Beatrice Giannetta
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View article: Evolution of soil organic matter pools during Martian regolith terraforming, with a focus on organo-Fe (oxyhydr)oxide interactions
Evolution of soil organic matter pools during Martian regolith terraforming, with a focus on organo-Fe (oxyhydr)oxide interactions Open
The poor fertility of Martian regolith, due to its lack of organic matter (OM) and nitrogen (N), limits its suitability as a plant substrate. While compost amendment enhances short-term fertility, the mechanisms underlying long-term OM sta…
View article: Time and climate roles in driving soil carbon distribution and stability in particulate and mineral-associated organic matter pools
Time and climate roles in driving soil carbon distribution and stability in particulate and mineral-associated organic matter pools Open
Understanding the accumulation and stability of soil organic matter (SOM) pools as a function of time (i.e., soil age) and climate (i.e., precipitation and temperature) represents a crucial challenge. This study aims at investigating the e…
View article: Fe-dependent structural evolution of peralkaline soda aluminosilicate glasses: Iron speciation vs. glass transition
Fe-dependent structural evolution of peralkaline soda aluminosilicate glasses: Iron speciation vs. glass transition Open
The incorporation of iron into peralkaline silicate glasses significantly impacts their structural and thermal properties. Here we investigate how addition of iron influences the network connectivity (short- and medium-range order) and gla…
View article: Soil organic matter dynamics and stability: Climate vs. time
Soil organic matter dynamics and stability: Climate vs. time Open
Climate and time are among the most important factors driving soil organic carbon (SOC) stability and accrual in mineral soils; however, their relative importance on SOC dynamics is still unclear. Therefore, understanding how these factors…
View article: Fire simulation effects on the transformation of iron minerals in alpine soils
Fire simulation effects on the transformation of iron minerals in alpine soils Open
Heat-induced changes in topsoil iron (Fe) species triggered by the relatively low temperatures (Ts) produced by wildfires (200–300 °C) have not been fully elucidated. Changes in the chemistry of Fe minerals can produce cascading impacts on…
View article: Evidence of Potential Organo-Mineral Interactions during the First Stage of Mars Terraforming
Evidence of Potential Organo-Mineral Interactions during the First Stage of Mars Terraforming Open
Future space missions to Mars will depend on the development of bioregenerative life support systems. Mars regolith contains most of the nutrients needed for plant growth, but not organic matter (OM). Although Mars simulants have been deep…
View article: Heating response patterns of Alpine soils: from a plot-scale to lab experiments.
Heating response patterns of Alpine soils: from a plot-scale to lab experiments. Open
Wildfires play the role of ecosystem shapers in the majority of terrestrial biomes. Nowadays, their regimes are changing as a consequence of land abandonment and climate change. After-fire dynamics are widely studied in North America and M…
View article: Dynamics and stability of soil organic matter: climate vs. time
Dynamics and stability of soil organic matter: climate vs. time Open
This study aims to investigate the mechanisms of soil organic carbon (SOC) sequestration with depth as a function of time and climate. Two chronosequences located along a climate gradient were investigated. The first chronosequence (ADI) c…
View article: Influence of solid vs. liquid digestate application on soil organic matter accrual and stabilization, and microbial communities evolution
Influence of solid vs. liquid digestate application on soil organic matter accrual and stabilization, and microbial communities evolution Open
The decline of soil organic matter (SOM) as well as the depletion of micro and macronutrients are among the most serious threats facing many agricultural soils of the world. Consequently, in many countries, soil amendments are increasingly…
View article: Formation of organo-Fe (oxyhydr)oxide interactions during the first stages of Martian regolith simulant terraforming
Formation of organo-Fe (oxyhydr)oxide interactions during the first stages of Martian regolith simulant terraforming Open
Future long-term space missions beyond Low Earth Orbit (e.g., to Mars) depend on the development of bioregenerative life support systems able to produce food crops based on in situ resource utilization. Mars regolith potentially contains m…
View article: Response of soil organic matter fractions to biochar and organic fertilizers – Results from a nine-year field experiment
Response of soil organic matter fractions to biochar and organic fertilizers – Results from a nine-year field experiment Open
We investigated the effects of biochar (BC) at 0 and 20 t ha-1, combined with two organic fertilizers (municipal solid waste compost, MC, and sewage sludge, SS), on soil organic matter (SOM) in a 9-year field experiment. To capture the pro…
