DTU Aqua Institut for Akvatiske Ressourcer Plan for fiskepleje i Gudenå, delområde 2 (nedstrøms Mossø og indtil Tange) Plan nr. 73-2020 Distrikt 15, vandsystem 06 Datablad Faglig rapport nr. 73 fra DTU Aqua, Institut for Akvatiske Ressourcer, Sektion for Ferskvandsfiskeri og -økologi. Titel: Plan for fiskepleje i Gudenå, delområde 2 (nedstrøms Mossø og indtilTange) Forfatter: Michael Kaczor Holm og Andreas Svarer Udgiver: DTU Aqua, Institut for Akvatiske Ressourcer, Sektion for Ferskvandsfiskeri og -økologi© Udgivelsesår: 2020 ISSN: 1396-4739 Forsidefoto: En ½ år gammel ørred (Salmo trutta). Ørreden anvendes som indikator for miljøstilstanden i vandløb, hvor ørreder gyder. Fotograf: Bernt René Voss Grimm. Trykkeri: Rapporten er trykt af STEP. Kortet er trykt af Damgaard-Jensen A/S. Bedes citeret: Michael Kaczor Holm og Andreas Svarer. 2020. Plan for fiskepleje i Gudenå, delområde 2 (nedstrøms Mossø og indtil Tange). Faglig rapport nr. 73 fra DTU Aqua, Institut for Akvatiske Ressourcer, Sektion for Ferskvandsfiskeri og -økologi. Gengivelse tilladt med tydelig kildeangivelse. Internetversion: Rapporten og tilhørende kort er tilgængelig i elektronisk format (pdf) på www.fiskepleje.dk/planer-for-fiskepleje Indholdsfortegnelse I. Indledning ...................................................................................................................................................................... 6 Formål ............................................................................................................................................................................. 6 Anvendte metoder ........................................................................................................................................................... 7 Resultater – samlet .......................................................................................................................................................... 8 Resultater – Salten Å ................................................................................................................................................ 11 Resultater – Funder Å ............................................................................................................................................... 13 Resultater – Gjern Å ................................................................................................................................................. 15 Resultater – Borre Å ................................................................................................................................................. 17 Resultater – Alling Å ................................................................................................................................................ 18 Resultater – Tange Å ................................................................................................................................................ 20 Forslag til forbedring af de fysiske forhold .................................................................................................................. 22 Forurening .................................................................................................................................................................... 25 Fremtidig revidering af Plan for Fiskepleje .................................................................................................................. 25 Øvrige udsætningsplaner og planer for fiskepleje i distrikt 15 ..................................................................................... 26 II. Beskrivelse af de enkelte vandløb ............................................................................................................................. 27 Gudenå .......................................................................................................................................................................... 27 Hulbæk ......................................................................................................................................................................... 27 Skærå ............................................................................................................................................................................ 27 Knud Å ......................................................................................................................................................................... 28 Hyltebæk ....................................................................................................................................................................... 29 Fladskov Bæk ............................................................................................................................................................... 29 Javngyde Bæk ............................................................................................................................................................... 29 Svejdal Bæk/Nørre Vissing Bæk .................................................................................................................................. 30 Holmsbæk ..................................................................................................................................................................... 30 Skæggeskov Bæk .......................................................................................................................................................... 30 Stabel Bæk .................................................................................................................................................................... 31 Skærbæk ....................................................................................................................................................................... 31 Mosbæk ........................................................................................................................................................................ 31 Tilløb til Ravn Sø fra Hemstok Skov ............................................................................................................................ 32 Tilløb til Ravn Sø fra Nygård Skov .............................................................................................................................. 32 Marskendal Bæk ........................................................................................................................................................... 32 Vandløb nord for Rønnebo ........................................................................................................................................... 32 Vandløb ved Birkehede (Alling Bæk) .......................................................................................................................... 33 Kærsmølle Bæk (Anbjerg Bæk) ................................................................................................................................... 33 Tilløb til Kærsmølle Bæk (Skeldal Bæk) ...................................................................................................................... 33 Flere mindre tilløb i Linå Vesterskov ........................................................................................................................... 34 Vandløb øst for Hattenæs (Hattenæs Bæk) ................................................................................................................... 34 Skærbæk (Salten Å) ...................................................................................................................................................... 34 Salten Å ........................................................................................................................................................................ 35 Lillebæk ........................................................................................................................................................................ 35 1 Sillerup Bæk ................................................................................................................................................................. 36 Tilløb til Salten Å ved Vrads Sande ............................................................................................................................. 36 Dalbæk .......................................................................................................................................................................... 37 Nimdrup Bæk ............................................................................................................................................................... 37 Bryrup Å ....................................................................................................................................................................... 38 Lystrup Å ...................................................................................................................................................................... 38 Rodvigsballe Bæk ......................................................................................................................................................... 39 Tilløb fra Slagballe ....................................................................................................................................................... 39 Kringelbæk ..................................................................................................................................................................