Ecological Archives E096-142-A1

Jörg Schaller, Alexander Tischer, Eric Struyf, Martina Bremer, Dácil Unzué Belmonte, and Karin Potthast. 2015. Fire enhances phosphorus availability in topsoils depending on binding properties. Ecology 96:1598–1606. http://dx.doi.org/10.1890/14-1311.1

Appendix A. Characterization of the ashes and Pi and Pt related to mass after burning of Bray and Olsen P as well as Bray Pi and Pt related to mass prior to burning.

Table A1. Characterization of the different ashes (from spruce, beech and peat) by X-ray-diffraction and thermoanalysis.

 

Spruce ash

Beech ash

Peat ash

X-ray-diffraction

% SiO2 (crystalline)

12

59–-63

40

% Calcit (crystalline)

9.1

< 2

15.5

% feldspar

< 5

< 2

< 5

amorph share

74–78

35–40

40–45

theromoanalysis

1. step
mass loss

till 150 °C
2.28 %

till 160 °C
0.68 %

till 180 °C
1.02 %

2. step
mass loss

150 – 275 °C
0.3 %

 

 

3. step
mass loss

275 – 550 °C
0.59 %

160 – 550 °C
0.16 %

180 – 550 °C
1.58 %

4. step (CaCO3 related)
mass loss

550 – 765 °C
7.1 %

550 – 750 °C
0.9 %

600 – 760 °C
19.5 %

5. step
mass loss

765 – 1000 °C
0.47 %

750 – 1000 °C
0.45 %

760 – 1000 °C
0.61 %

 

FigA1

Fig. A1. Extractable inorganic phosphorus (Pi) and extractable total phosphorus (Pt) of the different types of organic matter after different fire treatments (C-control, BC-350°C and Ash-550°C) related to mass after burning. Pi/Pt of control was analyzed after Bray whereas Pi/Pt of black carbon and ash were analyzed after Olsen in view of substrate pH.

 

FigA2

Fig. A2. Bray-Pi of the different types of organic matter after different fire treatments (C-control, BC-350°C and Ash-550°C) related to mass after burning.

 

FigA3

Fig. A3. Bray-Pi of the different types of organic matter after different fire treatments (C-control, BC-350°C and Ash-550°C) related to initial mass prior burning.

 

FigA4

Fig. A4. Bray-Pt of the different types of organic matter after different fire treatments (C-control, BC-350°C and Ash-550°C) related to mass after burning.

 

FigA5

Fig. A5. Bray-Pt of the different types of organic matter after different fire treatments (C-control, BC-350°C and Ash-550°C) related to initial mass prior burning.

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