Crop residue displacement by soil inversion: Annelid responses and their impact on carbon and nitrogen dynamics in a lab-based mesocosm study

Engell, Ilka; Linsler, Deborah; Schrader, Stefan; Taylor, Astrid; Ludwig, Bernard; Potthoff, Martin

doi:10.1016/j.apsoil.2021.104151

Cited by 2 publications

(1 citation statement)

References 57 publications

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“…Dissolved organic matter rich in nutrients, such as that released from organic horizons or dung pats in the presence of potworms or beetles, respectively 171,175,181 , has also been reported to increase total nitrogen and phosphorus and ammonium-nitrogen in mineral soil [181][182][183][184] , potentially alleviating microbial nutrient limitations and boosting the microbial pathway of MAOM formation. This notion is supported by studies reporting microbial biomass stimulation in the presence of potworms and dung beetles [185][186][187] (but see also Liiri et al 175 and Menendez et al 179 ). However, microbial traits considered important to the microbial pathway of MAOM formation, such as microbial C use efficiency 25 , have not been investigated in tandem with potworms or beetles and hardly with springtails 188 (Fig.…”

Section: Dissolved Compoundsmentioning

confidence: 75%

Conceptualizing soil fauna effects on labile and stabilized soil organic matter

Angst,

Potapov,

Joly

et al. 2024

Nat Commun

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Fauna is highly abundant and diverse in soils worldwide, but surprisingly little is known about how it affects soil organic matter stabilization. Here, we review how the ecological strategies of a multitude of soil faunal taxa can affect the formation and persistence of labile (particulate organic matter, POM) and stabilized soil organic matter (mineral-associated organic matter, MAOM). We propose three major mechanisms - transformation, translocation, and grazing on microorganisms - by which soil fauna alters factors deemed essential in the formation of POM and MAOM, including the quantity and decomposability of organic matter, soil mineralogy, and the abundance, location, and composition of the microbial community. Determining the relevance of these mechanisms to POM and MAOM formation in cross-disciplinary studies that cover individual taxa and more complex faunal communities, and employ physical fractionation, isotopic, and microbiological approaches is essential to advance concepts, models, and policies focused on soil organic matter and effectively manage soils as carbon sinks, nutrient stores, and providers of food.

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