How fish feel the flow

Dabiri, John O.

doi:10.1038/nature23096

Cited by 26 publications

(10 citation statements)

References 6 publications

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“…So, a larva may be able to tell if it is swimming with a current, into it, or across it. These discoveries raise both interesting possibilities for larval-fish navigation [48] and challenges for modelling. More research is needed on this.…”

Section: Dispersal Periodmentioning

confidence: 99%

Perspectives on Larval Behaviour in Biophysical Modelling of Larval Dispersal in Marine, Demersal Fishes

J.M

2020

Oceans

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Biophysical dispersal models for marine fish larvae are widely used by marine ecologists and managers of fisheries and marine protected areas to predict movement of larval fishes during their pelagic larval duration (PLD). Over the past 25 years, it has become obvious that behaviour—primarily vertical positioning, horizontal swimming and orientation—of larvae during their PLD can strongly influence dispersal outcomes. Yet, most published models do not include even one of these behaviours, and only a tiny fraction include all three. Furthermore, there is no clarity on how behaviours should be incorporated into models, nor on how to obtain the quantitative, empirical data needed to parameterize models. The PLD is a period of morphological, physiological and behavioural change, which presents challenges for modelling. The present paper aims to encourage the inclusion of larval behaviour in biophysical dispersal models for larvae of marine demersal fishes by providing practical suggestions, advice and insights about obtaining and incorporating behaviour of larval fishes into such models based on experience. Key issues are features of different behavioural metrics, incorporation of ontogenetic, temporal, spatial and among-individual variation, and model validation. Research on behaviour of larvae of study species should be part of any modelling effort.

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Section: Dispersal Periodmentioning

confidence: 99%

Perspectives on Larval Behaviour in Biophysical Modelling of Larval Dispersal in Marine, Demersal Fishes

J.M

2020

Oceans

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“…Das Konzept wurde vom Strömungsverhalten der Fischschwärme adaptiert. Wenn sich Fische in einem Schwarm bewegen, bilden sie eine bestimmte Formation, die es dem einzelnen Tier erlaubt, sich vom Wirbel der beiden vorausschwimmenden Fische voranziehen zu lassen (Dabiri 2017;Gemmell et al 2016;Islam et al 2013). Der Grund dafür ist die sogenannte konstruktive Interferenz zwischen den hydrodynamischen Wirbeln benachbarter Fische.…”

Section: Vawts In Einer Windparkkonfigurationunclassified

Das Potenzial von vertikalen Windenergieanlagen im Kontext wachsender Flächennutzungskonflikte und Akzeptanzprobleme der Windenergie

2019

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Zusammenfassung Der Ausbau der Windenergie geht mit zunehmenden Akzeptanzproblemen und unterschiedlichen Flächennutzungskonflikten einher. Diese ergeben sich maßgeblich aufgrund der großen visuellen und akustischen Signatur von horizontalen Windenergieanlagen und dem großen Flächenbedarf von Windparks. Gegenwärtig werden Untersuchungen zu einem Anlagentyp durchgeführt, der die Möglichkeit bietet, diese negativen Effekte deutlich zu reduzieren. Dabei handelt es sich um einen speziellen Anlagentyp mit vertikaler Achsenausrichtung. Diese Anlagenform stand bisher wenig im Fokus der Öffentlichkeit und Wissenschaft stand. Die Vorteile dieser Anlagenform sind ihre niedrige Bauhöhe und ihr geringer akustischer Fußabdruck. Neue Forschungen zeigen zudem, dass die Energiedichte dieser Anlagen diejenige von konventionellen Windenergieanlagen um ein Vielfaches übersteigen kann, wenn man sie in einer Windparkkonfiguration implementiert. Der vorliegende Artikel soll diesen Typ von Windkraftanlage in Bezug auf akzeptanzmindernde Faktoren beleuchten. Vertiefend wird die Schallausbreitung dieser Anlagen anhand einer Schallimissionsprognose untersucht, da es bisher kaum Studien zu dieser Thematik aus raumplanerischer Sicht gibt. Die Ergebnisse zeigen, dass dieser Anlagentyp gegenüber den konventionellen Anlagen neue Flächennutzungsmöglichkeiten bietet und eine Alternative zu den bestehenden Anlagentypen im Rahmen der Energiewende darstellen könnte.

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“…Recent studies have, therefore, focused on increasing our understanding of fish behaviors in response to local flow hydrodynamics and other environment parameters. Relevant studies include McNamara et al [23], Goodwin et al [24], Dabiri [25], Oteiza et al [26], Bever and MacWilliams [27], Ramon et al [28], Goodwin et al [29], among others.…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristics at a River Diversion Juncture and Implications for Juvenile Salmon Entrainment

Lai

2022

Fluids

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Flow structures at a river diversion juncture are complex and have been studied extensively. Their impact on the juvenile salmon entrainment into the side channel, however, is less investigated, and based mostly on empiricism. In this study, a Eulerian fish tracking model is developed and used in conjunction with a 3D flow solver to quantitatively evaluate the implications of complex flow characteristics at typical junctures on fish entrainment. First, the flow model is validated with the available experimental data, key flow structures are examined using the results, and their implications for fish entrainment are discussed. Next, the numerical fish tracking model is used to show that the cross-sectional fish distribution immediately upstream of a juncture is an important factor that controls fish entrainment efficiency. Fish entrainment efficiency curves are developed for different flow diversion ratios and fish distribution patterns and used to shed light on the reasons behind some field-observed fish entrainment patterns. Further, the model is used to show that the secondary flow in a river bend may have a significant impact on fish entrainment at flow junctures, in agreement with field observations. Finally, a submerged vane is demonstrated to be a potential management option to locally generate secondary flows upstream of a juncture to achieve the desired fish entrainment property.

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How fish feel the flow

Cited by 26 publications

References 6 publications

Perspectives on Larval Behaviour in Biophysical Modelling of Larval Dispersal in Marine, Demersal Fishes

Perspectives on Larval Behaviour in Biophysical Modelling of Larval Dispersal in Marine, Demersal Fishes

Das Potenzial von vertikalen Windenergieanlagen im Kontext wachsender Flächennutzungskonflikte und Akzeptanzprobleme der Windenergie

Flow Characteristics at a River Diversion Juncture and Implications for Juvenile Salmon Entrainment

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