Marine_Scotland_FishDAC_12384 eng dataset Scottish Government (Marine Scotland) +44 (0)300 244 4000 marinescotland@gov.scot pointOfContact 2021-08-24 MEDIN Discovery Metadata Version 2.3.7 urn:ogc:def:crs:EPSG::4326 OGP Weekly counts of Atlantic salmon (Salmo salar) emigrant smolts captured in the Kinnaber Mill Trap, River North Esk (1975-2013) 2021-08-24 publication Marine_Scotland_FishDAC_12384 The River North Esk enters the North Sea in eastern Scotland. Wild Atlantic salmon (Salmo salar) have been monitored on this river since the 1960s. A proportion of emigrant smolts were captured in a trap on the Kinnaber Mill Lade situated off the lower reaches of the North Esk (WGS N56:44:51, W2:27:16). Weekly counts of captured individuals are provided for the years 1975 - 2013. 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 unknown Marine Environmental Data and Information Network Fish abundance in water bodies SeaDataNet Parameter Discovery Vocabulary 2018-12-12 revision Fish SeaDataNet Agreed Parameter Groups 2017-05-03 revision The following attribution statement must be used: Contains information from the Scottish Government (Marine Scotland) licensed under the Open Government Licence v3.0. otherRestrictions no limitations to public access 200.00 eng biota environment inlandWaters -2.454393 -2.454393 56.74711 56.74711 SeaDataNet vertical extent keywords 2010-01-01 revision There is no appropriate value 1975-04-01 2013-05-28 https://data.marine.gov.scot/dataset/spatio-temporal-variability-scottish-smolt-emigration-times-and-sizes Reference info #0 https://onlinelibrary.wiley.com/doi/10.1111/gcb.12363 Reference info #1 https://dx.doi.org/10.7489/12384-1 DOI:https://dx.doi.org/10.7489/12384-1 https://doi.org/10.7489/12384-1 download dataset A proportion of the smolts emigrating from the river in spring were captured in a fish trap situated in a diversionary lade (~500 m upstream from the tidal limit) as part of a programme to estimate total smolt production. The trap was operated throughout the smolt run between late March and early July each year. The lade diverted a proportion of total emigrant smolts (typically 5% - 10% depending on flow conditions) and the trap was considered to be 100% efficient within the lade except in rare cases of spillage. In autumn 2013, damage to the dyke which diverted water into the lade caused trapping at this facility to be stopped. Weekly counts of smolts at the trap collected between 1975 and 2013 are considered to be robust, with similar levels of effort, and protocols, employed throughout the time series. However, note that the proportion of smolts captured was negatively related to river flow within the season; as this was not corrected for in the data, the weekly counts do not equate to total smolt production.