CALL US

+86 17838360708

soillitter mixing enhances decomposition rates in a

soillitter mixing enhances decomposition rates in a

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

We quantified the effects of soil-litter mixing on leaf litter decomposition by placing litterbags in areas where grass cover was reduced 0, 50, 75, and 100%, and in un-manipulated response plots ...

get price

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

COS 20-1: Soil-litter mixing enhances decomposition rates in a Chihuahuan Desert grassland Daniel B. Hewins , New Mexico State University, Heather L. Throop, New Mexico State University, Steven R. Archer, University of Arizona, and Gregory S. Okin, UCLA.

get price

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,

get price

Soil-Litter Mixing Accelerates Decomposition in a ...

Several field studies have shown a significant correlation between the extent of soil-litter mixing and the rate of litter decomposition (Throop and Archer, 2007; Hewins et al., 2013), but were ...

get price

Soil-litter mixing promotes decomposition and soil ...

  Apr 15, 2020  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. A factorial experiment in a shrub

get price

Sunlight and Soil–Litter Mixing: Drivers of Litter ...

mixing interact to influence decomposition appears critical to understanding litter decomposition in drylands and resolving seemingly conflicting views on this process. Here we examine the dual roles of sunlight and soil–litter mixing as drivers of litter decomposition in dryland ecosystems. Specifically, we focus on the known

get price

Soil–litter mixing and microbial activity mediate ...

/ Soil–litter mixing and microbial activity mediate decomposition and soil aggregate formation in a sandy shrub-invaded Chihuahuan Desert grassland. In: Plant Ecology . 2017 ;

get price

Soil—Litter Mixing Accelerates Decomposition in a ...

(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. To assess the role of SLM, litterbags were deployed in the Chihuahuan Desert and interrelationships between vegetation structure, SLM, and rates of decomposition were quantified.

get price

Soil-Litter Mixing Accelerates Decomposition in a ...

Several field studies have shown a significant correlation between the extent of soil-litter mixing and the rate of litter decomposition (Throop and Archer, 2007; Hewins et al., 2013), but were ...

get price

Soil–litter mixing and microbial activity mediate ...

/ Soil–litter mixing and microbial activity mediate decomposition and soil aggregate formation in a sandy shrub-invaded Chihuahuan Desert grassland. In: Plant Ecology . 2017 ;

get price

Soil moisture and soil-litter mixing effects on surface ...

May 01, 2014  It has been suggested that soil-litter mixing could enhance litter decomposition via several mechanisms, including 1) acting as a vector for microbial colonization of litter surfaces, 2) buffering litter from temperature or moisture extremes, thereby extending the temporal window of opportunity for microbially-mediated decomposition, or 3 ...

get price

Soil–litter mixing and microbial activity mediate ...

2012; Hewins and Throop 2016). Although this soil– litter mixing (SLM) has been shown to accelerate decomposition, the underlying biological mechanisms of this driver are poorly understood. SLM purportedly enhances biological activity in the litter layer by mitigating abiotic constraints on microbial activity (Throop and Archer 2009; Barnes ...

get price

Sunlight and Soil–Litter Mixing: Drivers of Litter ...

mixing interact to influence decomposition appears critical to understanding litter decomposition in drylands and resolving seemingly conflicting views on this process. Here we examine the dual roles of sunlight and soil–litter mixing as drivers of litter decomposition in dryland ecosystems. Specifically, we focus on the known

get price

Soil–litter mixing and microbial activity mediate ...

Fingerprint Dive into the research topics of 'Soil–litter mixing and microbial activity mediate decomposition and soil aggregate formation in a sandy shrub-invaded Chihuahuan Desert grassland'. Together they form a unique fingerprint. Chihuahuan Desert Agriculture Biology

get price

(PDF) Sunlight and Soil–Litter Mixing: Drivers of Litter ...

Although the magnitudes and proposed Sunlight and Soil–Litter Mixing: Drivers of Litter Decomposition in Drylands 275 mechanisms of photodegradation are variable and poorly understood (King et al. 2012; Song et al. 2013a), it may be an important, historically overlooked driver that could potentially explain, at least in part, why traditional ...

get price

Decomposition in Drylands: Soil Erosion and UV ...

Decomposition, the breakdown of dead plant and animal material, is a fundamental ecosystem process that affects long-term soil fertility and carbon storage. Most of what is known about decomposition is from studies in high rainfall areas, but this knowledge does not translate well to dryland ecosystems.

get price

Non-Native Plant Litter Enhances Soil Carbon Dioxide ...

over the course of a typical invasion. Mixing invasive plant litter with native plant litter of different quality may enhance decomposition of the litter mixture via nutrient transfers between component plant litters, leading to non-additive effects [8–13]. Thus, enhanced decomposition rates of litter mixtures containing

get price

Fire enhances litter decomposition and reduces vegetation ...

