1,720,986 research outputs found
Seasonal variations in carbon and nitrogen content of Acartia clausi (Copepoda, Calanoida) in the Gulf of Trieste (Northern Adriatic Sea).
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Tintinnid communities distributions in the Strait of Magellan (Chile).
No full textIn the Strait of Magellan and in the adjacent Pacific and Atlantic Ocean shelf tintinnids were studied during three oceanographic cruises (November 1989, March–April 1991, and April 1995). Total tintinnid abundances were higher in the first cruise and dramatically decreased in the other two late summer cruises. As a general rule, abundances were higher at the surface and in the Atlantic sector. A total of 47 tintinnid species were found. There was not a single species, which could be identified as indicator of a specific water mass. For each cruise, cluster analysis applied on a species/samples matrix identified station sets characterized by a specific tintinnid association. Angosturas entrance was characterized by agglutinated lorica tintinnids, typical of the Atlantic waters, while the Pacific sector by hyaline species. In Punta Arenas basin, a peculiar tintinnid community was clearly identified,
although water masses derived from the mixing process between the Pacific and Atlantic waters. Overall, tintinnid communities maintained the structure typical of the water
mass despite advection and/or mixing. The main result of this study was to demonstrate that the structure of the tintinnid species association could be used as indicator of the
origin of water masses
Seasonal and inter-annual plankton variability in th Gulf of Trieste (northern Adriatic).
No full textAnalyses of relationships between mucous aggregates and phytoplankton communities in the Gulf of Trieste (North Adriatic Sea) by multivariate tecniques
No full textMorphology of the flagellar pore complex in Prorocentrum minimum (Dinophyceae) from the Adriatic and Baltic Seas
No full textProrocentrum minimum (Dinophyceae), a planktonic microalga forming red tides, is considered a potentially toxic
species. In view of its likely harmful role, accurate identification of P. minimum to species and/or subspecies may be
particularly important. Like most thecate dinoflagellates, species identification is largely based on morphology of the theca and on features of both flagellar and auxiliary apical pores. In this study, we compared 18S rDNA gene sequences to confirm that P. minimum strains isolated from the Baltic (3 strains) and Adriatic (3 strains) Seas were the same species, and compared the morphology of the apical pore region among the strains. Our
results confirm that the platelet arrangement in the apical pore region is a stable morphological character, independent of the strain origin and culture growth phase. In addition a small tooth, opposite to the apical collar in the auxiliary pore area, is proposed
as an additional diagnostic character
Is it possible to identify any plankton succession in the Gulf of Trieste (Northern Adriatic Sea)?
No full textDepth profiles of bacterioplankton assemblages and their activities in two different areas of the Ross Sea (Antarctica).
No full textOrganic matter degradative potential of Halomonas glaciei isolated from frazil ice in the Ross Sea (Antarctica)
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