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Full-Text Articles in Aquaculture and Fisheries

Influence Of Amino Acid Supplementations In Juvenile Yellow Perch Fed Plant Protein Combinations, Aaron J. Von Eschen, Michael L. Brown, Kurt A. Rosentrater Apr 2019

Influence Of Amino Acid Supplementations In Juvenile Yellow Perch Fed Plant Protein Combinations, Aaron J. Von Eschen, Michael L. Brown, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Publications

Distillers dried grains with solubles (DDGS) in combination with soy protein concentrate (SPC) with and without an essential amino acid (EAA) complex were assessed as protein alternatives in juvenile Yellow Perch Perca flavescens diets. Diets contained 5% FM, 40% SPC, and 20% or 40% DDGS each with or without EAA. No mortalities or health assessment differences were observed during the trial and all fish readily accepted the experimental diets. Diets supplemented with EAA produced greater weight gain, improved feed conversion, and apparent protein digestibility. Performance was consistently improved for fish fed diets containing amino acid supplements. Based on these results ...


Developmental And Functional Analysis Of Scutes In The Armored Catfish Corydoras Aeneus, Emily Volk Jan 2019

Developmental And Functional Analysis Of Scutes In The Armored Catfish Corydoras Aeneus, Emily Volk

Undergraduate Honors Theses

Fish scales are specialized biological structures of current interest in innovative materials design because of the combination of protective function, flexibility, and light weight they offer. This study presents a developmental and functional investigation of a particular fish scale structure, the scutes (bony external plates) of the armored Bronze Corydoras Catfish (Corydoras aeneus). Scutes in this model fish species were analyzed via three complementary approaches. First, scutes were documented throughout fish development via high-quality microscope images. These images were subsequently used to inform fabrication of synthetic models to characterize the relationship between scute overlap and overall bending stiffness of scute ...


Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid Suleiman, Kurt A. Rosentrater Jul 2018

Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid Suleiman, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Publications

The worldwide decline and overexploitation of ocean fisheries stocks had provided an incentive for the rapid growth of aquaculture. The aquaculture industry has been recognized as the fastest-growing food production system globally, with a 10% increase in production per year and is one of the most reliable and sustainable growth markets for manufactured feeds. Extrusion technology has been extensively used in the modern aquatic feed manufacturing, due to nutritional, physical properties improvements and cost effectiveness of feeds. Cost related to aquatic feed remains the biggest challenge, especially for small-scale producers. In order to understand costs and potential breakeven points, a ...


Habitat Use Of Blacktip Sharks (Carcharhinus Limbatus) At Fishing Piers, Kelsey L. Spencer Dec 2017

Habitat Use Of Blacktip Sharks (Carcharhinus Limbatus) At Fishing Piers, Kelsey L. Spencer

Electronic Theses and Dissertations

Blacktip sharks (Carcharhinus limbatus) can be observed near fishing piers throughout the summer along the northeast coast of South Carolina. These piers attract and support a wide variety of potential prey and sharks are able to forage on fishers’ discards with minimal energetic cost. I tagged 12 blacktip sharks with acoustic transmitters, monitored piers with acoustic receivers, and conducted pier-creel surveys to determine the habitat use of blacktip sharks at fishing piers, factors that influenced residence time and presence/absence at piers, and any cyclical patterns in visits to piers. Data were analyzed with pier association indices (PAI), mixed models ...


Continuing Improvements Of The Sharkduino Animal Tag System, William Laney Dec 2017

Continuing Improvements Of The Sharkduino Animal Tag System, William Laney

Undergraduate Honors Theses

Much about the movement and habits of marine animals is still unknown. This information can be found for terrestrial animals through direct observation or video surveillance; however, these optical methods are not effective in aquatic environments. To circumvent this problem, researchers “tag” aquatic animals with small sensor systems that record data about the animals movements. The researchers then recover the tag and use signal analysis to draw conclusions about the habits of the animal. Unfortunately, commercially available tags are expensive and most can only be used once. We created an inexpensive and reusable tag to be used on sandbar sharks ...


