Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra

Verfasser / Beitragende:
[Philipp Semenchuk, Bo Elberling, Cecilie Amtorp, Judith Winkler, Sabine Rumpf, Anders Michelsen, Elisabeth Cooper]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biogeochemistry, 124/1-3(2015-05-01), 81-94
Format:
Artikel (online)
ID: 605516499
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024 7 0 |a 10.1007/s10533-015-0082-7  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10533-015-0082-7 
245 0 0 |a Deeper snow alters soil nutrient availability and leaf nutrient status in high Arctic tundra  |h [Elektronische Daten]  |c [Philipp Semenchuk, Bo Elberling, Cecilie Amtorp, Judith Winkler, Sabine Rumpf, Anders Michelsen, Elisabeth Cooper] 
520 3 |a 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. 
540 |a Springer International Publishing Switzerland, 2015 
690 7 |a Winter processes  |2 nationallicence 
690 7 |a Mineralization  |2 nationallicence 
690 7 |a Arctic  |2 nationallicence 
690 7 |a Svalbard  |2 nationallicence 
690 7 |a Plant growth  |2 nationallicence 
700 1 |a Semenchuk  |D Philipp  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
700 1 |a Elberling  |D Bo  |u Department of Geosciences and Natural Resource Management, Center for Permafrost (CENPERM), University of Copenhagen, 1350, Copenhagen, Denmark  |4 aut 
700 1 |a Amtorp  |D Cecilie  |u University Center in Svalbard (UNIS), 9071, Longyearbyen, Norway  |4 aut 
700 1 |a Winkler  |D Judith  |u University Center in Svalbard (UNIS), 9071, Longyearbyen, Norway  |4 aut 
700 1 |a Rumpf  |D Sabine  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
700 1 |a Michelsen  |D Anders  |u Department of Geosciences and Natural Resource Management, Center for Permafrost (CENPERM), University of Copenhagen, 1350, Copenhagen, Denmark  |4 aut 
700 1 |a Cooper  |D Elisabeth  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
773 0 |t Biogeochemistry  |d Springer International Publishing  |g 124/1-3(2015-05-01), 81-94  |x 0168-2563  |q 124:1-3<81  |1 2015  |2 124  |o 10533 
856 4 0 |u https://doi.org/10.1007/s10533-015-0082-7  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10533-015-0082-7  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Semenchuk  |D Philipp  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Elberling  |D Bo  |u Department of Geosciences and Natural Resource Management, Center for Permafrost (CENPERM), University of Copenhagen, 1350, Copenhagen, Denmark  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Amtorp  |D Cecilie  |u University Center in Svalbard (UNIS), 9071, Longyearbyen, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Winkler  |D Judith  |u University Center in Svalbard (UNIS), 9071, Longyearbyen, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Rumpf  |D Sabine  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Michelsen  |D Anders  |u Department of Geosciences and Natural Resource Management, Center for Permafrost (CENPERM), University of Copenhagen, 1350, Copenhagen, Denmark  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cooper  |D Elisabeth  |u Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037, Tromsø, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biogeochemistry  |d Springer International Publishing  |g 124/1-3(2015-05-01), 81-94  |x 0168-2563  |q 124:1-3<81  |1 2015  |2 124  |o 10533