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Stub W.svg		Dësen Artikel ass eréischt just eng Skizz. Wann Dir méi iwwer dëst Thema wësst, sidd Dir häerzlech invitéiert, aus dëse puer Sätz e richtegen Artikel ze schreiwen. Wann Dir beim Schreiwen Hëllef braucht, da luusst bis an d'FAQ eran.


Frelleweieren zu Aldudes.


E Frelleweier ass e kënschtlech ugeluechte Weier, an deem d'Frellen opgezillt ginn an duerno erëm erausgeholl gi fir ze verkafen, sief et fir de Liewensmëttelhandel, oder fir a Baachen auszesetzen. De Weier u sech selwer ass awer nëmmen d'Endphas vun der Frellenzuucht. En ënnerscheet sech vun anere Fëschweieren duerch seng längelzeg Form.


D'Längt an d'Breet vum Weier mussen op de Wasserzoufloss ofgestëmmt sinn, an zwar sou, datt eng gutt Duerchstréimung vum Weier garantéiert ass. Eng Stréimungsvitesse vun 1 m/s, wat dem Wäert vun enger Frellebaach an der Natur entsprécht, ass nëmmen z'erreeche wann de Weier sou vill wéi méiglech enger Baach gläicht.


D'Stréimung ass wichteg fir datt d'Frell sech am Weier scho sou muss behuelen, wéi wann se an an enger Baach géif schwammen, fir datt s'eng staark Muskulatur opbaue kann, déi hir et méiglech mécht, sech sou séier wéi méiglech, no dem Aussetzen an eng natierlech Baach, un déi nei Situatioun unzepassen. Fir den Handel garantéiert et eng Produktioun vun engem feste Fleesch.


Dat gëtt zanter de 70er Joren duerch de Bau vu Kanäl erméiglecht déi zwar ausbetonnéiert sinn, soss awer sou gutt wéi méiglech d'Charakteristike vun enger Baach hunn. D'Iddi dovun ass zwar méi al, Millegrief déi nodeem d'Millen net méi geschafft huet goufen dacks als Weier, oder als als Zoulaf vu méi Weiere benotzt. Op en etleche Plaze goufen sou Weieren och scho fréier, ganz einfach am Bett vun enger Baach oder engem Floss ugeluecht.


Wann sou e Bau net méiglech ass, meeschtens well et un der néideger Plaz feelt, aus wirtschaftleche Grënn, oder wéinst dem Waasserrecht, musse beim Bau Mindestkritere mat agerechent ginn. Temperatur vum Waasser am Weier soll wa méiglech ëmmer déiselwecht sinn, ideal sinn ëm déi 10° Celsius an de Sauertoffgehalt däerf net ze déif falen. Dëst ass nëmme méiglech wann d'Waasser sech am Laf vum Dag dacks genuch erneiert. E Minimum ass dräimol. Frelleweieren däerfen dofir och net hannereneen ugeluecht ginn, well all Weier wéinst der Temperatur op dat frëscht Waasser aus der Baach ugewisen ass.


E gutt Beispill dofir sinn d'Fëschweieren zu Fëschbech op der Schmëdd.


D'Gréisst vum Weier hänkt haaptsächlech vum Waasserzoufloss of. Dësen ass besonnesch wichteg an der waarmer Joreszäit, wa mat vill Verdonstung ze rechnen ass.



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