European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Hydrochemical conditions of Zalew Szczecinski (Szczecin Lagoon), southern Baltic Sea (1991-94)

Data holding centreSea Fisheries Institute (SFI) - Research Station in Swinoujscie
CountryPoland  Poland
Time periodFrom 1991 to 1994 (without winter seasons)
OngoingNo
Geographical area

6 sites covering the Polish part of Zalew Szczecinski - 1 in Roztoka Odrzanska (south of Lagoon), 4 in the open Lagoon and 1 on Wicko Lake (north of Lagoon)

Observations 
Parameters

Alkalinity, acidity and pH of the water column; Dissolved oxygen parameters in the water column; Nitrate concentration parameters in the water column; Nitrite concentration parameters in the water column; Phosphate concentration parameters in the water column; Temperature of the water column

Instruments

PH sensors; titrators; spectrophotometers

Description 
Summary

The purpose of the investigation was to collect the basic data set concerning conditions of water in the period 1991-1994. The general characteristics of the basin were determined from these measurements and used in a model. In this model the following were fixed: dissolved oxygen concentration as a measure of self-cleaning of water; concentration of nitrate, nitrite and phosphate as a measure of eutrophication; biochemical oxygen demand as a measure of organic loading and concentration of chloride as a measure of general mineralization. Samples were taken when the lagoon was without ice floes i.e. from April to November. At each station the samples were taken using Nansen bottles or Ruttner water samplers. All parameters were determined for the surface and bottom layers of the water. Measurements were made once a month (exceptionally twice). During chemical analysis the following methods were applied: - for determination dissolved oxygen - method described by Winkler; - for determination nitrite, nitrate - method described by Morris and Riley; - for determination phosphate - method described by Atkins (modified by Harvey); - for determination chloride - method described by Mohr.

OriginatorsSea Fisheries Institute (SFI) - Research Station in Swinoujscie
Availability 
OrganisationSea Fisheries Institute (SFI) - Research Station in Swinoujscie
AvailabilityMoratorium
ContactNot supplied (Head of SFI in Swinoujscie)
Address

Sea Fisheries Institute (SFI) - Research Station in Swinoujscie
pl. Slowianski 11
Swinoujscie
Zachodniopomorskie
72-600
Poland

Telephone+48 91 3212655
Facsimile+48 (91) 3213087
Administration 
Collating centreInstitute of Meteorology and Water Management, Maritime Branch in Gdynia (IMWM MB)
Local identifier21007001
Global identifier1675
Last revised2009-01-08