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... Standard laboratory tests to describe the impact of stressors (most notably: chemicals) on organisms offer a good compromise between feasibility and outcome, i.e., they should be reproducible and provide robust results. However, these tests may underestimate the potential effects of prolonged exposures, particularly for persistent contaminants. Within the last years, we have observed an increase i ...
soil; soil acidification; soil amendments, etc ; Gemmatimonas; Streptomyces; bacterial communities; community structure; corn; field experimentation; nitrates; nitrification; soil bacteria; soil ecology; sucrose alpha-glucosidase; wheat; Show all 15 Subjects
Abstract:
... Excessive N fertilization causes the deterioration of soil microbiome. It is therefore imperative to explore the response of the microbial community in excessively N-fertilized soil to reduce subsequent N supply (RCN) and organic fertilization (OF). Hence, this study used an excessively N-fertilized plot to conduct field experiment of wheat and maize rotation over four years to assess the effects ...
soil; soil degradation; soil remediation, etc ; 2-chlorophenol; catalytic activity; electron paramagnetic resonance spectroscopy; oxidants; oxidation; pH; siderite; soil treatment; China; Show all 12 Subjects
Abstract:
... Natural siderite (FeCO₃), simulated synthetic siderite and nZVI/FeCO₃ composite were used as green and easily available iron-based catalysts in peroxydisulfate activation for remediating 2-chlorophenol as the target contaminant and this technique can effectively degrade organic pollutants in the soil. The key reaction parameters such as catalysts dosage, oxidant concentration and pH, were investig ...
soil ecology; soil microorganisms; soil respiration, etc ; Acidobacteria; Actinobacteria; afforestation; alpha-Proteobacteria; carbon; community structure; eroded soils; fungi; microbial communities; soil water; China; Show all 14 Subjects
Abstract:
... Soil moisture (SM) is one of the most limited factors on the Loess Plateau, but its effects on the microbial community and respiration are still unclear. To investigate the effects of stepwise wetting and constant SM on the soil microbial community and respiration rates, eroded soil under afforestation on the Loess Plateau was examined. The soils were sampled and incubated with constant gravimetri ...
... Investigators are debating on the positive and negative priming effects of biochar on native soil organic carbon (SOC), which is largely attributed to the technical barrier of identifying biochar contribution to the apparently measured SOC or mineralized CO₂. We combined benzene polycarboxylic acids (BPCAs) molecular biomarkers and soil particle density fractionation to identify biochar contributi ...
soil; soil carbon; soil microorganisms, etc ; carbon; community structure; environment; microbial communities; nitrogen; prediction; prokaryotic cells; Show all 10 Subjects
Abstract:
... Global nitrogen deposition has increased significantly in recent years. At present, research on the effects of different amounts and types of nitrogen deposition on soil microorganisms in coastal wetlands is scarce. In this study, based on 7 years of simulated nitrogen deposition at multiple levels (low, medium, high) and of multiple types (NH₄NO₃, NH₄Cl, KNO₃), the effects of different nitrogen d ...
... Soil respiration, the second largest CO₂ flux in terrestrial ecosystems, involves the microbial respiration of litter from aboveground sources, belowground litter and root respiration, from rhizodeposition. In the subtropical forests of the Ailao Mountain, a chamber with automated CO₂ efflux was set up with two treatments: a control treatment with litterfall to measure the total soil respiration ( ...
soil fauna; soil quality; soil temperature, etc ; Berberis; Crataegus; canopy; ecosystems; flora; land cover; microclimate; semiarid zones; shrublands; soil water; topsoil; Africa; Europe; Iran; North America; Show all 18 Subjects
Abstract:
... Crataegus and Berberis shrublands are natively distributed in Asia, Europe, North America and Africa. Despite the widespread distribution of these two species, the effect of pure and mixed canopy composition of these species on bioindicators of soil quality has received little attention. In the current research, the effect of pure [Crataegus (PC) and Berberis (PB)] and mixed [Crataegus and Berberi ...
soil ecology; soil organic carbon; soil pH, etc ; adsorption; clay fraction; energy content; glucose; meta-analysis; microbial carbon; nitrogen; Show all 10 Subjects
Abstract:
... Soil organic matter (SOM) decomposition and stabilisation are largely affected by microbial carbon use efficiency (CUE), which is defined as the proportion of substrate carbon (C) uptake that microbes use for growth. Microbial CUE varies due to substrate quality and availability differences, but this may also depend on soil properties, such as pH, soil organic C (SOC) and clay content. We conducte ...
... Despite recent advances in the ecology of lichens from a community perspective, much remains unknown at the species level particularly in arid regions. In this context, the current study investigated the differential effects of five lichen species dominating South Mediterranean arid ecosystem (Diploschistes diacapsis (Ach.) Lumbsch, Squamarina cartilaginea (With.) P. James, Fulgensia bracteata (Ho ...