Rice Hull Bioreactor For Recirculating Aquaculture, Marlon A. Greensword Aug 2017

Rice Hull Bioreactor For Recirculating Aquaculture, Marlon A. Greensword

LSU Doctoral Dissertations

The engineering of floating media biofilters has been optimized over the years. The backwashing process has made them more energy and water efficient. Likewise, moving bed bioreactors (MBBR) are gaining interest and popularity because they are relatively affordable to build. Yet, developing countries’ aquaculture production remains largely excluded from the advances made in recirculating aquaculture systems (RAS). This discrepancy is partially driven by the high costs of media such plastic beads and Kaldnes (KMT) media, commonly used in MBBR.

This dissertation evaluates the usability and profitability of rice hulls (RH), an abundant by-product in many developing nations, as a sinking ...


Effects Of Nonaerated Circulation Water Velocity On Nutrient Release From Aquaculture Pond Sediments, Xiangju Cheng, Dantong Zhu, Xixi Wang, Deguang Yu, Jun Xie Jan 2017

Effects Of Nonaerated Circulation Water Velocity On Nutrient Release From Aquaculture Pond Sediments, Xiangju Cheng, Dantong Zhu, Xixi Wang, Deguang Yu, Jun Xie

Civil & Environmental Engineering Faculty Publications

Sustaining good water quality in aquaculture ponds is vital. Without an aerator, the dissolved oxygen in ponds comes primarily from mass transfer at the water-ambient atmosphere interface. As sediment can seriously affect water quality, this study used indoor experiments to examine the nutrient (nitrogen and phosphorus) release mechanisms and fluxes from sediment in aquaculture ponds with moving water but no aeration. The results showed that the ammonia nitrogen (NH3-N) concentration in the overlying water was inversely proportional to flow velocity and that a higher flow velocity tended to result in a lower concentration in the overlying water, a ...


Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid A. Suleiman, Chenxu Yu, Kurt A. Rosentrater Dec 2016

Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid A. Suleiman, Chenxu Yu, Kurt A. Rosentrater

Chenxu Yu

The worldwide decline and overexploitation of ocean fisheries stocks had provided incentive for rapid growth of aquaculture. The aquaculture industry has been recognized as the fastest-growing food production system globally, with a 10% increases in production per year, and is one of the most reliable and sustainable growth markets for manufactured feeds. Extrusion technology has been extensively used in the modern aquatic feed manufacturing, due to nutritional, physical properties improvements and cost effectiveness of feeds. Cost related to aquatic feed remains the biggest challenge, especially for small-scale producers. In this study a single screw extruders and three different scenarios (i ...


Session E8: Can We Measure Cumulative Effects Of Hydro-Power On Migratory Fish? Development Of A Cumulative Effects Model Framework, Iain Stewart-Russon, Simon Palmer, David Fraser May 2016

Session E8: Can We Measure Cumulative Effects Of Hydro-Power On Migratory Fish? Development Of A Cumulative Effects Model Framework, Iain Stewart-Russon, Simon Palmer, David Fraser

David Fraser, PhD

Abstract: The Environment Agency provides guidance for run-of-river hydropower schemes in England, but concerns about small effects from multiple single schemes led to a project to determine how these can be assessed and to test an approach on migratory fish populations. We developed a model to assess the impact of multiple hydropower schemes. The model forecasts catchment-scale cumulative effects using three elements: hydropower scheme, spatial fish population and fish life cycle. The scheme element includes effects that are important to migratory fish and those that can be quantified. These are: 1) impediment to up- and downstream migration; 2) alleviation of ...


