Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land
Abstract Four pedons on each of four drift sheets in the Lake Wellman area of the Darwin Mountains were sampled for chemical and microbial analyses. The four drifts, Hatherton, Britannia, Danum, and Isca, ranged from early Holocene (10 ka) to mid-Quaternary ( c. 900 ka). The soil properties of weath...
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crcambridgeupr:10.1017/s0954102011000873 2024-09-09T19:12:37+00:00 Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land Aislabie, Jackie Bockheim, James Mcleod, Malcolm Hunter, David Stevenson, Bryan Barker, Gary M. 2011 http://dx.doi.org/10.1017/s0954102011000873 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000873 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 24, issue 2, page 154-164 ISSN 0954-1020 1365-2079 journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0954102011000873 2024-06-19T04:04:30Z Abstract Four pedons on each of four drift sheets in the Lake Wellman area of the Darwin Mountains were sampled for chemical and microbial analyses. The four drifts, Hatherton, Britannia, Danum, and Isca, ranged from early Holocene (10 ka) to mid-Quaternary ( c. 900 ka). The soil properties of weathering stage, salt stage, and depths of staining, visible salts, ghosts, and coherence increase with drift age. The landforms contain primarily high-centred polygons with windblown snow in the troughs. The soils are dominantly complexes of Typic Haplorthels and Typic Haploturbels. The soils were dry and alkaline with low levels of organic carbon, nitrogen and phosphorus. Electrical conductivity was high accompanied by high levels of water soluble anions and cations (especially calcium and sulphate in older soils). Soil microbial biomass, measured as phospholipid fatty acids, and numbers of culturable heterotrophic microbes, were low, with highest levels detected in less developed soils from the Hatherton drift. The microbial community structure of the Hatherton soil also differed from that of the Britannia, Danum and Isca soils. Ordination revealed the soil microbial community structure was influenced by soil development and organic carbon. Article in Journal/Newspaper Antarctic Science Victoria Land Cambridge University Press Britannia ENVELOPE(-62.681,-62.681,-64.718,-64.718) Darwin Mountains ENVELOPE(156.250,156.250,-79.850,-79.850) Victoria Land Wellman ENVELOPE(-61.400,-61.400,-64.483,-64.483) Antarctic Science 24 2 154 164 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Four pedons on each of four drift sheets in the Lake Wellman area of the Darwin Mountains were sampled for chemical and microbial analyses. The four drifts, Hatherton, Britannia, Danum, and Isca, ranged from early Holocene (10 ka) to mid-Quaternary ( c. 900 ka). The soil properties of weathering stage, salt stage, and depths of staining, visible salts, ghosts, and coherence increase with drift age. The landforms contain primarily high-centred polygons with windblown snow in the troughs. The soils are dominantly complexes of Typic Haplorthels and Typic Haploturbels. The soils were dry and alkaline with low levels of organic carbon, nitrogen and phosphorus. Electrical conductivity was high accompanied by high levels of water soluble anions and cations (especially calcium and sulphate in older soils). Soil microbial biomass, measured as phospholipid fatty acids, and numbers of culturable heterotrophic microbes, were low, with highest levels detected in less developed soils from the Hatherton drift. The microbial community structure of the Hatherton soil also differed from that of the Britannia, Danum and Isca soils. Ordination revealed the soil microbial community structure was influenced by soil development and organic carbon. |
format |
Article in Journal/Newspaper |
author |
Aislabie, Jackie Bockheim, James Mcleod, Malcolm Hunter, David Stevenson, Bryan Barker, Gary M. |
spellingShingle |
Aislabie, Jackie Bockheim, James Mcleod, Malcolm Hunter, David Stevenson, Bryan Barker, Gary M. Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
author_facet |
Aislabie, Jackie Bockheim, James Mcleod, Malcolm Hunter, David Stevenson, Bryan Barker, Gary M. |
author_sort |
Aislabie, Jackie |
title |
Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
title_short |
Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
title_full |
Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
title_fullStr |
Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
title_full_unstemmed |
Microbial biomass and community structure changes along a soil development chronosequence near Lake Wellman, southern Victoria Land |
title_sort |
microbial biomass and community structure changes along a soil development chronosequence near lake wellman, southern victoria land |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0954102011000873 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000873 |
long_lat |
ENVELOPE(-62.681,-62.681,-64.718,-64.718) ENVELOPE(156.250,156.250,-79.850,-79.850) ENVELOPE(-61.400,-61.400,-64.483,-64.483) |
geographic |
Britannia Darwin Mountains Victoria Land Wellman |
geographic_facet |
Britannia Darwin Mountains Victoria Land Wellman |
genre |
Antarctic Science Victoria Land |
genre_facet |
Antarctic Science Victoria Land |
op_source |
Antarctic Science volume 24, issue 2, page 154-164 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102011000873 |
container_title |
Antarctic Science |
container_volume |
24 |
container_issue |
2 |
container_start_page |
154 |
op_container_end_page |
164 |
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1809753329713020928 |