Maria De Nobili

Maria De Nobili
University of Udine | UNIUD · Department of Agroenvironmental, Food and Animal Sciences

MSc PhD

About

154
Publications
36,575
Reads
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4,644
Citations
Additional affiliations
November 2003 - present
University of Udine
Position
  • Ordinary professor
November 1991 - November 1992
University of Padova
Position
  • Professor (Associate)
November 1982 - October 1991
University of Udine
Position
  • Lecturer
Education
June 1996 - November 2002
University of Nottingham
Field of study
  • Soil Science
November 1973 - October 1978
University of Padova
Field of study
  • Chemistry

Publications

Publications (154)
Article
Full-text available
Soil salinization caused by sea level rise threatens coastal agricultural soils and geochemically important wetlands worldwide. The aim of this review is to outline expected changes in soil biological activity by discussing the combined effects of salt stress and flooding on plants productivity and soil microbial communities, which determine conseq...
Article
In saltmarsh soils, humic acids (HA) are involved in geochemically important redox processes. The electron donating capacity (EDC) of HA depends on their molecular structure, but also reflects the intensity of biological reduction in tidal environments. We examined twelve soils in three saltmarshes located along a geographical gradient and applied...
Article
Full-text available
Two soils contaminated with potentially toxic metals (PTMs) contrasting in pH and mineralogy were remediated with CaEDTA, and changes in soil organic matter (SOM) composition were investigated. Previous studies showed no significant loss of SOM from CaEDTA-treated soils, but the results of our study reflected significant decreases (from 46 to 49%)...
Article
Full-text available
Exposure to oxygen and aerobic biological activity during drought periods alters the availability of terminal electron acceptors (TEA) in the peat catotelm layer. We investigated the changes in the electrochemical and chemical characteristics of humic acids (HA) induced by subjecting air-dried sphagnum peat to biological oxidation or reduction duri...
Article
The N2-fixing shrub Amorpha fruticosa L. is rapidly spreading in the dry riparian natural grasslands of Europe, altering ecosystem functions and depleting plant diversity. Alteration of the N cycle represents the key factor involved in invasions by N2-fixing plants with cascading effects on plant species richness. We hypothesized that A. fruticosa...
Article
Humic substances (HS) possess redox active groups covering a wide range of potentials and are used by facultative anaerobic microorganisms as electron acceptors. To serve as suitable electron shuttles for anaerobic respiration, HS should be able to re-oxidize relatively quickly to prevent polarization of the surrounding medium. Mediated electrochem...
Preprint
Two soils contaminated with potentially toxic metals (PTMs) contrasting in pH and mineralogy were remediated with CaEDTA, and changes in soil organic matter (SOM) composition were investigated. Previous studies showed no significant loss of SOM from CaEDTA-treated soils, but the results of our study reflected significant decreases (from 46 to 49%)...
Article
Full-text available
Climate change has strong impacts on soil conservation and agricultural productivity, with severe consequences on smallholders in developing countries, but virtually no research has been carried out so far on this issue. Therefore, it is necessary to foster the implementation of participatory projects to help communities deal with new difficulties....
Article
The “Soil Continuum Model” questions the occurrence of any independent natural process of secondary synthesis that generates compounds structurally distinct from plant or microbial metabolites. This review shows that a vast volume of interdisciplinary scientific evidence supports the formation of relevant non-pre-existing complex molecules exhibiti...
Article
Full-text available
At the end of October 2018, a storm of unprecedented strength severely damaged the forests of the eastern sector of the Italian Alps. The affected forest area covers 42,500 ha. The president of one of the damaged regions asked for help from the University of Padua. After eight months of discussion, the authors of this article wrote a consensus text...
Article
Full-text available
At the end of October 2018, a storm of unprecedented strength severely damaged the forests of the eastern sector of the Italian Alps. The affected forest area covers 42,500 ha. The president of one of the damaged regions asked for help from the University of Padua. After eight months of discussion, the authors of this article wrote a consensus text...
Article
Soil microbial biomass (SMB-C) is one of the most frequently used parameters for the assessment of soil quality, but no threshold values have ever been proposed. We challenged the problem of a reliable numerical estimation of the SMB-C based on the knowledge of physicochemical soil properties. The aim was to evaluate artificial neural network (ANN)...
