Primary tabs

Formal report series, containing results of research and monitoring carried out by Marine Scotland Science

License

UK Open Government Licence (OGL)

Other Access

The information on this page (the dataset metadata) is also available in these formats.

JSON RDF

via the DKAN API

Assessing the status of Scottish Atlantic salmon (Salmo salar L.) stocks using reported catch data: a modelling approach to account for catch and release in the rod and line fishery

doi: 
10.7489/1556-1

Scottish Marine and Freshwater Science Vol 5 No 11

This report describes a modelling approach which has been developed to correct the reported catch of Scottish rod fisheries by accounting for recaptures associated with these data. In the absence of direct counting systems, the abundance of Atlantic salmon stocks in Scotland is generally estimated indirectly using reported rod fishery data. The widespread adoption of catch and release in Scottish rod fisheries provides a challenge for such assessment techniques, however, as a proportion of fish released from the rod fishery may be re-caught and hence inflate the catch statistics by appearing in the reported data more than once.

Citation: 
Smith, G.W., Middlemas, S.J., MacLean, J.C. (2014) Assessing the status of Scottish Atlantic salmon (Salmo salar L.) stocks using reported catch data: a modelling approach to account for catch and release in the rod and line fishery. Scottish Marine and Freshwater Science Vol 5 No 11. Edinburgh: Scottish Government, 16pp. DOI: 10.7489/1556-1
FieldValue
Publisher
Modified Date
2015-02-09
Release Date
2015-02-09
Identifier
049b6dcc-de30-4914-a8a5-88fe5f979066
Spatial / Geographical Coverage Location
Scotland
License
UK Open Government Licence (OGL)
Author
G.W. Smith
Data Dictionary

The number of recaptures is modelled using estimates of exploitation rate, retention rate in the rod fishery and mortality following release. Model output at a range of notional exploitation rates was compared with reported catch over the period 1994 (when catch and release was first reported within the fishery) to 2013.

Contact Name
Marine Scotland Science
Contact Email
Public Access Level
Public