Stefano GomarascaUniversity of Milan | UNIMI · Department of Environmental Science and Policy
Stefano Gomarasca
Dr.
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32
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Introduction
Publications
Publications (32)
Spillage from oil refineries, pipelines, and service stations consistently leads to soil, food and groundwater contamination. Bacterial-assisted phytoremediation is a non-invasive and sustainable solution to eliminate or decrease the concentration of xenobiotic contaminants in the environment. In the present study, a protected area interested by a...
Functional diversity has proven to be more responsive than traditional taxonomic diversity to alterations for a wide set of communities, especially in aquatic ecosystems. Habitat alterations are among the most relevant causes of biodiversity loss in freshwater ecosystems, nevertheless their effect on functional diversity has been scarcely investiga...
Time-dependent geolocalized analysis of pollution data allows to better understand their dynamics over time and could suggest strategies to restore a good ecological status of contaminated area. This research analyzes concentrations of pollutants in surface waters and groundwater monitored by the Regional Environment Protection Agency of Lombardy f...
Quantifying synergistic environmental effects in water contamination is still an open issue. Here, we have analyzed geolocalized data of pollutants recorded in 2018 in surface and groundwater of Lombardy, one of the areas with the highest agricultural production rates, not only in Italy, but also in Europe. Both herbicides and insecticides are pres...
VR experience during an event at Centrale dell'Acqua di Milano, Italy. Credit: MM The global Sustainable Development Goals are strongly communicated to citizens. Although the media are using classic or innovative communication processes no appraise was established on the effectiveness of these. Here for the first time, we assess the effectiveness o...
Freshwater fish communities are impacted by multiple pressures, determining loss of functional diversity and redundancy. Our aim was to disentangle the roles and relevancies of different pressures in shaping fish communities in small streams of the Po plain (North Italy). Long term trend (1998–2018) of functional diversity of 31 fish communities wa...
The shape of the O2H prototype is optimized to improve the H 2 0 production by microalgae's photosynthesis. The microalgae are hosted in a curved double plexiglass layer that is open on the upper part. This opening allows to spread in the air the oxygen produced by the micro-algae. In order to have an internal circulation some air is pumped from be...
In this study, the environmental impact of strawberry production in Italy and Switzerland was evaluated using
the Life Cycle Assessment (LCA) approach. The main differences between the two countries are the cultivation
practices: crop cycle duration (1 year in Switzerland and 2 or 3 years in Italy), soil management and cultivation
in open and prote...
Landscape connectivity analysis is a major tool in supporting biodiversity conservation. Several methodologies have been developed to tackle it by following two main paths. The first path exploits graph approaches and models focal nodes' connections on a resistance/conductance matrix depending on focal species' movement potential. The second path c...
Tropical and subtropical rangeland systems provide core ecosystem services for the welfare of human populations that rely on readiness and quality of forage resources. However, forage species are still widely overlooked by molecular biology studies. In the present study, we employ 366 AFLP markers to provide the first description of the genetic lan...
In the context of the European Water Framework Directive (2000/60), aquatic macrophytes have become important elements for ascribing the correct ecological value to water systems. Callitriche includes macrophyte species which are widespread and particularly sensitive to environmental cues. High plasticity and morphological variability of these plan...
Themeda triandra Forssk. is one of the most widespread grasses in the dry to mesic prairie ecosystems of Africa, Asia and Australia. It is of particular interest due to its high value as a forage species for wildlife and livestock, and its potential use in landscaping practices. In this review we have collated information from the many studies that...
ABSTRACT The research carried out during these years has "photographed" in detail the situation of the Maggiore Lake shores highlighting favorable factors and problems related to the usability and ecological status of the coasts. We evaluated many aspects of the banks, such as the degree of wildness, of urbanization, the walkability and the coastli...
ABSTRACT In this research we studied carefully macrophytes and benthic macroinvertebrates of sublittoral and littoral zone of Maggiore Lake. Overall, the results show a good development of macrophytic coverage with 68% of the vegetated shoreline. We found 20 species, 17 phanerophytes and 3 Characee. The most common are Najas marina, Myriophyllum sp...
ABSTRACT In this research we studied carefully macrophytes and benthic macroinvertebrates of sublittoral and littoral zone of Maggiore Lake. Overall, the results show a good development of macrophytic coverage with 68% of the vegetated shoreline. We found 20 species, 17 phanerophytes and 3 Characee. The most common are Najas marina, Myriophyllum sp...
Giant reed (Arundo donax) is a promising energy crop of the Mediterranean areas. It has long been associated with humans and has been cultivated in Asia, southern Europe, North Africa and the Middle East for thousands of years. It is a perennial herbaceous plant (Poaceae) found in grasslands and wetlands throughout a wide range of climatic zones. A...
