Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra
Accepted manuscript version. The final publication is available at Springer via href=http://dx.doi.org/10.1007/s10533-015-0082-7 Nitrogen (N) mineralization, nutrient availability, and plant growth in the Arctic are often restricted by low temperatures. Predicted increases of cold-season temperature...
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Online Access: | https://hdl.handle.net/10037/8902 https://doi.org/10.1007/s10533-015-0082-7 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8902 2023-05-15T14:52:01+02:00 Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra Semenchuk, Philipp Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Bettina Michelsen, Anders Cooper, Elisabeth J. 2015-02-24 https://hdl.handle.net/10037/8902 https://doi.org/10.1007/s10533-015-0082-7 eng eng Springer Verlag Biogeochemistry 2015, 124(1-3):81-94 FRIDAID 1294951 doi:10.1007/s10533-015-0082-7 1573-515X https://hdl.handle.net/10037/8902 URN:NBN:no-uit_munin_8468 openAccess winter processes mineralization Arctic Svalbard plant growth Journal article Tidsskriftartikkel Peer reviewed 2015 ftunivtroemsoe https://doi.org/10.1007/s10533-015-0082-7 2021-06-25T17:54:40Z Accepted manuscript version. The final publication is available at Springer via href=http://dx.doi.org/10.1007/s10533-015-0082-7 Nitrogen (N) mineralization, nutrient availability, and plant growth in the Arctic are often restricted by low temperatures. Predicted increases of cold-season temperatures may be important for plant nutrient availability and growth, given that N mineralization is also taking place during the cold season. Changing nutrient availability may be reflected in plant N and chlorophyll content and lead to increased photosynthetic capacity, plant growth, and ultimately carbon (C) assimilation by plants. In this study, we increased snow depth and thereby cold-season soil temperatures in high Arctic Svalbard in two vegetation types spanning three moisture regimes. We measured growing-season availability of ammonium (NH4 +), nitrate (NO3 −), total dissolved organic carbon (DOC) and nitrogen (TON) in soil; C, N, δ15N and chlorophyll content in Salix polaris leaves; and leaf sizes of Salix, Bistorta vivipara, and Luzula arcuata at peak season. Nutrient availability was significantly higher with increased snow depth in the two mesic meadow vegetation types, but not in the drier heath vegetation. Nitrogen concentrations and δ15N values of Salix leaves were significantly higher in all vegetation types, but the leaf sizes were unchanged. Leaves of Bistorta and Luzula were significantly larger but only significantly so in one moist vegetation type. Increased N and chlorophyll concentrations in leaves indicate a potential for increased growth (C uptake), supported by large leaf sizes for some species. Responses to cold-season soil warming are vegetation type- and species-specific, with potentially stronger responses in moister vegetation types. This study therefore highlights the contrasting effect of snow in a tundra landscape and has important implications for projections of whole tundra responses to climate change. Article in Journal/Newspaper Arctic Climate change Salix polaris Svalbard Tundra University of Tromsø: Munin Open Research Archive Arctic Svalbard Biogeochemistry 124 1-3 81 94 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
winter processes mineralization Arctic Svalbard plant growth |
spellingShingle |
winter processes mineralization Arctic Svalbard plant growth Semenchuk, Philipp Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Bettina Michelsen, Anders Cooper, Elisabeth J. Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
topic_facet |
winter processes mineralization Arctic Svalbard plant growth |
description |
Accepted manuscript version. The final publication is available at Springer via href=http://dx.doi.org/10.1007/s10533-015-0082-7 Nitrogen (N) mineralization, nutrient availability, and plant growth in the Arctic are often restricted by low temperatures. Predicted increases of cold-season temperatures may be important for plant nutrient availability and growth, given that N mineralization is also taking place during the cold season. Changing nutrient availability may be reflected in plant N and chlorophyll content and lead to increased photosynthetic capacity, plant growth, and ultimately carbon (C) assimilation by plants. In this study, we increased snow depth and thereby cold-season soil temperatures in high Arctic Svalbard in two vegetation types spanning three moisture regimes. We measured growing-season availability of ammonium (NH4 +), nitrate (NO3 −), total dissolved organic carbon (DOC) and nitrogen (TON) in soil; C, N, δ15N and chlorophyll content in Salix polaris leaves; and leaf sizes of Salix, Bistorta vivipara, and Luzula arcuata at peak season. Nutrient availability was significantly higher with increased snow depth in the two mesic meadow vegetation types, but not in the drier heath vegetation. Nitrogen concentrations and δ15N values of Salix leaves were significantly higher in all vegetation types, but the leaf sizes were unchanged. Leaves of Bistorta and Luzula were significantly larger but only significantly so in one moist vegetation type. Increased N and chlorophyll concentrations in leaves indicate a potential for increased growth (C uptake), supported by large leaf sizes for some species. Responses to cold-season soil warming are vegetation type- and species-specific, with potentially stronger responses in moister vegetation types. This study therefore highlights the contrasting effect of snow in a tundra landscape and has important implications for projections of whole tundra responses to climate change. |
format |
Article in Journal/Newspaper |
author |
Semenchuk, Philipp Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Bettina Michelsen, Anders Cooper, Elisabeth J. |
author_facet |
Semenchuk, Philipp Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Bettina Michelsen, Anders Cooper, Elisabeth J. |
author_sort |
Semenchuk, Philipp |
title |
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
title_short |
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
title_full |
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
title_fullStr |
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
title_full_unstemmed |
Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra |
title_sort |
deeper snow alters soil nutrient availability and leaf nutrient status in high arctic tundra |
publisher |
Springer Verlag |
publishDate |
2015 |
url |
https://hdl.handle.net/10037/8902 https://doi.org/10.1007/s10533-015-0082-7 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Climate change Salix polaris Svalbard Tundra |
genre_facet |
Arctic Climate change Salix polaris Svalbard Tundra |
op_relation |
Biogeochemistry 2015, 124(1-3):81-94 FRIDAID 1294951 doi:10.1007/s10533-015-0082-7 1573-515X https://hdl.handle.net/10037/8902 URN:NBN:no-uit_munin_8468 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s10533-015-0082-7 |
container_title |
Biogeochemistry |
container_volume |
124 |
container_issue |
1-3 |
container_start_page |
81 |
op_container_end_page |
94 |
_version_ |
1766323146840866816 |