Salmon return to rivers in Pomorze Srodkowe
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Salmon were nearly extinct in rivers in Pomorze Srodkowe by the mid-1980s.
This occurred as a result of polluted water, numerous dams and barriers without salmon
ladders, as well as poachers. |
Salmon migrate from the northern part of the Atlantic Ocean as well as its catchments -
the North Sea and the Baltic Sea. This is a dual-habitat fish - it lives and hunts in the
sea, but to spawn, it swims upriver, up to several hundred kilometers. The females lay eggs,
approximately 1000 tiny eggs per 1 kg of body mass, into a prepared nest. Young salmon
live in rivers for 2-3 years, and then swim to the sea where they finish growing and eat
intensely. After another 2-3 years, they reach maturity and return to the river to
reproduce. They measure 75 to 150 cm in length and weigh 5 to 30 kg. The majority of
salmon die immediately after reproducing; only a few survive.
The Green Federation of Szczecin sponsored the tests returning the salmon to the rivers
in Pomorza Srodkowego. The University of Szczecin, the Polish Fisherman's Club, veterinarians
and other institutions assisted the Green Federation. In 1997, four thousand small,
artificially-reared salmon were released into the Regi River. A portion of them will return
this year to spawn. In the years following the release, the number of young fish increased,
and this year approximately 170 thousand were counted.
After the initial stocking of salmon, the Parsete River was also stocked. In mid-October
2001, 70 thousand young salmon reared in Miastku were released into the Parsete and its
tributaries from Grzmiaca to Koszalin. The exact location was not revealed so as to protect
the salmon from poachers. Salmon remember how the water where they mature tastes, and they
return to the same location to reproduce. This kind of stocking will create permanent
breeding sites in the rivers of Pomorze Srodkowe for salmon. Of course, a portion of
young salmon won't survive, but with females being especially fertile, the chances of
breeding success are high.
It's worth noting that the State Fund for Environmental Protection and Water Stewardship
sponsored the salmon stocking of the Parsete River. ONZ - Global Environmental Fund also
contributed to the project, as did many unpaid individuals, mainly because they all want
the salmon to return to Polish rivers.
Bernard Konarski
translation Jola Lukaszewska
from ZB 168
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