Marine_Scotland_FishDAC_1017 eng dataset Scottish Government (Marine Scotland) +44 (0)300 244 4000 marinescotland@gov.scot pointOfContact 2022-09-08 MEDIN Discovery Metadata Version 2.3.7 urn:ogc:def:crs:EPSG::27700 OGP Girnock and Baddoch: Emigrant Numbers by Year of Emigration 2015-03-18 publication Marine_Scotland_FishDAC_1017 The Girnock and Baddoch catchments are long-term monitoring sites where the population dynamics of spring salmon have been assessed since 1966 and 1988 respectively. These sites include a pair of fixed traps designed to catch returning adult salmon and descending juvenile emigrants. The descending traps are whole river traps based on a modified Wolf trap, and operate on permanent weirs. They are routinely operated in both autumn and spring, providing counts of emigrant salmon. Trap protocols have been similar, although not identical, over this long period. Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot pointOfContact Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot custodian Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot distributor Marine Scotland +44 (0)300 244 4000 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot originator Annually Marine Environmental Data and Information Network Fish SeaDataNet Agreed Parameter Groups 2017-05-03 revision Environment SeaDataNet Parameter Disciplines 2017-02-03 revision Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/) otherRestrictions no limitations to public access 55000.00 eng biota environment inlandWaters -4 -3 57 57.5 ICES Rectangles 1910-01-01 creation 43E6 SeaDataNet vertical extent keywords 2010-01-01 revision The correct value is not known to, and not computable by, the sender of this data. However, a correct value probably exists. 1966-01-01 2022-10-28 https://dx.doi.org/10.7489/1017-1 DOI:https://dx.doi.org/10.7489/1017-1 https://data.marine.gov.scot/dataset/girnock-and-baddoch-emigrant-numbers-year-emigration download dataset Juvenile salmon are caught in the descending emigrant traps at the Girnock and Baddoch Burns in autumn and spring. Salmon are considered to be smolts if they emigrate between the 1st of January and the 31st of May, and autumn parr if they leave between the 1st of September and the 31st of December. Counts of juvenile salmon are presented by year of capture in the trap. Data were collated from historic trap books and paper files from 1966 to 1989, and were recorded electronically from 1990 to present. All data were imported into a central Marine Scotland Science database (FishObs). The smolt data at the Girnock and Baddoch are considered to be robust and have been collected in a similar way, with a similar level of effort over the monitoring period. Counts of autumn emigrants were affected by low trap effort at the Girnock in a few years in the 1980s. Counts from some of these years have been corrected for effort (see Bacon et al. for details), other years were affected by such low effort that they are considered unusable and have been removed from the dataset. For full details of the data and the correction process, see Bacon PJ, Malcolm IA, Fryer RJ, Glover RS, Millar CP, and Youngson AF. (in press). Can conservation stocking enhance juvenile emigrant production in wild Atlantic Salmon (Salmo salar)? Transactions of the American Fisheries Society.