Relationship between home-field advantage of litter decomposition and priming of soil organic matter

Lonardo, D.P. Di; Manrubia, Marta; Boer, Wietse de; Zweers, Hans; Veen, G. F.; Wal, Annemieke van der

doi:10.1016/j.soilbio.2018.07.025

Cited by 32 publications

(22 citation statements)

References 70 publications

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“…In contrast to previous research showing a stronger HFA for litter decomposition translates into a stronger HFA for PE (Di Lonardo et al, ), we found a negative relationship between litter HFA and priming HFA (Figure b). As a result, a specialized litter decomposer community driving HFA cannot be assumed to become more effective at decomposing SOM following additions of litter.…”

Section: Discussioncontrasting

confidence: 99%

“…In addition, we determined home‐field advantage (HFA) for litter decomposition and PE by calculating the HFA as the % R increase in litter‐derived CO 2 and primed CO 2 at home compared to away environments for the two litter types, following Austin, Vivanco, González‐Arzac, and Pérez () and Di Lonardo et al ():

HFA = (R_{home} - R_{away}) / R_{home} \times 100

…”

Section: Methodsmentioning

confidence: 99%

“…Explanations include the decomposer communities being specialized in the utilization of litter derived from the plants with which they are associated (Ayres, Steltzer, Berg, & Wall, ). For example, in a recent laboratory incubation experiment, PE was shaped by microbial home‐field advantage (HFA) – specifically rates of litter decomposition and PE differ between home combinations of plant and litter versus away combinations (Di Lonardo et al, ). Critically, the strength and even occurrence of a litter based HFA can be influenced by interactions among climate, vegetation type including plant traits, and soil properties (Veen, Sundqvist, & Wardle, ).…”

Section: Introductionmentioning

confidence: 99%

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Litter quality and site characteristics interact to affect the response of priming effect to temperature in subtropical forests

et al. 2019

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Forest litter inputs to soil can stimulate the decomposition of older soil organic matter (SOM) via a priming effect (PE). The magnitude and underlying mechanisms driving PE are poorly understood, with especially little know about how litter quality and site conditions affect PE in situ. Further, very few studies have examined PE in tropical and subtropical soils. Here, we established low and high elevation sites (600 vs. 1,400 m a.s.l.) in the subtropical Wuyishan National Park, China, that differed with respect to mean annual temperature (MAT; ∆MAT = 4.2°C), vegetation, soil texture and soil moisture. We conducted a 1‐year field incubation study at these two sites to compare PE induced by adding low‐ and high‐quality 13C‐labelled leaf litter to soils. At the low elevation site, additions of high‐quality (low C/N) litter caused a PE that was 140% greater than the PE observed following additions of low‐quality (high C/N) litter. In contrast, we saw no significant differences in PE between litter types at the high elevation site, perhaps because PE was not limited by substrate quality at this cooler, finer textured and higher soil moisture coniferous site. In addition, we found a negative relationship between home‐field advantage (HFA) for litter decomposition and PE, indicating that specialized litter decomposer community driving HFA may not accelerate SOM decomposition via PE in the same way. In line with our observed strong relationship between PE and the efficiency of priming (PE size per unit of mineralized litter C), PEs induced by the high‐ and low‐quality litters were directed to microbial phosphorus (P) mining rather than nitrogen (N) mining. This interpretation aligns with observed increases in the activity of P acquiring extracellular enzymes, often described as phosphatases (P‐tases), as well as the positive relationship between the PE, P‐tase activity and the activity of C acquiring extracellular enzymes. Overall, this PE study across two contrasting sites highlights the important role of site characteristics and litter quality in regulating PE size. Further, we suggest that MAT may be a dominant driver of soil priming, through both the direct effects of litter quantity on labile substrate supply and the indirect effects of litter quality changes on downstream decomposer communities. A free Plain Language Summary can be found within the Supporting Information of this article.

