Atlantic Salmon (Salmo salar L.) re-introduction in Germany: a status report on national programmes and activities

Monnerjahn, U.

doi:10.1111/j.1439-0426.2011.01849.x

Cited by 18 publications

(20 citation statements)

References 2 publications

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“…The average water discharge at Gengenbach is 23 m 3 /s. Salmon has been lost from this river, similar to other German rivers, largely due to pollution, habitat degradation and barriers to migration caused by weirs and dams (Molls & Nemitz, 2008;Monnerjahn, 2011). A reintroduction programme for Atlantic salmon in the Kinzig was initiated in 2002 (124,000 parr released in the Kinzig and tributaries in 2015).…”

Section: Study Areamentioning

confidence: 99%

Survival and behaviour of Atlantic salmon smolts passing a run‐of‐river hydropower facility with a movable bulb turbine

Thorstad

Havn

Sæther

et al. 2017

Fisheries Management Eco

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Downstream migration of radio‐tagged Atlantic salmon smolts, Salmo salar L., was studied in the Kinzig, Germany, to examine effects of passing a run‐of‐river hydropower station with a movable bulb turbine. Immediate mortality for smolts passing the power station was low (3%–6%), probably facilitated by a curved rack in front of the turbine and the possibility to pass over it. Mortality in the impounded stretch above the power station was also low (1.5% extra mortality compared to a control stretch). The combined mortality due to hydropower was 5%–8%, excluding delayed effects. Most smolts followed the main flow passing through the turbine area (94%). Only few used a fishway (4%) or a nearby millstream (2%). Migration speed was slowed down at the power station, but the passage only caused a short delay (average/median 8.6/1.3 hr). However, even low mortality and short delays at several power stations and reservoirs may have considerable cumulative effects.

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Section: Study Areamentioning

confidence: 99%

Survival and behaviour of Atlantic salmon smolts passing a run‐of‐river hydropower facility with a movable bulb turbine

Thorstad

Havn

Sæther

et al. 2017

Fisheries Management Eco

View full text Add to dashboard Cite

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“…Although some Atlantic Salmon returned to Point Wolfe Creek, New Brunswick, following 4 years of hatchery releases, the population subsequently crashed, similar to neighboring populations in the inner Bay of Fundy (Fraser et al 2007). Atlantic Salmon have been reintroduced to several rivers in Germany, but these populations are still demographically reliant on importing nonlocal eggs and fry despite some observations of natural spawning (Monnerjahn 2011). Finally, the initial phase of Atlantic Salmon reintroduction to tributaries of Lake Ontario in New York State has focused on experimental testing of various release strategies and sites in an effort to maximize survival (Coghlan and Ringler 2004;Coghlan et al 2007).…”

Section: Colonization Strategymentioning

confidence: 99%

Planning Pacific Salmon and Steelhead Reintroductions Aimed at Long‐Term Viability and Recovery

Pess

Carmichael

Ford

et al. 2014

N American J Fish Manag

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Local extirpations of Pacific salmon Oncorhynchus spp. and steelhead O. mykiss, often due to dams and other stream barriers, are common throughout the western United States. Reestablishing salmonid populations in areas they historically occupied has substantial potential to assist conservation efforts, but best practices for reintroduction are not well established. In this paper, we present a framework for planning reintroductions designed to promote the recovery of salmonids listed under the Endangered Species Act. Before implementing a plan, managers should first describe the benefits, risks, and constraints of a proposed reintroduction. We define benefits as specific biological improvements towards recovery objectives. Risks are the potential negative outcomes of reintroductions that could worsen conservation status rather than improve it. Constraints are biological factors that will determine whether the reintroduction successfully establishes a self‐sustaining population. We provide guidance for selecting a recolonization strategy (natural colonization, transplanting, or hatchery releases), a source population, and a method for providing passage that will maximize the probability of conservation benefit while minimizing risks. Monitoring is necessary to determine whether the reintroduction successfully achieved the benefits and to evaluate the impacts on nontarget species or populations. Many of the benefits, especially diversity and the evolution of locally adapted population segments, are likely to accrue over decadal time scales. Thus, we view reintroduction as a long‐term approach to enhancing viability. Finally, our review of published salmonid reintroduction case studies suggests that large uncertainties remain in the success of reintroduction in establishing self‐sustaining populations, particularly for programs employing active methods. Received September 10, 2012; accepted August 30, 2013 Published online January 30, 2014

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“…On the European red list of freshwater fishes (2011), 37% of 531 occurring native species are listed as threatened at a continental scale and 17% show declining populations (Freyhof and Brooks, 2011). In contrast to fish species of high public attention like European sturgeon (Acipenser sturio) or Atlantic salmon (Salmo salar) that are used as conservation flagships for European major rivers (Ludwig, 2006;Monnerjahn, 2011), other endangered species with low economic value might be overlooked and neglected by conservation efforts (Kalinkat et al, 2016). This latter category includes the European weatherfish (Misgurnus fossilis L.).…”

Section: Introductionmentioning

confidence: 99%

Reintroduction and stock enhancement of European weatherfish (Misgurnus fossilis L.) in Rhineland-Palatinate and Hesse, Germany

Schreiber

Korte

Schmidt

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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A stocking program for the endangered European weatherfish (Misgurnus fossilis L.) was conducted in the German federal states of Rhineland-Palatinate and Hesse, southwest Germany. An initial monitoring enabled to identify local broodstock and to assess habitats regarding their ecological suitability for reintroduction. In a second step, broodstock were caught for artificial propagation and cultured fry were released in previously selected river sectors. Furthermore, reintroduction sectors were biannually monitored to assess stocking success. Within the study period (2014–2016), a total number of approximately 83,500 juveniles were stocked in three river sectors for reintroduction and approximately 85,000 juveniles were stocked in four other river sectors to strengthen existing populations. During the post-release monitoring, 45 individuals were recaptured in two sectors. The documented short-term reintroduction success (i.e. survival of released individuals) indicates appropriateness of the selected stocking strategy. Furthermore, the provided course of action might be transferred to further states or countries and thereby contribute to weatherfish conservation at larger scales.

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Atlantic Salmon (Salmo salar L.) re-introduction in Germany: a status report on national programmes and activities

Cited by 18 publications

References 2 publications

Survival and behaviour of Atlantic salmon smolts passing a run‐of‐river hydropower facility with a movable bulb turbine

Survival and behaviour of Atlantic salmon smolts passing a run‐of‐river hydropower facility with a movable bulb turbine

Planning Pacific Salmon and Steelhead Reintroductions Aimed at Long‐Term Viability and Recovery

Reintroduction and stock enhancement of European weatherfish (Misgurnus fossilis L.) in Rhineland-Palatinate and Hesse, Germany

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