soillitter mixing accelerates decomposition and may

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 accelerates decomposition and facilitates soil aggregation in a shrub-invaded Sonoran Desert grassland Eva Levi1†, Steve Archer1, Craig Rasmussen 1, Heather Throop 2, and Dan Hewins2 1University of Arizona, 2New Mexico State University †[email protected] Figure 4.

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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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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 ...

Oct 26, 2012  10%  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. Recent research suggests that certain drivers of decomposition that are often not explicitly incorporated into models (for example,

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Soil—Litter Mixing Accelerates Decomposition in a ...

of abiotic drivers of decomposition in drylands terns in response to disturbance (for example, live (reviewed in Throop and Archer 2009). One such stock grazing, fire) and high annual/interannual driver that accelerates decomposition is soil-litter variability in precipitation, mixing (SLM), which is characterized by the burial

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Soil–Litter Mixing Accelerates Decomposition in a ...

Oct 26, 2012  10%  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. Recent research suggests that certain drivers of decomposition that are often not explicitly incorporated into models (for example, photodegradation and soil–litter ...

get price

Soil—Litter Mixing Accelerates Decomposition in a ...

of abiotic drivers of decomposition in drylands terns in response to disturbance (for example, live (reviewed in Throop and Archer 2009). One such stock grazing, fire) and high annual/interannual driver that accelerates decomposition is soil-litter variability in precipitation, mixing (SLM), which is characterized by the burial

get price

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

"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

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 promotes decomposition and soil ...

Apr 15, 2020  10%  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

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

Soil–litter mixing may also buffer litter and resident microbes from the high temperatures and desiccation that commonly occur in drylands (Moorhead and Reynolds 1991). These effects could enhance decomposition by extending windows of opportunity for microbial activity following rainfall events (e.g., Cable et al. 2011).

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

Jun 19, 2017  Soil erosion and subsequent deposition can mix decomposing litter with soil (“soil‐litter mixing”), accelerating decomposition (Throop and Archer 2007, Hewins et al. 2013). Soil‐litter mixing (SLM) may buffer decomposers from high temperature and desiccation, thereby expanding the windows of opportunity for decomposer activity following ...

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Detritivore conversion of litter into faeces accelerates ...

Nov 11, 2020  These include the mixing of organic matter and minerals in faeces due to detritivores ingesting mineral soil particles along with plant litter; the burial of faeces (active or passive), which may ...

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

However, under field conditions in drylands where soil-litter mixing occurs and accelerates decomposition, the mechanisms involved with soil-litter mixing effects are ambiguous. Potential mechanisms may include some combination of enhanced microbial colonization of litter, physical abrasion of litter surfaces, and buffering of litter and its ...

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

Soil moisture and soil-litter mixing effects on surface litter decomposition: A controlled environment assessment Hanna Leea,*, Jessica Fitzgeraldb, Daniel B. Hewinsb,1, Rebecca L. McCulleyc, Steven R. Archerd, Thom Rahne, Heather L. Throopb aClimate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO 80307, USA b Department of Biology, New Mexico State ...

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Accounting for photodegradation dramatically improves ...

Jul 28, 2017  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). Mixing may also enhance decomposition by promoting microbial litter colonization, physically abrading litter, and buffering litter from extreme heat and ...

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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

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

Soil–litter mixing may also buffer litter and resident microbes from the high temperatures and desiccation that commonly occur in drylands (Moorhead and Reynolds 1991). These effects could enhance decomposition by extending windows of opportunity for microbial activity following rainfall events (e.g., Cable et al. 2011).

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

May 01, 2014  However, under field conditions in drylands where soil-litter mixing occurs and accelerates decomposition, the mechanisms involved with soil-litter mixing effects are ambiguous. Potential mechanisms may include some combination of enhanced microbial colonization of litter, physical abrasion of litter surfaces, and buffering of litter and its ...

get price

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

Jun 19, 2017  Soil erosion and subsequent deposition can mix decomposing litter with soil (“soil‐litter mixing”), accelerating decomposition (Throop and Archer 2007, Hewins et al. 2013). Soil‐litter mixing (SLM) may buffer decomposers from high temperature and desiccation, thereby expanding the windows of opportunity for decomposer activity following ...

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.

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Determining a new dryland decomposition input term ...

roles and importance of water and wind in soil-litter mixing in drylands •A. Austin and L. Vivanco. Plant litter decomposition in a semi-arid ecosystem controlled by photodegredation. (2006). Nature 442: 555-558 •Daniel B. Hewins, Steve R. Archer, et. al. Soil-litter mixing accelerates decomposition in a Chihuahuan Grassland. (2012).

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Detritivore conversion of litter into faeces accelerates ...

Nov 11, 2020  These include the mixing of organic matter and minerals in faeces due to detritivores ingesting mineral soil particles along with plant litter; the burial of faeces (active or passive), which may ...

get price

Accounting for photodegradation dramatically improves ...

Jul 28, 2017  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). Mixing may also enhance decomposition by promoting microbial litter colonization, physically abrading litter, and buffering litter from extreme heat and ...

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Effects of disturbance and ecosystem on decomposition ...

Jun 01, 2003  Soil–Litter Mixing Accelerates Decomposition in a Chihuahuan Desert Grassland. Hewins DB, Archer SR, Okin GS, McCulley RL, Throop HL. Ecosystems., 16(2):183-195, 01 Mar 2013 Cited by: 5 articles AGR: IND500635217

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Functional diversity of decomposers modulates litter ...

Nov 01, 2020  In addition, how climate factors may influence the litter-mixing and habitat-alteration effects of invaders and thereby change litter decomposition is unknown, given that climatic conditions (e.g. temperature and moisture) exert a strong influence on litter decomposition (Bradford et al., 2016).

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Specific leaf area predicts dryland litter decomposition ...

Sep 15, 2017  Barnes et al. found that litter-soil mixing could decrease photodegradation of leaf litters, while Lee et al. suggested that there was no strong soil-litter mixing effect on decomposition. We cannot exclude the possibility that soil-litter mixing decreased litter photodegradation in the two surface litter treatments in this study, especially ...

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

Mar 19, 2014  Litter decomposition is a fundamental ecosystem process in which breakdown and decay of plant detritus releases carbon and nutrients. Invasive exotic plants may produce litter that differs from native plant litter in quality and quantity. Such differences may impact litter decomposition and soil respiration in ways that depend on whether exotic and native plant litters decompose in mixtures.

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Daniel Hewins Rhode Island College

Soil-litter mixing and microbial activity mediate decomposition and soil aggregate formation in a sandy shrub-invaded Chihuahuan Desert grassland. ... Soil–Litter Mixing Accelerates Decomposition in a Chihuahuan Desert Grassland. ... Flexible N uptake and assimilation mechanisms may

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Temperature and precipitation controls over leaf‐ and ...

Nov 11, 2011  Abstract Conversion of grasslands to woodlands may alter the sensitivity of CO2 exchange of individual plants and entire ecosystems to air

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