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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Inter-Research
2007
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Online Access: | https://eprints.utas.edu.au/3931/ https://eprints.utas.edu.au/3931/1/3931.pdf https://doi.org/10.3354/meps06966 |
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ftunivtasmania:oai:eprints.utas.edu.au:3931 2023-05-15T13:22:01+02:00 History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica Post, AL Hemer, M O'Brien, PE Roberts, D Craven, M 2007 application/pdf https://eprints.utas.edu.au/3931/ https://eprints.utas.edu.au/3931/1/3931.pdf https://doi.org/10.3354/meps06966 en eng Inter-Research https://eprints.utas.edu.au/3931/1/3931.pdf Post, AL, Hemer, M, O'Brien, PE, Roberts, D and Craven, M 2007 , 'History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica' , Marine Ecology Progress Series, vol. 344 , pp. 29-37 , doi:10.3354/meps06966 <http://dx.doi.org/10.3354/meps06966>. cc_utas 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) Ice shelf · Succession · Holocene · Benthic fauna · Microfossil Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.3354/meps06966 2020-10-12T22:16:05Z 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. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf Prydz Bay University of Tasmania: UTas ePrints Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) East Antarctica Prydz Bay Marine Ecology Progress Series 344 29 37 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) Ice shelf · Succession · Holocene · Benthic fauna · Microfossil |
spellingShingle |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) Ice shelf · Succession · Holocene · Benthic fauna · Microfossil Post, AL Hemer, M O'Brien, PE Roberts, D Craven, M History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica |
topic_facet |
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology) Ice shelf · Succession · Holocene · Benthic fauna · Microfossil |
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. |
format |
Article in Journal/Newspaper |
author |
Post, AL Hemer, M O'Brien, PE Roberts, D Craven, M |
author_facet |
Post, AL Hemer, M 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://eprints.utas.edu.au/3931/ https://eprints.utas.edu.au/3931/1/3931.pdf https://doi.org/10.3354/meps06966 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
Amery Amery Ice Shelf East Antarctica Prydz Bay |
geographic_facet |
Amery Amery Ice Shelf East Antarctica Prydz Bay |
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 |
https://eprints.utas.edu.au/3931/1/3931.pdf Post, AL, Hemer, M, O'Brien, PE, Roberts, D and Craven, M 2007 , 'History of benthic colonisation beneath the Amery Ice Shelf, East Antarctica' , Marine Ecology Progress Series, vol. 344 , pp. 29-37 , doi:10.3354/meps06966 <http://dx.doi.org/10.3354/meps06966>. |
op_rights |
cc_utas |
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_ |
1766362924576669696 |