Attitudes and opinions of commercial fishermen on whitefish management in the Gulf of Bothnia, Finland

Huhmarniemi, Alpo; Salmi, Juhani

doi:10.1046/j.1365-2400.1999.00156.x

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…This trend already existed in the 1970s and continued to the end of the 20th Century. The mesh sizes presently used in the sea are smaller than in previous decades because fishers have typically compensated for decreased catches by targeting increasingly smaller fish (Tuikkala & Pirttijärvi ; Huhmarniemi & Salmi ; Lehtonen & Jokikokko ). Therefore, a considerable part of the sea catch presently consists of immature or younger adult whitefish.…”

Section: Discussionmentioning

confidence: 99%

The large‐scale stocking of young anadromous whitefish (Coregonus lavaretus) and corresponding catches of returning spawners in the River Tornionjoki, northern Baltic Sea

Jokikokko¹,

Huhmarniemi²

2014

Fisheries Management Eco

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Stocking and fishing effort are two important potentially conflicting factors in fish stock management that require appropriate assessment to ensure a sustainable fishery. In the River Tornionjoki, which discharges into the northern Baltic Sea, a summer‐ascending whitefish, Coregonus lavaretus L., stock has long been a target by traditional dipnet fishing. Enhancement stocking of young whitefish started in the River Tornionjoki in the 1970s after a collapse in catches, with millions of age‐0 whitefish stocked annually in the river, but after about three decades, the stocking rates were considerably reduced. As a result, dipnet catches of whitefish in the Kukkolankoski Rapids rose simultaneously, peaking in the 1980s and 1990s, and then subsequently decreased. There was a significant positive correlation between stocking intensity and catch, both in weight and in numbers, revealing a strong relationship between whitefish releases and dipnet catch. Changes in gillnet fishing effort in the sea affected dipnet catches in weight as well as in mean size of captured whitefish. When the combined effect of stocking and gillnet effort was evaluated, only stocking significantly affected dipnet catches.

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Section: Discussionmentioning

confidence: 99%

The large‐scale stocking of young anadromous whitefish (Coregonus lavaretus) and corresponding catches of returning spawners in the River Tornionjoki, northern Baltic Sea

Jokikokko¹,

Huhmarniemi²

2014

Fisheries Management Eco

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“…This is a long‐term approach that involves education of fishers and carries benefits with respect to fishers' behavioral intentions. In addition, we propose that MEABR be analyzed in accordance with livelihood strategies of fishers in which differences in local economies (Scoones 1998), skills (S.G., unpublished data), flexibility (Huhmarniemi & Salmi 1999), and interests of fisher communities are developed. In this way, development programs can target the specific needs of high‐ and low‐pluriactivity syndicates that have different objectives and attitudes.…”

Section: Discussionmentioning

confidence: 99%

Importance of Attitudinal Differences among Artisanal Fishers toward Co‐Management and Conservation of Marine Resources

