This document describes the user requirements for the fisheries ontologies lifecycle, related knowledge tools and fisheries stock depletion alert system. The document provides an overview of the Work package 7 (Chapter 1), and of the fisheries domain and data (Chapter 2). It introduces the Ontology-based Fisheries Stock Depletion Alert System components (Chapter 3), and the user requirements for: (a) the fisheries ontologies lifecycle (Chapter 4), and (b) the ontology driven Fisheries Stock Depletion Alert System (FSDAS) (Chapter 5).