Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula
The origins of the freshwater fauna that inhabits Antarctic lakes are poorly known. The species present today could be relict species that have survived Quaternary glaciations on the continent, or Holocene migrants from more temperate regions. One approach to investigating these questions is to stud...
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Online Access: | https://doi.org/10.1191/0959683606hl959rp http://ecite.utas.edu.au/41992 |
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ftunivtasecite:oai:ecite.utas.edu.au:41992 2023-05-15T13:40:51+02:00 Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula Gibson, JAE Zale, RJ 2006 https://doi.org/10.1191/0959683606hl959rp http://ecite.utas.edu.au/41992 en eng Sage Publications Ltd. http://dx.doi.org/10.1191/0959683606hl959rp Gibson, JAE and Zale, RJ, Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula, The Holocene, 16, (5) pp. 625-634. ISSN 0959-6836 (2006) [Refereed Article] http://ecite.utas.edu.au/41992 Biological Sciences Ecology Palaeoecology Refereed Article PeerReviewed 2006 ftunivtasecite https://doi.org/10.1191/0959683606hl959rp 2019-12-13T21:18:40Z The origins of the freshwater fauna that inhabits Antarctic lakes are poorly known. The species present today could be relict species that have survived Quaternary glaciations on the continent, or Holocene migrants from more temperate regions. One approach to investigating these questions is to study faunal microfossils in lake sediment. This approach was applied to a 293 cm sediment core from Lake Boeckella, located at the northern tip of the Antarctic Peninsula. The microfossils indicated that most of the metazoan species that occur in the lake today have been present since soon after the lake's formation c. 5.5 ka ago. In particular, the centropagid copepod Boeckella poppei (Mrzek) has been present throughout the lake's history, suggesting a local source for this species. The development of biodiversity in the lake with time was in general more consistent with local (Antarctic) rather than distant (South American) sources, though an alternative explanation is that dispersal to Antarctica was more efficient in the mid-Holocene. Evidence of dispersal from extra-continental sites comes from the scattered occurrence throughout the core of Eubosmina chilensis (Daday), a South American species that does not reach the Antarctic or the sub-Antarctic islands at present, and which failed to establish a permanent population in the lake. 2006 SAGE Publications. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica eCite UTAS (University of Tasmania) Antarctic Antarctic Peninsula Boeckella ENVELOPE(-56.999,-56.999,-63.404,-63.404) Lake Boeckella ENVELOPE(-57.000,-57.000,-63.400,-63.400) The Antarctic The Holocene 16 5 625 634 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Palaeoecology |
spellingShingle |
Biological Sciences Ecology Palaeoecology Gibson, JAE Zale, RJ Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
topic_facet |
Biological Sciences Ecology Palaeoecology |
description |
The origins of the freshwater fauna that inhabits Antarctic lakes are poorly known. The species present today could be relict species that have survived Quaternary glaciations on the continent, or Holocene migrants from more temperate regions. One approach to investigating these questions is to study faunal microfossils in lake sediment. This approach was applied to a 293 cm sediment core from Lake Boeckella, located at the northern tip of the Antarctic Peninsula. The microfossils indicated that most of the metazoan species that occur in the lake today have been present since soon after the lake's formation c. 5.5 ka ago. In particular, the centropagid copepod Boeckella poppei (Mrzek) has been present throughout the lake's history, suggesting a local source for this species. The development of biodiversity in the lake with time was in general more consistent with local (Antarctic) rather than distant (South American) sources, though an alternative explanation is that dispersal to Antarctica was more efficient in the mid-Holocene. Evidence of dispersal from extra-continental sites comes from the scattered occurrence throughout the core of Eubosmina chilensis (Daday), a South American species that does not reach the Antarctic or the sub-Antarctic islands at present, and which failed to establish a permanent population in the lake. 2006 SAGE Publications. |
format |
Article in Journal/Newspaper |
author |
Gibson, JAE Zale, RJ |
author_facet |
Gibson, JAE Zale, RJ |
author_sort |
Gibson, JAE |
title |
Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
title_short |
Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
title_full |
Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
title_fullStr |
Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
title_full_unstemmed |
Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
title_sort |
holocene development of the fauna of lake boeckella, northern antarctic peninsula |
publisher |
Sage Publications Ltd. |
publishDate |
2006 |
url |
https://doi.org/10.1191/0959683606hl959rp http://ecite.utas.edu.au/41992 |
long_lat |
ENVELOPE(-56.999,-56.999,-63.404,-63.404) ENVELOPE(-57.000,-57.000,-63.400,-63.400) |
geographic |
Antarctic Antarctic Peninsula Boeckella Lake Boeckella The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Boeckella Lake Boeckella The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
http://dx.doi.org/10.1191/0959683606hl959rp Gibson, JAE and Zale, RJ, Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula, The Holocene, 16, (5) pp. 625-634. ISSN 0959-6836 (2006) [Refereed Article] http://ecite.utas.edu.au/41992 |
op_doi |
https://doi.org/10.1191/0959683606hl959rp |
container_title |
The Holocene |
container_volume |
16 |
container_issue |
5 |
container_start_page |
625 |
op_container_end_page |
634 |
_version_ |
1766141174101311488 |