Gelcich

Edwards‐Jones

Kaiser

2005

Conservation Biology

131

107

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The Chilean government has introduced a policy that gives formal property rights over defined areas of seabed to organized groups of artisanal fishers with the goal of achieving sustainable exploitation of natural resources. We assessed differences in the attitudes of participating artisanal fishers toward this form of management to understand their importance in the design and implementation of fisheries management. We used questionnaires and participatory rural appraisal techniques to survey members of six fishing management committees. Fishers' attitudes varied significantly among syndicates in three main domains: attitudes toward the environment, unresolved aspects behind the management area policy, and perceived benefits derived from adoption of the policy. These differences indicated the existence of distinct world views that structure fishers' behavior toward the marine environment and its management. In addition, the responses made by fishers correlated best with the degree of off-sector pluriactivity and their dependence on diving as a source of income. This suggested that a livelihood approach to the development of Chilean artisanal fisheries that considers the multiple economic niches of the fishers will be most effective in the implementation of dual conservation/management measures. Importancia de las Diferencias de Actitudes entre Pescadores Artesanales en la Cogestión y Conservación de Recursos MarinosResumen: El gobierno chileno ha introducido una política que otorga derechos de propiedad formales eń areas definidas de lecho marino a grupos organizados de pescadores artesanales con la intención de lograr la explotación sustentable de recursos naturales. Evaluamos las diferencias en las actitudes de los pescadores artesanales participantes con respecto a esta forma de gestión para entender su importancia en el diseño y aplicación de la gestión de pesquerías. Utilizamos cuestionarios y técnicas de evaluación rural participativas con integrantes de seis comités de gestión pesquera. Las actitudes de los pescadores variaron significativamente entre los sindicatos en los tres campos principales: actitudes con respecto al ambiente, aspectos no resueltos detrás de la política de gestión y percepción de beneficios derivados de la adopción de la política. Estas diferencias indicaron la existencia de distintas visiones globales que estructuran las actitudes de los pescadores con respecto al medio marino y su gestión. Adicionalmente, las respuestas de los pescadores estuvieron mejor correlacionadas con el grado de pluriactividad fuera del sector y su dependencia del buceo como fuente de ingreso. Esto sugiere que una estrategia de subsistencia para el desarrollo de pesquerías artesanales chilenas ‡Address correspondence to M.J. Kaiser,

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“…According to Leskelä, Jokikokko and Huhmarniemi (), about 60% of tagged whitefish stocked in the mouth of the River Kemijoki were caught in the Bothnian Sea and in the Quark during their feeding migration. Size‐selective fishing with gillnets along their long migration path has diminished the mean size of Tornionjoki whitefish, because the mesh sizes used in gillnet fishing have reduced since the late 1980s (Huhmarniemi & Salmi, ). In the 1940s, the mean weight of dip‐netted whitefish was about 900 g in the River Oulujoki in the Bothnian Bay (Hurme, ) compared with the present >300 g in the River Tornionjoki (Jokikokko & Huhmarniemi, ).…”

Section: Discussionmentioning

confidence: 99%

Short feeding migration associated with a lower mean size of whitefish in the River Tornionjoki, northern Baltic Sea

Jokikokko

Hägerstrand

Lill

2018

Fisheries Management Eco

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The size of anadromous whitefish caught with dip nets in the River Tornionjoki in the northern part of the Gulf of Bothnia has decreased during recent decades. To find an explanation for this trend, ascending whitefish were sampled in the lower part of the river in August 2016, and they were divided into two groups according to fish length. The length of the SMALL group was ≤ 32 cm (n = 32) and that of the LARGE group ≥ 33 cm (n = 65). The elemental analysis of otoliths revealed that the barium concentration was clearly higher in otoliths from the SMALL group compared to the LARGE group. This indicates that the fish in the LARGE group had migrated to feed further south in the Gulf of Bothnia, with a higher salinity, than the fish in the SMALL group. Because of this migration difference, and a decline in the gillnet effort, especially in the feeding areas near the river mouth, it is assumed that proportionally more fish in the SMALL group are able to ascend the river to spawn than previously, thus decreasing the mean size. At the same time, the heavy gillnet fishery in the south removes fish from the LARGE group.

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Attitudes and opinions of commercial fishermen on whitefish management in the Gulf of Bothnia, Finland

Cited by 7 publications

References 5 publications

The large‐scale stocking of young anadromous whitefish (Coregonus lavaretus) and corresponding catches of returning spawners in the River Tornionjoki, northern Baltic Sea

The large‐scale stocking of young anadromous whitefish (Coregonus lavaretus) and corresponding catches of returning spawners in the River Tornionjoki, northern Baltic Sea

Importance of Attitudinal Differences among Artisanal Fishers toward Co‐Management and Conservation of Marine Resources

Short feeding migration associated with a lower mean size of whitefish in the River Tornionjoki, northern Baltic Sea

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