In the framework of NEMO Project (NEutrino Monitoring Observatory), aimed to the realization of a submarine deep observatory for neutrinos study, the hydrobiological characterization of the deep-sea area off Cape Passero (> 3000mt, South-eastern Sicily) has been executed. Four oceanographic cruises (TALASTRO I, II, III, IV) were carried out (December 1999, September 2000, July 2001, March 2002), to evaluate the seasonal evolution of trophic rate in the interested water masses. The major chemical, physical, trophic and microbiological features of waters has been investigated. The present final reports the vertical distribution of physical, chemical, trophic and microbiological parameters (micronutrients, POC, C/N, LAP, AP, luminous bacteria, etc.). The investigated area shows typical winter oligotrophic conditions and a marked water stratification, which influences the distribution of planktonic communities. As to trophic load, appreciable differences between photic and deep zone were observed. In the first one the highest levels of biological activity were noticed, moreover below the picnocline low increments were observed at 700-1000 m in the offshore waters.
Rapporto conclusivo Progetto TALASTRO 1999-2002. Studio idrobiologico dell'area marina profonda prospiciente Capo Passero (Sicilia sud-orientale) nell'ambito del Progetto NEMO
Leonardi M;Azzaro M;Bergamasco A;Caruso G;Decembrini F;Raffa F;
2002
Abstract
In the framework of NEMO Project (NEutrino Monitoring Observatory), aimed to the realization of a submarine deep observatory for neutrinos study, the hydrobiological characterization of the deep-sea area off Cape Passero (> 3000mt, South-eastern Sicily) has been executed. Four oceanographic cruises (TALASTRO I, II, III, IV) were carried out (December 1999, September 2000, July 2001, March 2002), to evaluate the seasonal evolution of trophic rate in the interested water masses. The major chemical, physical, trophic and microbiological features of waters has been investigated. The present final reports the vertical distribution of physical, chemical, trophic and microbiological parameters (micronutrients, POC, C/N, LAP, AP, luminous bacteria, etc.). The investigated area shows typical winter oligotrophic conditions and a marked water stratification, which influences the distribution of planktonic communities. As to trophic load, appreciable differences between photic and deep zone were observed. In the first one the highest levels of biological activity were noticed, moreover below the picnocline low increments were observed at 700-1000 m in the offshore waters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
