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Silicon increases the phosphorus availability of Arctic soils

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00004621
URN to cite this document: urn:nbn:de:bvb:703-epub-4621-1

Title data

Schaller, Jörg ; Faucherre, Samuel ; Joss, Hanna ; Obst, Martin ; Goeckede, Mathias ; Planer-Friedrich, Britta ; Peiffer, Stefan ; Gilfedder, Ben ; Elberling, Bo:
Silicon increases the phosphorus availability of Arctic soils.
In: Scientific Reports. Vol. 9 (2019) . - No 449.
ISSN 2045-2322
DOI der Verlagsversion: https://doi.org/10.1038/s41598-018-37104-6

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Abstract

Phosphorus availability in soils is an important parameter influencing primary production in terrestrial ecosystems. Phosphorus limitation exists in many soils since a high proportion of soil phosphorus is stored in unavailable forms for plants, such as bound to iron minerals or stabilized organic matter. This is in spite of soils having a high amount of total soil phosphorus. The feasibility of silicon to mobilize phosphorus from strong binding sites of iron minerals has been shown for marine sediments but is less well studied in soils. Here we tested the effect of silicon on phosphorus mobilization for 143 Artic soils (representing contrasting soil characteristics), which have not been affected by agriculture or other anthropogenic management practices. In agreement with marine studies, silicon availabilities were significantly positive correlated to phosphorus mobilization in these soils. Laboratory experiments confirmed that silicon addition significantly increases phosphorus mobilization, by mobilizing Fe(II)-P phases from mineral surfaces. Silicon addition increased also soil respiration in phosphorus deficient soils. We conclude that silicon is a key component regulating mobilization of phosphorous in Arctic soils, suggesting that this may also be important for sustainable management of phosphorus availability in soils in general.

Further data

Item Type: Article in a journal
Additional notes (visible to public): BAYCEER149125
BAYCEER149803
DDC Subjects: 500 Science
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Environmental Geochemistry Group
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Environmental Geochemistry Group > Professor Environmental Geochemistry - Univ.-Prof. Dr. Britta Planer-Friedrich
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-4621-1
Date Deposited: 27 Mar 2020 11:59
Last Modified: 27 Mar 2020 11:59
URI: https://epub.uni-bayreuth.de/id/eprint/4621

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