EDMED Details

General

Dataset Name

Hydrographic stations and phytoplankton studies in N Adriatic Sea (March 1992)

Data Holding Centre

Universita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale

Time Period

from 9 to 23 March 1992

Start Date

1992-01-01

End Date

1992-12-31

Project

Geographic Area

Geocoverage

Adriatic Sea, 8 neritic sites from near the Po River to near Pescara

Geographic Box (south,north,west,east)

41, 11, 16, 46

Sea Area

Mediterranean Sea

Adriatic Sea

Observations

Parameters

Temperature of the water column

Salinity of the water column

Nitrite concentration parameters in the water column

Chlorophyll pigment concentrations in the water column

Phytoplankton taxonomic abundance in water bodies

Nitrate concentration parameters in the water column

Alkalinity, acidity and pH of the water column

Ammonium concentration parameters in the water column

Acoustic backscatter in the water column

Dissolved oxygen parameters in the water column

Phosphate concentration parameters in the water column

Phytoplankton generic abundance in water bodies

Silicate concentration parameters in the water column

Concentration of suspended particulate material in the water column

Instruments

optical microscopes

discrete water samplers

CTD

fluorometers

particle sizers

bench fluorometers

spectrophotometers

Description

Summary

CEE STEP, European Joint Research Program - We have focused our investigation mainly on the relationship between the photosynthetic available radiation (PAR) and its attenuation and the phytoplankton biomass which is generally very high in this area. Eutrophic conditions seem to be quite chronic to the Northern Adriatic and in the last few years this has led to large proliferations of mucus aggregates produced by phytoplankton. 1) Chlorophyll-a profiling by Back-Scat Dr. Haardt fluorometer, connected to a Meerestechnik, KMS type CTD profiler. 2) Vertical profiles of downwelling, upwelling and scalar PAR quantic irradiance were measured by a photoprobe equipped with 3 LICOR cosine Li192 SA sensor, one upwelling and two downwelling (one towards the sea surface and the latter below the surface) and one spherical downwelling (Li 195 SA). 3) Water sampling at different depths was carried out using 5 l. Niskin bottles. 4) Chloropheopigments and chlorophyll-a, b and c were analyzed in the laboratory by spectrophotometry according to Jeffrey and Humphrey (1975) and Lorenzen (1967), modified by Riemann (1978) for pheophytin-a and chlorophyll-a. 5) Dissolved organic matter (yellow substance or gilvina) was estimated by spectrophotometry according to Bricaud et al. (1981). 6) Particulate organic matter was collected by filtering through Whatman GF/C filters and analyzed by CHNS. 7) Concentration of suspended particles and their size spectra by Coulter Counter. 8) Primary production has been measured by C-14 according to the integral production method of Riemann et al. (1991).

Originator

Universita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale

References

Availability

Availability

by negotiation

Organization

Universita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale

Contact

Mori G.

Address

Universita' di Firenze - Laboratorio di Ecologia, Dipartimento di Biologia Vegetale

Firenze

50121

Italy

sdn-userdesk@seadatanet.org

http://www.unifi.it/unifi/bioveg/

Administration

Local identifier

1215

Creation Date

2014-10-02

Revision Date

2013-07-26