutrient enrichment from birds are considered to be P. calophylla . The alga has three distinct growth forms; uniseriate filaments, narrow ribbons and expanded sheets. Reproduction is by aplanospores and fragmentation of the thallus. The known Antarctic distribution is disjunct with only two records outside Victoria Land. However, it is widespread in the latter region. The alga is absent from areas where there are high salt concentrations in waters and soils. Elsewhere it is common in streams and on water-flushed ground as well as occurring on terminal ice-faces of glaciers and as chasmoendolithic growths. Ribbons are found mostly on the lower surfaces of stones, and uniseriate filaments on the exposed surfaces of the stream beds of seasonal melt streams. Expanded sheets occur in less vigorous water flows. There is a need for further culture and field studies in order to understand the factors which control morphological development and distribution patterns. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Victoria Land Cambridge University Press Antarctic Science 1 2 109 118 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Specimens of Prasiola collected from habitats not experiencing nutrient enrichment from birds are considered to be P. calophylla . The alga has three distinct growth forms; uniseriate filaments, narrow ribbons and expanded sheets. Reproduction is by aplanospores and fragmentation of the thallus. The known Antarctic distribution is disjunct with only two records outside Victoria Land. However, it is widespread in the latter region. The alga is absent from areas where there are high salt concentrations in waters and soils. Elsewhere it is common in streams and on water-flushed ground as well as occurring on terminal ice-faces of glaciers and as chasmoendolithic growths. Ribbons are found mostly on the lower surfaces of stones, and uniseriate filaments on the exposed surfaces of the stream beds of seasonal melt streams. Expanded sheets occur in less vigorous water flows. There is a need for further culture and field studies in order to understand the factors which control morphological development and distribution patterns. |
format |
Article in Journal/Newspaper |
author |
Broady, Paul A. |
spellingShingle |
Broady, Paul A. The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
author_facet |
Broady, Paul A. |
author_sort |
Broady, Paul A. |
title |
The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
title_short |
The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
title_full |
The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
title_fullStr |
The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
title_full_unstemmed |
The distribution of Prasiola calophylla (Carmich.) Menegh. (Chlorophyta) in Antarctic freshwater and terrestrial habitats |
title_sort |
distribution of prasiola calophylla (carmich.) menegh. (chlorophyta) in antarctic freshwater and terrestrial habitats |
publisher |
Cambridge University Press (CUP) |
publishDate |
1989 |
url |
http://dx.doi.org/10.1017/s0954102089000179 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102089000179 |
genre |
Antarc* Antarctic Antarctic Science Victoria Land |
genre_facet |
Antarc* Antarctic Antarctic Science Victoria Land |
op_source |
Antarctic Science volume 1, issue 2, page 109-118 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102089000179 |
container_title |
Antarctic Science |
container_volume |
1 |
container_issue |
2 |
container_start_page |
109 |
op_container_end_page |
118 |
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1799481263795470336 |