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51.
De Sabato Luca Amoroso Maria Grazia Ianiro Giovanni Esposito Claudia De Grossi Luigi Fusco Giovanna Barone Antonino Martini Enrica Ostanello Fabio Di Bartolo Ilaria 《Food and environmental virology》2020,12(1):1-8
Food and Environmental Virology - In industrialized countries, hepatitis E is now recognized as an emerging zoonosis. Autochthonous cases have been increased over recent years in Europe and are... 相似文献
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Tiziana Romagnoli Giorgio Bavestrello Emellina M. Cucchiari Mario De Stefano Cristina G. Di Camillo Chiara Pennesi Stefania Puce Cecilia Totti 《Marine Biology》2007,151(2):537-552
The microalgal community associated with Eudendrium racemosum, a marine hydroid widely distributed in the Mediterranean Sea, was studied during an annual cycle, at monthly frequency,
in a coastal station of the Ligurian Sea. Microalgae were represented mainly by diatoms, which exhibited higher abundance
and biomass values between autumn and spring (max 46,752 cells mm−2 and 1.94 μg C mm−2, respectively), while during summer a significant decrease was observed (min 917 cells mm−2 and 0.013 μg C mm−2). High levels of abundance of filamentous cyanobacteria were observed in summer. Spatial distribution of epibiontic microalgae
showed a markedly increasing gradient from the basal to the apical part of hydroid colonies. Considering the growth forms
of diatom communities, motile diatoms (mainly small naviculoid taxa) were the most abundant in all the periods. Adnate (Amphora and Cocconeis spp.) were distributed mainly in the basal and central part of hydroid colonies and showed two peaks (autumn and summer).
Erect forms (mainly Tabularia tabulata, Licmophora spp., Cyclophora tenuis) were mainly distributed in the apical part of the colonies and showed their maximum densities in spring–summer. Tube-dwelling
(Berkeleya rutilans, Parlibellus sp.) were observed at low densities throughout the study period, without any significant temporal or spatial variability.
Comparing the microalgal communities on marine hydroid to those grown on mimic substrata placed in the sampling station during
summer, significantly higher values of abundance were observed in the hydroid, suggesting that microalgae may benefit from
the polyp catabolites. This fact was particularly evident for the adnate diatoms, whose temporal trend paralleled the cycle
of hydroid host. 相似文献
54.
Minganti V Cornara L Piana M Corallo A Mariotti MG 《Journal of environmental monitoring : JEM》2004,6(1):23-25
Samples of Pteris vittata L. (brake fern or ladder brake) collected in Genova and in areas outside urban centres, have been analysed for arsenic content in order to assess if hyper accumulating plants are suitable for monitoring purposes. Hyper accumulation ability of the Ligurian fern populations was evaluated by analysing specimens grown with hydroponic media added with As(v). Arsenic concentrations in the range 2-310 microg g(-1) dry weight have been measured in samples collected in different sites along the Ligurian coast. Arsenic concentrations in fern fronds correlate with the estimated arsenic emission in the area, verifying the applicability of P. vittata as an arsenic biomonitor. 相似文献
55.
Tahar Ghnaya Hanen Zaier Raoudha Baioui Souhir Sghaier Giorgio Lucchini Gian Attilio Sacchi Stanley Lutts Chedly Abdelly 《Chemosphere》2013,90(4):1449-1454
The implication of organic acids in Pb translocation was studied in two species varying in shoot lead accumulation, Sesuvium portulacastrum and Brassica juncea. Citric, fumaric, malic and α-cetoglutaric acids were separated and determined by HPLC technique in shoots, roots and xylem saps of the both species grown in nutrient solutions added with 200 and 400 μM of Pb(II). The lead content of the xylem saps was determined by ICP–MS. Results showed that S. portulacastrum is more tolerant to Pb than B. juncea. Lead concentration in xylem sap of the S. portulacastrum was significantly greater than in that of B. juncea. For both species, a positive correlation was established between lead and citrate concentrations in xylem sap. However minor relationship was observed for fumaric, malic and α-cetoglutaric acids. In the shoots lead treatment also induced a significant increase in citric acid concentration. Both observations suggest the implication of citric acid in lead translocation and shoot accumulation in S. portulacastrum and B. juncea. The relatively high accumulation of citric acid in xylem sap and shoot of S. portulacastrum could explain its high potential to translocate and accumulate this metal in shoot suggesting their possible use to remediate Pb polluted soils. 相似文献
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The results of previous investigations in mineralized and sterile areas of Tuscany (Italy) appeared to point out the special aptitude of holly (Ilex aquifolium L.) in concentrating cadmium and zinc. in the present paper this behaviour has been verified in a mineralized area of Lombardy (Northern Italy).
