Norway Lobster (Nephrops norvegicus) - Underwater TV-assessed burrow density (average of burrows) 2007-2016 (time-aware)

Scottish underwater TV surveys to estimate Nephrops burrow distribution and abundance, from Nephrops Functional Units of significance to Scotland. Underwater TV footage is taken at specified stations within Functional Units. The underwater camera is mounted on a towed sledge and tow duration is 10 minutes. Records of Nephrops burrows, Nephrops and other benthic fauna is recorded onto DVD for analysis and review. At each station, a custom built sledge is towed along the sea bed and all Nephrops burrow complexes are counted and used to derive density estimates. These estimates are shown in this data layer.