Theories and behavioural drivers underlying fleet dynamics models

Putten, Ingrid E. van; Kulmala, Sakari; Thébaud, Olivier; Dowling, Natalie; Hamon, Katell G.; Hutton, Trevor; Pascoe, Sean

doi:10.1111/j.1467-2979.2011.00430.x

Cited by 182 publications

(141 citation statements)

References 138 publications

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“…Theoretical studies suggest over-quota discarding and high-grading occur under specific conditions (Anderson 1994;Turner 1997;Parslow 2010;van Putten et al 2012). However, empirical evidence for high-grading is scarce, although there is anecdotal information from the fishing industry.…”

Section: Introductionmentioning

confidence: 99%

High-grading and over-quota discarding in mixed fisheries

Batsleer

Hamon²,

Overzee³

et al. 2015

Rev Fish Biol Fisheries

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High-grading is the decision by fishers to discard fish of low value that allows them to land more valuable fish. A literature review showed high-grading is reported in commercial and non-commercial fisheries around the world, although the number of observations is small. High-grading occurs in fisheries that are restricted to land their total catch due to management, market or physical constraints. Using the mixed flatfish fishery as a model system, a dynamic state variable model simulation showed that high-grading of certain grades occurs throughout the year when their ex-vessel price is low. High-grading increases with the degree of quota restriction, while the level of over-quota discarding is unrelated to the quota level. The size composition of the high-graded catch differs from the landed catch. Due to the differences in the seasonal variation in size specific ex-vessel price, the effect of quota restrictions on the size composition of the discarded catch is nonlinear. High-grading is difficult to detect for the fishery inspection as it occurs on-board during the short period when the catch is processed. We conclude that highgrading is under-reported in fish stocks managed by restrictive quota, undermining the quality of stock assessments and sustainable management of exploited fish stocks.

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Section: Introductionmentioning

confidence: 99%

High-grading and over-quota discarding in mixed fisheries

Batsleer

Hamon²,

Overzee³

et al. 2015

Rev Fish Biol Fisheries

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“…However, the behaviour of fishermen cannot be explained exclusively on the basis of solving an economic problem of income maximisation, since there are numerous key drivers that need to be incorporated into empirical models if the dynamics of the fleets and the behaviour of fishermen themselves are to be understood (Putten et al, 2011). For example, Hannesson (1998) stresses that institutional factors, such as the rigidity of the system for allocating TACs, lead in themselves to a race to catch stocks.…”

Section: Discussionmentioning

confidence: 99%

Economic structure of fishing activity: an analysis of mackerel fishery management in the Basque Country

García‐Enríquez

Murillas-Maza²,

Arteche

2016

EARN

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This paper analyses the activity of the Basque fleet during the mackerel fishing season and presents an economic analysis of the equilibrium of this fishery. It seeks to determine whether its economic structure represents an internal factor explaining the fishermen's behaviour. The inverse demand function and the average cost function are therefore estimated. Moreover, the analysis conducted here also takes into account the institutional dimension by factoring in current fishery regulation measures. Conclusions are drawn as to whether the incentives provided by the management measures and the strategy of fishermen are optimal on the basis of the estimated economic functions. KEYWORDS:Cost structure, economic equilibrium, fishery, inverse demand function, mackerel. Estructura económica de la actividad pesquera: un análisis de la gestión de la pesquería del verdel en el País VascoRESUMEN: Este trabajo analiza la actividad de la flota vasca durante la costera del verdel y presenta un análisis económico del equilibrio de esta pesquería. Se pretende determinar si su estructura económica representa un factor interno que explica el comportamiento de los pescadores. Así, se estiman la función inversa de demanda y la función de costes medios. Además, el análisis también considera la dimensión institucional, incorporando las actuales medidas de regulación de la pesquería. Se concluye analizando si los incentivos generados por las medidas de gestión y la estrategia de los pescadores son óptimos en base a las funciones económicas estimadas.PALABRAS CLAVE: Estructura de costes, equilibrio económico, función inversa de demanda, pesquería, verdel.Clasificación JEL: Q21, Q22.

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“…There is, however, little information available on capacity dynamics through changes of owners, including on the spatial extent of capacity redistribution (Fulton et al 2011;van Putten et al 2011b). A previous description showed that 40-50 % of traded vessels change maritime fishing districts and 25-40 % change regions through the operation of the second-hand market in the French Atlantic Ocean .…”

Section: Introductionmentioning

confidence: 99%

Managing Fleet Capacity Effectively Under Second-Hand Market Redistribution

Quillérou

Roudaut

Guyader

2013

AMBIO

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Fishing capacity management policies have been traditionally implemented at national level with national targets for capacity reduction. More recently, capacity management policies have increasingly targeted specific fisheries. French fisheries spatially vary along the French coastline and are associated to specific regions. Capacity management policies, however, ignore the capital mobility associated with second-hand vessel trade between regions. This is not an issue for national policies but could limit the effectiveness of regional capacity management policies. A gravity model and a random-effect Poisson regression model are used to analyze the determinants and spatial extent of the second-hand market in France. This study is based on panel data from the French Atlantic Ocean between 1992 and 2009. The trade flows between trading partners is found to increase with their sizes and to be spatially concentrated. Despite the low trade flows between regions, a net impact analysis shows that fishing capacity is redistributed by the second-hand market to regions on the Channel and Aquitaine from central regions. National capacity management policies (constructions/destructions) have induced a net decrease in regional fleet capacity with varying magnitude across regions. Unless there is a change of policy instruments or their scale of implementation, the operation of the second-hand market decreases the effectiveness of regional capacity management policies in regions on the Channel and Aquitaine.

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Theories and behavioural drivers underlying fleet dynamics models

Cited by 182 publications

References 138 publications

High-grading and over-quota discarding in mixed fisheries

High-grading and over-quota discarding in mixed fisheries

Economic structure of fishing activity: an analysis of mackerel fishery management in the Basque Country

Managing Fleet Capacity Effectively Under Second-Hand Market Redistribution

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