Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Climate change may alter nutrient cycling in Arctic soils and plants. Deeper snow during winter, as well as summer warming, could increase soil temperatures and thereby the availability of otherwise limiting nutrients such as nitrogen (N). We us...
Published in: | Soil Biology and Biochemistry |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hdl.handle.net/10037/17213 https://doi.org/10.1016/j.soilbio.2019.05.009 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17213 2023-05-15T14:25:11+02:00 Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra Mörsdorf, Martin Alfons Baggesen, Nanna Schrøder Yoccoz, Nigel Gilles Michelsen, Anders Elberling, Bo Ambus, Per Lennart Cooper, Elisabeth J. 2019-05-13 https://hdl.handle.net/10037/17213 https://doi.org/10.1016/j.soilbio.2019.05.009 eng eng Elsevier Soil Biology and Biochemistry Andre: Danish National Research Foundation DNRF100 Andre: Norwegian Centre for International Cooperation in Education Framsenteret: SnoEcoFen Norges forskningsråd: 230970 info:eu-repo/grantAgreement/RCN/FRIMEDBIO/230970/Norway/The effect of snow depth and snow melt timing on arctic terrestrial ecosystems.// Mörsdorf MA, Baggesen NS, Yoccoz NG, Michelsen A, Elberling B, Ambus PL, Cooper E.J. Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra. Soil Biology and Biochemistry. 2019;135:222-234 FRIDAID 1707540 doi:10.1016/j.soilbio.2019.05.009 0038-0717 1879-3428 https://hdl.handle.net/10037/17213 openAccess Copyright 2019 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2019 ftunivtroemsoe https://doi.org/10.1016/j.soilbio.2019.05.009 2021-06-25T17:57:09Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. Climate change may alter nutrient cycling in Arctic soils and plants. Deeper snow during winter, as well as summer warming, could increase soil temperatures and thereby the availability of otherwise limiting nutrients such as nitrogen (N). We used fences to manipulate snow depths in Svalbard for 9 consecutive years, resulting in three snow regimes: 1) Ambient with a maximum snow depth of 35 cm, 2) Medium with a maximum of 100 cm and 3) Deep with a maximum of 150 cm. We increased temperatures during one growing season using Open Top Chambers (OTCs), and sampled soil and vascular plant leaves throughout summer 2015. Labile soil N, especially inorganic N, during the growing season was significantly greater in Deep than Ambient suggesting N supply in excess of plant and microbial demand. However, we found no effect of Medium snow depth or short-term summer temperature increase on soil N, presumably due to minor impacts on soil temperature and moisture. The temporal patterns of labile soil N were similar in all snow regimes with high concentrations of organic N immediately after snowmelt, thereafter dropping towards peak growing season. Concentrations of all N forms increased at the end of summer. Vascular plants had high N at the start of growing season, decreasing as summer progressed, and leaf N concentrations were highest in Deep , corresponding to the higher soil N availability. Short-term summer warming was associated with lower leaf N concentrations, presumably due to growth dilution. Deeper snow enhanced labile soil organic and inorganic N pools and plant N uptake. Leaf 15 N natural abundance levels (δ 15 N) in Deep indicated a higher degree of utilization of inorganic than organic N, which was especially pronounced in mycorrhizal plants. Article in Journal/Newspaper Arctic Arctic Climate change Svalbard Tundra University of Tromsø: Munin Open Research Archive Arctic Svalbard Soil Biology and Biochemistry 135 222 234 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Mörsdorf, Martin Alfons Baggesen, Nanna Schrøder Yoccoz, Nigel Gilles Michelsen, Anders Elberling, Bo Ambus, Per Lennart Cooper, Elisabeth J. Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Climate change may alter nutrient cycling in Arctic soils and plants. Deeper snow during winter, as well as summer warming, could increase soil temperatures and thereby the availability of otherwise limiting nutrients such as nitrogen (N). We used fences to manipulate snow depths in Svalbard for 9 consecutive years, resulting in three snow regimes: 1) Ambient with a maximum snow depth of 35 cm, 2) Medium with a maximum of 100 cm and 3) Deep with a maximum of 150 cm. We increased temperatures during one growing season using Open Top Chambers (OTCs), and sampled soil and vascular plant leaves throughout summer 2015. Labile soil N, especially inorganic N, during the growing season was significantly greater in Deep than Ambient suggesting N supply in excess of plant and microbial demand. However, we found no effect of Medium snow depth or short-term summer temperature increase on soil N, presumably due to minor impacts on soil temperature and moisture. The temporal patterns of labile soil N were similar in all snow regimes with high concentrations of organic N immediately after snowmelt, thereafter dropping towards peak growing season. Concentrations of all N forms increased at the end of summer. Vascular plants had high N at the start of growing season, decreasing as summer progressed, and leaf N concentrations were highest in Deep , corresponding to the higher soil N availability. Short-term summer warming was associated with lower leaf N concentrations, presumably due to growth dilution. Deeper snow enhanced labile soil organic and inorganic N pools and plant N uptake. Leaf 15 N natural abundance levels (δ 15 N) in Deep indicated a higher degree of utilization of inorganic than organic N, which was especially pronounced in mycorrhizal plants. |
format |
Article in Journal/Newspaper |
author |
Mörsdorf, Martin Alfons Baggesen, Nanna Schrøder Yoccoz, Nigel Gilles Michelsen, Anders Elberling, Bo Ambus, Per Lennart Cooper, Elisabeth J. |
author_facet |
Mörsdorf, Martin Alfons Baggesen, Nanna Schrøder Yoccoz, Nigel Gilles Michelsen, Anders Elberling, Bo Ambus, Per Lennart Cooper, Elisabeth J. |
author_sort |
Mörsdorf, Martin Alfons |
title |
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
title_short |
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
title_full |
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
title_fullStr |
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
title_full_unstemmed |
Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra |
title_sort |
deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in high arctic tundra |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17213 https://doi.org/10.1016/j.soilbio.2019.05.009 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Climate change Svalbard Tundra |
genre_facet |
Arctic Arctic Climate change Svalbard Tundra |
op_relation |
Soil Biology and Biochemistry Andre: Danish National Research Foundation DNRF100 Andre: Norwegian Centre for International Cooperation in Education Framsenteret: SnoEcoFen Norges forskningsråd: 230970 info:eu-repo/grantAgreement/RCN/FRIMEDBIO/230970/Norway/The effect of snow depth and snow melt timing on arctic terrestrial ecosystems.// Mörsdorf MA, Baggesen NS, Yoccoz NG, Michelsen A, Elberling B, Ambus PL, Cooper E.J. Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra. Soil Biology and Biochemistry. 2019;135:222-234 FRIDAID 1707540 doi:10.1016/j.soilbio.2019.05.009 0038-0717 1879-3428 https://hdl.handle.net/10037/17213 |
op_rights |
openAccess Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.1016/j.soilbio.2019.05.009 |
container_title |
Soil Biology and Biochemistry |
container_volume |
135 |
container_start_page |
222 |
op_container_end_page |
234 |
_version_ |
1766297610937696256 |