List of Figures 
212 
Nordseezustand 2003 
Fig. 4-14: Evolution of some algae at Helgoland Roads in April 2003 119 
Fig. 4-15: Observational network for contaminant monitoring in the German Bight. 122 
Fig. 4-16: Geographical distributions of a- ß- and y-HCH concentrations (ng/L) for near-sur- 
face sea water (5 m) of the German Bight in May 2003 124 
Fig. 4-17: HCH concentrations relative to Stade (100%) along the salinity gradient of the Elbe 
river plume. Sali nty as percent fresh water; note log 10 -scaling 125 
Fig. 4-18: Geographical distributions of a- and y-HCH concen trations for near-surface sea wa 
ter (5 m) of the North Sea in July/August 2003. Figures below columns give the ratio a/y- 
HCH, column heights in ng/L 126 
Fig. 4-19: Temporal evolution since 1987 of a-, ß-, and y-HCH concentrations at station T41. 
Figures inside bullets give month of observation (1,2,3, ...,0,N,D) 127 
Fig. 4-20: As Fig. 4-19, except for logarithmic concentration scale 128 
Fig. 4-21: Geographical distribution of TOC contents of surface sediments in the German Bight 
in May 2003 132 
Fig. 4-22: HCH-, DDD-, and CB153 concentrations relative to dry weight (top) and total organic 
carbon (bottom) in surface sediment of the German Bight in May 2003 133 
Fig. 4-23: Pollution sightings in the German Bight in 2003 136 
Fig. 4-24: Geographical distribution of total concentration of n-Alkanes from C 20 to C 30 for 
near-surface sea water (5 m) of the North 5ea in July/August 2003. Figures below columns 
give the CPI, column heights in ng/L 138 
Fig. 4-25: Geographical distribution of concentrations ofn-Alkanes C 13 to C 19 for near-surface 
sea water (5 m) of the North 5ea in July/August 2003. Column heights in ng/L, underneath 
columns station IDs 139 
Fig. 4-26: Concentrations (ng/L) of some PAHs in surface water (5 m) of the German Bight in 
May 2003 142 
Fig. 4-27: Concentrations of some PAHs relative to Stade (100 %) along the salinity gradient of 
the Elbe river plume. Sali nty as percent fresh water (%); note log 10 -scaling 143 
Fig. 4-28: Concentrations of some PAHs in North Sea surface water (5 m) in July/August 2003. 
Column heights in ng/L, underneath columns station IDs 144 
Fig. 4-29: Typical PAH concentration pattern in a sediment sample from the German Bight. 145 
Fig. 4-30: B[a]P concentrations in surface sediments of the German Bight 146 
Fig. 4-31: Mean TBT concentrations (ng/L) in near-surface water of the German Bight during 
1999-2002 148 
Fig. 4-32: Concentrations (ng/L) of some triazine herbicides in near-surface sea water of the 
North Sea in July/August 2003 151 
Fig. 4-33: Concentrations (ng/L) of some phenylurea herbicides in near-surface sea water of the 
North Sea in July/August 2003 152 
Fig. 4-34: Seasonal evolution of phenylurea herbicides in the river Elbe at Blankenese in 2003.. 
154 
Fig. 4-35: Spatial distribution of near-surface (10 m) copper concentrations (ng/L) in filtrated 
sea water during winter2003 (January - March). Crosses indicate sampling sites 162 
Fig. 4-36: Time series of lead concentrations in winter in filtrated near-surface (10m) sea water 
from the German Bight. Only samples with associated salinty within the range 28-31 were 
used. 164