Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica
Mount Melbourne in northern Victoria Land, Antarctica, is a glaciated 2733 m volcanic cone. The moss Campylopus pyriformis occurs on two small areas of steam-warmed snow-free ground near its summit. This moss species also occurs in temperate regions world-wide, but has not been recorded elsewhere in...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
British Antarctic Survey
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/1885/92601 |
id |
ftanucanberra:oai:digitalcollections.anu.edu.au:1885/92601 |
---|---|
record_format |
openpolar |
spelling |
ftanucanberra:oai:digitalcollections.anu.edu.au:1885/92601 2023-05-15T13:56:14+02:00 Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica Skotnicki, Mary Selkirk, Patricia M Broady, P Adam, K D Ninham, J 2015-12-13T23:25:52Z http://hdl.handle.net/1885/92601 unknown British Antarctic Survey 0954-1020 http://hdl.handle.net/1885/92601 Antarctic Science Keywords: Antarctica climate gametophyte genetic variability geographic distribution molecular evolution mountain mutation plant dispersal random amplified polymorphic DNA genetic variation geothermal system moss volcano Antarctica Bryophyta bryophy Campylopus pyriformis Genetic diversity Geothermal ground RAPDs Journal article 2015 ftanucanberra 2015-12-21T23:59:13Z Mount Melbourne in northern Victoria Land, Antarctica, is a glaciated 2733 m volcanic cone. The moss Campylopus pyriformis occurs on two small areas of steam-warmed snow-free ground near its summit. This moss species also occurs in temperate regions world-wide, but has not been recorded elsewhere in continental Antarctica. RAPD (Random Amplified Polymorphic DNA) studies of 26 samples of C. pyriformis from two areas of heated ground on Mount Melbourne showed there was genetic diversity within the population. Genetic evidence for dispersal between the two sites, together with some genetic variation within individual colonies, indicates a single colonisation event has probably occurred at this extremely isolated location followed by multiple mutations. A single sample of moss protonema was collected 25 years ago from steam-warmed ground near the summit of another volcano, Mount Erebus (3794 m), on Ross Island some 300 km south of Mount Melbourne. The moss could not be identified based on morphological and reproductive criteria, as all attempts to differentiate it to a recognisable gametophyte were unsuccessful. The RAPD technique has now shown it to be C. pyriformis, and closely related to the population on Mount Melbourne. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Ross Island Victoria Land Australian National University: ANU Digital Collections Mount Erebus ENVELOPE(167.167,167.167,-77.533,-77.533) Mount Melbourne ENVELOPE(164.700,164.700,-74.350,-74.350) Ross Island Victoria Land |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Antarctica climate gametophyte genetic variability geographic distribution molecular evolution mountain mutation plant dispersal random amplified polymorphic DNA genetic variation geothermal system moss volcano Antarctica Bryophyta bryophy Campylopus pyriformis Genetic diversity Geothermal ground RAPDs |
spellingShingle |
Keywords: Antarctica climate gametophyte genetic variability geographic distribution molecular evolution mountain mutation plant dispersal random amplified polymorphic DNA genetic variation geothermal system moss volcano Antarctica Bryophyta bryophy Campylopus pyriformis Genetic diversity Geothermal ground RAPDs Skotnicki, Mary Selkirk, Patricia M Broady, P Adam, K D Ninham, J Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
topic_facet |
Keywords: Antarctica climate gametophyte genetic variability geographic distribution molecular evolution mountain mutation plant dispersal random amplified polymorphic DNA genetic variation geothermal system moss volcano Antarctica Bryophyta bryophy Campylopus pyriformis Genetic diversity Geothermal ground RAPDs |
description |
Mount Melbourne in northern Victoria Land, Antarctica, is a glaciated 2733 m volcanic cone. The moss Campylopus pyriformis occurs on two small areas of steam-warmed snow-free ground near its summit. This moss species also occurs in temperate regions world-wide, but has not been recorded elsewhere in continental Antarctica. RAPD (Random Amplified Polymorphic DNA) studies of 26 samples of C. pyriformis from two areas of heated ground on Mount Melbourne showed there was genetic diversity within the population. Genetic evidence for dispersal between the two sites, together with some genetic variation within individual colonies, indicates a single colonisation event has probably occurred at this extremely isolated location followed by multiple mutations. A single sample of moss protonema was collected 25 years ago from steam-warmed ground near the summit of another volcano, Mount Erebus (3794 m), on Ross Island some 300 km south of Mount Melbourne. The moss could not be identified based on morphological and reproductive criteria, as all attempts to differentiate it to a recognisable gametophyte were unsuccessful. The RAPD technique has now shown it to be C. pyriformis, and closely related to the population on Mount Melbourne. |
format |
Article in Journal/Newspaper |
author |
Skotnicki, Mary Selkirk, Patricia M Broady, P Adam, K D Ninham, J |
author_facet |
Skotnicki, Mary Selkirk, Patricia M Broady, P Adam, K D Ninham, J |
author_sort |
Skotnicki, Mary |
title |
Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
title_short |
Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
title_full |
Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
title_fullStr |
Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
title_full_unstemmed |
Dispersal of the moss Campylopus pyriformis on geothermal ground near the summits of Mount Erebus and Mount Melbourne, Victoria Land, Antarctica |
title_sort |
dispersal of the moss campylopus pyriformis on geothermal ground near the summits of mount erebus and mount melbourne, victoria land, antarctica |
publisher |
British Antarctic Survey |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/92601 |
long_lat |
ENVELOPE(167.167,167.167,-77.533,-77.533) ENVELOPE(164.700,164.700,-74.350,-74.350) |
geographic |
Mount Erebus Mount Melbourne Ross Island Victoria Land |
geographic_facet |
Mount Erebus Mount Melbourne Ross Island Victoria Land |
genre |
Antarc* Antarctic Science Antarctica Ross Island Victoria Land |
genre_facet |
Antarc* Antarctic Science Antarctica Ross Island Victoria Land |
op_source |
Antarctic Science |
op_relation |
0954-1020 http://hdl.handle.net/1885/92601 |
_version_ |
1766263604552663040 |