Articles tagged with Soils
A new study reveals how climate change has enabled Sesarma reticulatum to thrive in southern salt marshes, dramatically altering ecosystem dynamics and clearing grasses that hold the marshes together. This has led to increased rates of creek formation and changes in interactions between predators and prey species.
A new study estimates that nearly a ton of lead dust settled within a kilometer of the Notre Dame cathedral after the 2019 fire. The study found significantly higher lead levels in areas downwind of the fire, exceeding France's limit of 300 milligrams per kilogram of soil.
A team of scientists investigated an unusual wetland soil in California, discovering its peculiar properties that misled initial classification. By analyzing color, water content, vegetation, and chemical composition, they applied a new method to accurately classify the soil as hydric, crucial for conservation.
Researchers analyzed medieval and modern case studies to identify restrictive soil and geologic conditions for tunneling. They found arid areas with low permanent water tables are most susceptible to successful tunneling, recommending monitoring for sound and vibrations to disrupt smugglers.
New research from San Diego State University reveals that spring snowmelt in the Arctic triggers fresh carbon dioxide production at higher rates than previously assumed. The study found that cold thaw accounts for nearly half of carbon emissions, offsetting summer uptake by vegetation.
The University of Minnesota has released the first food-grade wheatgrass variety, MN-Clearwater, allowing farmers to grow this beneficial crop. The new variety provides benefits such as reduced soil loss, fewer chemicals entering groundwater systems, and improved carbon storage, making it an attractive option for sustainable agriculture.
A recent study reveals that ancient farmers' use of charcoal to fertilize the soil created a unique ecosystem in the Amazon, boosting biodiversity and supporting plant diversity. The 'dark earth' technique has left a lasting legacy in the region's mature forests.
Research on crop residue management found that no-till and prescribed fire can affect nutrient availability and microbial activity in the soil. While prescribed fire showed some short-term benefits, its long-term influence is still unknown.
Researchers discovered that anaerobic soil disinfestation using diluted ethanol can make phosphorus more available to plants in Andosol-rich soils. The treatment increases the activity of an enzyme called alkaline phosphomonoesterase, making phosphorus more accessible.
Research highlights the importance of soil biodiversity in achieving sustainability goals, including nutrient cycling, food production, and pollution remediation. Soil health is crucial for regulating climate and supporting human well-being, with traditional agricultural practices already leveraging its benefits.
Researchers investigated potassium fertilization effects on pears in a long history of fertilizer use to establish critical levels. Higher K doses resulted in lower ethylene production and respiration rates, extending storage life.
Invasive native rush species are spreading across UK upland farms, threatening local wildlife and the livelihoods of farmers. The study found that rushes can spread by up to 174% in just 13 years, reducing grassland productivity and causing losses for farmers.
A joint project between TU Dresden and UNU-FLORES uses modeling to simulate observed changes in soil structure due to agricultural management, aiming to improve hydrological models. Field experiments showed that tillage had little effect on soil structure over time, while direct sowing improved water retention.
Researchers identified chloro-perfluoro-polyether-carboxylate compounds (ClPFPECAs) in soils across New Jersey, suggesting the use of these compounds as PFAS substitutes. The discovery provides insight into the environmental impact and toxicity of next-generation PFAS substitutes.
A new study reveals significant land-use changes in Bangladesh, driven by biophysical and socioeconomic factors. The research identifies areas where forests have shifted to shrub land and urban areas, highlighting the need for policies to mitigate their impact on climate change.
Root traits respond to soil characteristics, enabling trees to adapt to harsh environments and maximize resource acquisition. The study found that contaminated soils foster shorter roots, which can immobilize toxic elements like arsenic and lead.
A study found that revegetated urban green spaces have more native plant species and greater microbiota diversity, similar to natural environments. This can lead to improved immune function and reduced non-communicable diseases. Urban design principles could be influenced by the environmental microbiome to create healthier public spaces.
Reconstructing the paleoecology of the Paleo-Agulhas Plain reveals a diverse, verdant environment with abundant game and plant species. The lost landscape, which existed around 11,500 years ago, supported megafauna such as giant Cape Buffalo and giraffes.
Researchers developed a two-region soil-gas diffusivity model to characterize aggregated agricultural soils. The model accurately estimates gas diffusion and provides insights into greenhouse gas emissions.
