History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica
This study presents compelling evidence for a diverse and abundant seabed community that developed over the course of the Holocene beneath the Amery Ice Shelf, East Antarctica. Fossil analysis of a 47 cm long sediment core revealed a rich modern fauna dominated by filter feeders (sponges and bryozoa...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://doi.org/10.3354/meps06966 http://ecite.utas.edu.au/50242 |
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ftunivtasecite:oai:ecite.utas.edu.au:50242 2023-05-15T13:22:01+02:00 History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica Post, AL Hemer, MA O'Brien, PE Roberts, D Craven, M 2007 https://doi.org/10.3354/meps06966 http://ecite.utas.edu.au/50242 en eng Inter-Research http://dx.doi.org/10.3354/meps06966 Post, AL and Hemer, MA and O'Brien, PE and Roberts, D and Craven, M, History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica, Marine Ecology Progress Series, 344, (23 August 2007) pp. 29-37. ISSN 0171-8630 (2007) [Refereed Article] http://ecite.utas.edu.au/50242 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2007 ftunivtasecite https://doi.org/10.3354/meps06966 2019-12-13T21:24:38Z This study presents compelling evidence for a diverse and abundant seabed community that developed over the course of the Holocene beneath the Amery Ice Shelf, East Antarctica. Fossil analysis of a 47 cm long sediment core revealed a rich modern fauna dominated by filter feeders (sponges and bryozoans). The down-core assemblage indicated a succession in the colonisation of this site. The lower portion of the core (before 9600 yr BP) was completely devoid of preserved fauna. The first colonisers (at 10 200 yr BP) were mobile benthic organisms. Their occurrence was matched by the first appearance of planktonic taxa, indicating a retreat of the ice shelf following the last glaciation to within sufficient distance to advect planktonic particles via bottom currents. The benthic infauna and filter feeders emerged during the peak abundance of the planktonic organisms, indicating their dependence on the food supply sourced from the open shelf waters of Prydz Bay. Understanding patterns of species succession in this environment has important implications for determining the potential significance of future ice shelf collapse. Inter-Research 2007. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf Prydz Bay eCite UTAS (University of Tasmania) East Antarctica Prydz Bay Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Marine Ecology Progress Series 344 29 37 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Post, AL Hemer, MA O'Brien, PE Roberts, D Craven, M History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
This study presents compelling evidence for a diverse and abundant seabed community that developed over the course of the Holocene beneath the Amery Ice Shelf, East Antarctica. Fossil analysis of a 47 cm long sediment core revealed a rich modern fauna dominated by filter feeders (sponges and bryozoans). The down-core assemblage indicated a succession in the colonisation of this site. The lower portion of the core (before 9600 yr BP) was completely devoid of preserved fauna. The first colonisers (at 10 200 yr BP) were mobile benthic organisms. Their occurrence was matched by the first appearance of planktonic taxa, indicating a retreat of the ice shelf following the last glaciation to within sufficient distance to advect planktonic particles via bottom currents. The benthic infauna and filter feeders emerged during the peak abundance of the planktonic organisms, indicating their dependence on the food supply sourced from the open shelf waters of Prydz Bay. Understanding patterns of species succession in this environment has important implications for determining the potential significance of future ice shelf collapse. Inter-Research 2007. |
format |
Article in Journal/Newspaper |
author |
Post, AL Hemer, MA O'Brien, PE Roberts, D Craven, M |
author_facet |
Post, AL Hemer, MA O'Brien, PE Roberts, D Craven, M |
author_sort |
Post, AL |
title |
History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
title_short |
History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
title_full |
History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
title_fullStr |
History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
title_full_unstemmed |
History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
title_sort |
history of benthic colonisation beneath the amery ice shelf, east antarctica |
publisher |
Inter-Research |
publishDate |
2007 |
url |
https://doi.org/10.3354/meps06966 http://ecite.utas.edu.au/50242 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
East Antarctica Prydz Bay Amery Amery Ice Shelf |
geographic_facet |
East Antarctica Prydz Bay Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf Prydz Bay |
genre_facet |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf Prydz Bay |
op_relation |
http://dx.doi.org/10.3354/meps06966 Post, AL and Hemer, MA and O'Brien, PE and Roberts, D and Craven, M, History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica, Marine Ecology Progress Series, 344, (23 August 2007) pp. 29-37. ISSN 0171-8630 (2007) [Refereed Article] http://ecite.utas.edu.au/50242 |
op_doi |
https://doi.org/10.3354/meps06966 |
container_title |
Marine Ecology Progress Series |
container_volume |
344 |
container_start_page |
29 |
op_container_end_page |
37 |
_version_ |
1766362835091193856 |