01 Jul 2022
01 Jul 2022
Status: this preprint is currently under review for the journal ESSD.

Pan-Arctic soil element availability estimations

Peter Stimmler1, Mathias Goeckede2, Bo Elberling3, Susan Natali4, Peter Kuhry5, Nia Perron6, Fabrice Lacroix2, Gustaf Hugelius5,7, Oliver Sonnentag6, Jens Strauss8, Christina Minions4, Michael Sommer1, and Jörg Schaller1 Peter Stimmler et al.
  • 1Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
  • 2Max Planck Institute for Biogeochemistry, Jena, Germany
  • 3Center for Permafrost, Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
  • 4Woodwell Climate Research Center, Falmouth, USA
  • 5University Stockholm, Stockholm, Sweden
  • 6Département de Géographie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
  • 7Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
  • 8Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Permafrost Research Section, Potsdam, Germany

Abstract. Arctic soils store large amounts of organic carbon and other elements such as amorphous silica, silicon, calcium, iron, aluminium, and phosphorous. Global warming is projected to be most pronounced in the Arctic leading to thawing permafrost, which in turn is changing the soil element availability. To project how biogeochemical cycling in Arctic ecosystems will be affected by climate change, there is a need for data on element availability. Here, we analysed amorphous silica (ASi), silicon (Si), calcium (Ca), iron (Fe), phosphorus (P), and aluminium (Al) availability from 574 soil samples from the circumpolar Arctic region. We show large differences in ASi, Si, Ca, Fe, P, and Al availability among different lithologies and Arctic regions. We summarized these data in pan-Arctic maps of ASi, Si, Ca, Fe, P, and Al concentrations focussing on the top 100 cm of Arctic soil. Furthermore, we provide values for element availability for the organic and the mineral layer of the seasonally thawing active layer as well as for the uppermost permafrost layer. Our spatially explicit data on differences in the availability of elements between the different lithological classes and regions now and in the future will improve Arctic Earth system models for estimating current and future carbon and nutrient feedbacks under climate change.

Peter Stimmler et al.

Status: open (extended)

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  • RC1: 'Comment on essd-2022-123', Anonymous Referee #1, 18 Aug 2022 reply

Peter Stimmler et al.

Data sets

Pan-Arctic soil element availability estimations Jörg Schaller, Mathias Göckede

Peter Stimmler et al.


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Short summary
Arctic soils store large amounts of carbon and nutrients. The availability of nutrients such as silicon, calcium, iron, aluminum, phosphorus and amorphous silica is crucial to understand future carbon fluxes in the Arctic. Here we provide for the first time a unique data set on the availability of those nutrients for the different soil layers including the currently frozen permafrost layer. We relate this data to several geographical and geological parameters.