Researchers studied desert soil pores and found they determine water distribution and control a key resource in arid environments. The study's findings suggest that soil texture affects pore formation and reforming after disturbance, highlighting the importance of understanding these soils.
Researchers found that on days with little atmospheric moisture, afternoon rainfall is more likely over wetter soils, while on days with high moisture, it's more likely over drier soils. Warmer morning temperatures also contribute to the likelihood of afternoon rainfall.
A comprehensive analysis of a mountainous region in Southwest China reveals the driving mechanisms behind changes in soil chemical composition and distribution. Human activities like mining disrupt natural processes, affecting land quality and ecosystem health.
Researchers at University of British Columbia discovered that soil silicates can help control bleeding after injury by triggering clotting. The presence of soil in wounds activates a blood protein called coagulation Factor XII, leading to the formation of a plug and limiting blood loss.
Soil microorganisms decompose organic nitrogen, releasing inorganic nitrogen for plant growth. The initial burst of microbial activity after CO2 flush is a key indicator of forthcoming soil nitrogen mineralization.
Researchers at Uppsala University discovered that the plant had likely accumulated antibiotics from contaminated soil, not produced by nature.
Research investigated cover crop biomass production and soil properties in the eastern Great Plains. Early-planted cover crops had minimal effects on soil properties after 4 years, with low biomass production.
A new pterosaur species has been discovered in Morocco, belonging to the tapejarid group and characterized by its large crest and broad wingspan. The discovery is significant as it marks the first time a pterosaur has been found on African soil.
Researchers have discovered that certain plant materials can help store more carbon in soils and reduce erosion. Using two-step experiments with biomass crops, they found that miscanthus and willow performed better than sorghum in storing long-term carbon, making sustainable farming on peatlands possible.
Researchers from the University of Sheffield found that plants in Peak District grasslands share key nutrients to co-exist, leading to high levels of plant diversity. This sharing is known as resource partitioning, allowing different types of phosphorus compounds to be used by each plant.
Researchers found that salmon-derived nutrients decrease over time but are retained in soils, supporting microbial and plant growth. The study revealed contrasting nutrient cycling pathways between two soil types, with potential for increased plant growth in the riparian zone.
A new study reveals that soil has a significant role in mitigating climate change, with up to 25% of global potential for natural climate solutions. The research highlights the importance of agroforestry and improved agricultural practices in enhancing soil health and carbon sequestration.
Soil microbes convert ammonium to nitrates using oxygen and diverse processes, making nutrients available to plants. The study highlights the importance of understanding microbial roles in the soil nitrogen cycle, which can inform efficient fertilizer use and mitigate greenhouse gas emissions.
Researchers found that domestication of crops led to a decline in their ability to form symbiotic relationships with beneficial soil microbes. This loss has negative environmental consequences, including increased fertilizer use and pollution. Reintroducing genes from wild relatives could help restore these traits.
Researchers from diverse fields collaborate to understand plant-environment interactions, bridging paleoecology, physiology, ecology, genetics, and more. Key findings reveal how plants leverage their genomes to adapt to abiotic stressors and interact with microbes.
Researchers find freeze-drying method yields more accurate results for measuring soil N reactive gas fluxes and total emissions. This approach could lead to revised understanding of global nitrogen cycle mechanisms.
Researchers found high levels of biological activity in the gaps between oil palm fronds, providing microhabitats for soil creatures. This discovery may help preserve ecosystem functioning and offset damage caused by oil palm agriculture.
A new global analysis shows cover crops universally improve soil microbiome health, increasing microbial abundance, activity, and diversity. Factors such as climate, termination method, and tillage regime also impact the benefits of cover cropping on soil microbes.
A new study by Michigan State University quantifies soil and landscape features and spatial and temporal yield variations in response to climate variability. The research identifies areas within individual fields where yield is unstable, with over one-quarter of corn and soybean cropland in the Midwest experiencing this issue.
A new study examines the impact of warming and increased precipitation on seeds in the Tibetan Plateau's soil seed banks. The research finds that these changes can harm the seeds, affecting their ability to germinate, grow, and survive due to factors such as temperature, moisture levels, and pathogens.
A thick buildup of organic matter on the forest floor can complicate efforts to use prescribed fire as a forest management tool. Controlled burns require specific prescriptions to minimize duff smoldering and prevent mortality of large, older pines and potential ecological consequences below ground.
