Search

Your search keyword '"TRAMATI, Cecilia Doriana"' showing total 41 results
Start Over Author "TRAMATI, Cecilia Doriana"
41 results on '"TRAMATI, Cecilia Doriana"'

6. Trace element storage capacity of sediments in dead P. oceanica mat from a chronically contaminated marine ecosystem

Author

DI LEONARDO, Rossella, MAZZOLA, Antonio, TRAMATI, Cecilia Doriana, VIZZINI, Salvatrice, Cundy, AB, Di Leonardo, R, Mazzola, A, Cundy, AB, Tramati, CD, and Vizzini, S

Subjects
Settore BIO/07 - Ecologia, Seagrass mat, Marine sediment, Trace element, Biogeochemical sink, Mediterranean Sea
Abstract

Posidonia oceanica mat is considered a long-term bioindicator of contamination. Storage and sequestration of trace elements and organic carbon (Corg) were assessed in dead P. oceanica mat and bare sediments from a highly polluted coastal marine area (Augusta Bay, central Mediterranean). Sediment elemental composition and sources of organic matter have been altered since the 1950s. Dead P. oceanica mat displayed a greater ability to bury and store trace elements and Corg than nearby bare sediments, acting as a long-term contaminant sink over the past 120 yr. Trace elements, probably associated with the mineral fraction, were stabilized and trapped despite die-off of the overlying P. oceanica meadow. Mat deposits registered historic contamination phases well, confirming their role as natural archives for recording trace element trends in marine coastal environments. This sediment typology is enriched with seagrass-derived refractory organic matter, which acts mainly as a diluent of trace elements. Bare sediments showed evidence of inwash of contaminated sediments via reworking; more rapid and irregular sediment accumulation; and, because of the high proportions of labile organic matter, a greater capacity to store trace elements. Through different processes, both sediment typologies represent a repository for chemicals and may pose a risk to the marine ecosystem as a secondary source of contaminants in the case of sediment dredging or erosion.

Published
2017

10. THE EFFECT OF HEAVY METALS ON BENTHIC FORAMINIFERA IN THE GULF OF GELA (SICILIAN CHANNEL)

Author

Musco, M, Cuttitta, A, BONOMO, Sergio, Tranchida, G, Bonanno, A, Patti, B, Basilone, G, Mazzola, S., MAZZOLA, Antonio, VIZZINI, Salvatrice, TRAMATI, Cecilia Doriana, Musco, M, Cuttitta, A, Bonomo, S, Tranchida, G, Mazzola, A, Vizzini, S, Tramati, C, Bonanno, A, Patti, B, Basilone, G, and Mazzola, S

Subjects
benthos, foraminifera, sediment, Sicilian Channel, heavy metal pollution
Abstract

Benthic foraminifera are very sensitive to oceanographic parameter variations, to which they rapidly response through changes in the abundance and/or richness of their associations and in morphological variations of their shell. Many studies have used benthic foraminifera as bioindicators. We investigated recent benthic foraminiferal assemblages in the Gulf of Gela (Sicilian Channel, Mediterranean Sea), examining their relative abundance, specific richness and morphological abnormalities, to highlight a possible correlation with oceanographic features and the concentration of heavy metals in sediments. Sediment was sampled in summer 2006 using box corers in four stations at increasing distances from a point-source of industrial pollution. We performed hydrological characterization of the study area, grain size analysis and heavy metal determinations in sediments, and quantitative and qualitative analyses of benthic foraminifera. Heavy metal analyses highlighted very high mercury and cadmium concentrations in the station nearest the pollution source, in which the Dominance index showed the minimum of population density. In conclusion, a positive correlation seems to exist between the abundance of foraminifera and the concentration of cadmium and mercury in the sediment

Published
2011

21. Registration of past submarine massive outgassing events in Posidonia oceanica L. (Delile) through stable carbon isotopes

Author

VIZZINI, Salvatrice, DI MAIDA, Germana, PIRROTTA, Maria, TOMASELLO, Agostino, TRAMATI, Cecilia Doriana, TUMBARELLO, Valeria Antonia, MAZZOLA, Antonio, CALVO, Sebastiano, Vizzini, S, Di Maida, G, Pirrotta, M, Tomasello, A, Tramati, CD, Tumbarello, VA, Mazzola, A, and Calvo, S

Subjects
Settore BIO/07 - Ecologia, marine phanerogams, hydrothermal vents, CO2, bioindicator
Published
2009

25. Study of benthic foraminifera in the Continental Shelf of the Gulf of Gela (Sicilian Channel) and their possible use as bioindicators

Author

Musco, M, Cuttitta, A, BONOMO, Sergio, Tranchida, G, MAZZOLA, Antonio, VIZZINI, Salvatrice, TRAMATI, Cecilia Doriana, Bonanno, A, Patti, B, Basilone, G, Mazzola, S., D’Elia, M, Musco, M, Cuttitta, A, Bonomo, S, Tranchida, G, Mazzola, A, Vizzini, S, Tramati, C, Bonanno, A, Patti, B, Basilone, G, D’Elia M, and Mazzola, S

Subjects
Settore BIO/07 - Ecologia, benthic foraminifera, bioindicators, assemblage, Mediterranean
Published
2009

Catalog

Books, media, physical & digital resources
See catalog results