F4requirements in relation to research surveys at sea;

thresholds below which it is not mandatory F5to collect data based on fishing and aquaculture activities.

biological data on all stocks caught or by-caught in F6... commercial and, where appropriate, recreational fisheries in and outside F7United Kingdom waters, including eels and salmon in relevant inland waters, as well as other diadromous fish species of commercial interest, to enable an ecosystem-based approach to fisheries management and conservation as necessary for the F8regulation and management of fishing activities;

data to assess the impact of F9fisheries within United Kingdom waters on the marine ecosystem in and outside F10United Kingdom waters, including data on by-catch of non-target species, in particular species protected under F11any law applying in the United Kingdom or any part of it or international law, data on impacts of fisheries on marine habitats, including vulnerable marine areas, and data on impacts of fisheries on food webs;

data on the activity of F12United Kingdom fishing vessels in and outside F13United Kingdom waters, including levels of fishing, and on effort and capacity of the F14United Kingdom fleet;

socioeconomic data on fisheries to enable the socioeconomic performance of the F15United Kingdom fisheries sector to be assessed;

socioeconomic data and sustainability data on marine aquaculture to enable the socioeconomic performance and the sustainability of the F16United Kingdom aquaculture sector, including its environmental impact, to be assessed;

socioeconomic data on the fish processing sector to enable the socioeconomic performance of that sector to be assessed.

the information needs for the management and efficient F20regulation of fishing activities, with a view to F21contributing to the achievement of the fisheries objectivesF22...;

the need for data that are relevant, comprehensive and reliable for the purpose of decisions on fisheries management and protection of ecosystems including vulnerable species and habitats;

the need for and relevance of data for the sustainable development of aquaculture F23..., taking account of the predominantly local character of its impacts;

the need to support impact assessments of policy measures;

costs and benefits, taking account of the most cost-effective solutions to achieve the objective of data collection;

the need to avoid disruption of existing time-series;

the need for simplification and to avoid duplication of data collection, in accordance with Article 1;

where relevant, the need for data to cover data-deficient fisheries;

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

the international obligations of the F25United Kingdom;

spatial and temporal coverage of the data collection activities.

information needs for the F27regulation and management of fishing activities, with a view to F28contributing to the achievement of the fisheries objectives;

information needs arising from internationally agreed coordination and harmonisation;

information needs for the evaluation of management plans;

information needs for the monitoring of ecosystems variables;

information needs for an adequate coverage of stock areas;

the need to avoid duplication between research surveys at sea; and

the need to avoid disruption of time-series.