soillitter mixing promotes decomposition and soil

Soil-litter mixing promotes decomposition and soil ...

Apr 15, 2020  10%  Soil-litter mixing promotes decomposition and soil aggregate formation on contrasting geomorphic surfaces in a shrub-invaded Sonoran Desert grassland. E.M. Levi 1, S.R. Archer 1, H.L. Throop 2,3 C. Rasmussen 4 Plant and Soil

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Soil-litter Mixing Accelerates Decomposition and May ...

Dec 01, 2010  Vegetation cover in drylands can strongly affect soil movement by wind and water. Many dryland systems are currently experiencing declines in grass cover due to livestock grazing and woody plant encroachment and increased soil movement is one consequence of these disturbances. Here, we test the hypothesis that declines in dryland grass cover could indirectly promote litter decomposition

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Soil-litter mixing accelerates decomposition and ...

•Soil-litter mixing was an important driver of decomposition, and varied among vegetation patch types and soil types. •Soil-litter aggregation accompanying soil-litter mixing appears to be a result of fungal hyphae connectingsoil particles and litter, although bacterial exudates presumably play an important, but less readily visible role.

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Soil–Litter Mixing Accelerates Decomposition in a ...

Soil–Litter Mixing Accelerates Decomposition in a Chihuahuan Desert Grassland Daniel B. Hewins,1* Steven R. Archer,2 Gregory S. Okin,3 Rebecca L. McCulley,4 and Heather L. Throop1 1Biology Department, MSC 3AF, New Mexico State University, Las Cruces, New Mexico 88003, USA; 2School of Natural Resources and the Environment, University of Arizona, 325 Bio Sciences East, Tucson,

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Effects of litter mixing on litter decomposition and soil ...

Jun 21, 2019  10%  Litter decomposition is a key process for nutrient cycling in forest ecosystems, and thus for primary production (Berg and McClaugherty 2014; Hickman et al. 2013; Vogt 1991).The litter decomposition process is controlled by climatic and edaphic factors, by the nature of the soil community, and by the quality of the litter (Aerts 1997; Berg and McClaugherty 2014; Gallardo

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The influence of litter mixing on decomposition and soil ...

Mar 01, 2013  Highlights We examine effects of litter mixing on decomposition and soil fauna assemblages. Litter mixing has idiosyncratic effects on decomposition rates during the study. Litter quality is an important determinant of soil fauna community. Litter mixing has weak or not significant effects on soil fauna assemblages. The effect of soil fauna on litter decomposition is not stronger in

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Effects of litter mixing on litter decomposition and soil ...

Jun 21, 2019  Litter decomposition is a key process for nutrient cycling in forest ecosystems, and thus for primary production (Berg and McClaugherty 2014; Hickman et al. 2013; Vogt 1991).The litter decomposition process is controlled by climatic and edaphic factors, by the nature of the soil

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The influence of litter mixing on decomposition and soil ...

Mar 01, 2013  Highlights We examine effects of litter mixing on decomposition and soil fauna assemblages. Litter mixing has idiosyncratic effects on decomposition rates during the study. Litter quality is an important determinant of soil fauna community. Litter mixing has weak or not significant effects on soil fauna assemblages. The effect of soil fauna on litter decomposition is not stronger in

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Soil-litter mixing enhances decomposition rates in a ...

Results suggest that soil-litter mixing is an important driver of leaf litter decomposition in the drylands of southern New Mexico. Soil-litter mixing may be particularly influential on biogeochemical cycling in drylands where increased soil erosion has occurred as a consequence of

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Soil–litter mixing and microbial activity mediate ...

looked decomposition drivers, such as soil–litter mixing (SLM), may account for part of this model-measurement disconnect. We documented SLM and decomposition in relation to the formation of soil-microbial films and microbial extracellular enzyme activity (EEA) in the North American Chihuahuan Desert by placing mesh bags containing shrub

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Soil-Litter Mixing Accelerates Decomposition in a ...

Recent research suggests that certain drivers of decomposition that are often not explicitly incorporated into models (for example, photodegradation and soil-litter mixing; SLM) may be important in drylands, and their exclusion may, in part, be responsible for model under-predictions.

