Atlantic Ocean 1 Biodiversity 1 Cluster analysis 1 Conservation 1 Descriptor 1 1 Descriptors 1 Environmental protection 1 European Union 1 Fish 1 Fish fauna composition Fish species 1 Framework directives 1 Indicator development 1 Indicator indicator 1 Marine Strategy Framework Directive 1 Marine strategy framework directive 1 North East Atlantic 1 North Sea 1 OSPAR 1 Pisces 1 Planning 1 assessment method 1 biodiversity 1 life history trait 1 pelagic environment 1 pelagic fish 1 policy development 1 sensitivity analysis 1 standard (regulation) 1 strategic approach 1