The National Science Foundation has awarded $8 million in funding to seven research projects studying soil signals to advance sustainable agriculture, climate change and food production. Researchers will develop new methods to capture, communicate and analyze soil processes, including sensors and data tools.
Researchers have developed a new measuring method to detect sulphur-containing arsenic compounds in rice soils, which have not been accounted for in health assessments. The study identifies the need for further research on the formation and transport of these compounds to assess health risks.
Researchers at University of Arizona develop mathematical model to simulate PFAS migration through soil and groundwater. The majority of PFAS accumulate in the soil, where they migrate down slowly, posing a significant risk to human health.
Soil researchers found significant movement of sulfate into subsoils and improved water quality after implementing the Clean Air Act Amendment in 1990. However, soils still exhibit chemical imbalances, indicating a long-term recovery process.
A new study reveals a never-before described natural process in soil that converts nitrogen gases into nitrates through the action of visible and ultraviolet radiation. This finding is crucial for understanding the nitrogen cycle in soil, which affects global sustainability, productivity, and air quality.
Soil pathogens like Pythium ultimum spread more easily under heat and drought stress, causing widespread crop failure. Soils from Scotland are less resistant to these pathogens than those from Hungary.
Researchers discovered that most soil protists consume smaller organisms, while others thrive in tropical soils and are affected by annual precipitation. The study provides new insights into the ecological roles of these single-celled organisms in ecosystems worldwide.
Research by North Carolina State University's Rich McLaughlin team found that tilling and adding amendments to soil can greatly improve infiltration rates, reducing runoff and water pollution. Grasses and wildflowers also showed promise in improving infiltration, with wildflowers potentially providing additional benefits for pollinators.
A recent study found that perovskite solar cells absorb lead from the environment, with lead from these cells being ten times more bioavailable than from other industrial sources. This could have significant implications for the safety of these materials.
A new computational model shows that regular crop rotations switching every other year may not be optimal for maximizing crop yield when threatened by plant pathogens. The analysis identified patterns of crop rotation that maintain soil quality and diminish pathogen load, suggesting a more sustainable approach to agriculture.
The Everglades Agricultural Area is experiencing significant soil subsidence due to climate change, threatening the region's ecosystem and agricultural economy. Researchers recommend practices such as crop rotation with rice and adding plant material back into the soil to mitigate decomposition and increase soil carbon.
The new optical nitrate sensor enables real-time measurement of nitrate levels in the range of tens to hundreds of parts per million, detecting rapidly changing concentrations. It optimizes fertilizer application, reduces water resources pollution, and economizes irrigation.
A recent study published in the Journal of Ecology found that climate change is unlikely to force a northern migration of sugar maples due to soil composition constraints. The research, conducted by Alexis Carteron and colleagues, found that boreal forest soil negatively affects sugar maple survival rates and growth.
Researchers at Kazan University are developing advanced aerial drones with devices such as detectors and special cameras to enhance geological surveys. The goal is to analyze upper strata of rocks, evaluate hydrocarbon potential, and improve forest planning and soil analysis.
The study found that specific components of soil health, such as the abundance and activity of soil animals, affect crop productivity. Measurements of soil invertebrates can inform assessments of soil health. The researchers also discovered that optimizing biotic processes in soil can optimize crop production.
Researchers are exploring how cover crops can enhance the sustainability of star fruit farms in Florida. By incorporating cover crops like sunn hemp and velvet bean into their practices, farmers can improve soil organic matter and reduce the need for synthetic inputs.
A new model predicts that deforestation and small-scale gold mining in the Peruvian Amazon increase mercury levels in local rivers, with effects lasting for decades. The research suggests that policies can be developed to mitigate these impacts and protect public health.
A new Illinois study found that fall-applied anhydrous ammonia may not meet corn's nitrogen needs. The study showed varying uptake efficiency depending on soil type and crop rotation, with richest soils being lower in nitrogen recovery.
Midwest farmers adopting reduced tillage increased corn and soybean yields by 3.3% and 0.74%, respectively, while improving soil health and lowering production costs.
Researchers at the University of Washington found that warmer temperatures can lead to higher concentrations of arsenic in rice grains. The study, presented at the American Geophysical Union's Fall Meeting, suggests that climate change could exacerbate the problem of arsenic-contaminated rice, posing a health risk to consumers.