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Soil—Litter Mixing Accelerates Decomposition in a ...

mixing (SLM), which is characterized by the burial of licter by aeolian and fluvial soil* and the sub- Vegetation Change and Decomposition sequent formation of biotic sou films on litter sur faces (hereafter 'soil-litter films') (Throop and Extensive losses of grass

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"Soil-Litter Mixing Accelerates Decomposition in a ...

Recent research suggests that certain drivers of decomposition that are often not explicitly incorporated into models (for example, photodegradation and soil–litter mixing; SLM) may be important in drylands, and their exclusion may, in part, be responsible for model under-predictions.

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[PDF] Soil moisture and soil-litter mixing effects on ...

Abstract Recent studies suggest the long-standing discrepancy between measured and modeled leaf litter decomposition in drylands is, in part, the result of a unique combination of abiotic drivers that include high soil surface temperature and radiant energy levels and soil-litter mixing. Temperature and radiant energy effects on litter decomposition have been widely documented.

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Decomposition in Drylands: Soil Erosion and UV ...

Soil-litter mixing accelerates decomposition and may promote soil aggregate formation in the Chihuahuan Desert; The K-12 standards conundrum: Teaching math science through authentic field research data; Soil-litter mixing accelerates decomposition and facilitates soil aggregation in a shrub-invaded Sonoran Desert grassland

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Leaf litter decomposition is rapidly enhanced by the co ...

Jun 01, 2016  Recent work suggests photodegradation and soil-litter mixing (SLM) are potentially important drivers of decomposition in drylands that may explain, at least in part, the discrepancy between models and measurements (photodegradation reviewed in King et al. 2012; SLM reviewed in Barnes et al. 2015). SLM by wind and water may promote microbial ...

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Aggregate Mesquite Litter Mass Following Soil-litter ...

I hypothesized that reductions in grass cover would promote SLM and accelerate mass loss by improving conditions for microbial decomposition. This study is complete. For more see: Hewins, D. B., S. R. Archer, G. S. Okin, R. L. McCulley, and H. L. Throop. 2013. Soil-litter mixing accelerates decomposition in a Chihuahuan Desert grassland.

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Specific leaf area predicts dryland litter decomposition ...

Sep 15, 2017  Soil movement via water and wind transport could alter relative effects of photodegradative and microbial decomposition in arid desert ecosystems, i.e. elevated decomposition rates of leaf litter resulting from litter-soil mixing caused by unstable soil structure (Barnes, Throop, Hewins, Abbene, Archer, 2012; Lee et al., 2014).

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Soil Coverage Reduces Photodegradation and Promotes the ...

decomposition, whereas others suggest soil-litter mixing controls decomposition. To test the influ-ence of soil coverage on UV photodegradation of litter, we conducted a controlled environment experiment with shrub (Prosopis velutina) leaf litter experiencing two UV levels and three levels of coverage with dry sterile soil. Under these condi-

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Aggregate mesquite litter chemistry following soil-litter ...

Aggregate mesquite litter chemistry following soil-litter mixing and decomposition in a semi-arid grassland from 2010-2012 . The effect of vegetation structure on soil-litter mixing (SLM) and decomposition was explicitly tested in a litterbag experiment on a Chihuahuan Desert grassland site where vegetation cover was manipulated to simulate the ...

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Soil—Litter Mixing Accelerates Decomposition in a ...

mixing (SLM), which is characterized by the burial of licter by aeolian and fluvial soil* and the sub- Vegetation Change and Decomposition sequent formation of biotic sou films on litter sur faces (hereafter 'soil-litter films') (Throop and Extensive losses of grass

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Soil deposition and UV radiation influence litter ...

to influence decomposition and hence, numerous soil properties. Figure 3. Aerial view of the Santa Rita Experimental Range illustrating contrast between shrub-invaded and grass-dominated soils. Photo: Bill Cable, 2003. Results Results Conclusions and Implications •Soil-litter mixing and UV exposure were important drivers of decomposition.

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"Soil-Litter Mixing Accelerates Decomposition in a ...

