Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils
Warmer winters in Arctic regions may melt insulating snow cover and subject soils to more freeze– thaw cycles. The effect of freeze–thaw cycles on the microbial use of low molecular weight, dissolved organic carbon (LMW-DOC) is poorly understood. In this study, soils from the Arctic heath tundra, Ar...
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Online Access: | https://hdl.handle.net/10037/24917 https://doi.org/10.1007/s00300-016-1914-1 |
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ftunivtroemsoe:oai:munin.uit.no:10037/24917 2023-05-15T14:25:30+02:00 Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils Foster, A. Jones, Davey L. Cooper, Elisabeth J. Roberts, Paula 2016-03-11 https://hdl.handle.net/10037/24917 https://doi.org/10.1007/s00300-016-1914-1 eng eng Springer Polar Biology Foster A, Jones, Cooper E.J., Roberts. Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils. Polar Biology. 2016;39(12):2387-2401 FRIDAID 1418833 doi:10.1007/s00300-016-1914-1 0722-4060 1432-2056 https://hdl.handle.net/10037/24917 openAccess Copyright 2016 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2016 ftunivtroemsoe https://doi.org/10.1007/s00300-016-1914-1 2022-04-27T22:58:30Z Warmer winters in Arctic regions may melt insulating snow cover and subject soils to more freeze– thaw cycles. The effect of freeze–thaw cycles on the microbial use of low molecular weight, dissolved organic carbon (LMW-DOC) is poorly understood. In this study, soils from the Arctic heath tundra, Arctic meadow tundra and a temperate grassland were frozen to -7.5 C and thawed once and three times. Subsequently, the mineralisation of 3 LMW-DOC substrates types (sugars, amino acids and peptides) was measured over an 8-day period and compared to controls which had not been frozen. This allowed the comparison of freeze–thaw effects between Arctic and temperate soil and between different substrates. The results showed that freeze–thaw cycles had no significant effect on C mineralisation in the Arctic tundra soils. In contrast, for the same intensity freeze–thaw cycles, a significant effect on C mineralisation was observed for all substrate types in the temperate soil although the response was substrate specific. Peptide and amino acid mineralisation were similarly affected by FT, whilst glucose had a different response. Further work is required to fully understand microbial use of LMW-DOC after freeze–thaw, yet these results suggest that relatively short freeze–thaw cycles have little effect on microbial use of LMW-DOC in Arctic tundra soils after thaw. Article in Journal/Newspaper Arctic Arctic Polar Biology Tundra University of Tromsø: Munin Open Research Archive Arctic Polar Biology 39 12 2387 2401 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Warmer winters in Arctic regions may melt insulating snow cover and subject soils to more freeze– thaw cycles. The effect of freeze–thaw cycles on the microbial use of low molecular weight, dissolved organic carbon (LMW-DOC) is poorly understood. In this study, soils from the Arctic heath tundra, Arctic meadow tundra and a temperate grassland were frozen to -7.5 C and thawed once and three times. Subsequently, the mineralisation of 3 LMW-DOC substrates types (sugars, amino acids and peptides) was measured over an 8-day period and compared to controls which had not been frozen. This allowed the comparison of freeze–thaw effects between Arctic and temperate soil and between different substrates. The results showed that freeze–thaw cycles had no significant effect on C mineralisation in the Arctic tundra soils. In contrast, for the same intensity freeze–thaw cycles, a significant effect on C mineralisation was observed for all substrate types in the temperate soil although the response was substrate specific. Peptide and amino acid mineralisation were similarly affected by FT, whilst glucose had a different response. Further work is required to fully understand microbial use of LMW-DOC after freeze–thaw, yet these results suggest that relatively short freeze–thaw cycles have little effect on microbial use of LMW-DOC in Arctic tundra soils after thaw. |
format |
Article in Journal/Newspaper |
author |
Foster, A. Jones, Davey L. Cooper, Elisabeth J. Roberts, Paula |
spellingShingle |
Foster, A. Jones, Davey L. Cooper, Elisabeth J. Roberts, Paula Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
author_facet |
Foster, A. Jones, Davey L. Cooper, Elisabeth J. Roberts, Paula |
author_sort |
Foster, A. |
title |
Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
title_short |
Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
title_full |
Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
title_fullStr |
Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
title_full_unstemmed |
Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils |
title_sort |
freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in arctic soils |
publisher |
Springer |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/24917 https://doi.org/10.1007/s00300-016-1914-1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Polar Biology Tundra |
genre_facet |
Arctic Arctic Polar Biology Tundra |
op_relation |
Polar Biology Foster A, Jones, Cooper E.J., Roberts. Freeze–thaw cycles have minimal effect on the mineralisation of low molecular weight, dissolved organic carbon in Arctic soils. Polar Biology. 2016;39(12):2387-2401 FRIDAID 1418833 doi:10.1007/s00300-016-1914-1 0722-4060 1432-2056 https://hdl.handle.net/10037/24917 |
op_rights |
openAccess Copyright 2016 The Author(s) |
op_doi |
https://doi.org/10.1007/s00300-016-1914-1 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
12 |
container_start_page |
2387 |
op_container_end_page |
2401 |
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1766297884526903296 |