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Nephrops distribution is limited by the extent of suitable muddy sediment in which animals construct burrows. Nephrops are assessed across Europe as individual stocks in 34 functional units (FUs). This data combines the ICES functional units (based on ICES statistical rectangles), combined with the modelled extent of the muddy sediment in Scottish & adjacent waters, derived from sediment and VMS data.
The heat demand is an amalgamation of a number of different spatial datasets that have associated heat demand values. The map has been developed on the principle of applying data with increasing levels of certainty and overlaying and replacing individual property heat demand values. The heat demand layer is made up of a number of rasters which depict this demand in different ways. The heat demand rasters present a visualisation of the heat demand density by showing total demand within grid squares. These are shown at various grid sizes (50x50, 250x250, 500x500 and 1000x1000). The Scotland Heat Map is supported by a number of documents including users guidance which is available at http://www.scotland.gov.uk/heatmap 2.1 Methodology report 2.2 Manual 2.3 Metadata 2.4 Local knowledge validation & improvement process 2.5 Data management 2.6 Limitations and protections for data use and analysis 2.7 Scotland heat map – interactive and local web