Role of biochar and Eisenia fetida on metal bioavailability and biochar effects on earthworm fitness

Huang, Caide; Wang, Weiyue; Yue, Shizhong; Adeel, Muhammad; Qiao, Yuhui

doi:10.1016/j.envpol.2020.114586

Cited by 42 publications

(19 citation statements)

References 53 publications

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“…<200 ng L -1 ), because of the very strong bonds formed between biochar and PAHs generated during pyrolysis (Godlewska et al 2021). Li et al (2011) and Huang et al (2020) both observed that biochar inhibited earthworm growth and antioxidant enzyme activities when applied to PTEs contaminated soil. However, Sanchez-Hernandez et al (2019a) showed that, although some earthworms (e.g.…”

Section: Introductionmentioning

confidence: 98%

Impact of Eisenia fetida earthworms and biochar on potentially toxic element mobility and health of a contaminated soil

Garau

Sizmur

Coole

et al. 2022

Science of The Total Environment

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Section: Introductionmentioning

confidence: 98%

Impact of Eisenia fetida earthworms and biochar on potentially toxic element mobility and health of a contaminated soil

Garau

Sizmur

Coole

et al. 2022

Science of The Total Environment

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“…Huang et al (2020) found that soil pH was decreased from 7.15 to 6.90, when 50 E. fetida were introduced into a pot with 500 g soil after 28-day exposure. 47 Similarly, after 28 days, the immobilization effect of biochar was weakened with 15-E. fetida in 450 g soil and earthworm activities significantly reduced soil pH by 0.1−0.19 unit. 48 However, more studies showed that the effects of earthworm activities were to increase rather than decrease the soil pH.…”

Section: Resultsmentioning

confidence: 93%

“…Soil pH is the primary factor controlling the mobility and bioavailability of heavy metals in soil. Huang et al (2020) found that soil pH was decreased from 7.15 to 6.90, when 50 E. fetida were introduced into a pot with 500 g soil after 28-day exposure . Similarly, after 28 days, the immobilization effect of biochar was weakened with 15- E. fetida in 450 g soil and earthworm activities significantly reduced soil pH by 0.1–0.19 unit .…”

Section: Resultsmentioning

confidence: 99%

Earthworm Enhanced Phytoremediation of U in Army Test Range Soil with Indian Mustard and Sunflower

Guo

Proctor

Larson

et al. 2022

ACS Earth Space Chem.

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Wars and military testing have resulted in the depleted uranium (DU) contamination of military proving grounds. In the present study, a pot experiment was conducted to explore the effects of earthworms on the uranium phytoremediation process. Effects of cattle manure and Eisenia fetida on biomass and U accumulation of plants, U solubility, and pH in soil were investigated using DU-contaminated soil from Yuma Proving Ground in Arizona, U.S. Results showed that the growth of plants was promoted with the addition of cattle manure and earthworms, which was more obvious for sunflowers. Moreover, the U accumulation was significantly enhanced by earthworms and cattle manure, with a 68.5% (Indian mustard) and 85.0% (sunflower) increase in the cattle manure plus earthworm treatments, and the removal efficiencies of U were correspondingly improved. No significant effect on soil pH was observed, while the soil water extractable U was increased by 84.9–87.8% in the earthworm treatments. Moreover, after the 4-week cultivation, cattle manure benefited the survival of earthworms and slightly increased their average fresh weight in DU-contaminated soil. Therefore, this study concludes that earthworms combined with agricultural organic wastes was an alternative approach to effectively remediate DU-contaminated soils in firing ranges.

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“…Meanwhile, RDA ranking results indicated that earthworm density (total, adult, and juvenile individuals) increased with the increase in TK or AK content (p<0.05), suggesting that K was a crucial factor that enhanced the growth of earthworms; in contrast, earthworm activities also exhibit synergistic effects on soil fertility (such as affecting nitrogen mineralization, and increasing the availability of phosphorous and potassium), promotes the survival of soil organisms even in Moreover, negatively correlations between juvenile worms and pH values (p<0.05, Table 3) suggesting that juveniles may display pH sensitivity, which directly or indirectly in uences the metal pools and earthworm community. Our study sites were located in the areas of North China with alkaline loam soil and pH ranging from 7.9 to 8.3 units, decreased the bioavailability of metals to earthworms, and possibly inhibiting the growth or reproduction of earthworms (Umiker et al, 2009;Huang et al, 2020). A previous study observed that the earthworm communities (total density and abundance) were in uenced by the soil properties (such as organic matter, pH, nitrogen, phosphorus, and potassium) in natural and agricultural ecosystems (Ernst and Emmerling, 2009;Solomou et al, 2013;Carnovale et al, 2015;Singh et al, 2020).…”

Section: Relationships Between Soil Variables and Earthworm Communitymentioning

confidence: 99%

“…Furthermore, information collected from laboratory studies may be impractical (OECD 222, 2004;McBride et al, 2009). Alterations in earthworm community structure and abundance can accurately re ect the metal toxicity in elds (Wang et al, 2018;Huang et al, 2020), where metal contamination often comprises a mixture of contaminants (Pascaud et al, 2014). Compared to short-term exposure, chronic metal exposure in elds may be detrimental to earthworms; the long-term conditions may exhibit unexpected slow toxicity, even at low metal concentrations in soils (Tang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Earthworm Community In Relation To Soil Properties And Metals In Hebei Province, North China

Yin¹,

Wang²,

Chen³

et al. 2021

Preprint

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In this study, we examined the influence of soil properties (pH, total potassium (TK), available potassium (AK), total nitrogen (TN), total phosphorus (TP), available potassium (AP), cation exchange capacity (CEC), and soil organic carbon (SOC)), and metals (Cd, Pb, Cu, and Zn) on the density, diversity, and species composition of earthworms in the Hebei Province, North China. In total, 535 earthworms were collected from 20 sites in the study area, and belonged to three families, six genera, and ten species. Amynthas hupeiensis (39.4%) and Drawida gisti (37.8%) were the dominant species. The correlations between soil variables and earthworm composition determined using redundancy analysis indicated that SOC, TK, and AK enhanced earthworm density (total, adult, and juvenile) and species (A. hupeiensis and D. gisti) abundances. Earthworm composition remained unaffected by the metals (Cd and Pb) in the uncontaminated sites; in contrast, species were absent in areas with high metal concentrations (S19 and S20). Soil TN content was negatively and positively related to Shannon and Peilou indexes (p<0.05), respectively, indicating that TN may be pivotal in influencing earthworm diversity and species evenness. Overall, the soil properties such as K, SOC, and TN were the key variables affecting earthworm density, diversity, and species dominance.

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Role of biochar and Eisenia fetida on metal bioavailability and biochar effects on earthworm fitness

Cited by 42 publications

References 53 publications

Impact of Eisenia fetida earthworms and biochar on potentially toxic element mobility and health of a contaminated soil

Impact of Eisenia fetida earthworms and biochar on potentially toxic element mobility and health of a contaminated soil

Earthworm Enhanced Phytoremediation of U in Army Test Range Soil with Indian Mustard and Sunflower

Earthworm Community In Relation To Soil Properties And Metals In Hebei Province, North China

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