Skip to main content

PDF


Title: Analysis of growth and survival of sea trout from the Welsh Dee: Interim Report, 2nd April 2000
Author: Atlantic Salmon Trust
Document Type: Monograph
Abstract:
The main aim of the project is to examine processes of growth and survival in sea trout from the Welsh Dee - utilising an 8-year (1991-98) time-series of data collected from returning adult fish captured at Chester Weir fish trap. These data include: i. Estimates of annual run size for .0+SW and >.0+SW fish - these were derived from tagging and recapture (12 months later) at Chester Weir (see, for example, Table 1); ii. Freshwater and marine age — taken from scale readings from around 10,000 fish; iii. Measured length and weight - recorded for a similar sample size to the above. In order to explore freshwater (juvenile) as well as marine (adult) growth processes, measurements from a sub-sample of maiden 0+ and 1+ adult scales were used to back-calculate pre- and post-smolt lengths (the Dee has no facility for sampling sea trout smolts). This was a major component of the project and provided a significant amount of additional data with measurements taken from over 2,000 scales.
Publisher: Environment Agency
Publication Date: 2000
Publication Place: Bristol
Subject Keywords: TroutGrowthSurvivalMigrationFreshwater fishesSea waterFisheriesLengthScalesPopulation structure
Geographic Keywords: WalesDee (Wales)
Taxonomic Keywords: SalmonidaeSalmo trutta
Extent: 9
Permalink: http://www.environmentdata.org/archive/ealit:4307
Total file downloads: 60

Download PDF    Display PDF in separate tab