Recent research suggests that certain drivers of decomposition that are often not explicitly incorporated into models (for example, photodegradation and soil–litter mixing; SLM) may be important in drylands, and their exclusion may, in part, be responsible for model under-predictions.

get price

Decomposition in Drylands: Soil Erosion and UV ...

Soil-litter mixing accelerates decomposition and may promote soil aggregate formation in the Chihuahuan Desert; The K-12 standards conundrum: Teaching math science through authentic field research data; Soil-litter mixing accelerates decomposition and facilitates soil aggregation in a shrub-invaded Sonoran Desert grassland

get price

Leaf litter decomposition is rapidly enhanced by the co ...

Jun 01, 2016  Recent work suggests photodegradation and soil-litter mixing (SLM) are potentially important drivers of decomposition in drylands that may explain, at least in part, the discrepancy between models and measurements (photodegradation reviewed in King et al. 2012; SLM reviewed in Barnes et al. 2015). SLM by wind and water may promote microbial ...

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DNB, Katalog der Deutschen Nationalbibliothek

Soil-litter mixing promotes decomposition and soil aggregate formation on contrasting geomorphic surfaces in a shrub-invaded Sonoran Desert grassland / by E.M. Levi, S.R. Archer, H.L. Throop, C. Rasmussen Person(en)

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Specific leaf area predicts dryland litter decomposition ...

Sep 15, 2017  Soil movement via water and wind transport could alter relative effects of photodegradative and microbial decomposition in arid desert ecosystems, i.e. elevated decomposition rates of leaf litter resulting from litter-soil mixing caused by unstable soil structure (Barnes, Throop, Hewins, Abbene, Archer, 2012; Lee et al., 2014).

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Soil Coverage Reduces Photodegradation and Promotes the ...

decomposition, whereas others suggest soil-litter mixing controls decomposition. To test the influ-ence of soil coverage on UV photodegradation of litter, we conducted a controlled environment experiment with shrub (Prosopis velutina) leaf litter experiencing two UV levels and three levels of coverage with dry sterile soil. Under these condi-

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Accounting for photodegradation dramatically improves ...

Jul 28, 2017  Another process that may drive dryland decomposition is soil–litter mixing, which may have both positive and negative impacts on mass loss. Soil–litter mixing may shade litter from sunlight, thereby reducing photodegradation, but may also shield decomposers from UV radiation, enhancing biotic decomposition (Barnes et al. 2012).

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Effects of litter source on the dynamics of particulate ...

E.M. Levi, S.R. Archer, H.L. Throop, C. Rasmussen, Soil-litter mixing promotes decomposition and soil aggregate formation on contrasting geomorphic surfaces in a shrub-invaded Sonoran Desert grassland, Plant and Soil, 10.1007/s11104-020-04508-1, (2020).

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Subject: "Sonoran Desert" - PubAg Search Results

AIMS: Shrub encroachment into grasslands alters organic carbon pools and patterns of decomposition. Here, we quantify the influence of plant life-form patches occuring on contrasting geomorphic substrates on (1) soil-litter mixing (SLM) and litter decomposition and 2) the development of soil aggregates and soil-microbial films on litter.

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High night‐time humidity and dissolved organic carbon ...

Feb 22, 2017  Although no apparent soil accumulation was observed on the surface of litterbags during the experiment, ash content of soil surface litter was higher than that of standing litter especially during the late decomposition stage (Fig. S7), indicating that a small amount of soil was mixed in the litter. Soil-litter mixing effect might diminish ...

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Fire enhances litter decomposition and reduces vegetation ...

For both litter types, decomposition was lower for unburned trees than for unburned grass or shrubs, perhaps due to greater soil–litter mixing and solar radiation away from tree canopies. Fire enhanced litter mass loss under trees, making decomposition rates similarly rapid in burned patches of all three vegetation cover types.

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Modeling the effects of litter stoichiometry and soil ...

Microbial decomposition of plant litter is a crucial process for the land carbon (C) cycle, as it directly controls the partitioning of litter C between CO 2 released to the atmosphere versus the formation of new soil organic matter (SOM). Land surface models used to study the C cycle rarely considered flexibility in the decomposer C use efficiency (CUE d) defined by the fraction of decomposed ...

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