Early Life History Of Three Pelagic-Spawning Minnows Macrhybopsis Spp. In The Lower Missouri River, T. A. Starks, M. L. Miller, J. M. Long Jan 2016

Early Life History Of Three Pelagic-Spawning Minnows Macrhybopsis Spp. In The Lower Missouri River, T. A. Starks, M. L. Miller, J. M. Long

US Army Corps of Engineers

Life-history characteristics of age-0 sturgeon chub Macrhybopsis gelida, shoal chub Macrhybopsis hyostoma and sicklefin chub Macrhybopsis meeki were compared using several methods. All Macrhybopsis species consumed mostly midge pupae, but M. meeki had the most general diet (Levins’ index, B=0⋅22) compared with M. hyostoma (B=0⋅02) and M. gelida (B=0⋅09). Morisita’s diet overlap index among species pairs ranged from 0⋅62 to 0⋅97 and was highest between M. hyostoma and M. gelida. Daily ages estimated from lapilli otoliths for each species ranged from 15 to 43 days for M. gelida, 19 to 44 ...


The Development Of A Fluorescence-Based Reverse Flow Injection Analysis (Rfia) Method For Quantifying Ammonium At Nanomolar Concentrations In Oligotrophic Seawater, William Abbott Nov 2015

The Development Of A Fluorescence-Based Reverse Flow Injection Analysis (Rfia) Method For Quantifying Ammonium At Nanomolar Concentrations In Oligotrophic Seawater, William Abbott

Graduate Theses and Dissertations

The goal of this thesis was to adopt a reverse flow injection analysis (rFIA) technique to the fluorometric analysis of the reaction o-phthaldialdehyde (OPA) with ammonium, allowing accurate measurements of ammonium concentrations lower than the detection limit of the widely used indophenol blue (IPB) colorimetric method while accounting for the background fluorescence of seawater. Ammonium is considered an essential nutrient for primary productivity, especially in the nutrient depleted surface ocean where as the most reduced form of dissolved inorganic nitrogen, it is readily assimilated via metabolic pathways. Challenges in the quantification of ammonium require more sensitive analytical techniques for ...


Techno-Economic Analysis (Tea) And Life-Cycle Assessment (Lca) Of Extruded Aquafeed, Chinwendu F. Ozoh, Kurt A. Rosentrater Jul 2015

Techno-Economic Analysis (Tea) And Life-Cycle Assessment (Lca) Of Extruded Aquafeed, Chinwendu F. Ozoh, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The increasing world population has led to higher demand for protein source; Fish is a very good source of protein for humans. Hence, the need for more farmed fish. The aquaculture industry has been recognized as the fastest growing food production system globally, with a 10% increase in production every year. It is also one of the sustainable and reliable growth market for manufactured feed. This study was carried out to optimize cost and environmental performance in the production of aquaculture feed for small scale producers. Techno-economic analysis (TEA) and Life-cycle assessment (LCA) were tools for the analysis. In this ...


Life Cycle Assessment (Lca) And Techno-Economic Analysis (Tea) Of Tilapia-Basil Aquaponics, Kun Xie, Kurt A. Rosentrater Jul 2015

Life Cycle Assessment (Lca) And Techno-Economic Analysis (Tea) Of Tilapia-Basil Aquaponics, Kun Xie, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Aquaponics is the system combining hydroponic and aquaculture, in which fish and plants are raised together, and they can be beneficial from each other as well as to each other. When the system is maintained properly and is in a balance status, aquaponics will mimic the natural ecosystem, use much less water than traditional aquaculture, and have almost no effluent. As a result, it is thought more environmentally friendly and sustainable. In this study, both Life Cycle Assessment (LCA) and Techno-Economic Analysis (TEA) of a tilapia and basil aquaponic system were conducted. Three scales, including a truly running system, pilot ...


Session E9: Function Control Of Fish Migration Facilities At The Hydro Power Plant Kostheim At River Main, Dr. Jörg Schneider Jun 2015

Session E9: Function Control Of Fish Migration Facilities At The Hydro Power Plant Kostheim At River Main, Dr. Jörg Schneider

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Applying various conventional and modern monitoring methods a function control of downstream migration facilities and turbine passage related mortality was conducted at the Kostheim Hydro Plant (4,9 MW; two Kaplan turbines; Δh max. 3,74 m, at MQ 2,36 m) at the river Main (km 3,2). Furthermore, the perceptibility and passability of a nature-like bypass for upstream migration was examined. Results showed a size selectivity of the bypass caused by an unsuitable entrance position 40 m downstream of the outlet of the turbines. The effectiveness of the downstream migration facilities proved to be low, leading to ...


