Hydrographic stations and phytoplankton studies in Tyrrhenian Sea (1991-92) - project MUCINUTRI'92

Data set information

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Data holding centreUniversita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale
CountryItaly  Italy
Time periodFrom December 1991 to September 1992
Geographical area

Two sites located in the Northern Tyrrhenian Sea at (42° 23'N, 11° 05'E) and (42° 20'N, 10° 45'E). Occasionally other sites where mucilage were present, also in the Southern Tyrrhenian Sea


Variable fluorescence parameters; Chlorophyll pigment concentrations in water bodies; Nitrate concentration parameters in the water column; Nitrite concentration parameters in the water column; Salinity of the water column; Density of the water column; Phytoplankton taxonomic abundance in water bodies


Fluorometers; CTD; active fluorometers


The MUCINUTRI '92 program has two different aims: to follow the temporal evolution of phytoplankton populations and nutrient availability in relation to the vertical mixing of the water column, at a temporal scale narrower than the seasonal and related to the summer occurrence of mucilage in the Tyrrhenian Sea. Two sites were sampled about every ten days at 0, 10, 25, 50, 75 and 100m (a total of about 150 samples) measuring vertical profiles of temperature, salinity, density, dissolved oxygen and pH with a CTD probe and of downwelling, upwelling and scalar PAR quantic irradiance with photoprobe equipped with LICOR sensors. Samples were collected to analyze phytoplankton pigments (Jeffrey and Humphrey, 1975, Biochem. Physiol. Plant. 167: 191-194; Lorenzen, 1967, Limnol. Oceanogr. 12: 343-346) and nutrients (Strickland and Parsons, 1972, Bull. Fish. Res. Bd. Can., 167), yellow substance (Bricaud et al., 1981, Limnol. Oceanogr. 26: 43-53), phytoplankton density (Hasle, 1978, Unesco Monogr. Oceanogr. Methods 6: 88-96) and species composition. When they were present, mucilage have been collected to analyse phytoplankton density and composition, and samples have been incubated with 14C to measure primary production (Riemann and Maller Jensen, 1991, J. Plankt. Res., 13: 853-862) and for autoradiography. Data are arranged in tables of parameters for each cruise, vertical profiles and time series for each station.

OriginatorsUniversita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale
Data web site
OrganisationUniversita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale
AvailabilityBy negotiation
ContactMori G.

Universita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale
Via P.A. Michelini 1


Collating centreOGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Division of Oceanography
Local identifierOGS-EDMED-173
Global identifier3801
Last revised1992-10-20