However,
Fish: fishermen neuchâtel lake survival new: For example. Furthermore,
Fish: fishermen neuchâtel lake survival:
Lack of fish
Neuchâtel lake fishermen are in survival mode – Fish: fishermen neuchâtel lake survival
Water quality. Similarly, Quagga mussels, soft temperatures and cormorants got the better of poles, blood cells and pale. In addition, Professionals call for help.
Professional fisherman based in Hauterive (NE). However, Samuel Progin testifies to the collapse of fish populations.
Marie-Lou Dumauthio/Tamedia
- The fishermen of the Neuchâtel lake face a historical collapse of fish populations.
- Cormorants consume more than 500 tonnes of fish during the summer season.
- The invasive Quagga mold seriously disturbs the lake ecosystem.
- Global warming modifies the fish: fishermen neuchâtel lake survival reproduction periods of lake species.
“It has been seven years since the fishermen of lac De Neuchâtel are crying for the Dèche. In addition, it is free fall, question volumes of fish. Nevertheless, ” With his outspokenness, Denis Junod is, at 72, the dean of fish: fishermen neuchâtel lake survival new his corporation. Furthermore, He still throws his nets, out of passion, and also by necessity. In addition, “We don’t have huge pensions. Therefore. Furthermore, but at least I was able to live from my job, which is not the case with my son, who practices it in survival mode.”
When it started, fifty years ago, they were 85. Similarly, Today, 31 professional fishing permits are issued. Furthermore, “And only five or six young people,” sighs the fisherman d’Auvernier. Moreover, He saw the populations of fish collapse, with acceleration for seven years. Meanwhile. Furthermore, fish: fishermen neuchâtel lake survival “The Coregones have almost disappeared, more packed, no more slums, just a little poles and a little pike.”
Based HauteriveSamuel Progin confirms: “Fishing has become very complicated for years. For example, and this year, it is the summit fish: fishermen neuchâtel lake survival new of the blues. Furthermore, With, icing on the cake, the damage inflicted by cormorants. Moreover. Similarly, ” With 1,250 couples identified by ornithologists, who each year in May have two to three small ones, that is about 6000 cormorants.
For Samuel Progin. the Cormoran is one of the major officials of the shortage.
Marie-Lou Dumauthio/Tamedia
“They each eat 500 grams of fish per day. Nevertheless. or three fish: fishermen neuchâtel lake survival new tonnes, which is equivalent to 540 tonnes of fish for the six months from May to the end of October,” he says. In addition. The whole fauna is impacted, including upscale Greebes and other carnivorous fish, who see the volumes available are drastically reduced. Similarly, ”
Fish: fishermen neuchâtel lake survival new
Fish: fishermen neuchâtel lake survival
Little helped fishermen
Fishermen too. Nevertheless, Admittedly. Meanwhile. they receive 10,000 francs per year, but only in compensation for what the cormorants come to fly in their nets, which represents only 6% of fish: fishermen neuchâtel lake survival the total volume of fish ingested by this volatile, according to a study by the Aquarius office.
Wild fish belongs to the first one that catches it. “As it is not considered an damage. there is no compensation, while it is precisely fish: fishermen neuchâtel lake survival new the node of the problem with the cormoran,” regrets Samuel Progin. A normal turnover is 100,000 to 120,000 francs, he sums up. Now, it’s more between 50,000 and 60,000. And as there are always fixed costs which cover 50% of the figure, this gives us 30,000 francs, or 2500 francs per month. ”
We can cut down the cormorants of the 1is September to the end of February. but it is insufficient. he believes: “On the one hand, it is not during these months that they eat the most, and, on the other hand, the fish fish: fishermen neuchâtel lake survival are at a depth where the cormorants cannot catch them, because they rarely plunge lower than 25 meters while the fish are at -30 meters.”
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According to the law, the cormoran is protected from 1is March to August 31, but exceptions are possible. On Lake Bienne, it was for example possible to draw them all year round in 2023 and 2024. The cantons of Neuchâtel. Vaud. Friborg, all three residents of the lake, made a request in this direction to the Federal Environment Office, and await an answer this fall.
This problem fish: fishermen neuchâtel lake survival is new. In the early 2000s, there was no cormorants. They were about 200 couples in 2007, and five times more today.
Fish: fishermen neuchâtel lake survival new
Fish: fishermen neuchâtel lake survival
Lake colonized by the Quagga fish: fishermen neuchâtel lake survival new mold
Denis Junod points to another threat. the Quagga mold. an invasive species which has gradually colonized Swiss lakes since its appearance in the Rhine ten years ago. “It proliferates quickly. each releases a million larvae. and they eat all the plankton, in depth, since they nest at less than 100-120 meters.”
The problem is that they feed on phytoplankton in large quantities, weakening the entire food chain. “The species of indigenous molluscs. such as the mule. anodont of the swans, have however disappeared, we no longer see the long furrows they left,” he adds.
Samuel Progin knew that his morning fishing would not be miraculous. stresses that this year is particularly difficult.
Marie-Lou Dumauthio/Tamedia
And all this in “too clean” waters. The balance is delicate: an excess of phosphates. nitrates grows too much algae. until blocking light, what is called the turbidity of the water, while a lack causes the fish: fishermen neuchâtel lake survival disappearance of nutrients.
Lacking in phosphates
At the height of pollution, in the 1970s and 80s, there were phosphate levels of 40 micrograms per liter. But today water treatment, since the ban on phosphates in detergents in 1986, has lowered this rate. It fish: fishermen neuchâtel lake survival new was 5 micrograms per liter in the lake of Neuchâtel in 2023. “There is always native phosphorus in the sediments, but more in sufficient quantity.” However. these phosphates. with nitrogen, present naturally, are essential for the development of phytoplankton, then zooplankton, in short from the whole food chain.
“Below 10 to 15 micrograms, a lake produces almost no more fish mass,” says Samuel Progin. With a rate of 1 microgram, Lake Brienz, in the canton of Bern, is thus almost empty.
Finally. there are the effects fish: fishermen neuchâtel lake survival of global warming, which delays water cooling in the fall. “In November, the air temperature is sometimes still 20 degrees,” observes Samuel Progin. Late lukewarmness of water could have an impact on zooplankton. And over reproduction periods: “La Bondelle for example. which fray by less than 80-100 fish: fishermen neuchâtel lake survival new meters. normally in January, tends to do so at the end of February, early March, and the Palée, whose frai period is normally in December, by zero at -5 degrees, can also be disturbed.”
Eat other fish
However, some species accommodate better changes in water and temperatures. This is the case of cyprinids. such as the Prussian carp, the tanche and the Rotengle, growing – the avengeon being a little more difficult. Lacustre trout reappears. thanks to the efforts of the Fauna guards for the development of the rivers where it reproduced in December. fish: fishermen neuchâtel lake survival The percids on the other hand suffer, due to the water (not enough phosphates). This is the case with the pole. The Pandere is more present in Lake Morat, where water is “less pure”.
In high growth, the catfish does not have specially popular flesh. But that could change.
Marie-Lou Dumauthio/Tamedia
Rest the catfishin strong growth, which could kindly replace Corégones, provided that customers accept it. “Weighing from 2 to 20 kilos. fat. which can have a muddy taste, is still well separated from the flesh, and you can cut beautiful nets in the back and the flanks,” explains Samuel Progin. You get firm. delicious flesh. fish: fishermen neuchâtel lake survival new comparable to that of the cod, which can also be smoked cold or prepare in the form of foam. ”
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Fish: fishermen neuchâtel lake survival new
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