This environmental impact assessment for Kriegers flak ... - Vattenfall

The average occurrence of Þ sh was measured to 122
individuals/hectare and 13.8kg/hectare.
The test Þ shing of cod has mainly resulted in detection
of a stock of between 18 and 23 cm, see Þ gure
below. Juvenile cod under 15 cm was sparse, only 3.5
% of the catch. Spawn mature cod above the minimum
size of 38 cm only accounted for 4.7 % of the catch.
The result of these tests in other words indicated
that the area does not constitute a spawn or growth
area for cod.
The survey methods from the test Þ shing in the
spring of 2004 have been assessed and suggestions for
further test Þ shing in the autumn of 2004 and spring of
2005 have been worked out. The result of these complimentary
tests will be presented in March 2005.
FISH IN THE BALTIC
The fi sh fauna in theBaltic can be divided into two
categories, namely those who prefer to live in pelagic
areas and those who prefer benthic conditions (i.e.
species living close to the seabed). Examples of pelagic
species are herring, Clupea harengus, spratt, Sprattus
sprattus, salmon, Salmo salar, brown trout, Salmo
trutta, transparent goby, Aphia salar and mackerel,
Scomber scombrus.
Those who prefer the seabed are cod, Gadus
morthua and whitling, Merlangius merlangus. These
species hunt either directly on the seabed or just
above it. The cod prefers to stay at mussel banks,
areas covered in growth and stony areas.
Smaller fi sh belonging to the goby species live on
sandy seabeds, for instance grey gunard, Ammodytidae,
Eutrigla gurnardus, and young fl at fi sh (fl ounder,
Platichthys fl esus, dab, Limanda limanda, plaice, Pleuronectes
platessa and turbot, Psetta maxima).
Rock and stone areas and mussel banks seem to
be favoured by tadpole fi sh, Raniceps raninus, black
goby, Gobius niger, rock gunnel, Pholis gunnellus,
Goldsinny-wrasse, Ctenolabrus rupestris, lumpsucker,
Cyclopterus lumpus, eel, Anguilla anguilla, Viviparous
blenny, Zoarces viviparous, lemon sole, Myxocephalus
scorpius, Fourhorn sculpin, Myxocephalus quadricornis
PRESENTATION OF THE AREA 83
Size distribution for cod, spring 2004
and longspined bullhead, Taurulus bubalis.
In shallow waters between the stone fi elds, there
are areas covered with sea grass and algae. In the sea
grass one fi nds broad-nosed pipefi sh (Syngnathus
typhle), greater and smaller pipefi sh and two-spotted
goby (Gobiusculus fl avescens). As these areas are full
of hiding places, they are like playing rooms for many
fi sh species.
As the water is relatively deep at Kriegers Flak, there
are only very few individuals of red algae fastened to
stones or in aggregate with blue mussels.
On soft seabeds one fi nds Lumpenus lampretaeformis,
Rhinonemus cimbrius, Agonus cataphractus
and different kinds of fl at fi sh.
Different species live at different depths. There are
species that move between different depths dependent
on the season.
Fourbeard rockling and Snakeblenny live at more
than 20 metres depth.
Sea stickleback (Spinachia spinachia) live at less than
10 metres depth and is not infl uenced by that planned
project.
Great sandeel lives in coastal waters during the
summer months and retreats to deeper waters during
the winter