Cabrini, M. Laboratory of Marine Biology, cabrini@univ.trieste.it
Cok, S. Laboratory of Marine Biology, coksara@univ.trieste.it
Salvi, C. Department of Geological, Environmental and Marine Science, salvi@univ.trieste.it

 
PHYTOPLANKTON CONTRIBUTION TO PARTICULATE ORGANIC MATTER IN THE SOUTH ADRIATIC
 
In the Otranto Channel, area scarcely monitored for biological parameters, particulate matter and phytoplankton community were seasonally analysed from May 1995 to February 1996 along a transept located from Italian to Albanese coast. At the same time the environmental factors were also releaved. Among the phytoplankton community diatoms prevailed with Chaetoceros and Pseudo-nitzschia as the most abundant genera. The maximum value of 2,349,140 cells/L was registered during summer in a middle station at 10 m depth. Total suspended matter (TSM) was generally very scarce (always under 2 mg/L) if compared with Northern Adriatic basin in which freshwater inflows are conspicuous. Along the water column TSM increases from spring to winter and a negative gradient was evident from the western to the eastern coast. The highest values of Particulate Organic Carbon (POC) corresponded to maximum phytoplankton abundances in August. In winter, when the microalgal presence was low, the highest values of POC were probably due to a not autochthonal source.
 
Day: Thursday, Feb. 4
Time: Poster
Location: Sweeney Center
 
Code: CS55TH0208S