Field soil aggregate stability kit for soil quality and rangeland health evaluations

Herrick, Jeffrey E.; Whitford, Walter G.; Soyza, Amrita G. de; Zee, Justin W. Van; Havstad, Kris M.; Seybold, Cathy A.; Walton, Maranda L.

doi:10.1016/s0341-8162(00)00173-9

Cited by 197 publications

(124 citation statements)

References 7 publications

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“…Tillage is expected to impose various stresses to soil microbial communities through destruction of soil structure, causing erosion, and leading to enormous losses in soil organic C and nutrients (53)(54)(55). In particular, soil aggregation, which is critical for key resources (air, water, and nutrients) and provides a relatively stable accommodation for microbes (56), is decreased by tillage. Thus, tillage is expected to decrease stochasticity in soil communities.…”

Section: Consistency Between Experimental Results and Theoretical Prementioning

confidence: 99%

Stochasticity, succession, and environmental perturbations in a fluidic ecosystem

Zhou

Deng

Zhang

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

661

555

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Unraveling the drivers of community structure and succession in response to environmental change is a central goal in ecology. Although the mechanisms shaping community structure have been intensively examined, those controlling ecological succession remain elusive. To understand the relative importance of stochastic and deterministic processes in mediating microbial community succession, a unique framework composed of four different cases was developed for fluidic and nonfluidic ecosystems. The framework was then tested for one fluidic ecosystem: a groundwater system perturbed by adding emulsified vegetable oil (EVO) for uranium immobilization. Our results revealed that groundwater microbial community diverged substantially away from the initial community after EVO amendment and eventually converged to a new community state, which was closely clustered with its initial state. However, their composition and structure were significantly different from each other. Null model analysis indicated that both deterministic and stochastic processes played important roles in controlling the assembly and succession of the groundwater microbial community, but their relative importance was time dependent. Additionally, consistent with the proposed conceptual framework but contradictory to conventional wisdom, the community succession responding to EVO amendment was primarily controlled by stochastic rather than deterministic processes. During the middle phase of the succession, the roles of stochastic processes in controlling community composition increased substantially, ranging from 81.3% to 92.0%. Finally, there are limited successional studies available to support different cases in the conceptual framework, but further well-replicated explicit time-series experiments are needed to understand the relative importance of deterministic and stochastic processes in controlling community succession.community assembly | disturbances | metagenomics | GeoChip | remediation

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Section: Consistency Between Experimental Results and Theoretical Prementioning

confidence: 99%

Stochasticity, succession, and environmental perturbations in a fluidic ecosystem

Zhou

Deng

Zhang

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

661

555

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“…It is closely related to soil organic matter composition [117], biological activity [118], infiltration capacity [119], and erosion resistance [120]. The micro-sieve method developed by [121] is a simple, field-ready assessment of aggregate stability that can provide detailed information on management-induced changes to soil structure.…”

Section: Physical Indicatorsmentioning

confidence: 99%

The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

et al. 2015

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Abstract:The primary cause of soil degradation in sub-Saharan Africa (SSA) is expansion and intensification of agriculture in efforts to feed its growing population. Effective solutions will support resilient systems, and must cut across agricultural, environmental, and socioeconomic objectives. While many studies compare and contrast the effects of different management practices on soil properties, soil degradation can only be evaluated within a specific temporal and spatial context using multiple indicators. The extent and rate of soil degradation in SSA is still under debate as there are no reliable data, just gross estimates. Nevertheless, certain soils are losing their ability to provide food and essential ecosystem services, and we know that soil fertility depletion is the primary cause. We synthesize data from studies that examined degradation in SSA at broad spatial and temporal scales and quantified multiple soil degradation indicators, and we found clear indications of degradation across multiple indicators. However, different indicators have different trajectories-pH and cation exchange capacity tend to decline linearly, and soil organic carbon and yields non-linearly. Future research should focus on how soil degradation in SSA leads to changes in ecosystem services, and how to manage these soils now and in the future. OPEN ACCESS

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“…Soil quality is an important factor for sustaining plant and animal productivity, maintaining/ enhancing water and air quality, and supports the life of people on the earth, now and in the future. Traditional strategies for improving soil quality includes increasing physical properties like aggregation or optimizing particle size distribution (Herrick et al 2001), lowering salinity (Lawton, 2015;Kalliola et al, 2016), adjusting extremely low or high pH to more neutral values, increasing plant coverage (Laird and Chang, 2013) and enhancing microbial community activity in the rhizosphere (Lamers et al, 2012;Wang et al, 2013).…”

Section: Hydrocarbons (Hc) and Soil Qualitymentioning

confidence: 99%

Importance of soil physical characteristics for petroleum hydrocarbons phytoremediation: A review

Hajabbasi¹

2016

Afr. J. Environ. Sci. Technol.

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Petroleum and petrochemical hydrocarbons for some places are serious sources of environmental pollutants. To remediate these contaminants, phytoremediation, a relatively low cost and an environmental friendly technique is recommended more widely, now more than ever. Successful and effective applying of hydrocarbons phytoremediation depends mainly on the soil and plant types and conditions and microbial activities and the interactions between these three factors. Although for the last several decades, various plant and organism's species for the phytoremediation processes have been extensively studied, evaluating and characterizing soil properties, as an important objective for sustainable remediation and land use management, which had negligible considerations. An ideal soil for phytoremediation should have proper physical, chemical and biological characteristics to let the plant grow well and produce biomass as high as possible. It also should provide favorable conditions for microbial activities to perform efficient remediation. Soil physical characteristics such as texture, structure, water status and aeration are important factors affecting the microbial activities and consequently the degree of remediation potential. A better understanding of soil physical properties in conjunction with proper soil-plant-microbe management could be exploited to enhance the remediation of hydrocarbon contaminated soils and thus sustainable healthy environment.

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Field soil aggregate stability kit for soil quality and rangeland health evaluations

Cited by 197 publications

References 7 publications

Stochasticity, succession, and environmental perturbations in a fluidic ecosystem

Stochasticity, succession, and environmental perturbations in a fluidic ecosystem

The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

Importance of soil physical characteristics for petroleum hydrocarbons phytoremediation: A review

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