Article
Full-text available
Subsequent to the increasing diffusion of wastewater treatment, particularly in high-and middle-income countries, the sewage sludge generated should be treated and valorised in an ecological and economic way, thus contributing to the circular economy. In this study, the monitoring of Heavy Metals (HM), Extractable Organic Halogens (EOX) and Linear...
Article
Full-text available
Questions Understanding the mechanisms underlying the impacts of exotic plant invasions is a central issue in plant ecology. Considering the invasion process, any alteration of the nutrient cycle is of fundamental importance. We hypothesized that the woody N‐fixing invasive Amorpha fruticosa is indirectly depleting plant diversity by altering ecosy...
Article
Full-text available
Purpose: Soil salinization is one of the most severe abiotic stresses which threaten sustainable agriculture in arid and semi-arid regions including Morocco. The application of organic amendments like composts to saline soils has been confirmed to alleviate soil salinity stress. The present work aims to study the effect of humic acids (HA), as one...
Article
Full-text available
Purpose Humic acids (HA) have several environmental roles, but are particularly important in aquatic environments, being recognized as redox active natural organic matter (NOM) components. We examined NOM in recent sediments of a low-energy coastal environment which is free from inputs of dissolved terrestrial HA as their solubility is suppressed b...
Article
Full-text available
Conversion of conventional farming (CF) to organic farming (OF) is claimed to allow a sustainable management of soil resources, but information on changes induced on dissolved organic matter (DOM) are scarce. Among DOM components, dissolved humic substances (DHS) were shown to possess stimulatory effects on plant growth. DHS were isolated from CF a...
Technical Report
Full-text available
The forests of 473 Italian Alpine municipalities were severely damaged by a strong wind at the end of October 2018. The affected forest area covers 42,500 ha. The president of one of the damaged regions asked for help from the TESAF department of the University of Padua. 26 international scientists (listed: 25; anonymous: 1) responded to the appeal...
Article
Full-text available
The aptness of the ∑SEM/AVS (Simultaneously Extracted Metals/Acid Volatile Sulfides) index to ascertain environmental risk from potentially toxic elements in calcareous saltmarsh soils was tested using Structural Equation Modelling. This technique allows to detect both direct and indirect relationships among AVS, SEM and other soil variables, repre...
Presentation
In natural wetlands and submerged soils, humic acids (HA) are involved in numerous redox processes (Keller et al., 2009). HA can be used by facultative anaerobic bacteria as terminal electron acceptors during anaerobic respiration (Lovley et al., 1996) and upon re-aeration, they can donate electrons to oxygen (Klupfel et al., 2014). In addition to...
Presentation
The reliability of the extraction of humic substances by alkaline extractants has been frequently questioned in the past decades and was once again challenged in a recent paper (Lehmann and Kleber, 2015). Because of the importance of humic C and its widespread use as a parameter for the characterization of NOM and of a wide range of organic amendme...
Article
Full-text available
Monitoring of biogenic sulfide is important as AVS represent a reactive pool responsible for immobilization of toxic metals. We propose a new sulfide paper sensor method (SPS) for semi‐quantitative determination of AVS in which developed color is compared to a reference chart. The method was validated against the ion‐selective microelectrode and th...
Article
Full-text available
Saltmarshes are recognised worldwide to be among the most complex ecosystems, where several environmental factors concur to sustain their fragile functioning. Among them, soil–plant interactions are pivotal but often overlooked. The aim of this work was to use a structural equation modelling (SEM) approach to get new insight into soil–plant interac...
Article
Full-text available
Born in Trento (Italy, 2003) for the purpose of standardising vocabulary and units of humus form classification, after publishing a first synthetic classification e-book (Zanella et al. 2011) they do not cover all site conditions in the European area. Although having basic concepts and general lines, the European (and North American, Canadian, the...
Article
Full-text available
The processes of formation and evolution of Histic humipedons are related to the soil/water dynamics. In a first part of the paper we present diagnostic features and horizons necessary for describing the intergrade humipedons existing between Histic and Hydro humipedons. Called Epihistic (“superficial” Histic), these humipedons are very common and...
