RESEARCH 
a) Impact on marine ecosystems 
i) Assessment of toxic effects 
(7) 
Causes and effects of oxygen 
deficiencies in the south 
eastern North Sea 
(7) 
Occurrence and effects of 
oxygen deficiency in 
Federal German and Danish 
coastal waters 
Relationship between oxygen 
deficiency and diseases of 
dab (Limanda limanda (L.)) in 
the northern German Bight 
1984-1989 
Oxygen depletion in bottom- 87 - 89 
water of the German Bight 
Oxygen deficiency in deeps 
of the German Bight: causes 
and biological consequences 
Investigation about the spatial and 
temporal variation of the thermo 
haline stratification in the 
German Bight 
2. BAH 
2. BFA-Fi 
3. Lang/Damm 
2. BFA-Fi 
3. Dethlefsen 
1. BMFT 
2. BAH 
1. BMFT 
2. BAH 
1. UBA 
2. DHI 
Dissolved inorganic nutrients, oxygen concen 
trations and oxygen consumption rates, total C, 
N and P, seston and its organic component, 
phytoplankton biomass and species composition 
are measured along with hydrographical parameters. 
Benthic fauna is enumerated qualitatively and 
quantitatively (1984 - 1989). 
Ni 
-4 
I 
Determination of factors influencing strati 
fication; with a view to occurrences of 
oxygen deficiency.