Session C9: Cle Elum Dam Fish Passage: Novel, Research Driven Designs To Allow Downstream Passage For Juvenile Salmonids, Jason Wagner Jun 2015

Session C9: Cle Elum Dam Fish Passage: Novel, Research Driven Designs To Allow Downstream Passage For Juvenile Salmonids, Jason Wagner

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

When Cle Elum Dam (Washington, USA) was constructed, a highly productive sockeye salmon fishery was lost. As part of the proposed Yakima Basin Integrated Plan, fish passage will be restored at this site. For the migrating adults, a trap and haul fish collection facility will be constructed. For downstream juvenile salmon passage, a selective level outlet works, helical fish slide, and outfall will be constructed. The juvenile passage features groundbreaking research; primarily that of the helical fish slide. The presentation will cover aspects of the history of the project, the research driven designs, and the final designs (to be ...


Session A9: To Fill Or Not To Fill: Stream Simulation And Embedded Aquatic Organism Passage Structures, Robert Gubernick, Dan Cenderelli, Mark Weinhold, Dale Higgins, Jessica Kozarek, Sara Mielke Jun 2015

Session A9: To Fill Or Not To Fill: Stream Simulation And Embedded Aquatic Organism Passage Structures, Robert Gubernick, Dan Cenderelli, Mark Weinhold, Dale Higgins, Jessica Kozarek, Sara Mielke

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Throughout North America stream simulation and embedded / recessed culverts are used to facilitate the passage of aquatic organisms thru road stream crossings. Although the concept of naturelike streambeds inside these structures is widely embraced, the design methodology and construction practice varies widely between state and federal agencies. Much debate has occurred with one specific requirement, whether or not to place stream bed material inside these structures. Not placing bed material inside structures assumes on going sediment transport processes will fill the structure’s interior with streambed materials. This is assumed to be a cost saving measure from both a ...


Session A9: Maintaining Agency Capacity For Ongoing And Future Road-Stream Crossing Challenges, Kurt Gernerd Jun 2015

Session A9: Maintaining Agency Capacity For Ongoing And Future Road-Stream Crossing Challenges, Kurt Gernerd

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The USDA Forest Service is dedicated to managing the habitat, watersheds and terrestrial and aquatic organisms that live and migrate through the National Forest lands and waters throughout the United States, Alaska, Hawaii and Puerto Rico. To achieve our mission and advance sound stewardship of all natural and manmade resources, we work closely with tribes, local, state and federal agencies, our stakeholders, and partners to find sciencebased solutions to complex ecological issues. Within our National Forests there is a large transportation network that is vital to communities and the economy, and this network also includes many road‐stream crossings ...


Session E9: Incorporating Fish Friendly Solutions In Existing Pumping Stations; An Economical Solution Enabling Fish Migration, Lars Krakers Jun 2015

Session E9: Incorporating Fish Friendly Solutions In Existing Pumping Stations; An Economical Solution Enabling Fish Migration, Lars Krakers

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The low lying parts of Holland are vulnerable to flooding and are therefore heavily protected by dykes and several pumping stations. These however cause serious obstacles to migratory fish. Pumping stations can be lethal barriers for fish migration. Currently a lot of pump manufacturers are developing new fish friendly pumps. To fit these new pumps in existing pumping stations, usually civil adjustments are required at considerable costs. A more cost effective alternative would be to perform a fish friendly upgrade of the existing pumps.

During the last 3 years Flowserve conducted excessive research to increase their knowledge on fish ...


Session B9: How Fish Use And Process Flow Information, Joachim Mogdans, Horst Bleckmann Jun 2015

Session B9: How Fish Use And Process Flow Information, Joachim Mogdans, Horst Bleckmann

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Fish use the mechanosensory lateral line and the acoustic system for the processing of hydrodynamic information. With their lateral line fish perceive the amplitude, direction and frequency content of water motions relative to their body and tail fin surface as well as local pressure gradients across their head and trunk. With the acoustic system fish detect the particle displacement component and the pressure amplitude of a sound wave. Both, the lateral line and acoustic system, play an important role in many fish behaviors, including schooling, predator avoidance, intraspecific communication and prey detection. With the acoustic system fish not only ...


