What is the reason for the poor state of fish populations in the Ljubljanica (post 2012) | MVM FISHING
Every one of you who has recently chased on the Ljubljanica, he noticed that within a few years dramatically worsened the stock and thereby also catch all the fish species in the river Ljubljanica. This situation is most acute in Vrhnika work. Fishing Families with multiple inputs are trying to improve this situation by a something when there is no effective and visible results. This is cause for concern probably more reasons why not fish in the Ljubljanica as well? Let me mention only the most pressing, some of you are known to others less well-known causes army reenlistment of this situation.
The main problem of our water pollution with organic and inorganic sewers. We have to be aware of the fact that the character of the river Ljubljanica thoroughly degraded in recent decades, rapid industrialization, and perhaps to human nature. The effluent emitted by our river already on the Croatian side and were the result of poisoning drinking water in the Loka Valley, where Ljubljanica army reenlistment running more than a creek Obrh are just a small indication of the delicate problem. Of course Ljubljanica on its way to us, further polluting the village Cerknica, army reenlistment Pivka, UNECE, Logatec and over sinks, probably even any other place that the karst sinkholes and buried Poisons from various sources, not to mention. One can only speculate what lies karst underground from factories such as Fenolit, army reenlistment Liko, IUD, poisons from the warehouse of the former Yugoslav People's Army, but it does not enumerate ...... Let me explain. The main problem of such a sight unseen contamination army reenlistment (usually when pollution is visible, we see a dead fish) is dying eggs after spawning. The fish spawn in the polluted bottom, after some time covered by a thin layer of mucus, due to particle contamination by water bears and because eggs are a living organism, can not breathe, and so die. The same problem is high and muddy water, and the constant interference in smaller watercourses due to regulations. When the eggs are covered in mud and sand deposition, they also die. Of course this is destroyed to a large extent the natural spawning of fish.
In the inventory of fish from our part of the river (RD Vrhnika) has discovered another, an additional problem, namely army reenlistment fish due to contamination with hormonal disruptors changing sex. Male specimens sex change due to high concentration of female hormones per liter of water in our rivers. How to get there these unwanted disruptors? From all kinds of drains, sewers. Perpetrators we ourselves taking the pill from which urine excreted via the so-called endocrine disrupting chemicals in our waters. Of course, this phenomenon further reduces the chances of fertilization of eggs has been deposited at the bottom of the Ljubljanica.
The next big problem of our work Ljubljanica is constant fluctuation in water levels due to locks on Ambrožev market army reenlistment and broken lock on the Grubar canal. The remaining trenches, where he previously army reenlistment held the main spawning, both prey (pike) as cyprinids are dry. Fish at the high water is compressed into these channels, spawn, water, drain and eggs or fry remain in a dry and miserable death.
The third cause of this situation is related to the organic pollutant bottom, which leads to excessive overgrown aquatic vegetation. We need to realize that this is the day produces large amounts of oxygen at night, this same oxygen takes money away fish. The most clearly visible, this obliteration about fishing at home and downstream all the way to the depths of the Zone 31. This is also one of the main reasons why there is no white fish with us. At night they lack oxygen and prefer to move into more bearable area where there is no such a drastic fluctuations.
The fourth reason that we would like to introduce and be aware of the poor, the poor genetic diversity of our fish. What does this mean? Because of locks and dams so high in Fužine as the paper mill in VEVČE is no longer normal exchange of genes, ie fresh blood, which they brought schools of fish from the lower part of the Ljubljanica, Save, or even the Danube, on their way to spawning and in our original parts of the river. These routes are interrupted impounded and now our fish spawn only in a vicious circle of the same specimens from this part of the river; If? All you do is clear that this decrease army reenlistment in resistance of fish and begin to unfold various diseases and mutations.
Although our Ljubljanica under the protection of Natura 2000 and the Regional Park Ljubljana Moor is also nothing going on očuvanju fish in the river, probably because most of them sokrajanov not be noticed in the water, but if they have, it is usually comment to the poor state : You've all hunted by fishermen!