Article
Full-text available
Terms and concepts have been defined in Humusica 1, article 1 and the functioning of humus systems has been discussed in Humusica 1, article 2. Here a short overview of the matter, showing humus systems in their environment, is provided for beginners, before making field investigations. The present work is intended as a part of the field manual (HU...
Article
Full-text available
Soils formed in tidal and subtidal environments often do not show sufficient accumulation of undecomposed plant tissues to be classified as Histosols. In this article we present a first attempt of morpho-functional classification of aquatic humus, a revision of the terminology and of the diagnostic features employed by pedologists in the descriptio...
Article
Full-text available
This paper presents the specific terms of vocabulary and diagnostic horizons necessary for a field classification of submerged Histic humipedons (peats, moors). It is simply an exposition of definitions placed side by side with photographic samples, with rather practical interest. The knowledge reported here is mandatory for people wanting to use t...
Article
Full-text available
This paper corresponds to an illustrated field key of classification of Histic humipedon. Vocabulary and diagnostic horizon definitions are in Humusica 2, article 9. The process of classification can follow a step by step way or simply be realised choosing the right diagnostic horizon on a table and composing the whole profile as in a game of const...
Article
Full-text available
The article is structured in six sections. A first portion is dedicated to the state of the art concerning climatic change and agriculture. Internet available IPCC maps and cartographic documents made by scientific Centres of research were used for illustrating forecasted climatic changes. In Sections 2 and 3, bibliographic evidences were collected...
Article
Full-text available
Some soil scientists or biologists (14, one preferring anonymity) answered the three following questions: 1. Why is organic food better (tastes better, is healthier, richer in nutrients, contains less pesticide, etc.) than food produced with hydroponic or intensive farming techniques? 2. In a humipedon, are soil functioning, biodiversity and carbon...
Conference Paper
Under anaerobic conditions, humic acids (HA) may act as terminal electron acceptors, allowing facultative anaerobic bacteria to obtain energy from anaerobic respiration. Structural and electrochemical changes due to biological oxidation and reduction were investigated on HA extracted from a peat sample, incubated under controlled aerobic and anaero...
Presentation
This work examines the possibility to use spectroscopic characteristics of humic substances as tracers of the degree of biological transformation occurred during storage of sewage sludge in thickening beds. Chlorinated compounds, linear alkylbenzensulphonates (LAS) and emerging contaminants may undergo significant degradation during sludge storage...
Poster
Under anaerobic conditions, humic acids (HA) may act as terminal electron acceptors, allowing facultative anaerobic bacteria to obtain energy from anaerobic respiration. Structural and electrochemical changes due to biological oxidation and reduction were investigated on HA extracted from a peat sample, incubated under controlled aerobic and anaero...
Poster
Two soils of contrasting pH and mineralogy (acid and calcareous) strongly polluted by Pb and Zn were remediated by soil washing with EDTA and cultivated after the treatment together with their respective non treated control soils. Humic and fulvic acids were extracted sequentially by NaOH (free fraction) and NaOH+Na2P2O7 (bound fraction), before qu...
Article
full paper can be downloaded here: https://authors.elsevier.com/c/1Vo3T3JGmQvIL3 Many ecosystem processes in forest ecosystems are influenced by tree species richness and tree functional diversity (FD). Several studies, mainly in grasslands, have already underlined a positive effect of plant species richness on soil carbon (C) storage, but evidenc...
Article
Full-text available
Purpose The relationship between soil properties and plant communities was investigated in a saltmarsh of the Grado and Marano lagoon (northern Italy), where hydrology and micromorphology strongly influence the features of the ecosystem. A multidisciplinary approach was used to assess the change of soil properties and plant communities in relation...
Article
Full-text available
Swine livestock farms represent potential sources of emissions of gaseous compounds and odors in relation to slurry management, manure treatment, and particularly, storage. Electrolytic treatments of slurries were proposed to solve this pressing problem. Electrolytic treatment consists of the passage of a low electric current through the liquid pha...
Article
Full-text available
Additions of organic amendments to soil not only compensate for decreased soil C, but also contribute to energy requirements for conserving biological activity levels. The soil microbial biomass displays some highly conserved, and possibly unique, characteristics that do not permit a classic interpretation of microbial metabolic parameter data. The...