Session C9: Priest Rapids Fish Bypass: A Case Study From Start To Finish, Curtis Dotson Jun 2015

Session C9: Priest Rapids Fish Bypass: A Case Study From Start To Finish, Curtis Dotson

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Priest Rapids Dam is a large (955 MW) hydroelectric dam on the Columbia River in Washington State, USA. As part of regulatory requirements associated with its FERC (Federal Energy Regulatory Commission) license and other agreements, the Public Utility District No. 2 of Grant County, WA was required to design and install non-turbine fish passage for downstream migrating juvenile salmonids at the dam, for the purpose to help meet its pre-establish survival standards for salmonid smolts passing through the Priest Rapids Hydroelectric Project during their downstream migration. This presentation is a case study highlighting the numerous steps that went into ...


Session E9: Cumulated Mortalities Of Salmon And Eel In The Turbines Of The Loire-Brittany District, Cédric Briand, Marion Legrand, Pierre-Marie Chapon, Laurent Beaulaton, Gaelle Germis, Marie-Andree Arago, Timothee Besse, Laura De Canet, Pierre Steinbach Jun 2015

Session E9: Cumulated Mortalities Of Salmon And Eel In The Turbines Of The Loire-Brittany District, Cédric Briand, Marion Legrand, Pierre-Marie Chapon, Laurent Beaulaton, Gaelle Germis, Marie-Andree Arago, Timothee Besse, Laura De Canet, Pierre Steinbach

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The effect of dams on mortality during downstream migration was simulated using distribution and mortality models in the whole Loire-Brittany water district (155 000 Km2). A combination of models was used: (1) juvenile habitats for smolts, (2) productivity of juvenile salmon habitats, (3) production of silver eels (EDA model), The models (1)*(2) and (3) were used to predict the number of downstream migrants in the current conditions and with a transparent upstream migration. (4) Turbine mortality was calculated from either the characteristics of the turbine (diameter, rotation speed, height ...) or by extrapolation from the average mortality when information ...


Session A9: Green Infrastructure And Blue Habitat: Impacts Of Watershed Conditions And Stormwater Management On River Health And Fish Passage, Cathy Bozek Jun 2015

Session A9: Green Infrastructure And Blue Habitat: Impacts Of Watershed Conditions And Stormwater Management On River Health And Fish Passage, Cathy Bozek

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Actions and land use in the watershed impact river habitat quality and fish migration. Stormwater runoff from developed land often carries high sediment loads that obstruct rivers, and excess nutrients that promote dense vegetation blooms, leading to conditions that severely hinder fish passage. Research shows that watershed impervious cover is a strong indicator of fluvial fish community health. Expanding directly-connected impervious surface in the watershed increases these impacts, while improved stormwater management can reduce the impacts and benefit the river system. Green infrastructure, including both sitespecific best management practices and landscape level conservation and restoration of natural lands, provides ...


Session B9: Influence Of Biometric Parameters, Flow Condition And Water Temperature On Iberian Fish Sprinting Behavior: Volitionally Swimming Performance, Jorge Ruiz-Legazpi, Francisco‐Javier Sanz-Ronda, Francisco‐Javier Bravo-Cordoba, Sergio Makrakis, Theodore Castro-Santos Jun 2015

Session B9: Influence Of Biometric Parameters, Flow Condition And Water Temperature On Iberian Fish Sprinting Behavior: Volitionally Swimming Performance, Jorge Ruiz-Legazpi, Francisco‐Javier Sanz-Ronda, Francisco‐Javier Bravo-Cordoba, Sergio Makrakis, Theodore Castro-Santos

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Knowing the swimming ability of fish is important to detect movement limitations through hydraulic structures: fish passes weirs and slots, gauging stations, culverts, bridges foundations and other. All these obstacles are collectively referred to "velocity barriers". Fish behavior will determine the passage of these structures through combination of fish swimming performance and motivation. Once the fish decides to enter the barrier, must swim faster than the speed of the flow to advance. Thus, the swimming performance depends on the fish speed and fatigue time. To estimate these values, we experimented in an open channel flow with fish samples of ...


