Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica
The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not norma...
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/88219 2023-05-15T13:56:14+02:00 Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica Skotnicki, Mary Bargagli, R Ninham, J 2015-12-13T23:13:37Z http://hdl.handle.net/1885/88219 unknown Springer 0722-4060 http://hdl.handle.net/1885/88219 Polar Biology Keywords: bryophyte colonization genetic variation geothermal system moss Antarctica Bryophyta bryophytes Campylopus Campylopus pyriformis Pohlia Pohlia nutans Pteridophyta Victoria Journal article 2015 ftanucanberra 2015-12-21T23:56:51Z The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not normally grow in Antarctica at such elevations. Specimens from several moss patches within two sites of 80 m2 total area were analysed genetically to determine whether they all originated from a single colonisation event, whether the population is genetically diverse, and whether the temperature range of geothermal ground (17-35°C under moss colonies) affects rates of mutation. Both the RAPD technique and DNA sequencing of the conserved nuclear ribosomal RNA 18S-26S ITS region were used to compare this extremely isolated population with specimens of P. nutans from elsewhere in Antarctica. Like the moss Campylopus pyriformis on volcanic Mt. Melbourne, the Pohlia population exhibits low levels of genetic diversity and appears to be derived from a single immigration event followed by vegetative growth, mutation and dispersal. Article in Journal/Newspaper Antarc* Antarctica Polar Biology Victoria Land Australian National University: ANU Digital Collections Mount Rittmann ENVELOPE(165.500,165.500,-73.450,-73.450) Rittmann ENVELOPE(165.500,165.500,-73.450,-73.450) Victoria Land |
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Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: bryophyte colonization genetic variation geothermal system moss Antarctica Bryophyta bryophytes Campylopus Campylopus pyriformis Pohlia Pohlia nutans Pteridophyta Victoria |
spellingShingle |
Keywords: bryophyte colonization genetic variation geothermal system moss Antarctica Bryophyta bryophytes Campylopus Campylopus pyriformis Pohlia Pohlia nutans Pteridophyta Victoria Skotnicki, Mary Bargagli, R Ninham, J Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
topic_facet |
Keywords: bryophyte colonization genetic variation geothermal system moss Antarctica Bryophyta bryophytes Campylopus Campylopus pyriformis Pohlia Pohlia nutans Pteridophyta Victoria |
description |
The only known population of the moss Pohlia nutans in continental Antarctica occurs on geothermally heated ground of volcanic Mt. Rittmann in northern Victoria Land. Colonisation by this bryophyte is due to peculiar environmental characteristics of the geothermal ground, because mosses do not normally grow in Antarctica at such elevations. Specimens from several moss patches within two sites of 80 m2 total area were analysed genetically to determine whether they all originated from a single colonisation event, whether the population is genetically diverse, and whether the temperature range of geothermal ground (17-35°C under moss colonies) affects rates of mutation. Both the RAPD technique and DNA sequencing of the conserved nuclear ribosomal RNA 18S-26S ITS region were used to compare this extremely isolated population with specimens of P. nutans from elsewhere in Antarctica. Like the moss Campylopus pyriformis on volcanic Mt. Melbourne, the Pohlia population exhibits low levels of genetic diversity and appears to be derived from a single immigration event followed by vegetative growth, mutation and dispersal. |
format |
Article in Journal/Newspaper |
author |
Skotnicki, Mary Bargagli, R Ninham, J |
author_facet |
Skotnicki, Mary Bargagli, R Ninham, J |
author_sort |
Skotnicki, Mary |
title |
Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
title_short |
Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
title_full |
Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
title_fullStr |
Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
title_full_unstemmed |
Genetic diversity in the moss Pohlia nutans on geothermal ground of Mount Rittmann, Victoria Land, Antarctica |
title_sort |
genetic diversity in the moss pohlia nutans on geothermal ground of mount rittmann, victoria land, antarctica |
publisher |
Springer |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/88219 |
long_lat |
ENVELOPE(165.500,165.500,-73.450,-73.450) ENVELOPE(165.500,165.500,-73.450,-73.450) |
geographic |
Mount Rittmann Rittmann Victoria Land |
geographic_facet |
Mount Rittmann Rittmann Victoria Land |
genre |
Antarc* Antarctica Polar Biology Victoria Land |
genre_facet |
Antarc* Antarctica Polar Biology Victoria Land |
op_source |
Polar Biology |
op_relation |
0722-4060 http://hdl.handle.net/1885/88219 |
_version_ |
1766263601574707200 |