Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient
The unusually harsh environmental conditions of terrestrial Antarctic habitats result in ecosystems with simplified trophic structures, where microbial processes are especially dominant as drivers of soil-borne nutrient cycling. We examined soil-borne Antarctic communities (bacteria, fungi and nemat...
Published in: | FEMS Microbiology Ecology |
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ftknawnlpublic:oai:pure.knaw.nl:publications/e25684bd-e29a-43ba-ae5d-d642840c56b4 2024-09-09T19:08:27+00:00 Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient Yergeau, E. Bokhorst, S.F. Huiskes, A.H.L. Boschker, H.T.S. Aerts, R.A.M. Kowalchuk, G.A. 2007 https://pure.knaw.nl/portal/en/publications/e25684bd-e29a-43ba-ae5d-d642840c56b4 https://doi.org/10.1111/j.1574-6941.2006.00200.x https://hdl.handle.net/20.500.11755/e25684bd-e29a-43ba-ae5d-d642840c56b4 eng eng https://pure.knaw.nl/portal/en/publications/e25684bd-e29a-43ba-ae5d-d642840c56b4 info:eu-repo/semantics/closedAccess Yergeau , E , Bokhorst , S F , Huiskes , A H L , Boschker , H T S , Aerts , R A M & Kowalchuk , G A 2007 , ' Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient ' , FEMS Microbiology Ecology , vol. 59 , no. 2 , pp. 436-451 . https://doi.org/10.1111/j.1574-6941.2006.00200.x article 2007 ftknawnlpublic https://doi.org/10.1111/j.1574-6941.2006.00200.x20.500.11755/e25684bd-e29a-43ba-ae5d-d642840c56b4 2024-07-29T23:40:18Z The unusually harsh environmental conditions of terrestrial Antarctic habitats result in ecosystems with simplified trophic structures, where microbial processes are especially dominant as drivers of soil-borne nutrient cycling. We examined soil-borne Antarctic communities (bacteria, fungi and nematodes) at five locations along a southern latitudinal gradient from the Falkland Islands (51°S) to the base of the Antarctic Peninsula (72°S), and compared principally vegetated vs. fell-field locations at three of these sites. Results of molecular (denaturing gradient gel electrophoresis, real-time PCR), biochemical (ergosterol, phospholipid fatty acids) and traditional microbiological (temperature- and medium-related CFU) analyses were related to key soil and environmental properties. Microbial abundance generally showed a significant positive relationship with vegetation and vegetation-associated soil factors (e.g. water content, organic C, total N). Microbial community structure was mainly related to latitude or location and latitude-dependent factors (e.g. mean temperature, NO3, pH). Furthermore, strong interactions between vegetation cover and location were observed, with the effects of vegetation cover being most pronounced in more extreme sites. These results provide insight into the main drivers of microbial community size and structure across a range of terrestrial Antarctic and sub-Antarctic habitats, potentially serving as a useful baseline to study the impact of predicted global warming on these unique and pristine ecosystems. [KEYWORDS: Antarctica PCR-DGGE real-time PCR bacterial communities fungal communities nematodes communities] The unusually harsh environmental conditions of terrestrial Antarctic habitats result in ecosystems with simplified trophic structures, where microbial processes are especially dominant as drivers of soil-borne nutrient cycling. We examined soil-borne Antarctic communities (bacteria, fungi and nematodes) at five locations along a southern latitudinal gradient from ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Royal Netherlands Academy of Arts and Sciences Research Portal (KNAW) Antarctic Antarctic Peninsula The Antarctic FEMS Microbiology Ecology 59 2 436 451 |
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Open Polar |
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Royal Netherlands Academy of Arts and Sciences Research Portal (KNAW) |
op_collection_id |
ftknawnlpublic |
language |
English |
description |
The unusually harsh environmental conditions of terrestrial Antarctic habitats result in ecosystems with simplified trophic structures, where microbial processes are especially dominant as drivers of soil-borne nutrient cycling. We examined soil-borne Antarctic communities (bacteria, fungi and nematodes) at five locations along a southern latitudinal gradient from the Falkland Islands (51°S) to the base of the Antarctic Peninsula (72°S), and compared principally vegetated vs. fell-field locations at three of these sites. Results of molecular (denaturing gradient gel electrophoresis, real-time PCR), biochemical (ergosterol, phospholipid fatty acids) and traditional microbiological (temperature- and medium-related CFU) analyses were related to key soil and environmental properties. Microbial abundance generally showed a significant positive relationship with vegetation and vegetation-associated soil factors (e.g. water content, organic C, total N). Microbial community structure was mainly related to latitude or location and latitude-dependent factors (e.g. mean temperature, NO3, pH). Furthermore, strong interactions between vegetation cover and location were observed, with the effects of vegetation cover being most pronounced in more extreme sites. These results provide insight into the main drivers of microbial community size and structure across a range of terrestrial Antarctic and sub-Antarctic habitats, potentially serving as a useful baseline to study the impact of predicted global warming on these unique and pristine ecosystems. [KEYWORDS: Antarctica PCR-DGGE real-time PCR bacterial communities fungal communities nematodes communities] The unusually harsh environmental conditions of terrestrial Antarctic habitats result in ecosystems with simplified trophic structures, where microbial processes are especially dominant as drivers of soil-borne nutrient cycling. We examined soil-borne Antarctic communities (bacteria, fungi and nematodes) at five locations along a southern latitudinal gradient from ... |
format |
Article in Journal/Newspaper |
author |
Yergeau, E. Bokhorst, S.F. Huiskes, A.H.L. Boschker, H.T.S. Aerts, R.A.M. Kowalchuk, G.A. |
spellingShingle |
Yergeau, E. Bokhorst, S.F. Huiskes, A.H.L. Boschker, H.T.S. Aerts, R.A.M. Kowalchuk, G.A. Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
author_facet |
Yergeau, E. Bokhorst, S.F. Huiskes, A.H.L. Boschker, H.T.S. Aerts, R.A.M. Kowalchuk, G.A. |
author_sort |
Yergeau, E. |
title |
Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
title_short |
Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
title_full |
Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
title_fullStr |
Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
title_full_unstemmed |
Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient |
title_sort |
size and structure of bacterial, fungal and nematode communities along an antarctic environmental gradient |
publishDate |
2007 |
url |
https://pure.knaw.nl/portal/en/publications/e25684bd-e29a-43ba-ae5d-d642840c56b4 https://doi.org/10.1111/j.1574-6941.2006.00200.x https://hdl.handle.net/20.500.11755/e25684bd-e29a-43ba-ae5d-d642840c56b4 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Yergeau , E , Bokhorst , S F , Huiskes , A H L , Boschker , H T S , Aerts , R A M & Kowalchuk , G A 2007 , ' Size and structure of bacterial, fungal and nematode communities along an Antarctic environmental gradient ' , FEMS Microbiology Ecology , vol. 59 , no. 2 , pp. 436-451 . https://doi.org/10.1111/j.1574-6941.2006.00200.x |
op_relation |
https://pure.knaw.nl/portal/en/publications/e25684bd-e29a-43ba-ae5d-d642840c56b4 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/j.1574-6941.2006.00200.x20.500.11755/e25684bd-e29a-43ba-ae5d-d642840c56b4 |
container_title |
FEMS Microbiology Ecology |
container_volume |
59 |
container_issue |
2 |
container_start_page |
436 |
op_container_end_page |
451 |
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1809822679882006528 |