Results 161 to 170 of about 2,392 (194)

Improving comparisons between models for CPUE

Fisheries Research, 2009
In a recent article published in this journal, Shono (2008) discuss an issue of great relevance in fisheries: how to model catch per unit effort (CPUE). CPUE data are non-negative and severely skewed right, suggesting gamma or log-Normal models. However, often no fish are caught, which produces exact zeros in the data and neither a gamma or log-Normal ...
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Standardising the CPUE for the Illex argentinus fishery in the Southwest Atlantic

Fisheries Science, 2009
The catch per unit effort (CPUE) is a widely used index for assessing the abundance of exploited populations in fishery management. To obtain appropriate CPUE values, it is essential to standardise catch-effort data from fisheries. This task is particularly important for squid fisheries because squid generally have a short life-span and are vulnerable ...
Chen, CS, Chiu, TS
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Statistical Models for Estimating CPUE from Catch and Effort Data

Canadian Journal of Fisheries and Aquatic Sciences, 1992
Catch-per-unit-effort (CPUE) provides one of the most commonly used abundance indices in fishery research. The literature, however, offers no unique method of estimating CPUE and its variance from catch and effort data. In this paper we develop two models (univariate and bivariate) that generalize previous approaches and remain valid under management ...
Laura J. Richards, Jon T. Schnute
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A re-analysis of the squid jig CPUE data

2006
The catch per unit effort (CPUE) indices from the squid jig fishery have to date been expressed in terms of catch per man-hour (Roel, 1998). Industry has for many years questioned the use of man-hours as the unit of effort since it is alleged that the information contained in the database regarding the number of hours fished is unreliable.
Glazer, Jean Patricia, Butterworth, Doug S   +1 more
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A multispecies approach to subsetting logbook data for purposes of estimating CPUE

Fisheries Research, 2004
Abstract An initial step in catch and effort analysis is determination of what subset of the data is relevant to the analysis. We propose an objective approach to subsetting trip records of catch and effort data when fishing locations are unknown; the species composition taken on a fishing trip is used to infer if that trip's fishing effort occurred ...
Andi Stephens, Alec MacCall
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Coastal community CPUE standardization in the Galician Small-Scale Fishery

2015
No abstracts are to be cited without prior reference to the author.Small-scale fisheries (SSFs) are usually under-attended despite being a large contributor to globalcatches, and of relevance for local economies and society. This is in part due to the paucity ofappropriate information preventing the assessment and management of key species.
Otero, Jamie, Fernández, Alexandre Alonso, Díaz, Rafael Bañón, Álvarez, José Manuel Campelos, Fernández, Fernando Quintero   +4 more
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Analysis of CPUE data time-series for Latvian fishing fleet.

2013
No abstracts are to be cited without prior reference to the author. Latvian fishery in the Baltic Sea is based on three main species – cod, sprat and herring. Sprat is one of the most abundant and commercially important fish species for Latvian fishermen. Sprat landings during 2000-2012 contributed about 60% to total Latvian catch.
Ozernaja, Olga, Svecovs, Fausts, Fettere, Marina, Ustups, Didzis   +3 more
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Summary of status and CPUE indicators for ETBF target species

2022
Hill, Nick, Tremblay-Boyer, Laura, Williams, Ashley   +2 more
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GLM and GLMM standardisation of the commercial abalone CPUE for Zones A-D

2012
This paper presents an update of the standardisation of the abalone CPUE using the conventional GLM approach and adding new data for the 2010/2011 fishing in Zones A and B. A GLMM approach to standardising abalone CPUE data is also investigated.
Brandão, Anabela, Butterworth, Doug S
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Nominal longline CPUE from Gough and Nightingale lobster fisheries

2008
This document reports the nominal longline CPUE values available for Gough and Nightingale Islands from the summary sheet records. Exponential trends are fitted to the more recent data, and estimates of the annual rate of increase are presented.
Johnston, Susan J, Butterworth, Doug S
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