All the Pagasitikos gulf area

Ammonium and ammonia concentration parameters in water bodies; Bacteria non taxonomy-related biomass expressed as carbon per unit volume of the water column; Bacteria generic abundance in water bodies; Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Zooplankton carbon biomass per unit area of the water column; Nitrate concentration parameters in the water column; Nitrite concentration parameters in the water column; Phosphate concentration parameters in the water column; Salinity of the water column; Horizontal velocity of the water column (currents); Silicate concentration parameters in the water column; Temperature of the water column; Phytoplankton generic abundance in water bodies; Phytoplankton generic biomass in water bodies; Dissolved total or organic phosphorus concentration in the water column

CTD; acoustic backscatter sensors

During 1998-1999 in the framework of a research project 'Development of an integrated policy towards the sustainable management of Pagasitikos gulf' monthly samplings were performed. The physical parameters measured by the Oceanography lab of the University of Thessaly, were water temperature, salinity and oxygen profiles using a CTD and water currents with an ADCP covering the whole area of the gulf as well as the connection channels with Aegean Sea and north Evoikos. Samplings took place during 7 field trips (27/2/1999; 27/3/1999; 8/5/1999; 17/6/1999; 21/6/1999 13/9/1999; 17/11/1999) with a vertical resolution of 1m, in a dense grid of 59 stations. For the estimation of nutrient concentrations (Nitrate, Nitrite, Ammonium, Phosphate, Dissolved Organic Phosphate, Silicate, Chlorophyll-a,), 9 stations were used by the Water Authority of the Prefecture of Magnisia covering the area in front of the city of Volos, the area of the sewage outfall, the central gulf, the Trikeri channel and the outer area influenced by the Aegean and Evoikos waters. Additionally biotic parameters (Bacteria, Phytoplankton, and Zooplankton) were measured by the Hellenic Centre for Marine Research, both in pelagic and benthic systems during 16 field trips (21/12/1998; 14/1/1999; 24/2/1999; 7/4/1998; 28/4/1998; 13/5/1998; 27/5/1998; 5/4/1999; 30/5/1999; 30/6/1999; 29/7/1999; 30/8/1999; 29/9/1998; 20/10/1998; 19/11/1998; 14/9/1999) at standard depths (0, 10, 30, 60, 100m).

Hellenic Centre for Marine Research, Institute of Oceanography
46.7 km Athinon-Souniou Av. P.O.Box 712
Anavyssos

19013
Greece