Anecic earthworms generate more topsoil than they contribute to erosion – Evidence at catchment scale in northern Vietnam

Bottinelli, Nicolas; Maeght, Jean‐Luc; Pham, R.D.; Valentin, Christian; Rumpel, Cornélia; Pham, Quang Van; Nguyen, Tran Tuan; Lam, Dao; Nguyen, Anh D.; Trần, Thu Hương; Zaiss, Rainer; Jouquet, Pascal

doi:10.1016/j.catena.2021.105186

Cited by 18 publications

(3 citation statements)

References 31 publications

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“…Though species richness increased, the conservation value of all these very common species is very low. In Dong Cao, only closed forest produced some conservation recovery in the occurrence of the species groups 1 and 2 (Community 1).In good structured clay soils carbon sequestration is high(Bottinelli et al 2021) and more carbon accumulates in uncultivated soils than in cultivated land(Feller and Beare 1998, this study). After abandonment soil carbon accumulation in Dong Cao was high, an average rate of 1.09 tC ha − 1 year − 1 in the top 15 cm soil measured over a thirteen-year interval Minasny et al (2017).…”

mentioning

confidence: 72%

Forest regeneration following land abandonment is driven by historic land use affecting plant diversity and soil carbon stocks (mountainous tropical Asia)

Rouw¹,

Bottinelli

Huon³

et al. 2023

Preprint

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Context Farmland on steep slopes is increasingly abandoned because it is unsuitable for most forms of modern agriculture. Succession back to forest is often slow or inexistent due to over-exploitation. Observations and measurements in Dong Cao catchment 47.9 ha Vietnam, started under farming and continued after abandonment: 20 years of uninterrupted monitoring of soil, water, land use and vegetation were integrated in this study.Objective Our aim is to identify the specific combination of soil features and agricultural practices that are responsible for fast, slow or blocked succession. We differentiate between the recovery of forest structure, relatively easy, and recovery of the original species composition, more difficult.Methods Multivariate analysis of vegetation data produced plant communities in a gradient of complexity. Using classic statistics, we sought relationships between environmental variables, land use and vegetation.Results Forest recovery failed the first 10 years, then part of the catchment developed forest. Land use explained best the distribution of plant communities over the catchment, slope and soil features were less related. Cassava cropping seriously slowed down the succession to closed forest. During abandonment soil carbon stocks (0–15 cm depth) increased with about 3% per year.Conclusion Starting from weedy thickets (2002) we distinguished two successional pathways: a positive pathway towards increased resemblance with the original Lowland forest via broken forest to closed deciduous to closed evergreen forest; a negative pathway away from the original forest species composition to degraded shrub land and low grass. Livestock was related to the negative pathway.

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mentioning

confidence: 72%

Forest regeneration following land abandonment is driven by historic land use affecting plant diversity and soil carbon stocks (mountainous tropical Asia)

Rouw¹,

Bottinelli

Huon³

et al. 2023

Preprint

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“…Anecic earthworms play a crucial role in accelerating the pedological processes by enhancing decomposition of soil organic matter, nutrient cycling, and soil formation (Kiyasudeen et al, 2015;Gavinelli et al, 2018). Bottinelli et al (2021) demonstrated that anecic earthworms (Amynthas adexilis) could induce soil generation to counteract the effects of soil erosion. The influence of anecic species Lampito mauritii on soil enzymatic activity in cadmium-amended soils has also been studied, wherein this species by accumulating Cd in their gut reduced the Cd-induced stress in microorganisms resulting in an increased microbial enzymatic activity (Sivakumar et al, 2015).…”

Section: Anecic Earthwormsmentioning

confidence: 99%

Role of bulking agents, process optimization, and different earthworm species in the vermiremediation process of industrial wastes: A review

2023

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Rapid industrialization and consumerism have aggravated the generation of industrial waste globally, consequently posing a serious problem related to their treatment, disposal, and management. Industrial wastes or sludges are mainly characterised by undesirable levels of heavy metals, toxic chemicals, and other toxic organic compounds. Deposition of such wastes in the environmental matrices for prolonged periods may result in serious contamination, and the consequent accumulation of these harmful constituents in the ecological food chain. Unavailability of appropriate disposal mechanisms for these sludges is a matter of serious concern that could severely pollute the environment and risk human health. Vermicomposting has emerged as a feasible and environmentally friendly bioremediation technology that could provide a solution to this problem. However, the vermicomposting of industrial sludges requires a better understanding of its inextricable factors to make it a viable process. Thus, the present study was undertaken to provide insights on the influence of different bulking agents and abiotic factors on the vermicomposting process, as well as, the role of different earthworm species in the successful implementation of this process in the bioremediation of industrial waste.

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“…The living organisms contribute to topsoil regeneration by humus formation. They decompose the organic matter into assimilable forms, increase the soil porosity (and consequently, the aeration), and help the movement of organic matter and residues within the topsoil [106][107][108]. The microorganisms transform the nitrogen present in the fertilizers into nitrate, through the nitrification process.…”

Section: Nutrient Releasing Processesmentioning

confidence: 99%

Review of Soil Quality Improvement Using Biopolymers from Leather Waste

et al. 2022

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This paper reviews the advantages and disadvantages of the use of fertilizers obtained from leather waste, to ameliorate the agricultural soil quality. The use of leather waste (hides and skins) as raw materials to obtain biopolymer-based fertilizers is an excellent example of a circular economy. This allows the recovery of a large quantity of the tanning agent in the case of tanned wastes, as well as the valorization of significant quantities of waste that would be otherwise disposed of by landfilling. The composition of organic biopolymers obtained from leather waste is a rich source of macronutrients (nitrogen, calcium, magnesium, sodium, potassium), and micronutrients (boron, chloride, copper, iron, manganese, molybdenum, nickel and zinc), necessary to improve the composition of agricultural soils, and to remediate the degraded soils. This enhances plant growth ensuring better crops. The nutrient release tests have demonstrated that, by using the biofertilizers with collagen or with collagen cross-linked with synthetic polymers, the nutrient release can be controlled and slowed. In this case, the loss of nutrients by leaching into the inferior layers of the soil and ground water is minimized, avoiding groundwater contamination, especially with nitrate.

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Anecic earthworms generate more topsoil than they contribute to erosion – Evidence at catchment scale in northern Vietnam

Cited by 18 publications

References 31 publications

Forest regeneration following land abandonment is driven by historic land use affecting plant diversity and soil carbon stocks (mountainous tropical Asia)

Forest regeneration following land abandonment is driven by historic land use affecting plant diversity and soil carbon stocks (mountainous tropical Asia)

Role of bulking agents, process optimization, and different earthworm species in the vermiremediation process of industrial wastes: A review

Review of Soil Quality Improvement Using Biopolymers from Leather Waste

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