Apr 19, 2017  Finally, high rates of soil erosion, occurring in many grasslands due to low vegetative cover (Okin et al. 2015), can accelerate litter decomposition through ‘soil–litter mixing’. Mixing of soil with litter appears to enhance microbial decomposition through microclimate buffering, litter abrasion, and/or enhanced microbial colonization ...

get price

Non-Native Plant Litter Enhances Soil Carbon Dioxide ...

Mar 19, 2014  Notably, exotic plant litter decomposition rate was unchanged but native plant litter decomposition rate was accelerated in mixtures (decay constant k = 0.20 month −1) compared to in isolation (k = 0.10 month −1). On average, every litter type increased soil respiration compared to bare soil from which litter was removed.

get price

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

Jun 01, 2016  Europe PMC is an archive of life sciences journal literature. Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert

get price

Aggregate Mesquite Litter Chemistry Following Soil-litter ...

Biological mechanisms of soil-litter mixing and decomposition in a semi-arid grassland located with the Nutrient and Ecosystem impacts of Aeolian Transport (NEAT) Experiment Abstract: Decomposition models typically under-predict decomposition relative to observed rates in drylands.

get price

Soil-Litter Mixing Accelerates Decomposition in a ...

Decomposition models typically under-predict decomposition relative to observed rates in drylands. This discrepancy indicates a significant gap in our mechanistic understanding of carbon and nutrient cycling in these systems. ... photodegradation and soil-litter mixing; SLM) may be important in drylands, and their exclusion may, in part, be ...

get price

Pulse frequency and soil-litter mixing alter the control ...

Soil-litter mixing consistently increased decomposition, with greatest relative increase (+194%) under the driest conditions. Collectively, our results highlight the need to consider precipitation at finer temporal scale and incorporate soil-litter mixing as key driver of decomposition in drylands.

get price

(PDF) Sunlight and Soil–Litter Mixing: Drivers of Litter ...

Although the magnitudes and proposed Sunlight and Soil–Litter Mixing: Drivers of Litter Decomposition in Drylands 275 mechanisms of photodegradation are variable and poorly understood (King et al. 2012; Song et al. 2013a), it may be an important, historically overlooked driver that could potentially explain, at least in part, why traditional ...

get price

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

Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert ... 150 years, has the potential to alter the redistribution of soil and soil resources by wind and water. This may affect decomposition via soil-litter mixing (SLM ...

get price

Soil moisture and soil-litter mixing effects on surface ...

May 01, 2014  Here, we tested how soil-litter mixing and soil moisture interact to influence rates of litter decomposition in a controlled environment. Foliar litter of two plant species (a grass [Eragrostis lehmanniana] and a shrub [Prosopis velutina]) was incubated for 32 weeks in a factorial combination of soil-litter mixing (none, light, and complete ...

get price

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

Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert Author links open overlay panel Daniel B. Hewins Heather L. Throop 1

get price

Pulse frequency and soil‐litter mixing alter the control ...

Jun 19, 2017  A notable characteristic of drylands is the high spatial heterogeneity of plant cover and large areas of bare ground, typically leading to high rates of soil erosion. Soil erosion and subsequent deposition can mix decomposing litter with soil (“soil‐litter mixing”), accelerating decomposition (Throop and Archer 2007, Hewins et al. 2013).

get price

[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.

get price

Pulse frequency and soil‐litter mixing alter the control ...

Pulse frequency and soil-litter mixing alter the control of cumulative precipitation over litter decomposition FRANC OIS-XAVIER JOLY, 1,3 KELSEY L. KURUPAS,2 AND HEATHER L. THROOP 1 1School of Earth and Space Exploration and School of Life Sciences, Arizona State University, Tempe, Arizona 85287 USA 2Department of Biology, New Mexico State University, Las Cruces, New Mexico

get price

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

Jun 01, 2016  Europe PMC is an archive of life sciences journal literature. Leaf litter decomposition is rapidly enhanced by the co-occurrence of monsoon rainfall and soil-litter mixing across a gradient of coppice dune development in the Chihuahuan Desert

get price

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).

get price

Precipitation pulse size and frequency controls on dryland ...

Drylands are an important component of the global carbon (C) cycle, accounting for 40% of the land area and 20% of the soil organic C globally. Litter decomposition is a key biogeochemical process, controlling C and nutrient cycling. While simple decomposition models successfully predict decomposition rates in many systems based on climate variables, there is a disconnect between the modeled ...

get price

Accounting for photodegradation dramatically improves ...

2015b), but enhance biotic decomposition via the production of labile photodegraded material (e.g., Gallo et al. 2006, Foereid et al. 2011, Baker and Allison 2015, Wang et al. 2015). Another process that may drive dryland decomposition is soil–litter mixing, which may have both positive and negative impacts on mass loss.

get price

Soil moisture and soil-litter mixing effects on surface ...

The lack of strong soil-litter mixing effects on decomposition under the moderate and relatively constant environmental conditions of this study is in contrast to results from field studies and suggests the importance of soil-litter mixing may be magnified when the fluctuations and extremes in temperature, radiant energy and moisture regimes ...

get price