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Can we satisfactorily estimate variation in krill abundance?
: Knowledge of abundance and rates of change of abundance are basic requirements for fisheries models. Catch ... of abundance. It is less satisfactory for pelagic fisheries. Evidence is given that CPUE estimated ... from data reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... ) does not provide a realistic index of krill abundance. Recognising that there is a large natural year ... SATISFACTORILY ESTIMATE VARIATION IN KRILL ABUNDANCE?* I. Everson1 (United Kingdom) Abstract Knowledge of ... abundance and rates of change of abundance are basic requirements for fisheries models. Catch per unit ... effort (CPUE) has traditionally been used in demersal fisheries assessments as an estimator of ... reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) does not ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 375-376 : Автор(ы): Everson, I.
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Trawl selectivity for Champsocephalus gunnari
area. The trawl bags tested were made of net webbing with 3.1 mm twine and 88.2 mm mesh size. Trawling ... speed was 3.5 knots. Icefish comprised 90 to 100% of catches. The logistic selectivity curves were ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 69–75 : Автор(ы): Efanov, S.F., G.E. Bidenko and V.A. Boronin
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Selectivity parameters for Notothenia gibberifrons Lönnberg, 1905 and Champsocephalus gunnari Lönnberg, 1905 obtained during “8611 ANTARCTICA [ANTARTIDA]” expedition
different methods with a codend mesh of 68 mm were 2.87 for Notothenia gibberifrons and 3.10 for ... . Selection factors calculated following different methods with a codend mesh of 68 mm were 2.87 for ... , 1980. Working Party on Antarctic Fish Biology, Recommended Methods for Standardization of Measurements ... of Fish. BIOMASS Handbook num. 13. CCAMLR, 1986a. Informe de la quinta reunion del Comite ... J.A., 1983. Fish Stock Assessment. A Manual of Basic Methods. FAO/Wiley Series on food and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 87-105 : Автор(ы): Balguerías, E.
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Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)
Erratum For the GLMM the ‘effective degrees of ... appropriately deal with zero values of y by only excluding con- tributions of loge ijV y to the EQD when 0ijy ... = rather than excluding the whole second term in each of equations (7) and (9). Re-definitions of ... 0. ij ij ij ij I if y I if y Figure 1 gives the profile EQD for the fitted GLMM (equation 8 of ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Автор(ы): Candy, S.G