Results 11 to 20 of about 79,500 (263)

Hydrological conditions of functioning of Ust-Manych fish channels

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2023
Ust-Manych fi shing channels are characterized by low efficiency of their work, which inflicts damage on the regional fishery. The analysis of the channel design enabled to establish a number of errors and shortcomings of their layout and design ...
Viktor N. Shkura, Aleksey V. Shevchenko
doaj   +1 more source

Drifting with Flow versus Self-Migrating—How Do Young Anadromous Fish Move to the Sea?

open access: yesiScience, 2019
Summary: The downriver migration process of young anadromous fish has a far-reaching impact on their survival rate and the efficacy of hatchery-reared fish release, but it is poorly understood.
Zhenli Huang
doaj   +1 more source

Unravelling the life history of Amazonian fishes through otolith microchemistry [PDF]

open access: yesRoyal Society Open Science, 2016
Amazonian fishes employ diverse migratory strategies, but the details of these behaviours remain poorly studied despite numerous environmental threats and heavy commercial exploitation of many species.
Theodore W. Hermann   +3 more
doaj   +1 more source

Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

open access: yesFrontiers in Ecology and Evolution, 2019
Migration strategies in fishes comprise a rich, ecologically important, and socioeconomically valuable example of biological diversity. The variation and flexibility in migration is evident between and within individuals, populations, and species, and ...
Carl Tamario   +4 more
doaj   +1 more source

Hand-drop meadow and modular fish passes at hydroenergetic facilities

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus, 2020
Aim of the study: The purpose of the work is to determine the hydraulic conditions in the high bleed meander passage on the basis of model tests in which the correct migration of aquatic organisms is ensured.
Robert Stanislaw Kasperek   +2 more
doaj   +1 more source

Features of biology and prospects of modern fishery for pacific herring Clupea pallasii on the shelf of southern Kuril Islands

open access: yesИзвестия ТИНРО, 2022
Biological characteristics and dynamics of stocks and fishery are considered for pacific herring in the South-Kuril fishing district on the data of research surveys and fishery statistics for 2014–2021.
A. O. Zolotov   +2 more
doaj   +1 more source

Assessing Diadromous Fish Populations in the Lima River, Northwest Iberian Peninsula

open access: yesFishes
The Lima River in northern Portugal serves as a vital habitat for diadromous fish species, yet it remains one of the least studied aquatic systems in the region.
Luís Pereira   +2 more
doaj   +1 more source

A Mixed Optimal Control Approach for Upstream Fish Migration

open access: yesJournal of Sustainable Development of Energy, Water and Environment Systems, 2019
This paper proposes a simple mathematical model forupstream fish migration along rivers. The model describes the fish migration along a river based on a mixed optimal control approach having swimming velocity, school size, and stopping time of migration ...
Hidekazu Yoshioka   +2 more
doaj   +1 more source

First results of acoustic tags using for studies of migrations of siberian taimen Huho taimen (Salmonidae) in the Tugur River basin (northwestern Okhotsk Sea)

open access: yesИзвестия ТИНРО, 2020
Method of acoustic tagging of large-sized fish in a medium river is successfully tested for the case of siberian taimen Hucho taimen in the Tugur River. Algorithm of fish anesthesia and acoustic tag input into its body cavity is developed. For successful
S. E. Kulbachnyi   +2 more
doaj   +1 more source

In Situ Study on the Influence of a Dark Environment on the Upstream Behaviors of Plateau Fishes in Fishways: A Pilot Study

open access: yesFishes
To help fish to bypass dams and other human-made barriers, some fishways have ingeniously incorporated extended tunnel sections. This innovative design not only optimizes the overall structure of the fishway but also significantly reduces disturbances to
Biao Wang   +9 more
doaj   +1 more source

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