Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region
James Ross Island (JRI) offers the exceptional opportunity to study microbial-driven pedogenesis without the influence of vascular plants or faunal activities (e.g., penguin rookeries). In this study, two soil profiles from JRI (one at Santa Martha Cove – SMC, and another at Brandy Bay – BB) were in...
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ftdoajarticles:oai:doaj.org/article:762e8bcd643f457fbc845e6680bd2c35 2023-05-15T14:01:46+02:00 Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region L. A. Meier P. Krauze I. Prater F. Horn C. E. G. R. Schaefer T. Scholten D. Wagner C. W. Mueller P. Kühn 2019-06-01T00:00:00Z https://doi.org/10.5194/bg-16-2481-2019 https://doaj.org/article/762e8bcd643f457fbc845e6680bd2c35 EN eng Copernicus Publications https://www.biogeosciences.net/16/2481/2019/bg-16-2481-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-2481-2019 1726-4170 1726-4189 https://doaj.org/article/762e8bcd643f457fbc845e6680bd2c35 Biogeosciences, Vol 16, Pp 2481-2499 (2019) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/bg-16-2481-2019 2023-01-08T01:29:08Z James Ross Island (JRI) offers the exceptional opportunity to study microbial-driven pedogenesis without the influence of vascular plants or faunal activities (e.g., penguin rookeries). In this study, two soil profiles from JRI (one at Santa Martha Cove – SMC, and another at Brandy Bay – BB) were investigated, in order to gain information about the initial state of soil formation and its interplay with prokaryotic activity, by combining pedological, geochemical and microbiological methods. The soil profiles are similar with respect to topographic position and parent material but are spatially separated by an orographic barrier and therefore represent windward and leeward locations towards the mainly southwesterly winds. These different positions result in differences in electric conductivity of the soils caused by additional input of bases by sea spray at the windward site and opposing trends in the depth functions of soil pH and electric conductivity. Both soils are classified as Cryosols, dominated by bacterial taxa such as Actinobacteria, Proteobacteria, Acidobacteria, Gemmatimonadetes and Chloroflexi. A shift in the dominant taxa was observed below 20 cm in both soils as well as an increased abundance of multiple operational taxonomic units (OTUs) related to potential chemolithoautotrophic Acidiferrobacteraceae. This shift is coupled by a change in microstructure. While single/pellicular grain microstructure (SMC) and platy microstructure (BB) are dominant above 20 cm, lenticular microstructure is dominant below 20 cm in both soils. The change in microstructure is caused by frequent freeze–thaw cycles and a relative high water content, and it goes along with a development of the pore spacing and is accompanied by a change in nutrient content. Multivariate statistics revealed the influence of soil parameters such as chloride, sulfate, calcium and organic carbon contents, grain size distribution and pedogenic oxide ratios on the overall microbial community structure and explained 49.9 % of its variation. The ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Ross Island Brandy Bay ENVELOPE(-58.000,-58.000,-63.700,-63.700) Biogeosciences 16 12 2481 2499 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 L. A. Meier P. Krauze I. Prater F. Horn C. E. G. R. Schaefer T. Scholten D. Wagner C. W. Mueller P. Kühn Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
James Ross Island (JRI) offers the exceptional opportunity to study microbial-driven pedogenesis without the influence of vascular plants or faunal activities (e.g., penguin rookeries). In this study, two soil profiles from JRI (one at Santa Martha Cove – SMC, and another at Brandy Bay – BB) were investigated, in order to gain information about the initial state of soil formation and its interplay with prokaryotic activity, by combining pedological, geochemical and microbiological methods. The soil profiles are similar with respect to topographic position and parent material but are spatially separated by an orographic barrier and therefore represent windward and leeward locations towards the mainly southwesterly winds. These different positions result in differences in electric conductivity of the soils caused by additional input of bases by sea spray at the windward site and opposing trends in the depth functions of soil pH and electric conductivity. Both soils are classified as Cryosols, dominated by bacterial taxa such as Actinobacteria, Proteobacteria, Acidobacteria, Gemmatimonadetes and Chloroflexi. A shift in the dominant taxa was observed below 20 cm in both soils as well as an increased abundance of multiple operational taxonomic units (OTUs) related to potential chemolithoautotrophic Acidiferrobacteraceae. This shift is coupled by a change in microstructure. While single/pellicular grain microstructure (SMC) and platy microstructure (BB) are dominant above 20 cm, lenticular microstructure is dominant below 20 cm in both soils. The change in microstructure is caused by frequent freeze–thaw cycles and a relative high water content, and it goes along with a development of the pore spacing and is accompanied by a change in nutrient content. Multivariate statistics revealed the influence of soil parameters such as chloride, sulfate, calcium and organic carbon contents, grain size distribution and pedogenic oxide ratios on the overall microbial community structure and explained 49.9 % of its variation. The ... |
format |
Article in Journal/Newspaper |
author |
L. A. Meier P. Krauze I. Prater F. Horn C. E. G. R. Schaefer T. Scholten D. Wagner C. W. Mueller P. Kühn |
author_facet |
L. A. Meier P. Krauze I. Prater F. Horn C. E. G. R. Schaefer T. Scholten D. Wagner C. W. Mueller P. Kühn |
author_sort |
L. A. Meier |
title |
Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
title_short |
Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
title_full |
Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
title_fullStr |
Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
title_full_unstemmed |
Pedogenic and microbial interrelation in initial soils under semiarid climate on James Ross Island, Antarctic Peninsula region |
title_sort |
pedogenic and microbial interrelation in initial soils under semiarid climate on james ross island, antarctic peninsula region |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-2481-2019 https://doaj.org/article/762e8bcd643f457fbc845e6680bd2c35 |
long_lat |
ENVELOPE(-58.000,-58.000,-63.700,-63.700) |
geographic |
Antarctic Antarctic Peninsula Ross Island Brandy Bay |
geographic_facet |
Antarctic Antarctic Peninsula Ross Island Brandy Bay |
genre |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
op_source |
Biogeosciences, Vol 16, Pp 2481-2499 (2019) |
op_relation |
https://www.biogeosciences.net/16/2481/2019/bg-16-2481-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-2481-2019 1726-4170 1726-4189 https://doaj.org/article/762e8bcd643f457fbc845e6680bd2c35 |
op_doi |
https://doi.org/10.5194/bg-16-2481-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
12 |
container_start_page |
2481 |
op_container_end_page |
2499 |
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1766271798203121664 |