Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change
Post-glacial Ace Lake (Vestfold Hills, Antarctica), which was initially a freshwater lake and then an open marine system, is currently a meromictic basin with anoxic, sulfidic and methane-saturated bottom waters. Lipid and 16S ribosomal RNA gene stratigraphy of up to 10,400-year-old sediment core sa...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2004
|
Subjects: | |
Online Access: | https://dspace.library.uu.nl/handle/1874/4468 |
id |
ftunivutrecht:oai:dspace.library.uu.nl:1874/4468 |
---|---|
record_format |
openpolar |
spelling |
ftunivutrecht:oai:dspace.library.uu.nl:1874/4468 2023-07-23T04:13:56+02:00 Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change Sinninghe Damsté, J.S. Coolen, M.J.L. Hopmans, E.C. Rijpstra, W.I.C. Muyzer, G. Schouten, S. Volkman, J.K. 2004 text/plain https://dspace.library.uu.nl/handle/1874/4468 en eng 0146-6380 https://dspace.library.uu.nl/handle/1874/4468 info:eu-repo/semantics/ClosedAccess Aardwetenschappen Article 2004 ftunivutrecht 2023-07-01T22:49:58Z Post-glacial Ace Lake (Vestfold Hills, Antarctica), which was initially a freshwater lake and then an open marine system, is currently a meromictic basin with anoxic, sulfidic and methane-saturated bottom waters. Lipid and 16S ribosomal RNA gene stratigraphy of up to 10,400-year-old sediment core samples from the lake revealed that these environmentally induced chemical and physical changes caused clear shifts in the species composition of archaea and aerobic methanotrophic bacteria. The combined presence of lipids specific for methanogenic archaea and molecular remains of aerobic methanotrophic bacteria (13C-depleted Ä8(14)-sterols and 16S rRNA genes) revealed that an active methane cycle occurred in Ace Lake during the last 3000 calendar years and that the extant methanotrophs were most likely introduced when it became a marine inlet (9400 y BP); rDNA sequences of known methanogens were only recovered from the oldest sediments deposited during the freshwater phase. The latter sequences showed 100% sequence similarity with Methanosarcinales species from freshwater environments and were the source of sn-2- and sn3-hydroxyarchaeols. Archaeal phylotypes related to uncultivated Archaea associated with various marine environments were recovered from the present-day anoxic water column and sediments deposited during the meromictic and marine period. Article in Journal/Newspaper Antarc* Antarctica Utrecht University Repository Ace Lake ENVELOPE(78.188,78.188,-68.472,-68.472) Vestfold Vestfold Hills |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Aardwetenschappen |
spellingShingle |
Aardwetenschappen Sinninghe Damsté, J.S. Coolen, M.J.L. Hopmans, E.C. Rijpstra, W.I.C. Muyzer, G. Schouten, S. Volkman, J.K. Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
topic_facet |
Aardwetenschappen |
description |
Post-glacial Ace Lake (Vestfold Hills, Antarctica), which was initially a freshwater lake and then an open marine system, is currently a meromictic basin with anoxic, sulfidic and methane-saturated bottom waters. Lipid and 16S ribosomal RNA gene stratigraphy of up to 10,400-year-old sediment core samples from the lake revealed that these environmentally induced chemical and physical changes caused clear shifts in the species composition of archaea and aerobic methanotrophic bacteria. The combined presence of lipids specific for methanogenic archaea and molecular remains of aerobic methanotrophic bacteria (13C-depleted Ä8(14)-sterols and 16S rRNA genes) revealed that an active methane cycle occurred in Ace Lake during the last 3000 calendar years and that the extant methanotrophs were most likely introduced when it became a marine inlet (9400 y BP); rDNA sequences of known methanogens were only recovered from the oldest sediments deposited during the freshwater phase. The latter sequences showed 100% sequence similarity with Methanosarcinales species from freshwater environments and were the source of sn-2- and sn3-hydroxyarchaeols. Archaeal phylotypes related to uncultivated Archaea associated with various marine environments were recovered from the present-day anoxic water column and sediments deposited during the meromictic and marine period. |
format |
Article in Journal/Newspaper |
author |
Sinninghe Damsté, J.S. Coolen, M.J.L. Hopmans, E.C. Rijpstra, W.I.C. Muyzer, G. Schouten, S. Volkman, J.K. |
author_facet |
Sinninghe Damsté, J.S. Coolen, M.J.L. Hopmans, E.C. Rijpstra, W.I.C. Muyzer, G. Schouten, S. Volkman, J.K. |
author_sort |
Sinninghe Damsté, J.S. |
title |
Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
title_short |
Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
title_full |
Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
title_fullStr |
Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
title_full_unstemmed |
Evolution of the methane cycle in Ace Lake (Antarctica) during the Holocene : Response of methanogens and methanotrophs to environmental change |
title_sort |
evolution of the methane cycle in ace lake (antarctica) during the holocene : response of methanogens and methanotrophs to environmental change |
publishDate |
2004 |
url |
https://dspace.library.uu.nl/handle/1874/4468 |
long_lat |
ENVELOPE(78.188,78.188,-68.472,-68.472) |
geographic |
Ace Lake Vestfold Vestfold Hills |
geographic_facet |
Ace Lake Vestfold Vestfold Hills |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
0146-6380 https://dspace.library.uu.nl/handle/1874/4468 |
op_rights |
info:eu-repo/semantics/ClosedAccess |
_version_ |
1772182194150703104 |