Can earthworms alleviate nutrient disorders of plants subjected to calcium carbonate excess?

Bityutskii, Nikolai P.; Kaidun, Polina; Yakkonen, Kirill L.

doi:10.1016/j.apsoil.2015.09.002

Cited by 10 publications

(9 citation statements)

References 39 publications

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“…Exoenzymes produced by ingested microorganisms enhance the degradation of complex organic matter during their passage through the gut (Drake and Horn, 2007) and might thereby enhance the release of SOM-derived Si. Earthworms (A. caliginosa and L. terrestris) prime the release of mobile and available microelements in soil (Bityutskii et al, 2012a(Bityutskii et al, , 2016. Moreover, a correlation has been found between the effect of Eisenia fetida on dissolved organic carbon (DOC) and the concentration of water-extractable metals (Wen et al, 2004).…”

Section: Discussionmentioning

confidence: 96%

“…A detailed description of the experimental design has been reported most recently (Bityutskii et al, 2016). Briefly, fresh soils used in the þCaCO 3 treatments were mixed with CaCO 3 prior to the experiments (I and II) ± earthworms.…”

Section: Methodsmentioning

confidence: 99%

“…A detailed description of plant growth responses on earthworm and CaCO 3 treatments has recently been given (Bityutskii et al, 2016). Briefly, plant biomass and biomass portioning were not significantly affected by earthworms or CaCO 3 , irrespective of year.…”

Section: Effect On Soil Ph and Plant Growthmentioning

confidence: 99%

“…The earthworm casts were collected (experiment I) and soil were pre-incubated (experiment II) as described previously (Bityutskii et al, 2016). Briefly, after voiding their guts on moist filter paper for 4 days, 12 individuals from a single species were added to each experimental soil and kept in the dark at room temperature (24 h).…”

Section: Earthworms and Their Castsmentioning

confidence: 99%

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Earthworms can increase mobility and bioavailability of silicon in soil

Bityutskii

Kaidun

Yakkonen

2016

Soil Biology and Biochemistry

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Section: Discussionmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Effect On Soil Ph and Plant Growthmentioning

confidence: 99%

Section: Earthworms and Their Castsmentioning

confidence: 99%

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Earthworms can increase mobility and bioavailability of silicon in soil

Bityutskii

Kaidun

Yakkonen

2016

Soil Biology and Biochemistry

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“…L. rubellus may be more effective at consuming forest floor material especially with higher C concentration, potentially due to preferential consumption of more humified SOM than A. agrestis (for information about preferential consumption of earthworms, see Edwards and Bohlen 1996;Morgan and Morgan 1999). Moreover, the soil microorganisms associated with mucus layer and intestine of L. rubellus may be better decomposers than those cohabitating with A. agrestis (Bityutskii et al 2016). The linear change in forest floor C suggests that feeding or decomposition of C compounds was consistent through time.…”

Section: Discussionmentioning

confidence: 96%

Forest floor decomposition, metal exchangeability, and metal bioaccumulation by exotic earthworms: Amynthas agrestis and Lumbricus rubellus

Richardson

Görres

Friedland

2016

Environ Sci Pollut Res

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Earthworms have the potential to reduce the retention of pollutant and plant essential metals in the forest floor (organic horizons) by decomposing organic matter and increasing exchangeability of metals. We conducted a laboratory experiment to investigate the effects of two exotic earthworms, Amynthas agrestis and Lumbricus rubellus, on forest floor decomposition, metal exchangeability, and metal bioaccumulation. Eighty-one pots containing homogenized forest floor material were incubated for 20, 40, or 80 days under three treatments: no earthworms, A. agrestis added, or L. rubellus added. For earthworm treatments, A. agrestis and L. rubellus were stocked at densities observed in previous field studies. Pots containing either A. agrestis or L. rubellus had lost more forest floor mass than the control plots after 40 and 80 days of incubation. Forest floor pots containing A. agrestis had significantly lower % C (16 ± 1.5 %) than control pots (21 ± 1.2 %) after 80 days. However, L. rubellus consumed more forest floor and C mass than A. agrestis, when evaluated on a per earthworm biomass basis. Exchangeable (0.1 M KCl + 0.01 M AcOH extractable) and stable (15 M HNO3+ 10 M HCl extractable) concentrations of Al, Ca, Cd, Cu, Mg, Mn, Pb, and Zn in forest floor material were measured. Stable concentrations and % exchangeable metals in forest floor material were similar among treatments. Although exchangeable metal concentrations varied significantly for most metals among treatments (except Mg and Zn), we conclude that earthworms did not increase or decrease the exchangeability of metals. However, earthworms bioaccumulated Cu, Cd, Zn, and Mg and had potentially hazardous tissue concentrations of Al and Pb. This was best illustrated by calculating bioaccumulation factors using exchangeable concentrations rather than total concentrations. Future research is needed to understand the effect of earthworms on metals in other soil types.

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