Infrared thermography can be used as a tool for evaluating antitranspirant treatment through the measurement of evaporative fluxes. The aim of this work is to compare the leaf surface temperatures of plant treated with chitosan (CHT), a potential stomatal-closing antitranspirant, with temperatures of leaves treated with the commercially available a...
Chitosan (CHT) is a natural compound able to activate the plant own defence machinery against pathogen attacks and to reduce both transpiration and stomatal opening when applied as foliar spray. The data here reported show that CHT-induced antitranspirant activity in bean plants is mediated by ABA, whose level raised over threefold in treated leave...
The aim of this research is to define a new Macrophyte Index relevant in the context of the Po Valley. The application of biotic indexes, as the macrophyte ones, is required by both the Italian and the European law to provide an adequate classification of freshwaters, in association with physical–chemical and hydromorphological data. At the same ti...
In this study we investigated the acute exposure of the aquatic macrophyte Callitriche obtusangula to the herbicide oxadiazon (Ronstar). The toxic effects on C. obtusangula were evaluated, 24h after exposure, by assessing visible necrotic leaf lesions and, 12 h after exposure, via analyses of dead cells and hydrogen peroxide (H2O2) deposits localiz...
Plant plasma membrane H+-ATPases (PM H+-ATPase) are essential for establishing a proton electrochemical gradient across the cell plasma membrane. Their regulation is poorly understood, except for the role of 14-3-3 proteins, which relieve autoinhibition from the C-terminal domain. A novel protein interacting with this domain was recently identified...
The Po river plain (northern Italy) is delimited to two mountain ridges, the Alps and the Apennines. It hosts peculiar lowland
man-modified springs, locally known as “fontanili”, which originate from natural resurgences occurring along the alluvial
fans of the main watercourses, namely in the transition zone from the higher to lower plain which is...
The antiviral activity induced by chitosan (CHT), and the mechanisms underlying it, were studied in a tobacco-tobacco necrosis necrovirus (TNV) pathosystem. Treatments with 0.1% CHT enhanced tobacco inducible defenses against TNV, reducing significantly the virus-induced necrotic lesions (in a range from 32% to 83%). In planta, this resistance was...
In Italy, Valeriana wallrothii Kreyer, is widespread in northern and central plain and mountain regions. In the last years, a decrease in population number and size was evidenced. This reduction could lead to a loss of genetic richness and compromise species survival. In this work, to estimate genetic structure and variation of eight populations wi...
Circumnutation is an oscillating movement of a growing plant organ that is believed to result from an endogenous rhythmic process intrinsic to growth. Circumnutating organs, as they extend, describe a helical trace. In Arabidopsis thaliana (L.) Heynh. circumnutation is particularly evident in primary roots and occurs, as in most plants, in a right-...
Ion transport in plants continues to be a subject of great theoretical and practical relevance. Much of our information concerning the nature of ion transport comes from analyses of the kinetics of in vivo ion uptake coupled with electrophysiological and biochemical studies aimed at understanding the physicochemical properties of membrane transport...
Because fusicoccin (FC) has the the capacity to promote solute uptake, a selective procedure for isolating mutants of Arabidopsis thaliana with a reduced response to the toxin has been developed. The procedure is based on the incubation of A. thaliana seedlings in a solution containing the cation Paraquat (Pq) at a concentration that per se does no...
There is a need to develop bioindicators to evaluate the quality of low order irrigational rural system. For this pourpose, we evaluates the usefulness of freshwater macrophytes. We relates species abundances and community richness to chemical and physical water features in the northern river Po lowland. We observed higher biodiversity of macrophyt...
Questions
Questions (7)
Is there any researcher (paleontologist) who is able to recognize this fossil? Found in Argentina on sandstone banks, probable on tertiary sector. Il is 20 to 30 cm long
Is anyone able to tell me the species of this algae? It is a Phormidium that grows in rich hydrogen sulphide thermal water at around 60 ° C.
Thanks
Stefano
Attached photographs
I have a question.
I have to grow some fresh water microalgae. With the CO2 injecting I will have pH displacements in the grow solution. I want to use a buffer as a phosphate source (K2HPO4 - KH2PO4 - pH 7). Is it a stupid idea? I imagine that the algae will absorb part of the two salts altering their concentration, thus altering their buffer power. Do you have any suggestions?
Hello
I would like to have an help to classify two small unicellular green algae
Algae A (i can not understand what it is ...!!!)
Small algae that attaches a lot to the glass walls of flask, but also lives as planktonic in the presence of air insufflation.
Dimensions 10-15 * 3-5 microns
Alga B
Probably Scenedesmus obliquus
Planktonic, it is visible as single or, at the maximum, as two cells, apparently has no granularity or estroflexion on the wall.
Dimension 10-12 * 8-10 microns
Thanks for your help!!!
