| RESTORATION PLANES |
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The Baltic is not doing very well because of the pollution with chemical
substances and nutrients. A proposal for collaboration between the countries
surrounding the Baltic was to halving the pollution. One problem is that
the countries that pollute the most are not in a very good economic situation.
Furthermore, there is no legal or practical possibility of punishing the
countries that does not respect the proposal. In short, the only way to
stop the pollution is by changing the attitude towards the countries surrounding
the Baltic.
One important sign that indicates pollution in the oceans/seas is when
the bottom of the sea is covered with sulphur bacteria, and when this happens
an enormous deoxygenation has taken place. A lot of nitrate and phosphate
flows into the Baltic and therefore the Baltic has high concentrations
of these substances.
In summer, the concentration of oxygen decreases, partly becase of
the seperation of the water into an upper warm layer of water with relatively
low salinity, and a bottom layer af relatively cooler water with high salinity.
The lower, bottom layer of the sea will end up depleated of oxygen because
the to layers described above do not exchange water and other substances
.
The fish, and the fauna on the whole, will not have enough oxygen to
respire. The living organisms will die and the fish ends up dead, flowing
around in the surface of the sea. The countries surrounding the Baltic
tries to limit the fishing. Some people are making fishing quotas in order
to make sure that the fish will survive