Rehabilitation efforts for Atlantic salmon in the Meuse basin area: Synthesis 1983–1998

Prignon, C.; Micha, Jean‐Claude; Rimbaud, Gilles; Philippart, Jean-Claude

doi:10.1007/978-94-017-2163-9_8

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…Dams are a real obstacle for migration and an extremely disruptive problem (Melvin & Warren, 1998;Ovidio & Phillippart, 2002) that can easily compromise the local survival of the species (Prignon et al, 1999;Mathers et al, 2002). Therefore, in order to avoid this ecological disturbance, fish passages were been built at several dams.…”

Section: Discussionmentioning

confidence: 99%

Distribution of Agonostomus monticola and Brycon behreae in the Río Grande de Térraba, Costa Rica and relations with water flow

Ribeiro

Umaña‐Villalobos

2010

Neotrop. ichthyol.

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Distribution of Agonostomus monticola and Brycon behreae in the Río Grande de Térraba, Costa Rica and relations with water flowThiago Cotta Ribeiro and Gerardo Umaña VillalobosFish monthly samples were made in three tributaries and in the main stream in order to study population dynamics and the influence of flow on abundance of Agonostomus monticola (Mugilidae) and Brycon behreae (Characidae) in the basin of Térraba River Basin (Costa Rica). Flow was seasonal in these rivers, with peak flow in October. Recruitment was different among the species, B. behreae recruited from January to June and A. monticola all year round with a peak in June-July and October-November. Juveniles were more abundant in smaller streams. Abundance was higher in general during low flow and low turbidity periods. The results suggest that the streams have an important role in the maintenance of both species in the ecosystem, where juveniles can use the streams as nursing habitats during their development, allowing these small streams to be considered as essential fish habitats. Also, it was determined that the increased volume and turbidity of water can significantly affect the proportion of adults and juveniles between the main river and its tributaries.Com o objetivo de estudar a biologia de Agonostomus monticola (Mugilidae) e Brycon behreae (Characidae) da bacia do rio Térraba (Costa Rica), coletas mensais destas duas espécies foram feitas em diferentes pontos da bacia. A dinâmica populacional entre as categorias de tamanho dos peixes entre três tributários e rio Térraba foram analisados, bem como a variação da abundância dos peixes de acordo com as variações do nível das águas ao longo do ano. A flutuação do nível das águas é sazonal nestes rios, com um pico máximo em outubro. O recrutamento foi diferente entre as espécies, B. behreae apresentou o recrutamento de janeiro a junho e A. monticola durante todo o ano com um pico nos meses de junho-julho e outubronovembro. Juvenis foram mais abundantes nos riachos menores. A abundância foi, em geral, maior nos períodos de baixo nível de água e baixa turbidez. Os resultados sugerem que os córregos têm um papel importante na manutenção de ambas as espécies neste sistema, onde os indivíduos jovens podem usar os córregos como habitats de refúgio e proteção durante o seu desenvolvimento, o que faz estes pequenos tributários serem considerados como um habitat essencial para essas espécies. Verificamos também que o aumento do volume e da turbidez da água pode afetar significantemente a dinâmica da proporção de adultos e juvenis entre o rio principal e seus tributários.

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Section: Discussionmentioning

confidence: 99%

Distribution of Agonostomus monticola and Brycon behreae in the Río Grande de Térraba, Costa Rica and relations with water flow

Ribeiro

Umaña‐Villalobos

2010

Neotrop. ichthyol.

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“…Common bream prespawning migrations within the mainstream and between the mainstream and its tributaries were reported in relation to temperature increases in spring (Borcherding et al, 2002; Gardner et al, 2013; Heermann & Borcherding, 2006; Prignon et al, 1998). In our study, however, in the longitudinal gradient (reservoir–river), an increase in temperature did not appear to be a necessary condition for the initiation of migrations.…”

Section: Discussionmentioning

confidence: 99%

The effect of temperature on the dynamics of common bream Abramis brama migrations between the reservoir and its tributary

Slavík

Pfauserová

Brabec

et al. 2023

Ecology of Freshwater Fish

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An active preference for higher temperatures within a physiological optimum is beneficial for animal movement. For example, ascending temperatures induce an increase in cyprinid fish metabolism and swimming ability. Spring upstream migrations driven by the search for resources may be related to these increases. Conversely, downstream migrations in autumn follow a decrease in temperature. When fish migrations are driven by a search for resources, for example, food availability and reproduction, or to avoid predators, then the temperature effect can be reduced to approximately the threshold temperatures that induce up‐ and/or downstream movement. To test this assumption, we tracked the seasonal migrations of the common bream Abramis brama between a reservoir and its tributary using radio tags with temperature sensors during a 5‐year period. Upstream migrations of the species into the tributary were not motivated by seeking temperatures different from those in the reservoir, that is, fish body temperatures in both environments were comparable across seasons. However, for long‐distance migrations, increasing temperature did support upstream migrations. Temperature did not determine the direction or intensity of short‐distance migration of the species between the reservoir and the tributary. No significant influence of temperature was recorded for the downstream migrations according to the results of the generalised additive mixed model (GAMM1), which related movement distance as the explanatory variable to the signed fish body temperature as the response. The second model (GAMM2) relating fish body temperature as the explanatory variable to the signed movement distance as the response obtained a threshold value of 19.1°C for the upstream migrations and 1.5°C for the downstream migrations of the common bream.

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“…This may include allowing habitats to deteriorate while attempting to compensate for fisheries impacts through releases of cultured fish (Taylor, 1999). On the other hand, releases of cultured fish for population restoration or rebuilding may precipitate major investments in habitat improvements, such as pollution control or the building of fish passage facilities (Philippart, 1995;Prignon et al, 1999). Many production-oriented enhancements benefit from intentional manipulations of habitats (e.g., fertilization of reservoirs; De Silva, 2003) or biotic interactions (e.g., predator control; Bell et al, 2005) to improve productivity of the released stock.…”

Section: Dynamic Interactionsmentioning

confidence: 98%

Understanding and Managing Enhancement Fisheries Systems

Lorenzen

2008

Reviews in Fisheries Science

119

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Aquaculture-based fisheries enhancement is a set of management approaches involving the release of cultured organisms to enhance, conserve, or restore fisheries. Enhancement has a long history, and substantial progress has been made in key areas of science underpinning the activity. Yet the contribution of enhancements to global fisheries production has remained small, and there are few outright "success stories." Enhancements enter into complex fisheries systems and, to be successful, must contribute to a broad set of biological, economic, social, and institutional management objectives. In doing so, enhancements need to add value to, or outperform, alternative measures such as fishing regulation or habitat management. This is possible only under certain conditions and may require transformations in multiple biological-technical as well as market and institutional attributes of the fisheries system. I outline a framework for the integrated analysis of enhancement fisheries systems and a systematic, transparent, and stakeholder-participatory development process.

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Rehabilitation efforts for Atlantic salmon in the Meuse basin area: Synthesis 1983–1998

Cited by 6 publications

References 7 publications

Distribution of Agonostomus monticola and Brycon behreae in the Río Grande de Térraba, Costa Rica and relations with water flow

Distribution of Agonostomus monticola and Brycon behreae in the Río Grande de Térraba, Costa Rica and relations with water flow

The effect of temperature on the dynamics of common bream Abramis brama migrations between the reservoir and its tributary

Understanding and Managing Enhancement Fisheries Systems

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