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Spawning activity of European grayling (Thymallus thymallus) driven by interdaily water temperature variations: Case study Gr. Mühl River/Austria
Interdaily water temperature variations were studied at a known spawning site of European grayling (Thymallus thymallus) in the Große Mühl River, Austria. Spawning activity was visually observed from a bridge where spawners were counted and their activity/behaviour documented twice a day. The spawning of grayling was documented for a temperature range of 7.8–11.5°C. Analysis of the collected data showed that spawning activity increases significantly when water temperatures rise during a day. In addition, the results showed a significant response in the relative water temperature increase, which was +3.5°C on average; however, the absolute temperature between periods of non‐activity and spawning activity exhibited no significant differences.
Spawning activity of European grayling (Thymallus thymallus) driven by interdaily water temperature variations: Case study Gr. Mühl River/Austria
Interdaily water temperature variations were studied at a known spawning site of European grayling (Thymallus thymallus) in the Große Mühl River, Austria. Spawning activity was visually observed from a bridge where spawners were counted and their activity/behaviour documented twice a day. The spawning of grayling was documented for a temperature range of 7.8–11.5°C. Analysis of the collected data showed that spawning activity increases significantly when water temperatures rise during a day. In addition, the results showed a significant response in the relative water temperature increase, which was +3.5°C on average; however, the absolute temperature between periods of non‐activity and spawning activity exhibited no significant differences.
Spawning activity of European grayling (Thymallus thymallus) driven by interdaily water temperature variations: Case study Gr. Mühl River/Austria
Hauer, Christoph (author) / Unfer, Günther (author)
River Research and Applications ; 37 ; 900-906
2021-07-01
7 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 1996