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Publication - Research and analysis

Developing essential fish habitat maps: report

Published
22 May 2023
From
Director of Energy and Climate Change, +3 more … Director of Marine, Director of Offshore Wind, Director-General Net Zero
Directorate
Offshore Wind Directorate, +2 more … Energy and Climate Change Directorate, Marine Directorate
Topic
Energy, Environment and climate change, Marine and fisheries
ISBN
9781804357057

The project helped define areas of the sea essential to fish for spawning, breeding, feeding, or growth to maturity. Twenty-nine species and multiple life-stages were reviewed covering marine fish and shellfish of commercial and ecological importance, relevant to offshore wind development areas.

View supporting documents Supporting documents

Appendix D. Confidence results for the data-based EFH models

A summary of the confidence scores assigned to the different confidence elements of the overall confidence assessment are provided in Table D1. All scores are standardised over 0-1 range, with higher values indicating higher confidence.

Table D1. Summary scores for overall confidence assessment (all scores range 0-1). Cm, model statistical performance (F1 score); Cf, confidence associated with the fish survey data used to calibrate the model; Ce, confidence associated with the set of environmental layers used to predict the model.
Species, life stage Cm Cf Ce Confidence overall
Lesser sandeel, any 0.78 0.8 0.76 0.61
Nephrops, any 0.59 0.875 0.77 0.49
Plaice, juvenile 0.7 0.925 0.85 0.62
Lemon sole, juvenile 0.67 0.925 0.81 0.58
Common sole, juvenile 0.66 0.925 0.79 0.57
Anglerfish, juvenile 0.79 0.725 0.91 0.65
Whiting, juvenile 0.5 0.95 0.70 0.41
Whiting, spawning 0.42 0.9 0.83 0.36
Cod, spawning 0.49 0.8 0.86 0.41
Haddock, spawning 0.63 0.9 0.76 0.52
Norway pout, spawning 0.53 0.9 0.79 0.45
Blue whiting, juvenile 0.71 0.95 0.73 0.60
Hake, juvenile 0.48 0.95 0.76 0.41
Sprat, juvenile 0.64 0.8 0.79 0.51
Mackerel, juvenile 0.33 0.8 0.80 0.26
Mackerel, egg 0.4 0.85 0.73 0.32
Long finned squid, juvenile 0.49 0.95 0.76 0.42

Detailed tables for these scores (e.g. including intermediate scores for individual environmental data layers and reasons behind the score) are provided separately as an Excel worksheet "Confidence tables" as they are too big for visualisation in a Word document

Contact

Email: ScotMER@gov.scot

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