Exploring the possibilities of seaward migrating juvenile European sturgeon Acipenser sturio L., in the Dutch part of the River Rhine

Brevé, Niels; Vis, Hendry; Houben, Bram; Laak, G. A. J. de; Breukelaar, A. W.; Acolas, Marie‐Laure; Bruijn, Q. A. A. de; Spierts, I.L.Y.

doi:10.1007/s11852-013-0281-0

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…The specimens were obtained from the French captive stock within intra‐governmental agreement for a limited number of sturgeon for experimental releases. The results obtained in 2012 have been published in Brevé et al (), the results obtained in 2015 and a comparison between both field studies are given in the present paper.…”

Section: Introductionmentioning

confidence: 60%

“…The telemetry system has detection stations installed at each main weir in the Rhine and Meuse Rivers in the Netherlands (Figure a and b). Surgery took place at the Irstea French experimentation station and the method of tagging and recuperation, transportation to the Netherlands and acclimatisation of the sturgeon to Rhine water followed the procedure described in Brevé et al (). The transponders are contained within a shell of surgical glass (26.5 g in air; Ø: 15 mm; length: 70 mm; battery life of approximately 4 years).…”

Section: Sturgeon Tagging and Releasementioning

confidence: 99%

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Outmigration pathways of stocked juvenile European sturgeon (Acipenser sturioL., 1758) in the Lower Rhine River, as revealed by telemetry

Brevé

Vis²,

Houben

et al. 2018

J Appl Ichthyol

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Working towards a future Rhine Sturgeon Action Plan the outmigration pathways of stocked juvenile European sturgeon (Acipenser sturio L., 1758) were studied in the River Rhine in 2012 and 2015 using the NEDAP Trail system. A total of 87 sturgeon of 3 to 5 years old (n = 43 in 2012, n = 44 in 2015) were implanted with transponders and released in May and June in the river Rhine at the Dutch‐German border, approximately 160 km from the sea. In total three sturgeons (3%) were found dead on river banks within seven days after the release. Based upon their wounds these sturgeons were likely hit by ship‐propellers. Tracking results were obtained from 57 (66%) of the sturgeons, of which 39 (45%) indicated movement into the Port of Rotterdam. Here the sturgeons remained for an average of two weeks, which suggests they spent time to acclimatize to higher salinities before entering the North Sea. Of the 45 (52%) sturgeons that were confirmed to have entered the North Sea, ten (22%) were recaptured (mainly by shrimpers and gill‐nets) close to the Dutch coastline; nine were alive and were released. From the results we obtained the preferred outmigration pathways, movement speeds and an indication of impacting factors (i.e. ship propellers and bycatch). Bycatches provided also localisations information in the coastal area. A next step to complete this work would be to assess habitat selection in freshwater and downstream migration of young of the year (YOY sturgeons) in the Lower Rhine.

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Section: Introductionmentioning

confidence: 60%

Section: Sturgeon Tagging and Releasementioning

confidence: 99%

Outmigration pathways of stocked juvenile European sturgeon (Acipenser sturioL., 1758) in the Lower Rhine River, as revealed by telemetry

Brevé

Vis²,

Houben

et al. 2018

J Appl Ichthyol

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“…Among restoration efforts which addressed the major stressors to aquatic diversity (Dudgeon et al., 2006), few projects targeted invasive species and overexploitation. Notable examples of restoration to target these stressors included investigating the relative effects of flow restoration and removal of aquatic or riparian invasive species on sensitive native fishes (Keller et al., 2014; Marks et al., 2011), and fish reintroductions after threats of overexploitation and/or habitat degradation had been removed (Argent et al., 2016; Brevé et al., 2014). These stressors are likely to have been under‐represented in our review because they categorically overlapped with specific conservation and management programmers under the umbrella of biological threat programmes or fisheries enhancement programmes, and may not have included the key term ”restoration” as part of the publication.…”

Section: Discussionmentioning

confidence: 99%

Evaluating effectiveness of restoration to address current stressors to riverine fish

Rogosch,

Boehm,

Tingley

et al. 2024

Freshwater Biology

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River restoration programmes with the goal of conserving and rehabilitating inland fishes have a multi‐decadal history, but evaluation and synthesis of past restoration actions have been limited by a lack of monitoring and reporting. Given that calls for both monitoring and systematic reviews of restoration have increased, we were interested in the influence that restoration has had on improving conditions for riverine fishes resulting from long‐standing and increasingly prominent stressors. Our objectives were to (1) identify which stressors were targeted in river restoration efforts, (2) determine the proportion of published studies that articulate restoration goals and develop comparative monitoring designs for assessing the effects of restoration on fishes, and (3) conduct a meta‐analysis to synthesise fish responses to restoration projects. We assessed restoration effectiveness for increasing fish density and richness from peer‐reviewed papers published over the past decade using a global systematic review and meta‐analysis. We found that restoration actions addressed major stressors primarily by improving in‐stream habitat (37%), increasing in‐stream longitudinal connectivity (26%) and increasing lateral floodplain connections (9%). Although 81% of studies had comparative monitoring designs (i.e., before/after and control/impact) and stated restoration goals, only 40% of those studies reported sufficient data to be included in the meta‐analysis. Projects which increased in‐stream connectivity had the largest positive effect size on fish density and richness compared to in‐stream habitat improvements and increasing floodplain connections. Time since restoration and restoration size (i.e., geographical footprint) were not strong predictors of fish response effect sizes. Restoration effectiveness was highly variable among project types. Authors of studies included in the meta‐analysis often identified spatial or temporal scale of monitoring, overriding catchment conditions, and recolonisation potential as sources of variability and effectiveness in restoration outcomes. Systematic reporting of these and other covariates may help guide processes in restoration evaluation and provide valuable research insights. Despite increased emphasis on monitoring, incomplete data reporting limited the number of studies that could be included for quantitative meta‐analysis. Persistent emphasis on setting specific criteria (e.g., measurable outcomes of fish response) for restoration goals, project monitoring, data reporting, information sharing and collaborative projects is likely to continue to improve understanding of restoration effectiveness transferable to future endeavours. Our results can be used to support river restoration practitioners with evidence‐based information to evaluate the cost–benefit ratio of competing restoration priorities, and inform restoration planning and implementation for riverine fish.

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“…fuiken) is sterk afhankelijk van de activiteit van de vis die zelf in het vistuig moet zwemmen. Maar de impact van visserij is ook gebleken uit de pilot van de uitzet van een beperkt aantal steuren waarbij de jonge steuren al vrij snel langs de kust werden teruggevangen (Brevé et al 2013). De impact van de visserij is ook gebleken uit een onderzoek naar uitgespoelde snoekbaars die na een succesvolle terugkeer in het Haringvliet alsnog weer in de Voordelta zijn teruggevangen (Vis 2017).…”

Section: Inhoudunclassified

Prognose visstand in en rond het Haringvliet na invoering van het Kierbesluit in 2018

Griffioen¹,

Winter²,

Hal³

2017

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Exploring the possibilities of seaward migrating juvenile European sturgeon Acipenser sturio L., in the Dutch part of the River Rhine

Cited by 6 publications

References 24 publications

Outmigration pathways of stocked juvenile European sturgeon (Acipenser sturioL., 1758) in the Lower Rhine River, as revealed by telemetry

Outmigration pathways of stocked juvenile European sturgeon (Acipenser sturioL., 1758) in the Lower Rhine River, as revealed by telemetry

Evaluating effectiveness of restoration to address current stressors to riverine fish

Prognose visstand in en rond het Haringvliet na invoering van het Kierbesluit in 2018

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