Obiettivo Stock assessment of demersal fish in the ICES area generally relies on Virtual Population Analysis (VPA). The main data sets in this kind of analysis are derived from catch statistics and samples from commercial catches, that tend to be unreliable, as well as from scientific surveys.The scientific trawls used to sample demersal fish are normally slightly modified commercial trawls that generally have a bad geometrical stability as well as important herding effects that tend to introduce additional bias in absolute and also relative density indices. The present proposal therefore aims at providing the strategy for designing a non-herding demersal survey trawl, primarily to provide representative samples, but ultimately to provide absolute density estimates. Programma(i) FP5-LIFE QUALITY - Specific Programme for research, technological development and demonstration on "Quality of life and management of living resources", 1998-2002 Argomento(i) Data not available Invito a presentare proposte 0 Vedi altri progetti per questo bando Meccanismo di finanziamento Data not available Coordinatore IFREMER - TMSI/TP Contributo UE Nessun dato Indirizzo 8, rue Franzois Toullec LORIENT Francia Mostra sulla mappa Costo totale Nessun dato Partecipanti (2) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto INSTITUTE OF MARINE RESEARCH Norvegia Contributo UE Nessun dato Indirizzo PO Box 1870 Nordnesgaten 33 BERGEN Mostra sulla mappa Costo totale Nessun dato NATIONAL CENTRE FOR MARINE RESEARCH Grecia Contributo UE Nessun dato Indirizzo Aghios Kosmas Hellinikon ATHENS Mostra sulla mappa Costo totale Nessun dato