Alien species and propagules in the Antarctic: movements though space and time
Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post-dispersal processes because of the difficulties of measuring propagule pressure and the detecting of newly established species. Here the Antarctic is used as a model system in which to quant...
Main Author: | |
---|---|
Other Authors: | |
Format: | Other/Unknown Material |
Language: | English |
Published: |
Zenodo
2009
|
Subjects: | |
Online Access: | https://doi.org/10.5281/zenodo.4751596 |
id |
ftzenodo:oai:zenodo.org:4751596 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:4751596 2024-09-09T19:05:03+00:00 Alien species and propagules in the Antarctic: movements though space and time Lee, Jennifer Chown, Steven 2009-02-19 https://doi.org/10.5281/zenodo.4751596 eng eng Zenodo https://zenodo.org/communities/cib https://doi.org/10.5281/zenodo.4751595 https://doi.org/10.5281/zenodo.4751596 oai:zenodo.org:4751596 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Botany PhD info:eu-repo/semantics/other 2009 ftzenodo https://doi.org/10.5281/zenodo.475159610.5281/zenodo.4751595 2024-07-27T04:27:01Z Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post-dispersal processes because of the difficulties of measuring propagule pressure and the detecting of newly established species. Here the Antarctic is used as a model system in which to quantify the initial dispersal of alien species and investigate the factors that contribute to the establishment and range dynamics of alien species once they have arrived in the region. Human movements are known to transport alien species into the Antarctic, some of which have successfully established and had wide ranging consequences in recipient ecosystems. Considering terrestrial flora, this research found that over 700 seeds from 99 taxa, including some species known to be invasive, are transported into the Antarctic each year in association with South African National Antarctic Programme (SANAP) passenger luggage and cargo. The first ever assessment of propagule drop-off indicated that 30-50% of these propagules will enter the recipient environment. Further results suggested that the construction of the British Antarctic Survey Halley VI station will facilitate the transport of over 5000 seeds from 34 taxa into the region, making this a significant pathway for introductions. Propagule pressure due to SANAP logistics is also considerable for marine species. Fouling assemblages on the external hull surfaces of the SANAP resupply vessel, the SA Agulhas, form only once the vessel's anti-fouling paint has been damaged by travel through sea ice and are characterised by low diversity. Ice scour prevents fouling assemblages from being transported to the Antarctic continent, but assemblages remain largely intact when travelling to sub-Antarctic Islands. In the sea-chests of the vessel populations of a known invasive, Mytilus galloprovincialis, were found with some individuals having survived transportation to the Antarctic region on multiple occasions. Once species have overcome initial dispersal barriers, they face further ... Other/Unknown Material Antarc* Antarctic British Antarctic Survey Sea ice South African National Antarctic Programme Zenodo Antarctic The Antarctic |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Botany PhD |
spellingShingle |
Botany PhD Lee, Jennifer Alien species and propagules in the Antarctic: movements though space and time |
topic_facet |
Botany PhD |
description |
Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post-dispersal processes because of the difficulties of measuring propagule pressure and the detecting of newly established species. Here the Antarctic is used as a model system in which to quantify the initial dispersal of alien species and investigate the factors that contribute to the establishment and range dynamics of alien species once they have arrived in the region. Human movements are known to transport alien species into the Antarctic, some of which have successfully established and had wide ranging consequences in recipient ecosystems. Considering terrestrial flora, this research found that over 700 seeds from 99 taxa, including some species known to be invasive, are transported into the Antarctic each year in association with South African National Antarctic Programme (SANAP) passenger luggage and cargo. The first ever assessment of propagule drop-off indicated that 30-50% of these propagules will enter the recipient environment. Further results suggested that the construction of the British Antarctic Survey Halley VI station will facilitate the transport of over 5000 seeds from 34 taxa into the region, making this a significant pathway for introductions. Propagule pressure due to SANAP logistics is also considerable for marine species. Fouling assemblages on the external hull surfaces of the SANAP resupply vessel, the SA Agulhas, form only once the vessel's anti-fouling paint has been damaged by travel through sea ice and are characterised by low diversity. Ice scour prevents fouling assemblages from being transported to the Antarctic continent, but assemblages remain largely intact when travelling to sub-Antarctic Islands. In the sea-chests of the vessel populations of a known invasive, Mytilus galloprovincialis, were found with some individuals having survived transportation to the Antarctic region on multiple occasions. Once species have overcome initial dispersal barriers, they face further ... |
author2 |
Chown, Steven |
format |
Other/Unknown Material |
author |
Lee, Jennifer |
author_facet |
Lee, Jennifer |
author_sort |
Lee, Jennifer |
title |
Alien species and propagules in the Antarctic: movements though space and time |
title_short |
Alien species and propagules in the Antarctic: movements though space and time |
title_full |
Alien species and propagules in the Antarctic: movements though space and time |
title_fullStr |
Alien species and propagules in the Antarctic: movements though space and time |
title_full_unstemmed |
Alien species and propagules in the Antarctic: movements though space and time |
title_sort |
alien species and propagules in the antarctic: movements though space and time |
publisher |
Zenodo |
publishDate |
2009 |
url |
https://doi.org/10.5281/zenodo.4751596 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic British Antarctic Survey Sea ice South African National Antarctic Programme |
genre_facet |
Antarc* Antarctic British Antarctic Survey Sea ice South African National Antarctic Programme |
op_relation |
https://zenodo.org/communities/cib https://doi.org/10.5281/zenodo.4751595 https://doi.org/10.5281/zenodo.4751596 oai:zenodo.org:4751596 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.475159610.5281/zenodo.4751595 |
_version_ |
1809819035194359808 |