Wood ash application increases pH but does not harm the soil mesofauna
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Wood ash application increases pH but does not harm the soil mesofauna. / Qin, Jiayi; Hovmand, Mads Frederik; Ekelund, Flemming; Rønn, Regin; Christensen, Søren; Groot, Gerard Arjen de; Mortensen, Louise Hindborg; Skov, Simon; Krogh, Paul Henning.
In: Environmental Pollution, Vol. 224, 2017, p. 581-589.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Wood ash application increases pH but does not harm the soil mesofauna
AU - Qin, Jiayi
AU - Hovmand, Mads Frederik
AU - Ekelund, Flemming
AU - Rønn, Regin
AU - Christensen, Søren
AU - Groot, Gerard Arjen de
AU - Mortensen, Louise Hindborg
AU - Skov, Simon
AU - Krogh, Paul Henning
PY - 2017
Y1 - 2017
N2 - Application of bioash from biofuel combustion to soil supports nutrient recycling, but may have unwanted and detrimental ecotoxicological side-effects, as the ash is a complex mixture of compounds that could affect soil invertebrates directly or through changes in their food or habitat conditions. To examine this, we performed laboratory toxicity studies of the effects of wood-ash added to an agricultural soil and the organic horizon of a coniferous plantation soil with the detrivore soil collembolans Folsomia candida and Onychiurus yodai, the gamasid predaceous mite Hypoaspis aculeifer, and the enchytraeid worm Enchytraeus crypticus. We used ash concentrations spanning 0-75 g kg-1 soil. As ash increases pH we compared bioash effects with effects of calcium hydroxide, Ca(OH)2, the main liming component of ash. Only high ash concentrations above 15 g kg-1 agricultural soil or 17 t ha-1 had significant effects on the collembolans. The wood ash neither affected H. aculeifer nor E. crypticus. The estimated osmolalities of Ca(OH)2 and the wood ash were similar at the LC50 concentration level. We conclude that short-term chronic effects of wood ash differ among different soil types, and osmotic stress is the likely cause of effects while high pH and heavy metals is of minor importance.
AB - Application of bioash from biofuel combustion to soil supports nutrient recycling, but may have unwanted and detrimental ecotoxicological side-effects, as the ash is a complex mixture of compounds that could affect soil invertebrates directly or through changes in their food or habitat conditions. To examine this, we performed laboratory toxicity studies of the effects of wood-ash added to an agricultural soil and the organic horizon of a coniferous plantation soil with the detrivore soil collembolans Folsomia candida and Onychiurus yodai, the gamasid predaceous mite Hypoaspis aculeifer, and the enchytraeid worm Enchytraeus crypticus. We used ash concentrations spanning 0-75 g kg-1 soil. As ash increases pH we compared bioash effects with effects of calcium hydroxide, Ca(OH)2, the main liming component of ash. Only high ash concentrations above 15 g kg-1 agricultural soil or 17 t ha-1 had significant effects on the collembolans. The wood ash neither affected H. aculeifer nor E. crypticus. The estimated osmolalities of Ca(OH)2 and the wood ash were similar at the LC50 concentration level. We conclude that short-term chronic effects of wood ash differ among different soil types, and osmotic stress is the likely cause of effects while high pH and heavy metals is of minor importance.
KW - Enchytraeus crypticus
KW - Folsomia candida
KW - Hypoaspis aculeifer
KW - Onychiurus yodai
KW - Osmolality
KW - Reproduction
KW - Soil pH
KW - Wood ash
U2 - 10.1016/j.envpol.2017.02.041
DO - 10.1016/j.envpol.2017.02.041
M3 - Journal article
C2 - 28245950
AN - SCOPUS:85013811636
VL - 224
SP - 581
EP - 589
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
ER -
ID: 173942745