Samples of leaves, twigs and barks from holly trees were collected, and metal contents (Zn, Cd, and Pb) have been determined by differential pulse anodic stripping voltammetry (DPASV). for comparison, some samples of wood anemone (Anemone nemorosa L.) and soil were also analyzed.
The data obtained confirm a preferential cadmium and zinc accumulation by holly (up to 16 and 1400 μg g-1 dry weight, respectively) also depending on different vegetal organs and vegetative stages of plants. Highest contents of lead have been recovered in the outer portion of bark. 相似文献
Samples of leaves, twigs and barks from holly trees were collected, and metal contents (Zn, Cd, and Pb) have been determined by differential pulse anodic stripping voltammetry (DPASV). for comparison, some samples of wood anemone (Anemone nemorosa L.) and soil were also analyzed.
The data obtained confirm a preferential cadmium and zinc accumulation by holly (up to 16 and 1400 μg g-1 dry weight, respectively) also depending on different vegetal organs and vegetative stages of plants. Highest contents of lead have been recovered in the outer portion of bark. 相似文献
58.
Sprovieri M Oliveri E Di Leonardo R Romano E Ausili A Gabellini M Barra M Tranchida G Bellanca A Neri R Budillon F Saggiomo R Mazzola S Saggiomo V 《Journal of environmental monitoring : JEM》2011,13(6):1753-1760
The Augusta basin, located in SE Sicily (southern Italy), is a semi-enclosed marine area, labelled as a highly contaminated site. The release of mercury into the harbour seawater and its dispersion to the blue water, make the Augusta basin a potential source of anthropogenic pollution for the Mediterranean Sea. A mass balance was implemented to calculate the HgT budget in the Augusta basin. Results suggest that an average of ~0.073 kmol of HgT is released, by diffusion, on a yearly basis, from sediments to the seawater, with a consequent output of 0.162 kmol y(-1) to coastal and offshore waters; this makes the Augusta area an important contributor of mercury to the Mediterranean Sea. Owing to the geographical location of the Augusta basin, its outflowing shelf-waters are immediately intercepted by the surface Atlantic Ionian Stream (AIS) and mixed with the main gyres of the eastern Mediterranean Sea, thus representing a risk for the large-scale marine system. 相似文献
59.
Giuliani S Romano S Turetta C Cu NH Bellucci LG Capodaglio G Mugnai C Nhon DH Frignani M 《Journal of environmental monitoring : JEM》2011,13(5):1383-1392
Trace element concentrations have been measured in soil and sediment samples taken from the Thua Thien Hue (TT-H) Province and the Tam Giang-Cau Hai (TG-CH) Lagoon in 2002 and 2004. Results show that the lagoon is only slightly contaminated by elements such as Ag, Cd, Cr, Cu, Ni, Pb and Zn, whereas As, probably naturally enriched in this Asian region, reaches values above the lowest internationally accepted sediment quality guidelines. Concentrations in soils are ascribable to natural sources and distributions in the TG-CH Lagoon are mainly influenced by river inputs, with Ag and Cd undergoing estuarine desorption processes. However, concentration-depth profiles of most trace elements in sediments show a recent increasing trend that might be linked to the economic development of the area. The comparison of porosity and (210)Pb depth profiles (confirmed also by Cd and As) from repeated samplings of the same core locations in the TG-CH Lagoon seems to account for a loss of 5-10 cm of surficial sediment that took place during the time interval between the two samplings. It is hypothesized that extreme meteorological events (e.g. a major typhoon that hit the area in November 2003) could be responsible for such sediment displacement. 相似文献
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