Re-introduction of Atlantic salmon, Salmo salar L., to the Tadnoll Brook, Dorset

Edwards, Francois K.; Lauridsen, Rasmus B.; Fernandes, Wendy P.A.; Beaumont, William R.C.; Ibbotson, Anton T.; Scott, Luke; Davies, Cynthia E.; Jones, J. Iwan. 2009 Re-introduction of Atlantic salmon, Salmo salar L., to the Tadnoll Brook, Dorset. Proceedings of the Dorset Natural History and Archaeological Society, 130. 9-16.

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Atlantic salmon had become extinct in Tadnoll Brook, Dorset, a tributary of the Frome. Fry were reared from River Frome native stock and introduced to Tadnoll Brook. Dispersal downstream of the introduction site was high initially, through at least 1 km; despite dispersal a density of salmon parr of 8 per 100 m2 was achieved in the introduction reach. Survival was 71 % egg – fry in egg boxes, 4.1 % fry – smolt and 2.9 % egg – smolt. There were two migratory periods, in the autumn following the introduction, and in the following spring. Approximately 45 % of the surviving population remained in Tadnoll Brook for a second summer. Observed patterns were consistent with suggestions that fry and parr distribution is constrained by habitat limitation.

Item Type: Publication - Article
Programmes: CEH Programmes pre-2009 publications > Water > WA02 Quantifying processes that link water quality and quantity, biota and physical environment > WA02.4 Biological interactions
UKCEH and CEH Sections/Science Areas: Acreman
ISSN: 0070-7112
Additional Keywords: egg incubation, dispersal, re-introduction, food web, survival, growth, Salmon
NORA Subject Terms: Zoology
Ecology and Environment
Related URLs:
Date made live: 20 Oct 2009 09:00 +0 (UTC)

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