Results 261 to 270 of about 360,193 (299)

Downstream migration of juvenile fish in the Krasnaya River (Vietnam)

Journal of Ichthyology, 2010
The first material is presented on downstream migration of fish juveniles in the Krasnaya River, one of the largest rivers in South-East Asia. The spatial-temporal structure of distribution of downstream-migrating fish juveniles in the Krasnaya River has traits usually characteristic of migration in rovers with turbid water.
V. K. Nezdolii, D. S. Pavlov, Tran Thanh Lan, Pham Hong Phuong, Nguyen Quoc Khanh   +4 more
openaire   +1 more source

The Migrant Dipper: A Trap for Downstream-Migrating Fish

The Progressive Fish-Culturist, 1966
(1966). The Migrant Dipper: A Trap for Downstream-Migrating Fish. The Progressive Fish-Culturist: Vol. 28, No. 2, pp. 96-102.
openaire   +1 more source

Downstream migration of early larvae of the European river lamprey Lampetra fluviatilis

Doklady Biological Sciences, 2014
Migrations at early stages of development are char acteristic of many animal species. Their adaptive sig nificance is related to distribution of individuals and occupation of the trophic part of the area. As a rule, juveniles of aquatic animals are distributed through downstream migration due to the transporting force of water flow. Many studies deal
D S, Pavlov, D Yu, Nazarov, A O, Zvezdin, A V, Kucheryavyi   +3 more
openaire   +2 more sources

A diffusion model for the downstream migration of sockeye salmon smolts

Ecological Modelling, 1994
Abstract The smolt migration (the migration from their nursery lake to the sea) of sockeye salmon ( Oncorhynchus nerka ) is modeled as one-dimensional diffusion with drift. The average downstream velocity of smolts is assumed proportional to the water velocity and water velocity is modeled based on Manning's roughness formula.
openaire   +1 more source

Downstream Migration of Silver-Phase Anguillid Eels

2003
Downstream migration of adult anguillid eels in freshwater habitats marks the end of a long, generally slow growth phase, abandonment of a home range, and initiation of a seaward spawning migration. Although different species of Anguilla exhibit variation in characteristics of this migratory phase, some generalized traits in migration are common to ...
openaire   +1 more source

Downstream migration: problems, devices, research and development

1995
Rappel des problèmes posés par les aménagements hydroélectriques à la dévalaison des migrateurs. Evocation des différents dispositifs permettant de réduire ces dommages. Définition des priorités à accorder dans le domaine de la recherche et du développement.
Larinier, M., Travade, F.
openaire   +1 more source

Method for Monitoring Downstream-migrating Alewives

The Progressive Fish-Culturist, 1980
George S. Libey, James R. Beltz
openaire   +1 more source

An examination of differential survival in downstream migrating coho salmon smolts

2008
The smolt stage of the life history of Pacific salmon (Onchorhynchus sp.) has received little attention relative to the other life history stages. I examined mortality during the downstream migration of coho salmon (0. kisutch) smolts by trapping and marking smolts high in the watershed and recapturing the fish near the ocean.
openaire   +1 more source

Definition of a strategy for re-opening the Garonne and Ariège rivers for downstream migration of salmon: simulation of fish mortality caused by hydroelectic installations during downstream migration

2000
Le principal objectif de cette étude était de concevoir un modèle permettant d'apprécier les pertes cumulées lors du passage des juvéniles de saumon atlantique en dévalaison par les différents aménagements hydroélectriques équipant le bassin de la Garonne en amont de Toulouse.
Bosc, Serge, Larinier, M.
openaire   +1 more source

Investigation of turbulent flows using spillway models aiming to aid downstream migration of fish

River Research and Applications, 2023
Ali Shirinzad
exaly