Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra
Abstract Phosphorus (P) limits or co‐limits plant and microbial life in multiple ecosystems, including the arctic tundra. Although current global carbon (C) models focus on the coupling between soil nitrogen (N) and C, ecosystem P response to climate warming may also influence the global C cycle. Pe...
Published in: | Ecosphere |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1002/ecs2.3838 https://doaj.org/article/ba40805e1fea4b38af2b2393f901eeab |
id |
ftdoajarticles:oai:doaj.org/article:ba40805e1fea4b38af2b2393f901eeab |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ba40805e1fea4b38af2b2393f901eeab 2023-05-15T14:55:41+02:00 Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra Jennie R. McLaren Kate M. Buckeridge 2021-11-01T00:00:00Z https://doi.org/10.1002/ecs2.3838 https://doaj.org/article/ba40805e1fea4b38af2b2393f901eeab EN eng Wiley https://doi.org/10.1002/ecs2.3838 https://doaj.org/toc/2150-8925 2150-8925 doi:10.1002/ecs2.3838 https://doaj.org/article/ba40805e1fea4b38af2b2393f901eeab Ecosphere, Vol 12, Iss 11, Pp n/a-n/a (2021) climate change experimental warming extracellular enzyme activity long‐term phosphorus toolik LTER Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ecs2.3838 2022-12-30T20:16:24Z Abstract Phosphorus (P) limits or co‐limits plant and microbial life in multiple ecosystems, including the arctic tundra. Although current global carbon (C) models focus on the coupling between soil nitrogen (N) and C, ecosystem P response to climate warming may also influence the global C cycle. Permafrost soils may see enhanced or reduced P availability under climate warming through multiple mechanisms including changing litter inputs through plant community change, changing plant–microbial dynamics, altered rates of mineralization of soil organic P through increased microbial activity, and newly exposed mineral‐bound P via deeper thaw. We investigated the effect of long‐term warming on plant leaf, multiple soil and microbial C, N, and P pools, and microbial extracellular enzyme activities, in Alaskan tundra plots underlain by permafrost. Here, we show that 25 yr of experimental summer warming increases community‐level plant leaf P through changing community composition to favour relatively P‐rich plant species. However, despite associated increases in P‐rich litter inputs, we found only a few responses in the belowground pools of P available for plant and microbial uptake, including a weak positive response for citric acid–extractable PO4 in the surface soil, a decrease in microbial biomass P, and no change in soil P (or C or N) stocks. This weak, neutral, or negative belowground P response to warming despite enhanced litter P inputs is consistent with a growing number of studies in the arctic tundra that find no long‐term response of soil C and N stocks to warming. Article in Journal/Newspaper Arctic Climate change permafrost Tundra Directory of Open Access Journals: DOAJ Articles Arctic Ecosphere 12 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate change experimental warming extracellular enzyme activity long‐term phosphorus toolik LTER Ecology QH540-549.5 |
spellingShingle |
climate change experimental warming extracellular enzyme activity long‐term phosphorus toolik LTER Ecology QH540-549.5 Jennie R. McLaren Kate M. Buckeridge Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
topic_facet |
climate change experimental warming extracellular enzyme activity long‐term phosphorus toolik LTER Ecology QH540-549.5 |
description |
Abstract Phosphorus (P) limits or co‐limits plant and microbial life in multiple ecosystems, including the arctic tundra. Although current global carbon (C) models focus on the coupling between soil nitrogen (N) and C, ecosystem P response to climate warming may also influence the global C cycle. Permafrost soils may see enhanced or reduced P availability under climate warming through multiple mechanisms including changing litter inputs through plant community change, changing plant–microbial dynamics, altered rates of mineralization of soil organic P through increased microbial activity, and newly exposed mineral‐bound P via deeper thaw. We investigated the effect of long‐term warming on plant leaf, multiple soil and microbial C, N, and P pools, and microbial extracellular enzyme activities, in Alaskan tundra plots underlain by permafrost. Here, we show that 25 yr of experimental summer warming increases community‐level plant leaf P through changing community composition to favour relatively P‐rich plant species. However, despite associated increases in P‐rich litter inputs, we found only a few responses in the belowground pools of P available for plant and microbial uptake, including a weak positive response for citric acid–extractable PO4 in the surface soil, a decrease in microbial biomass P, and no change in soil P (or C or N) stocks. This weak, neutral, or negative belowground P response to warming despite enhanced litter P inputs is consistent with a growing number of studies in the arctic tundra that find no long‐term response of soil C and N stocks to warming. |
format |
Article in Journal/Newspaper |
author |
Jennie R. McLaren Kate M. Buckeridge |
author_facet |
Jennie R. McLaren Kate M. Buckeridge |
author_sort |
Jennie R. McLaren |
title |
Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
title_short |
Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
title_full |
Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
title_fullStr |
Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
title_full_unstemmed |
Enhanced plant leaf P and unchanged soil P stocks after a quarter century of warming in the arctic tundra |
title_sort |
enhanced plant leaf p and unchanged soil p stocks after a quarter century of warming in the arctic tundra |
publisher |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ecs2.3838 https://doaj.org/article/ba40805e1fea4b38af2b2393f901eeab |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost Tundra |
genre_facet |
Arctic Climate change permafrost Tundra |
op_source |
Ecosphere, Vol 12, Iss 11, Pp n/a-n/a (2021) |
op_relation |
https://doi.org/10.1002/ecs2.3838 https://doaj.org/toc/2150-8925 2150-8925 doi:10.1002/ecs2.3838 https://doaj.org/article/ba40805e1fea4b38af2b2393f901eeab |
op_doi |
https://doi.org/10.1002/ecs2.3838 |
container_title |
Ecosphere |
container_volume |
12 |
container_issue |
11 |
_version_ |
1766327710795169792 |