Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands
Signy Island has experienced a dramatic increase in fur seal numbers over recent decades, which has led to the devastation of lowland terrestrial vegetation, with the eradication of moss turfs and carpets being the most prominent feature. Here we demonstrate that fur seals also affect the other majo...
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Online Access: | http://hdl.handle.net/11383/1742084 https://doi.org/10.1017/S0954102010000684 |
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/1742084 2024-04-14T08:04:18+00:00 Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands Favero Longo SE Worland MR Convey P Piervittori R CANNONE, NICOLETTA GUGLIELMIN, MAURO Favero Longo, Se Cannone, Nicoletta Worland, Mr Convey, P Piervittori, R Guglielmin, Mauro 2011 http://hdl.handle.net/11383/1742084 https://doi.org/10.1017/S0954102010000684 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000287465600008 volume:23 firstpage:65 lastpage:77 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11383/1742084 doi:10.1017/S0954102010000684 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79951774286 community change habitat disturbance nitrophilous lichens pinnipeds terricolous-muscicolous lichens vegetation trampling info:eu-repo/semantics/article 2011 ftuninsubriairis https://doi.org/10.1017/S0954102010000684 2024-03-21T18:56:13Z Signy Island has experienced a dramatic increase in fur seal numbers over recent decades, which has led to the devastation of lowland terrestrial vegetation, with the eradication of moss turfs and carpets being the most prominent feature. Here we demonstrate that fur seals also affect the other major component of this region's typical cryptogamic vegetation, the lichens, although with a lower decrease in variability and abundance than for bryophytes. Classification (UPGMA) and ordination (Principal Coordinate Analysis) of vegetation data highlight differences in composition and abundance of lichen communities between areas invaded by fur seals and contiguous areas protected from these animals. Multivariate analysis relating lichen communities to environmental parameters, including animal abundance and soil chemistry (Canonical Correspondence Analysis), suggests that fur seal trampling results in the destruction of muscicolous-terricolous lichens, including several cosmopolitan and bipolar fruticose species. In addition, animal excretion favours an increase in nitrophilous crustose species, a group which typically characterizes areas influenced by seabirds and includes several Antarctic endemics. The potential effect of such animal-driven changes in vegetation on the fragile terrestrial ecosystem (e.g. through modification of the ground surface temperature) confirms the importance of indirect environmental processes in Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Signy Island South Orkney Islands IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Antarctic South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Antarctic Science 23 1 65 77 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
unknown |
topic |
community change habitat disturbance nitrophilous lichens pinnipeds terricolous-muscicolous lichens vegetation trampling |
spellingShingle |
community change habitat disturbance nitrophilous lichens pinnipeds terricolous-muscicolous lichens vegetation trampling Favero Longo SE Worland MR Convey P Piervittori R CANNONE, NICOLETTA GUGLIELMIN, MAURO Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
topic_facet |
community change habitat disturbance nitrophilous lichens pinnipeds terricolous-muscicolous lichens vegetation trampling |
description |
Signy Island has experienced a dramatic increase in fur seal numbers over recent decades, which has led to the devastation of lowland terrestrial vegetation, with the eradication of moss turfs and carpets being the most prominent feature. Here we demonstrate that fur seals also affect the other major component of this region's typical cryptogamic vegetation, the lichens, although with a lower decrease in variability and abundance than for bryophytes. Classification (UPGMA) and ordination (Principal Coordinate Analysis) of vegetation data highlight differences in composition and abundance of lichen communities between areas invaded by fur seals and contiguous areas protected from these animals. Multivariate analysis relating lichen communities to environmental parameters, including animal abundance and soil chemistry (Canonical Correspondence Analysis), suggests that fur seal trampling results in the destruction of muscicolous-terricolous lichens, including several cosmopolitan and bipolar fruticose species. In addition, animal excretion favours an increase in nitrophilous crustose species, a group which typically characterizes areas influenced by seabirds and includes several Antarctic endemics. The potential effect of such animal-driven changes in vegetation on the fragile terrestrial ecosystem (e.g. through modification of the ground surface temperature) confirms the importance of indirect environmental processes in Antarctica. |
author2 |
Favero Longo, Se Cannone, Nicoletta Worland, Mr Convey, P Piervittori, R Guglielmin, Mauro |
format |
Article in Journal/Newspaper |
author |
Favero Longo SE Worland MR Convey P Piervittori R CANNONE, NICOLETTA GUGLIELMIN, MAURO |
author_facet |
Favero Longo SE Worland MR Convey P Piervittori R CANNONE, NICOLETTA GUGLIELMIN, MAURO |
author_sort |
Favero Longo SE |
title |
Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
title_short |
Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
title_full |
Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
title_fullStr |
Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
title_full_unstemmed |
Changes in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands |
title_sort |
changes in lichen diversity and community structure with fur seal population increase on signy island, south orkney islands |
publishDate |
2011 |
url |
http://hdl.handle.net/11383/1742084 https://doi.org/10.1017/S0954102010000684 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic South Orkney Islands Signy Island |
geographic_facet |
Antarctic South Orkney Islands Signy Island |
genre |
Antarc* Antarctic Antarctica Signy Island South Orkney Islands |
genre_facet |
Antarc* Antarctic Antarctica Signy Island South Orkney Islands |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000287465600008 volume:23 firstpage:65 lastpage:77 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11383/1742084 doi:10.1017/S0954102010000684 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79951774286 |
op_doi |
https://doi.org/10.1017/S0954102010000684 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
1 |
container_start_page |
65 |
op_container_end_page |
77 |
_version_ |
1796300753201004544 |