{"refrec":{"BRefID":3272,"RR":"<b>Redant, F.; De Clerck, R.</b> (1984). Diurnal variations in CPUE and length composition of the catches in a <i>Nephrops</i> directed fishery in the Central North Sea. <i>CM Documents - ICES</i>, C.M. 1984(K:3). International Council for the Exploration of the Sea: Copenhagen.  9 + tables + figures pp.","BEntID":3272,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>CM Documents - ICES</i>, C.M. 1984(K:3). International Council for the Exploration of the Sea: Copenhagen.  9 + tables + figures pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Redant, F.; De Clerck, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Redant, F.; De Clerck, R.","Englishabstract":"The report describes the Belgian <i>Nephrops</i> directed fishery in the Central North Sea (Botney Gut-Silver Pit area) and analyzes the diurnal variations in CPUE and catch composition of several commercial <i>Nephrops</i> trawlers operating in this area. Peak CPUE-values were generally obtained after dawn and before dusk. Some anomalies however did occur. These are discussed in relation to the natural variations in light intensity on the sea floor and the food requirements of <i>Nephrops</i>. There was no evidence of significant changes in the length composition of <i>Nephros</i> taken at different times of the day. 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