European Directory of Marine Environmental Data (EDMED)

Data set information

| Query EDMED |     

General
Data set name

Time series of oxygen in Danish waters (1902 onwards)

Data holding centreAarhus University, Department of Bioscience, Marine Ecology Roskilde
CountryDenmark  Denmark
Time periodFrom 1902 onwards (gaps during and after World Wars, 1958-72)
OngoingYes
Geographical area

Southern Belt Sea; Western Baltic Proper and, from 1975, the Sound, Kattegat and Great Belt

Observations 
Parameters

Excretion rate parameters in the water column

Description 
Summary

Ancient oxygen data from the southern Belt Sea and western Baltic Proper have been compiled by the Danish Institute for Fishery and Marine Research. Even though the measurements have not been conducted regularly, it is possible to compare the oxygen conditions in different periods: 1902-12, 1926-38, 1949-59, 1973-79 and 1980-90. Since 1975 oxygen concentrations have been measured at standard depths at about 25 stations in the Sound, Kattegat, Belt Sea and western Baltic Proper 6-12 times per year. As all the oxygen measurements have been made by Winkler titration, the comparability and accuracy of all data is good. The time series show a decrease in the oxygen concentration in autumn after the 1950s. In the 1980s serious oxygen depletion has nearly annually been observed in the area from the southern Kattegat to the western Baltic Proper.

OriginatorsAarhus University, Department of Bioscience, Marine Ecology Roskilde
Danish Ministry of the Environment
International Council for the Exploration of the Sea (ICES)
Data web sitehttp://mads-en.dmu.dk
Availability 
OrganisationAarhus University, Department of Bioscience, Marine Ecology Roskilde
AvailabilityUnrestricted
ContactGunni Aertebjerg
Address

Aarhus University, Department of Bioscience, Marine Ecology Roskilde
399 Frederiksborgvej P.O. Box 358
Roskilde

DK-4000
Denmark

Telephone+45 46 30 12 00
Facsimile+45 46 30 12 11
Emailgae@dmu.dk
Administration 
Collating centreAarhus University, Department of Bioscience, Marine Ecology Roskilde
Local identifier13032001
Global identifier1115
Last revised2009-03-14