Facteurs biologiques à prendre en compte dans la conception des ouvrages de franchissement, notions d'obstacles à la migration

Larinier, M.

doi:10.1051/kmae:1992003

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…Some brown trout leaps observed were superior to theoretical leaping capacity of the species (Beach 1984). These results confirm that the theoretical trajectories do not take into account the actual hydraulic heterogeneity used by fish, such as the velocity at the foot of a drop as well as the additional propulsive force cause by the beating caudal fins at the moment it leaves the surface of the water (Larinier 1992). Furthermore, the theoretical curves do not consider microhabitat conditions that fish probably exploit.…”

Section: Discussionsupporting

confidence: 58%

Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers

Ovidio¹,

Capra²,

Philippart³

2007

Fisheries Management Eco

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Between 1996 and, adult brown trout, Salmo trutta L. (n ¼ 40) and European grayling, Thymallus thymallus (L.) (n ¼ 39) were radio-tracked in three southern Belgium rivers to assess their capabilities to bypass various obstacles. During their upstream migrations individuals encountered different types of physical obstacles and successfully passed some under variable environmental conditions. The obstacles cleared by the fish were characterised based on a simple topographical description protocol and compared with tracking data. The ability of trout and grayling to pass different typologies of physical obstacles in natural river systems is discussed in the context of enabling their free movement in rivers.

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Section: Discussionsupporting

confidence: 58%

Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers

Ovidio¹,

Capra²,

Philippart³

2007

Fisheries Management Eco

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“…The survival rates estimated in this study are in the upper limit of the range reported for rainbow trout of similar size (Normandeau Associates, Inc. 2002) and for other fish species passing through Francis turbines (Davies 1988;Eicher and Associates, Inc. 1987;Larinier and Dartiguelongue 1989;Bell 1990;Winchell et al 1992;Larinier 1992) and similar to survival rates through larger Kaplan turbines (Mathur et al 1996). Why the survival rates estimated in this study were so high is unclear.…”

Section: Discussionsupporting

confidence: 45%

Survival of Juvenile Rainbow Trout Passing through a Francis Turbine

Dedual¹

2007

N American J Fish Manag

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The immediate survival rate of juvenile rainbow trout Oncorhynchus mykiss (fork length, 81 6 1 mm) that passed through a Francis turbine at Hb Dam on the Hinemaiaia River in the central North Island of New Zealand was estimated at 95.6 6 1.1% (mean 6 SE). The survival rate decreased to 93.1 6 1.4% after 24 h and remained unchanged after 96 h. The survival rate was derived using maximum likelihood estimators for a tag-recapture model involving three releases of 200 fish of similar average length, and the mortality due to handling was estimated using a control of 200 similarly sized fish. The high survival of juvenile rainbow trout (,80 mm) passing through the Francis turbine at Hb power station provides a safe route for fish migrating downstream from Hb Lake into the Hinemaiaia River and Lake Taupo. *

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Passage facilities for Diadromous freshwater shrimps (Decapoda: Caridea) in the Bananier River, Guadeloupe, West Indies

Fiévet

2000

Regul. Rivers: Res. Mgmt.

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The relative selectivity of two fast‐flowing concrete channels acting as passage facilities for shrimps was investigated at two low‐head dams by comparing shrimps migrating through the channels to shrimps captured by experimental (trapping) passes offering splash zones. Complementary visual observations of shrimp behaviour were also carried out. At both dams (150 and 320 m above sea level (a.s.l.)), the upstream migration was mainly undertaken by small (subjuvenile) individuals but some larger ones, notably Atya innocous adults, were also captured. Strong water currents (1.5 m s−1) in the concrete channels compelled most shrimps to climb over the vertical walls but only the smallest individuals were able to do this. Thus, lower proportions of larger individuals were captured in the passage facilities than in the experimental passes. In the same way, the lightly built Macrobrachium spp. was found in lower proportions in the passage facilities than in the experimental passes. Furthermore, because of submerged orifices and whirling currents, the continuous‐flow tanks which supplied the channels with water trapped numerous climbing shrimps. Hence, because they do not take biological criteria into account, the passage facilities investigated here were not only selective but also inefficient for shrimps. Finally, the benefits of such installations for shrimps are doubtful and simple waterfalls flowing over spillways would be at least as efficient, if not more so. Copyright © 2000 John Wiley & Sons, Ltd.

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Facteurs biologiques à prendre en compte dans la conception des ouvrages de franchissement, notions d'obstacles à la migration

Cited by 7 publications

References 4 publications

Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers

Field protocol for assessing small obstacles to migration of brown trout Salmo trutta, and European grayling Thymallus thymallus: a contribution to the management of free movement in rivers

Survival of Juvenile Rainbow Trout Passing through a Francis Turbine

Passage facilities for Diadromous freshwater shrimps (Decapoda: Caridea) in the Bananier River, Guadeloupe, West Indies

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