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20231226050215.0 |
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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16578
|2 doi
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|a pubmed24n1169.xml
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|a (DE-627)NLM350972451
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|a (NLM)36585918
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Yang, Qiannan
|e verfasserin
|4 aut
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| 245 |
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|a Isotopic evidence for increased carbon and nitrogen exchanges between peatland plants and their symbiotic microbes with rising atmospheric CO2 concentrations since 15,000 cal. year BP
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 07.03.2023
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|a Date Revised 26.05.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 John Wiley & Sons Ltd.
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|a Whether nitrogen (N) availability will limit plant growth and removal of atmospheric CO2 by the terrestrial biosphere this century is controversial. Studies have suggested that N could progressively limit plant growth, as trees and soils accumulate N in slowly cycling biomass pools in response to increases in carbon sequestration. However, a question remains over whether longer-term (decadal to century) feedbacks between climate, CO2 and plant N uptake could emerge to reduce ecosystem-level N limitations. The symbioses between plants and microbes can help plants to acquire N from the soil or from the atmosphere via biological N2 fixation-the pathway through which N can be rapidly brought into ecosystems and thereby partially or completely alleviate N limitation on plant productivity. Here we present measurements of plant N isotope composition (δ15 N) in a peat core that dates to 15,000 cal. year BP to ascertain ecosystem-level N cycling responses to rising atmospheric CO2 concentrations. We find that pre-industrial increases in global atmospheric CO2 concentrations corresponded with a decrease in the δ15 N of both Sphagnum moss and Ericaceae when constrained for climatic factors. A modern experiment demonstrates that the δ15 N of Sphagnum decreases with increasing N2 -fixation rates. These findings suggest that plant-microbe symbioses that facilitate N acquisition are, over the long term, enhanced under rising atmospheric CO2 concentrations, highlighting an ecosystem-level feedback mechanism whereby N constraints on terrestrial carbon storage can be overcome
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|a Journal Article
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|a Holocene
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|a Pleistocene
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|a Sphagnum moss
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|a elevated CO2
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|a mycorrhizal fungi
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|a nitrogen fixation
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|a northern peatlands
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|a δ15N
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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| 700 |
1 |
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|a Liu, Ziping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Houlton, Benjamin Z
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gao, Decai
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chang, Qing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Hongkai
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fan, Xianlei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Bai
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bai, Edith
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 29(2023), 7 vom: 31. Apr., Seite 1939-1950
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
8 |
|g volume:29
|g year:2023
|g number:7
|g day:31
|g month:04
|g pages:1939-1950
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| 856 |
4 |
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|u http://dx.doi.org/10.1111/gcb.16578
|3 Volltext
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|d 29
|j 2023
|e 7
|b 31
|c 04
|h 1939-1950
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