Some theoretical Considerations on the "Overfishing" Problem

Russell, E. S.

doi:10.1093/icesjms/6.1.3

Cited by 150 publications

(62 citation statements)

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“…Since fisheries management science has broadened its scope from a purely biological (Russell 1931;Graham 1935) over a bioeconomic (Gordon 1953(Gordon , 1954Scott 1955;Crutchfield 1956Crutchfield , 1959 to finally a political bioregunomics approach (Walters 1980;Anderson 1987), many studies have questioned the future value of restrictive policies (Barber 1988;Larkin 1996;Ruseski 1998;Boude et al 2001;Polet et al 2006). Anderson (1985: 409) even states that "the general conclusion of this literature is that traditional management techniques such as closed seasons, closed areas, gear restrictions, and total quotas are economically inefficient".…”

Section: Discussionmentioning

confidence: 99%

The effect of restrictive policy instruments on Belgian fishing fleet dynamics

Stouten

Heene

Gellynck

et al. 2008

Aquat. Living Resour.

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-Even with the rapid changes in the level of complexity and the uncertainty of the environment in which Belgian sea fisheries operate, fisheries management in Belgium is still mainly based on restrictive policy instruments founded in the biological approach of fisheries management science. Since they will continue to play an important role, this paper evaluated changes in three restrictive policy instruments and their effect on future fleet performance and dynamics, i.e. maximum fishing days, total quota-restrictions and licences. These effects are tested through scenarios in a microeconomic simulation model, including sensitivity analysis. This study opts for a dynamic simulation model based on a microeconomic approach of fleet dynamics using system dynamics as a modelling technique (operational base: Vensim r DSS). The results indicated that changes in maximum fishing days and total quota resulted in higher fluctuations in fleet performance and dynamics compared to changes in licences. Furthermore, changes in maximum fishing days and total quota had a direct impact on fleet performance, though not always as expected, whereas licences only affected fleet performance indirectly since they only limit the entry of new vessels to the fleet and they can block the growth of successful sub fleets. The outcomes of this study are translated into practical recommendations for improving fisheries management. Firstly, policy makers need to be more aware of misperceptions of feedback. Secondly, the results proved that altering only one type of restrictive policy instrument at a time often fails to meet desired outcomes. Therefore, policy makers need to find a balance in combining policy instruments. Finally, this paper opens the discussion on the future value of restrictive policy instruments in the rapidly changing, complex and uncertain fisheries environment. It suggests rethinking their use from "preserving a status quo and social peace" toward a driving factor in "stimulating fleet dynamics".

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Section: Discussionmentioning

confidence: 99%

The effect of restrictive policy instruments on Belgian fishing fleet dynamics

Stouten

Heene

Gellynck

et al. 2008

Aquat. Living Resour.

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“…The definition of a fish stock has varied with the approach to identifying and classifying stocks and evolved with management needs (Begg and Waldman 1999). Early definitions relied on distinct internal dynamics and fishery characteristics (Russell 1931). Over the past 100 years, they have strongly depended on different methodological approaches designed to evaluate the homogeneity of populations, e.g., measurements of meristic and reproductive traits as well as geographic distributions.…”

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confidence: 99%

Genetic Stock Structure of Terapon jarbua in Taiwanese Waters

et al. 2015

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Over the past century, stock identification, which is crucial for fisheries stock assessments, has relied heavily on intraspecies variations to differentiate management units. In recent years, however, DNA approaches have shed additional light on some aspects of the natural history and ecology of species and stocks. The Crescent Grunter Terapon jarbua is widely distributed across the Indo-Pacific region. It inhabits coastal waters with sandy substrates and tends to aggregate in estuaries. In the present study, we collected 96 individuals of T. jarbua from 10 locations around the shoreline of Taiwan as well as near Guangdong, China. A concatenated sequence (1,753 bp) of mtDNA (cytochrome c oxidase I and cytochrome b) was obtained from all individuals. We discovered two genetically distinct clades (lineages A and B) with different historical demographies occurring sympatrically except at the Yilan collection site, which was dominated by lineage A haplotypes. Connectivity within this region is high according to F ST and AMOVA tests. The genetic variation between the two clades is far below the interspecies threshold for the genus Terapon (0.007 versus 0.3156). Therefore, we suggest that they be considered different genetic stocks from a fisheries management point of view and that future stock reassessment should be conducted based on the genetic information provided in this study. Further large-scale sampling is needed to understand the mechanisms that drive genetic partitioning on regional (Northwest Pacific) and global (Indo-Pacific) scales.

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“…Food consumption, required for growth (as per eqn (1)) and reproduction, required for recruitment, are usually not considered explicitly. Adapted from Russel (1931). Figure 1).…”

Section: Traditional Stock Assessmentmentioning

confidence: 99%

Fisheries Management

Pauly

Froese

2014

Encyclopedia of Life Sciences

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Based in part on the previous version of this eLS article 'Fisheries Management' (2007) by Daniel Pauly.Fisheries management is the set of science-based procedures used by government institutions to regulate fishers' access to fisheries resources; this involves temporal and spatial restrictions on the deployment of fishing gear, restrictions on features of these gear and constraints on the species and size composition of the catch, and its overall magnitude. The traditional goal of fisheries management was to achieve maximum sustainable yields. Maximum economic yields are obtained with slightly lower catches from larger fish stocks. Modern fisheries management aims for minimising the impact of fishing on the ecosystem and considers trophic interactions when determining catch levels. A new challenge is the assessment and management of data-limited fish stocks, which constitute about three-fourth of the exploited stocks.

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Some theoretical Considerations on the "Overfishing" Problem

Cited by 150 publications

References 0 publications

The effect of restrictive policy instruments on Belgian fishing fleet dynamics

The effect of restrictive policy instruments on Belgian fishing fleet dynamics

Genetic Stock Structure of Terapon jarbua in Taiwanese Waters

Fisheries Management

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