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

Data set information

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

Observations 
Parameters

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; Phytoplankton taxonomic abundance in water bodies; Density of the water column

Instruments

Fluorometers; CTD; active fluorometers

Description 
Summary

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 sitehttp://www.unifi.it/unifi/bioveg/
Availability 
OrganisationUniversita' di Firenze, Laboratorio di Ecologia, Dipartimento di Biologia Vegetale
AvailabilityBy negotiation
ContactMori G.
Address

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

50121
Italy

Administration 
Collating centreNational Institute of Oceanography and Applied Geophysics - OGS, Division of Oceanography
Local identifierOGS-EDMED-173
Global identifier3801
Last revised1992-10-20