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Conon 2017: Impact of impounded waterbodies on Atlantic salmon smolt migration
Orrell, D., Newton, M., Honkanen, H., Adams, C. (2017) Survival and movement behaviour of Atlantic salmon smolts (Salmo salar L.) migrating through impounded lakes and natural standing waters.

Availability: Unrestricted after moratorium period
Data are initially restricted, but the access condition relaxes to academic or unrestricted once a specified period of time after an event (such as collection, publication, completion of QC procedures or project cessation) has elapsed

Juvenile Atlantic salmon (Salmo salar L.) smolts were tracked through two lakes impounded by large hydropower dams, and one natural standing water located in the River Conon system. Eighty smolts were tagged with acoustic transmitters and were tracked for an eight-week period from May to June 2017. High mortality rates were found between the river release location and the three lakes; Loch Garve (25% km-1), Loch Meig (28% km-1) and Loch Achonachie (10% km-1) which was likely the result of predation. Modelling showed that successful lake migration was lower if the lake was impounded, and if individuals were migrating earlier in the study period. Modelling found that successful migration (river release to estuary) was lower if the lake was impounded, and if fish were travelling in smaller release groups.

Biology > Fish, Fisheries > Fish stocks/catches/taggings
Marine/Coastal, Acoustic telemetry, Atlantic salmon (Salmo salar), ANE, British Isles, Scotland, Pisces

Geographical coverage
ANE, British Isles, Scotland [Marine Regions]

Temporal coverage
1 April 2016 - 1 July 2016
Quasi continuous (< 1 min.)

Taxonomic coverage
Pisces [WoRMS]

University of Glasgow, moredata creator

Related datasets
Parent dataset:
European Tracking Network (ETN) data, more

Dataset status: In Progress
Data type: Data
Data origin: Research: field experiment
Metadatarecord created: 2018-02-28
Information last updated: 2018-03-05
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