While Atlantic salmon (Salmo salar L.) spawn in late autumn/early winter, their return migration to freshwater from the sea can occur at any time during the year. The diversity in the run timing of Atlantic salmon (defined as the time of return...

Recently, a genetic tool has been developed that characterises the different run timing components in Atlantic salmon, more specifically the early run. Here, we apply this tool to estimate the early running component of juvenile Atlantic salmon...

This report describes a survey carried out on Tarbert Bank in 2023 to estimate the densities and sizes of razor clams, Ensis siliqua and Ensis magnus. The survey was conducted as part of the Scottish Government’s electrofishing scientific trial (...

In the course of its environmental monitoring activities, the Scottish Government’s Marine Directorate collects a large amount of underwater video to, for example, obtain information on the numbers of fish in rivers or on species living on the...