... Forest soil harbors diverse microbial communities with decisive roles in ecosystem processes. Vegetation shift from needleleaf to broadleaf species is occurring across the globe due to climate change and anthropogenic activities, potentially change forest soil microbial communities and C cycle. However, our knowledge on the impact of such vegetation shift on soil microbial community and activities ...
soil ecology; soil microorganisms; soil organic matter, etc ; clay; cropland; ecotones; grasslands; land use; sand; silt; total nitrogen; total phosphorus; China; Show all 13 Subjects
Abstract:
... Studies of community assembly and species interactions are updating our view of the mechanisms underpinning microbial diversity in single-type ecosystems, yet they are rarely conducted in ecotones, such as the agro-pastoral ecotone of northern China (APEN) undergoing frequent land-use conversions. In this study, soil microbial assembly processes and co-occurrence patterns were examined in differen ...
soil; soil bacteria; soil organic carbon, etc ; bacterial communities; bioavailability; community structure; genes; heavy metals; nitrogen; pollution; remediation; species diversity; total nitrogen; Show all 13 Subjects
Abstract:
... Heavy metal pollution caused by mining activities can be harmful to soil microbiota, which are highly sensitive to heavy metal stress. This study aimed to investigate the response of soil bacterial communities to varying levels of heavy metal pollution in four types of habitats (i.e., tailing, remediation, natural recovery, and undisturbed areas) at an abandoned polymetallic mine by high-throughpu ...
soil; soil fauna, etc ; Collembola; biodegradability; microplastics; polybutylene succinate; polyethylene; polylactic acid; polypropylenes; Show all 9 Subjects
Abstract:
... Although biodegradable plastics are considered an environmentally-friendly alternative to conventional plastics, the effects of biodegradable microplastics (BMPs) on soil faunal communities are poorly understood, especially under field conditions. Here, we investigated the loading impacts of two conventional low-density polyethylene (LDPE) and polypropylene (PP) MPs as well as two biodegradable po ...
soil; soil organic matter, etc ; adsorbents; adsorption; cadmium; clay; lead; pH; quantitative analysis; spectroscopy; Show all 10 Subjects
Abstract:
... Cadmium (Cd) and lead (Pb) are two of the most common elements found in contaminated sites. The behavior of specific metals in the soil may be affected by other metals because of the competition for adsorption sites. In this study, adsorption experiments after chemical extraction, multi-surface models, and advanced spectroscopy technology were jointly used to explain the adsorption mechanism of Cd ...
soil fertility; soil pollution, etc ; agricultural soils; composts; environment; light microscopy; microplastics; topsoil; wastes; Show all 9 Subjects
Abstract:
... Compost application is a widely recommended agricultural practice to improve soil fertility. As almost all compost is likely polluted with plastic we hypothesize that compost application is a major input pathway for microplastics (MPs) into agricultural soil. To attribute the plastic load of soil to compost application, we investigated MPs in topsoil (0–30 cm) of a controlled, long-term fertilizer ...
... The combined action of alien plants invasion and fire occurrence can strongly alter local biodiversity and soil functions especially in the Mediterranean area. In this context, the goal of the study was to assess the effects of the invasive black locust (Robinia pseudoacacia L.) spread on soil characteristics, especially soil microbial community responses, in some Mediterranean shrublands and pine ...
soil; soil erosion; soil organic carbon, etc ; adaptive management; almonds; ecosystems; energy; environment; food security; models; rangelands; sustainable land management; watershed management; watersheds; Iran; Show all 15 Subjects
Abstract:
... Aside from the many services that soil provides, it also stores water and makes it available to crops, which is critical for food security. However, the necessity of further studies for overcoming the existing gap in relation to the role of soil in the water, energy, and food nexus system has been preoccupying the experts and specialists around the world for some time. In this sense, the balance b ...
soil enzymes; soil microorganisms; soil water, etc ; air drying; climate; climate change; community structure; environment; enzyme activity; heavy metals; oxidoreductases; pollution; stress response; toxicity; China; Show all 15 Subjects
Abstract:
... The intense drying-rewetting cycle due to climate change can affect soil microbial community composition and function, resulting in long-term consequences for belowground carbon and nutrient dynamics. However, how climatic and edaphic factors influence the responses of enzymes to rewetting and their responses to additional perturbation (e.g., heavy metal pollution) after the drying-rewetting histo ...
... Due to higher microbial activity and diversity, organic farming serves as a sustainable alternative in preventing several soil-borne plant diseases. However, there are limited studies that have shown direct relationship between soil bacterial composition and its effect on disease suppressive potential under different farming systems. Thus, the objective of the study was to understand the effect of ...