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Section: Discussioncontrasting

confidence: 99%

HFA = (R_{home} - R_{away}) / R_{home} \times 100

…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Litter quality and site characteristics interact to affect the response of priming effect to temperature in subtropical forests

et al. 2019

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“…In August 2015, soil (0–10 cm) was collected from three different ecosystems in the central part of the Netherlands [34], i.e. arable fields, beech forests and natural grasslands developed on abandoned arable fields.…”

Section: Methodsmentioning

confidence: 99%

“…The arable fields were planted with maize ( Zea mays L.), the dominant plant species in the forests was beech ( Fagus syslvatica L.) and the natural grasslands were dominated by grasses such as common bent ( Agrostis capillaris L.), tufted grass ( Holcus lanatus L.) and forbs such as narrow-leave plantain ( Plantago lanceolata L.) [34]. For each ecosystem type, we collected soils from four separate sites that were about 1 km apart, representing four ecosystem replicates [34]. In the laboratory, fresh soil from each plot was sieved (4 mm) and homogenized, removing fine roots and other plant debris.…”

Section: Methodsmentioning

confidence: 99%

Effect of the amount of organic trigger compounds, nitrogen and soil microbial biomass on the magnitude of priming of soil organic matter

et al. 2019

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Priming effects (PEs) are defined as short-term changes in the turnover of soil organic matter (SOM) caused by the addition of easily degradable organic compounds to the soil. PEs are ubiquitous but the direction (acceleration or retardation of SOM decomposition) and magnitude are not easy to predict. It has been suggested that the ratio between the amount of added PE-triggering substrate to the size of initial soil microbial biomass is an important factor influencing PEs. However, this is mainly based on comparison of different studies and not on direct experimentation. The aim of the current study is to examine the impact of glucose-to-microbial biomass ratios on PEs for three different ecosystems. We did this by adding three different amounts of 13 C-glucose with or without addition of mineral N (NH 4 NO 3 ) to soils collected from arable lands, grasslands and forests. The addition of 13 C-glucose was equivalent to 15%, 50% and 200% of microbial biomass C. After one month of incubation, glucose had induced positive PEs for almost all the treatments, with differences in magnitude related to the soil origin and the amount of glucose added. For arable and forest soils, the primed C increased with increasing amount of glucose added, whereas for grassland soils this relationship was negative. We found positive correlations between glucose-derived C and primed C and the strength of these correlations was different among the three ecosystems considered. Generally, additions of mineral N next to glucose (C:N = 15:1) had little effect on the flux of substrate-derived C and primed C. Overall, our study does not support the hypothesis that the trigger-substrate to microbial biomass ratio can be an important predictor of PEs. Rather our results indicate that the amount of energy obtained from decomposing trigger substrates is an important factor for the magnitude of PEs.

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Sedge replacement by grasses accelerates litter decomposition and decreases organic matter formation in alpine meadow soils

Mou

Zhao

et al. 2022

Land Degrad Dev

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The dominance of sedges in Tibetan meadows is decreasing with the increasing abundance of grasses, mainly due to anthropogenic activities, nitrogen deposition, and climate warming. We investigated the effects of this vegetation shift on litter decomposition (in the field), mineralization to CO2, and litter carbon (C) incorporation into microorganisms (under laboratory conditions) under sedges and grasses at community and species levels. Litter C incorporation into soil organic carbon (SOC) was estimated using 13C labelling of the vegetation community. After one year of field incubation, a smaller proportion of shoot litter C was lost in sedges than in grasses at the species level and smaller proportions of root C were lost under sedges at community and species levels. Roots decomposed markedly slower than shoots across communities or species under sedges and grasses. Smaller proportions of the shoot and root C from sedges were incorporated into SOC than from grasses, and root C was less incorporated into the SOC than shoot C across communities. Over the 38‐day laboratory incubation, total microbial respiration and assimilation of litter C changed similarly to the C loss between litter types under the field condition. Across community and species levels, litter C loss in the field and incorporation of litter C into microorganisms under laboratory conditions all increased with initial phosphorus content in the litter and decreased with lignin content. Considering greater allocation of photosynthates belowground by sedges than grasses, we demonstrated that the ongoing replacement of sedges by grasses in the vast Tibetan alpine meadows is unfavorable for the maintenance of SOC storage.

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Relationship between home-field advantage of litter decomposition and priming of soil organic matter

Cited by 32 publications

References 70 publications

Litter quality and site characteristics interact to affect the response of priming effect to temperature in subtropical forests

Litter quality and site characteristics interact to affect the response of priming effect to temperature in subtropical forests

Effect of the amount of organic trigger compounds, nitrogen and soil microbial biomass on the magnitude of priming of soil organic matter

Sedge replacement by grasses accelerates litter decomposition and decreases organic matter formation in alpine meadow soils

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