Well, and this is the last of the big problems to which you would like to draw attention. They are hunted down, but I do not fishermen, but fish-eating birds, which also protects the sore legislation and DOPS. Flocks of cormorants have been for many years a well-kept in our districts until just did not have nothing to eat. Now we see that they are very little occurs throughout the course of the river; according to their number in previous years; Therefore, we get an enormous amount of other feathered predators, namely white
Every one of you who has recently chased on the Ljubljanica, he noticed that within a few years dramatically worsened the stock and thereby also catch all the fish species in the river Ljubljanica. This situation is most acute in Vrhnika work. Fishing Families with multiple inputs are trying to improve this situation by a something when there is no effective and visible results. This is cause for concern probably more reasons why not fish in the Ljubljanica as well? Let me mention only the most pressing, some of you are known to others less well-known causes army reenlistment of this situation.
The main problem of our water pollution with organic and inorganic sewers. We have to be aware of the fact that the character of the river Ljubljanica thoroughly degraded in recent decades, rapid industrialization, and perhaps to human nature. The effluent emitted by our river already on the Croatian side and were the result of poisoning drinking water in the Loka Valley, where Ljubljanica army reenlistment running more than a creek Obrh are just a small indication of the delicate problem. Of course Ljubljanica on its way to us, further polluting the village Cerknica, army reenlistment Pivka, UNECE, Logatec and over sinks, probably even any other place that the karst sinkholes and buried Poisons from various sources, not to mention. One can only speculate what lies karst underground from factories such as Fenolit, army reenlistment Liko, IUD, poisons from the warehouse of the former Yugoslav People's Army, but it does not enumerate ...... Let me explain. The main problem of such a sight unseen contamination army reenlistment (usually when pollution is visible, we see a dead fish) is dying eggs after spawning. The fish spawn in the polluted bottom, after some time covered by a thin layer of mucus, due to particle contamination by water bears and because eggs are a living organism, can not breathe, and so die. The same problem is high and muddy water, and the constant interference in smaller watercourses due to regulations. When the eggs are covered in mud and sand deposition, they also die. Of course this is destroyed to a large extent the natural spawning of fish.
In the inventory of fish from our part of the river (RD Vrhnika) has discovered another, an additional problem, namely army reenlistment fish due to contamination with hormonal disruptors changing sex. Male specimens sex change due to high concentration of female hormones per liter of water in our rivers. How to get there these unwanted disruptors? From all kinds of drains, sewers. Perpetrators we ourselves taking the pill from which urine excreted via the so-called endocrine disrupting chemicals in our waters. Of course, this phenomenon further reduces the chances of fertilization of eggs has been deposited at the bottom of the Ljubljanica.
The next big problem of our work Ljubljanica is constant fluctuation in water levels due to locks on Ambrožev market army reenlistment and broken lock on the Grubar canal. The remaining trenches, where he previously army reenlistment held the main spawning, both prey (pike) as cyprinids are dry. Fish at the high water is compressed into these channels, spawn, water, drain and eggs or fry remain in a dry and miserable death.
The third cause of this situation is related to the organic pollutant bottom, which leads to excessive overgrown aquatic vegetation. We need to realize that this is the day produces large amounts of oxygen at night, this same oxygen takes money away fish. The most clearly visible, this obliteration about fishing at home and downstream all the way to the depths of the Zone 31. This is also one of the main reasons why there is no white fish with us. At night they lack oxygen and prefer to move into more bearable area where there is no such a drastic fluctuations.
The fourth reason that we would like to introduce and be aware of the poor, the poor genetic diversity of our fish. What does this mean? Because of locks and dams so high in Fužine as the paper mill in VEVČE is no longer normal exchange of genes, ie fresh blood, which they brought schools of fish from the lower part of the Ljubljanica, Save, or even the Danube, on their way to spawning and in our original parts of the river. These routes are interrupted impounded and now our fish spawn only in a vicious circle of the same specimens from this part of the river; If? All you do is clear that this decrease army reenlistment in resistance of fish and begin to unfold various diseases and mutations.
Although our Ljubljanica under the protection of Natura 2000 and the Regional Park Ljubljana Moor is also nothing going on očuvanju fish in the river, probably because most of them sokrajanov not be noticed in the water, but if they have, it is usually comment to the poor state : You've all hunted by fishermen!
Well, and this is the last of the big problems to which you would like to draw attention. They are hunted down, but I do not fishermen, but fish-eating birds, which also protects the sore legislation and DOPS. Flocks of cormorants have been for many years a well-kept in our districts until just did not have nothing to eat. Now we see that they are very little occurs throughout the course of the river; according to their number in previous years; Therefore, we get an enormous amount of other feathered predators, namely white
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