Rock-type control of Ni, Cr, and Co phytoavailability in ultramafic soils
|Author(s)||Pedziwiatr Artur1, 2, Kierczak Jakub2, Waroszewski Jaroslaw1, Ratie Gildas3, Quantin Cecile4, Ponzevera Emmanuel5|
|Affiliation(s)||1 : Wroclaw Univ Environm & Life Sci, Inst Soil Sci & Environm Protect, Grunwaldzka 53, PL-50357 Wroclaw, Poland.
2 : Univ Wroclaw, Inst Geol Sci, Pl Maksa Borna 9, PL-50204 Wroclaw, Poland.
3 : Synchrotron SOLEIL, St Aubin BP48, F-91192 Gif Sur Yvette, France.
4 : Univ Paris Saclay, Univ Paris Sud, CNRS, GEOPS,UMR 8148, Bat 504, F-91405 Orsay, France.
5 : IFREMER, Ctr Brest, Unite Geosci Marines, F-29280 Plouzane, France.
|Source||Plant And Soil (0032-079X) (Springer), 2018-02 , Vol. 423 , N. 1-2 , P. 339-362|
|WOS© Times Cited||23|
|Keyword(s)||Peridotite, Serpentinite, Excluders, Ni isotopes, Ca/mg ratio|
Background and aims
Ultramafic soils constitute an extreme environment for plants because of specific physico-chemical properties and the presence of Ni, Cr, and Co. We hypothesized that type of ultramafic parent rock depending on their origin affects the composition of soils and plants. Therefore, phytoavailability of metals would be higher in soil derived from serpentinized peridotite compared to serpentinite because of differences in susceptibility of minerals to weathering.
Based on DTPA-CaCl2 extractions, we noted that soil derived from the serpentinized peridotite is characterized by a higher phytoavailability of Ni compared to soil derived from the serpentinite. On the contrary, plant species growing on soil derived from the serpentinite contain higher concentrations of metals.