Invisible catch: A century of bycatch and unreported removals in sea fisheries, Belgium 1929-2010

摘要: Abstract Publicly reported statistics on the production of fisheries refer to ‘landings’ as opposed ‘catch’. However, well-informed decisions and evaluation impacts ecosystems must be based total removals, so including part catch that is discarded at sea or not landings. Total removals by Belgian from all ICES fishing areas North Sea (BNS) 1929 2010, were reconstructed unreported misreported landings commercial fleet, recreational artisanal/subsistence estimating discards for most important fisheries. estimated 5.2 million t 42% higher than 3.7 million t publicly over this period. Unreported represent respectively 3.5% (0.2 million t) 26% (1.3 million t) these removals. The BNS 55% 0.8 million t Discards an average annual 34% entire results suggest since 2000s, approximately 50% its EEZ are (IUU). increasingly taken non-commercial, small-scale (