Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds
The results are presented of a detailed plant macrofossil analysis of a( 14 C dated Holocene organic sequence from a sub-Antarctic island, South Georgia. In the peat infilling of a rock basin 31 bryophyte species and many of the principal species of the present-day angiosperm flora, associated with...
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Language: | English |
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Online Access: | http://dx.doi.org/10.1191/0959683604hl714rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl714rp |
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crsagepubl:10.1191/0959683604hl714rp 2024-09-09T19:05:02+00:00 Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds Van der Putten, Nathalie Stieperaere, Herman Verbruggen, Cyriel Ochyra, Ryszard 2004 http://dx.doi.org/10.1191/0959683604hl714rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl714rp en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 14, issue 3, page 382-392 ISSN 0959-6836 1477-0911 journal-article 2004 crsagepubl https://doi.org/10.1191/0959683604hl714rp 2024-06-24T04:32:23Z The results are presented of a detailed plant macrofossil analysis of a( 14 C dated Holocene organic sequence from a sub-Antarctic island, South Georgia. In the peat infilling of a rock basin 31 bryophyte species and many of the principal species of the present-day angiosperm flora, associated with bog communities, have been identified. The zonation of the bryophytes and the seeds and fruits shows a striking correspondence with the sediment stratigraphy, and indicates five ecological phases. The first four reflect a succession from a minerotrophic shallow pool to an ombrotrophic W arnstorfia-Polytrichum bog. After the deposition of a greyish-brown layer, c. 2200 14 C years BP, a wet Deschampsia-Warnstorfia-Sanionia-Rostkovia bog came into existence, which is still present today. The ecological phases are radiocarbon dated. They can be interpreted in terms of climate development during the Holocene. Climate ameliorated rapidly at about 10 000 14 C years BP followed by a drier period. Around 7000 14C years BP the climate became wetter and the following c. 2500years probably represent the climatic optimum. Between 4500 and 2600 14 C years BP, drier conditions prevailed at the study site. The most striking change occurred at 2600 14 C years BP when a marked change in vegetation and ecology indicates much wetter conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctica SAGE Publications Antarctic The Holocene 14 3 382 392 |
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SAGE Publications |
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language |
English |
description |
The results are presented of a detailed plant macrofossil analysis of a( 14 C dated Holocene organic sequence from a sub-Antarctic island, South Georgia. In the peat infilling of a rock basin 31 bryophyte species and many of the principal species of the present-day angiosperm flora, associated with bog communities, have been identified. The zonation of the bryophytes and the seeds and fruits shows a striking correspondence with the sediment stratigraphy, and indicates five ecological phases. The first four reflect a succession from a minerotrophic shallow pool to an ombrotrophic W arnstorfia-Polytrichum bog. After the deposition of a greyish-brown layer, c. 2200 14 C years BP, a wet Deschampsia-Warnstorfia-Sanionia-Rostkovia bog came into existence, which is still present today. The ecological phases are radiocarbon dated. They can be interpreted in terms of climate development during the Holocene. Climate ameliorated rapidly at about 10 000 14 C years BP followed by a drier period. Around 7000 14C years BP the climate became wetter and the following c. 2500years probably represent the climatic optimum. Between 4500 and 2600 14 C years BP, drier conditions prevailed at the study site. The most striking change occurred at 2600 14 C years BP when a marked change in vegetation and ecology indicates much wetter conditions. |
format |
Article in Journal/Newspaper |
author |
Van der Putten, Nathalie Stieperaere, Herman Verbruggen, Cyriel Ochyra, Ryszard |
spellingShingle |
Van der Putten, Nathalie Stieperaere, Herman Verbruggen, Cyriel Ochyra, Ryszard Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
author_facet |
Van der Putten, Nathalie Stieperaere, Herman Verbruggen, Cyriel Ochyra, Ryszard |
author_sort |
Van der Putten, Nathalie |
title |
Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
title_short |
Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
title_full |
Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
title_fullStr |
Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
title_full_unstemmed |
Holocene palaeoecology and climate history of South Georgia (sub-Antarctica) based on a macrofossil record of bryophytes and seeds |
title_sort |
holocene palaeoecology and climate history of south georgia (sub-antarctica) based on a macrofossil record of bryophytes and seeds |
publisher |
SAGE Publications |
publishDate |
2004 |
url |
http://dx.doi.org/10.1191/0959683604hl714rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl714rp |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
The Holocene volume 14, issue 3, page 382-392 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0959683604hl714rp |
container_title |
The Holocene |
container_volume |
14 |
container_issue |
3 |
container_start_page |
382 |
op_container_end_page |
392 |
_version_ |
1809819024845963264 |