Article
Full-text available
Biochar has a charcoal polycyclic aromatic structure which allows its long half-life in soil, making it an ideal tool for C sequestration and for adsorption of organic pollutants, but at the same time raises concerns about possible adverse impacts on soil biota. Two biochars were tested under laboratory-controlled conditions on Eisenia andrei earth...
Conference Paper
Natural organic matter and humic acids fractions from sediments sampled along a transect from the mainland (river) to the center of a Northern Adriatic lagoon (open lagoon and a fish farm) were analysed for their elemental composition and carbon isotope composition (δ 13 C), and characterized by Fourier transform infrared spectroscopy (FT-IR). Both...
Presentation
Natural organic matter and humic acids fractions from sediments sampled along a transect from the mainland (river) to the center of a Northern Adriatic lagoon (open lagoon and a fish farm) were analysed for their elemental composition and carbon isotope composition (δ 13 C), and characterized by Fourier transform infrared spectroscopy (FT-IR). Both...
Article
Full-text available
The flooding regime of saltmarshes strongly affects organic matter mineralisation, representing a unique situation where oxygen diffusion is either impeded by submersion or favoured by retreating water in regular cycles within the same day. Decomposition of Limonium vulgare Mill. residues in saltmarsh soils was evaluated measuring CO2 and CH4 emiss...
Article
Full-text available
The introduction of the “subaqueous soils” into the international classification system of the Soil Taxonomy (2010) gives a possibility to soil scientists to use the pedogenetic approach to investigate coastal soils in view of resource protection and valorization. Coastal areas, in fact, are complex and fragile ecosystems whose ecological value is...
Article
Full-text available
Land application of sewage sludge (SS) is a convenient way of disposal compared to incineration or landfill, but can result in accumulation of potentially toxic elements (PTE) in agricultural soils. The environmental risk associated with PTE accumulation in soils that received several SS applications depends mainly on soil pH and SS treatments. We...
Article
Iron (Fe) sources available for plants in the rhizospheric solution are mainly a mixture of complexes between Fe and organic ligands, including phytosiderophores (PS) and water-extractable humic substances (WEHS). In comparison to the other Fe-sources, Fe-WEHS are more efficiently used by plants and experimental evidences show that Fe-translocation...
Article
Full-text available
The suspended matter discharged by the Isonzo river has carried over, for centuries, heavily contaminated mine spoils from the Idrija mercury mining site (Slovenija). A frequently flooded area at the confluence of the Isonzo and Torre rivers was chosen for a preliminary study on the effects of long term mercury pollution on soil biological activiti...
Article
Full-text available
Biochar has been widely proposed as a soil amendment, with reports of benefits to soil physical, chemical and biological properties. To quantify the changes in soil microbial biomass and to understand the mechanisms involved, two biochars were prepared at 350 °C (BC350) and 700 °C (BC700) from Miscanthus giganteus, a C4 plant, naturally enriched wi...
Article
The use of appropriate amendments derived from two phase olive mill wastes (TPOMW) can represent a suitable option to maintain and restore C levels in agricultural soils under Mediterranean climates. We evaluated soil organic matter stabilisation pathways among different humic pools in a Calcaric Cambisol amended with 2% (40 Mg ha− 1) of TPOMW comp...
Chapter
Full-text available
Building on the extremely successful and popular Russell's Soil Conditions and Plant Growth, Wiley-Blackwell is pleased to publish this completely revised and updated edition of the soil science classic. Covering all aspects of the interactions between plant and soil, Peter Gregory and Stephen Nortcliff, along with their team of internationally-kno...
Article
Full-text available
The aim of this study was to measure and compare methane oxidation rates of arable and grassland soils that received 7.5tha(-1)y(-1) of noncontaminated aerobically treated sewage sludge for ten years. Arable soils showed generally lower methane oxidation rates (from 6 to 15∗10(-3)h(-1)) than grassland soils (from 26 to 33∗10(3)h(-1)). Oxidation rat...
Article
Effects of long term Hg contamination and addition of Hg2 + on soil CH4 oxidation were investigated in laboratory incubation experiments. Non‐contaminated soils had CH4 oxidation rate constants (k) between 5.2 and 24.5 × 10− 3 h− 1, whereas Hg contaminated soils had rates ranging from 2.4 to 8.0 × 10− 3 h− 1. Specific oxidation rates (qK = k / Cbio...