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: | http://dx.doi.org/10.1191/0959683606hl959rp http://journals.sagepub.com/doi/pdf/10.1191/0959683606hl959rp |
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crsagepubl:10.1191/0959683606hl959rp 2023-05-15T14:07:54+02:00 Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula Gibson, John A.E. Zale, Rolf 2006 http://dx.doi.org/10.1191/0959683606hl959rp http://journals.sagepub.com/doi/pdf/10.1191/0959683606hl959rp en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 16, issue 5, page 625-634 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2006 crsagepubl https://doi.org/10.1191/0959683606hl959rp 2022-08-12T11:32:18Z 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 (Mrázek) 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica SAGE Publications (via Crossref) 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 |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Gibson, John A.E. Zale, Rolf Holocene development of the fauna of Lake Boeckella, northern Antarctic Peninsula |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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 (Mrázek) 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. |
format |
Article in Journal/Newspaper |
author |
Gibson, John A.E. Zale, Rolf |
author_facet |
Gibson, John A.E. Zale, Rolf |
author_sort |
Gibson, John A.E. |
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 |
publishDate |
2006 |
url |
http://dx.doi.org/10.1191/0959683606hl959rp http://journals.sagepub.com/doi/pdf/10.1191/0959683606hl959rp |
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_source |
The Holocene volume 16, issue 5, page 625-634 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
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 |
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1766279941624692736 |