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AiRabbi: qualità chimica e biologica dell’aria in Val di Rabbi: relazione tecnica dell’attività 2020
Get PDFL’indagine condotta nel corso dell’estate 2020 nasce da una richiesta del Parco Nazionale dello Stelvio,
settore trentino (Parco) di indagare la qualità dell’aria all’interno del Parco. Il coinvolgimento della
Fondazione Edmund Mach (FEM) con il tramite dell’Agenzia Provinciale per la Protezione dell’Ambiente di
Trento (APPA) ha collocato questo studio nell’ambito dell’accordo quadro già in essere tra il Parco e FEM.
Obiettivo generale del progetto è il monitoraggio di alcuni dei parametri che contribuiscono alla valutazione
della qualità dell’aria in aree del Parco dello Stelvio -settore trentino, anche ai fini di una valorizzazione degli
ambienti e dei paesaggi del Parco. I dati raccolti consentono di ottenere informazioni utili anche a fini turistici,
per informare i fruitori del Parco sulla qualità della matrice aria, componente importante dell’ambiente
AiRabbi: qualità chimica e biologica dell’aria in Val di Rabbi: relazione tecnica dell’attività 2024 e sintesi del progetto
No full textLa presente relazione tecnica riporta i risultati dello studio svolto nel 2024 sulla qualità biologica e chimica dell’aria in Val di Rabbi e una sintesi dei risultati dell’intero progetto realizzato dal 2020 al 2024. Per il 2024, le attività sono state definite nell’ambito dell’incarico alla Fondazione Edmund Mach, Centro di Ricerca e Innovazione da parte del Servizio Sviluppo Sostenibile e Aree Protette, Ufficio di gestione del Parco Nazionale dello Stelvio (Prot. S175/2024/17.11.1-57C3/SM/LP/MD) e successive modifiche (prot. n. S175/2024/U466/17.11.1-57C3/TB/LP/MD
Aria di montagna!
Get PDFUno studio di (bio)aerosol
in ambiente alpino:
il caso della Val di Rabbi.
In tre siti identificate ben
31 diverse tipologie di polline,
in quota il periodo di fioritura
e dispersione pollinica
avviene più tardi rispetto
al fondovalle in taluni casi
fino a 12 settiman
AiRabbi: qualità chimica e biologica dell’aria in Val di Rabbi: relazione tecnica dell’attività 2023
Get PDFPotenzialità del campionamento passivo per studi sul (bio)aerosol in siti montani: il caso-studio della Val di Rabbi (TN)
No full textAirborne pollen in Alpine sites
Get PDFAirborne pollen is usually monitored at urban centers, where most people live, to provide information on types and amount of allergenic pollen. Thus, very few aerobiological data are available for remote, mountainous sites. This study aims to characterize the biological quality of the air in an alpine valley in Trentino (North Italy), a region highly interested by the presence of tourists (e.g., 9.3 million overnight stays registered during June - September 2021). Materials and Methods An aerobiological study was carried out during late spring and summer in 2020 and 2021 in Val di Rabbi, an alpine valley located in the Trentino sector of Stelvio National Park. Gravitational Sigma2 samplers were selected for the survey, for their reliability and efficiency (VDI_2119 2013) and easy handling at remote sites (Gottardini et al. 2021), and installed at 2 m above ground level in 5 sites located at altitudes ranging from 700 to 2000 m a.s.l. Sampling surfaces, treated with an adhesive medium, were analyzed by optical microscopy (OM; 400×; Leitz Diaplan) for pollen identification and count (weekly samples); the average daily sedimentation rate (P cm–2 d–1 ) was calculated for the June-August period. In 2021, an active Hirst-type sampler was concurrently installed in one of the five sites (daily samples). Samples were processed and analyzed following conventional techniques and standardized protocols (UNI EN 16868:2019). Results and Discussion In the two study periods, the number of identified pollen taxa ranged from 25 at the highest elevation site (2000 m a.s.l.) to 39 at the lowest elevation (700 m a.s.l.). The proportion of arboreal pollen slightly decreased with the altitude, from 51% to 42%. The three most abundant pollen taxa were pine (Pinus), grasses (Poaceae) and neetle (Urticaceae), even if in different proportion at each site. The only grass and nettle allergenic pollen represented on average the 52% of the total pollen. The pollen season peak for grasses showed a delay of about 4 days every 100 m of elevation (Figure 1). 47 pollen taxa were identified, by active sampling, 10 more than by the passive one. The most abundant pollen taxa detected by active sampling were pine, grasses, and nettle, as for passive sampling, with the last two representing even the 71% of the total. The pollen season peak for grasses was on 22nd June, coherently with the passive sampling results at the same site. Conclusions Our mountain aerobiological study reveals the presence of allergenic pollen even at high altitude, with noteworthy shifts in the pollen season. The surveyed data can be further exploited for studying the plant biodiversity in remote areas, as well as to provide useful information for allergic tourist and hikers. Moreover, passive sampling proved to be a feasible solution for aerobiological studies in remote or orographically complex areas, typically excluded in routine air quality monitoring. References Gottardini et al. (2021). AAQR, Vol. 21, https://doi.org/10.4209/aaqr.210010 VDI_2119 (2013). Ambient air measurements. Sampling of atmospheric particles > 2.5 μm on an acceptor surface using the Sigma-2 passive sampler. Characterization by optical microscopy and calculation of number settling rate and mass concentration. ICS: 13.040.01. Beuth Verlag, Berlin. Germany. Acknowledgements The study was partially financed by Provincia Autonoma di Trento (IT). We are grateful to Mattia Precazzini and Gabriele Canella for the support in field work, and to Maria Cristina Viola for the microscope pollen analysis
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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