Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline
Treelines advance due to climate warming. The impacts of this vegetation shift on plant–soil nutrient cycling are still uncertain, yet highly relevant as nutrient availability stimulates tree growth. Here, we investigated nitrogen (N) and phosphorus (P) in plant and soil pools along two tundra–fores...
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ftuhalleopendata:oai:opendata.uni-halle.de:1981185920/117885 2024-06-02T08:09:56+00:00 Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline Fetzer, Jasmin Moiseev, Pavel Frossard, Emmanuel Kaiser, Klaus Mayer, Mathias Gavazov, Konstantin Hagedorn, Frank 2024 application/pdf https://opendata.uni-halle.de//handle/1981185920/117885 https://doi.org/10.25673/115930 eng eng 1885808550 http://dx.doi.org/10.25673/115930 https://opendata.uni-halle.de//handle/1981185920/117885 https://creativecommons.org/licenses/by/4.0/ ddc:580 doc-type:Article 2024 ftuhalleopendata https://doi.org/10.25673/115930 2024-05-07T02:29:17Z Treelines advance due to climate warming. The impacts of this vegetation shift on plant–soil nutrient cycling are still uncertain, yet highly relevant as nutrient availability stimulates tree growth. Here, we investigated nitrogen (N) and phosphorus (P) in plant and soil pools along two tundra–forest transects on Kola Peninsula, Russia, with a documented elevation shift of birch-dominated treeline by 70 m during the last 50 years. Results show that although total N and P stocks in the soil–plant system did not change with elevation, their distribution was significantly altered. With the transition from high-elevation tundra to low-elevation forest, P stocks in stones decreased, possibly reflecting enhanced weathering. In contrast, N and P stocks in plant biomass approximately tripled and available P and N in the soil increased fivefold toward the forest. This was paralleled by decreasing carbon (C)-to-nutrient ratios in foliage and litter, smaller C:N:P ratios in microbial biomass, and lower enzymatic activities related to N and P acquisition in forest soils. An incubation experiment further demonstrated manifold higher N and P net mineralization rates in litter and soil in forest compared to tundra, likely due to smaller C:N:P ratios in decomposing organic matter. Overall, our results show that forest expansion increases the mobilization of available nutrients through enhanced weathering and positive plant–soil feedback, with nutrient-rich forest litter releasing greater amounts of N and P upon decomposition. While the low N and P availability in tundra may retard treeline advances, its improvement toward the forest likely promotes tree growth and forest development. Article in Journal/Newspaper kola peninsula Subarctic Tundra Share it - Open Access und Forschungsdaten-Repositorium der Hochschulbibliotheken in Sachsen-Anhalt Kola Peninsula |
institution |
Open Polar |
collection |
Share it - Open Access und Forschungsdaten-Repositorium der Hochschulbibliotheken in Sachsen-Anhalt |
op_collection_id |
ftuhalleopendata |
language |
English |
topic |
ddc:580 |
spellingShingle |
ddc:580 Fetzer, Jasmin Moiseev, Pavel Frossard, Emmanuel Kaiser, Klaus Mayer, Mathias Gavazov, Konstantin Hagedorn, Frank Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
topic_facet |
ddc:580 |
description |
Treelines advance due to climate warming. The impacts of this vegetation shift on plant–soil nutrient cycling are still uncertain, yet highly relevant as nutrient availability stimulates tree growth. Here, we investigated nitrogen (N) and phosphorus (P) in plant and soil pools along two tundra–forest transects on Kola Peninsula, Russia, with a documented elevation shift of birch-dominated treeline by 70 m during the last 50 years. Results show that although total N and P stocks in the soil–plant system did not change with elevation, their distribution was significantly altered. With the transition from high-elevation tundra to low-elevation forest, P stocks in stones decreased, possibly reflecting enhanced weathering. In contrast, N and P stocks in plant biomass approximately tripled and available P and N in the soil increased fivefold toward the forest. This was paralleled by decreasing carbon (C)-to-nutrient ratios in foliage and litter, smaller C:N:P ratios in microbial biomass, and lower enzymatic activities related to N and P acquisition in forest soils. An incubation experiment further demonstrated manifold higher N and P net mineralization rates in litter and soil in forest compared to tundra, likely due to smaller C:N:P ratios in decomposing organic matter. Overall, our results show that forest expansion increases the mobilization of available nutrients through enhanced weathering and positive plant–soil feedback, with nutrient-rich forest litter releasing greater amounts of N and P upon decomposition. While the low N and P availability in tundra may retard treeline advances, its improvement toward the forest likely promotes tree growth and forest development. |
format |
Article in Journal/Newspaper |
author |
Fetzer, Jasmin Moiseev, Pavel Frossard, Emmanuel Kaiser, Klaus Mayer, Mathias Gavazov, Konstantin Hagedorn, Frank |
author_facet |
Fetzer, Jasmin Moiseev, Pavel Frossard, Emmanuel Kaiser, Klaus Mayer, Mathias Gavazov, Konstantin Hagedorn, Frank |
author_sort |
Fetzer, Jasmin |
title |
Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
title_short |
Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
title_full |
Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
title_fullStr |
Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
title_full_unstemmed |
Plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
title_sort |
plant-soil interactions alter nitrogen and phosphorus dynamics in an advancing subarctic treeline |
publishDate |
2024 |
url |
https://opendata.uni-halle.de//handle/1981185920/117885 https://doi.org/10.25673/115930 |
geographic |
Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula Subarctic Tundra |
genre_facet |
kola peninsula Subarctic Tundra |
op_relation |
1885808550 http://dx.doi.org/10.25673/115930 https://opendata.uni-halle.de//handle/1981185920/117885 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.25673/115930 |
_version_ |
1800755725619691520 |