Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra
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 s...
Published in: | Biogeochemistry |
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2015
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Online Access: | https://curis.ku.dk/portal/da/publications/deeper-snow-alters-soil-nutrient-availability-and-leaf-nutrient-status-in-high-arctic-tundra(4bd9785c-6576-4e0c-806e-28c853adc0bc).html https://doi.org/10.1007/s10533-015-0082-7 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/4bd9785c-6576-4e0c-806e-28c853adc0bc 2023-12-03T10:14:56+01:00 Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra Semenchuk, Philipp R. Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Michelsen, Anders Cooper, Elisabeth J. 2015 https://curis.ku.dk/portal/da/publications/deeper-snow-alters-soil-nutrient-availability-and-leaf-nutrient-status-in-high-arctic-tundra(4bd9785c-6576-4e0c-806e-28c853adc0bc).html https://doi.org/10.1007/s10533-015-0082-7 eng eng info:eu-repo/semantics/closedAccess Semenchuk , P R , Elberling , B , Amtorp , C , Winkler , J , Rumpf , S , Michelsen , A & Cooper , E J 2015 , ' Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra ' , Biogeochemistry , vol. 124 , no. 1 , pp. 81-94 . https://doi.org/10.1007/s10533-015-0082-7 Winter processes Mineralization Arctic Svalbard Plant growth article 2015 ftcopenhagenunip https://doi.org/10.1007/s10533-015-0082-7 2023-11-09T00:00:30Z 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, delta N-15 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 delta N-15 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 Arctic Climate change Salix polaris Svalbard Tundra University of Copenhagen: Research Arctic Svalbard Biogeochemistry 124 1-3 81 94 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Winter processes Mineralization Arctic Svalbard Plant growth |
spellingShingle |
Winter processes Mineralization Arctic Svalbard Plant growth Semenchuk, Philipp R. Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine 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 |
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, delta N-15 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 delta N-15 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 R. Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Michelsen, Anders Cooper, Elisabeth J. |
author_facet |
Semenchuk, Philipp R. Elberling, Bo Amtorp, Cecilie Winkler, Judith Rumpf, Sabine Michelsen, Anders Cooper, Elisabeth J. |
author_sort |
Semenchuk, Philipp R. |
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 |
publishDate |
2015 |
url |
https://curis.ku.dk/portal/da/publications/deeper-snow-alters-soil-nutrient-availability-and-leaf-nutrient-status-in-high-arctic-tundra(4bd9785c-6576-4e0c-806e-28c853adc0bc).html https://doi.org/10.1007/s10533-015-0082-7 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Climate change Salix polaris Svalbard Tundra |
genre_facet |
Arctic Arctic Climate change Salix polaris Svalbard Tundra |
op_source |
Semenchuk , P R , Elberling , B , Amtorp , C , Winkler , J , Rumpf , S , Michelsen , A & Cooper , E J 2015 , ' Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra ' , Biogeochemistry , vol. 124 , no. 1 , pp. 81-94 . https://doi.org/10.1007/s10533-015-0082-7 |
op_rights |
info:eu-repo/semantics/closedAccess |
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_ |
1784261974080618496 |