View article: Soil organic matter accumulation in vineyards as a function of cultivar and parent material
Soil organic matter accumulation in vineyards as a function of cultivar and parent material Open
<p>The aim of this work was to understand of how parent material and plant cultivar interactively control soil organic matter (SOM) accumulation and stabilization in vineyards.</p><p>Three experimental vineyards located i…
View article: Soil organic carbon sequestration and dynamics along a chronosequence on fluvial terraces
Soil organic carbon sequestration and dynamics along a chronosequence on fluvial terraces Open
<p>The aim of this work is to investigate the mechanisms of soil organic carbon (SOC) sequestration as a function of time and depth. A chronosequence, consisting of two orders (T2 and T1) of the Adige river terraces (Veneto region, N…
View article: Estimating the viscosity of volcanic and binary melts from the vibrational properties of their parental glasses
Estimating the viscosity of volcanic and binary melts from the vibrational properties of their parental glasses Open
<p>The knowledge of the viscosity of magmas as a function of melt composition and temperature is central in the numerical modeling of the magmatic dynamics and eruptive scenarios. Recent studies suggest that the measure of the viscos…
View article: Iron speciation in soil size fractions under different land uses
Iron speciation in soil size fractions under different land uses Open
Iron (Fe) (oxyhydr)oxides represent a significant phase for the organic carbon (OC) stabilization. Due to their high surface areas, short-range-ordered Fe minerals, like ferrihydrite, show a higher ability to stabilize OC than crystalline …
View article: Iron speciation throughout a karst pedosedimentary record in South of Italy
Iron speciation throughout a karst pedosedimentary record in South of Italy Open
<p>A 3-m thick sediment was found in a limestone mine located in the Apulia region (south of Italy), at a depth of 25-30 m from the current ground level. Samples from 5 layers were investigated by X-ray Absorption Near Edge Spectrosc…
View article: Coupling X-ray Absorption and Raman Spectroscopies to Characterize Iron Species in a Karst Pedosedimentary Record
Coupling X-ray Absorption and Raman Spectroscopies to Characterize Iron Species in a Karst Pedosedimentary Record Open
The identification of iron (Fe) forms throughout a sediment sequence was investigated by X-ray Absorption Near Edge Spectroscopy (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) at the Fe K-edge, paired with Raman micro-spectro…
View article: Redox-driven changes in the distribution of Fe minerals between aggregate-size classes in illuvial and elluvial horizons of a hydromorphic soil
Redox-driven changes in the distribution of Fe minerals between aggregate-size classes in illuvial and elluvial horizons of a hydromorphic soil Open
<div> <p><span>Paddy soils experience long-term redox alternations affecting the interactions between the biogeochemical cycling of iron (Fe) and carbon (C). Although the higher soil organic matter (SOM) accumulation rate…
View article: How are mineral and organic phases regulating burning-induced soil water repellency? Unravelling the crucial dynamics occurring in the Alps even at moderate fire intensities.
How are mineral and organic phases regulating burning-induced soil water repellency? Unravelling the crucial dynamics occurring in the Alps even at moderate fire intensities. Open
<p>Wildfires play the role of ecosystem shapers in the majority of terrestrial biomes, altering canopy and litter cover and imposing strong modifications on soils. Organic matter (OM) content and composition, mineralogy, pH, aggregat…
View article: Iron Speciation in Organic Matter Fractions Isolated from Soils Amended with Biochar and Organic Fertilizers
Iron Speciation in Organic Matter Fractions Isolated from Soils Amended with Biochar and Organic Fertilizers Open
The role and distribution of iron (Fe) species in physical soil fractions have received remarkably little attention in field-scale systems. Here, we identify and quantify the Fe phases into two fractions (fine sand, FSa, and fine silt and …
View article: Fe(II)-catalyzed transformation of Fe (hydr)oxides in particle-size soil organic matter fractions from amended agricultural soils
Fe(II)-catalyzed transformation of Fe (hydr)oxides in particle-size soil organic matter fractions from amended agricultural soils Open
<p>Redox-driven changes in Fe crystallinity and speciation may affect soil organic matter (SOM) stabilization and carbon (C) turnover, with consequent influence on global terrestrial soil organic carbon (SOC) cycling.<span>&…
View article: Redox-driven colloidal mobility and its effects on carbon cycling in temperate paddy soils
Redox-driven colloidal mobility and its effects on carbon cycling in temperate paddy soils Open
<p>Rice paddy soils are known to represent a large proportion of global terrestrial carbon (C) stocks (ca.10 Pg), accumulating organic C in the topsoil due to cultivation under submerged conditions. Apart from the limited mineralizat…