Session E9: Migration Of Atlantic Salmon (Salmo Salar) At Low-Head Archimedean Screw Hydropower Schemes, Robert Brackley, Colin Bean, Rhian Thomas Jun 2015

Session E9: Migration Of Atlantic Salmon (Salmo Salar) At Low-Head Archimedean Screw Hydropower Schemes, Robert Brackley, Colin Bean, Rhian Thomas

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

There has been a rapid increase in development of small-scale hydropower schemes across Europe. Such schemes may impact upon migratory fish populations through modification of migration pathways. There is a clear need for scientific evidence to inform guidelines for the design, placement and management of small-scale hydropower schemes for the protection of migratory fish. The proliferation of the Archimedean screw turbine (AST) for lowhead applications is concerning because although these turbines are purported to cause negligible damage to fish passing through them, the available data is limited.

The studies presented assess the impacts of low-head AST hydropower schemes on ...


Session B9: Size Matters Even For The Ubiquitous Fish Speed Metric Of Bl/S, Chris Katopodis, Rick Gervais Jun 2015

Session B9: Size Matters Even For The Ubiquitous Fish Speed Metric Of Bl/S, Chris Katopodis, Rick Gervais

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The use of BL/s, i.e. body lengths per second (dimensions of s-1), to express relative swim speeds for fish is very common. The physiological literature demonstrates the following: a) fish length is a strong predictor of swimming performance; b) longer fish achieve higher absolute swim speeds (dimensions of m/s) than shorter ones, at least for the same species; c) when swim speeds are expressed in BL/s, shorter fish have higher relative speeds than longer ones. Therefore, it is difficult to estimate swim speeds of large fish from small fish and vice versa, when using these ...


Session B8: Swimming Behaviour Of Beluga And Stellate Sturgeons During Their Migration In The Lower Danube River, Stefan Honţ, Marian Paraschiv, Marian Iani, Radu Suciu, Lucian Oprea Jun 2015

Session B8: Swimming Behaviour Of Beluga And Stellate Sturgeons During Their Migration In The Lower Danube River, Stefan Honţ, Marian Paraschiv, Marian Iani, Radu Suciu, Lucian Oprea

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The Lower Danube River (LDR) still supports three naturally self-sustaining species of anadromous sturgeons. Beluga sturgeons (Huso huso) and stellate sturgeons (A. stellatus) are still common while Russian sturgeons (Acipenser gueldenstaedti) became very rare. Studying their swimming behaviour is essential for understanding (i) the impact of construction works aiming to improve conditions for navigation; (ii) sturgeon behaviour in relation to Iron Gate hydropower and navigation systems; (iii) behaviour of young sturgeons during downstream migration towards the Black Sea. A significant number of wild adult sturgeons (N= 103; 39 beluga, 1 Russian and 63 stellate) was implanted with acoustic transmitters ...


Session E8: Efficiency Measurements As Tool In Evaluating Fishways, Jan H. Kemper, Quincy A. De Bruijn Jun 2015

Session E8: Efficiency Measurements As Tool In Evaluating Fishways, Jan H. Kemper, Quincy A. De Bruijn

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The awareness of the importance of free fish migration in the Netherlands is reflected in the increasing number of fishways that has been built in the past decade. The intention is that all the bottlenecks will be solved before 2027.

Equally important as the realization of fishways, is the evaluation of the design. In other words, are all species and size classes that want to pass, truly able to pass the structure. The challenge in this type of research is to avoid interference of the measuring tools with the fish migrants. The conventional monitoring fyke, does not meet this ...


Session B8: Changes In Fish Passage Metrics Following The Co-Location Of A Low-Head Hydropower Turbine With An Existing Fish Pass; Revealed By An Acoustic Tracking Study Of Migratory Salmonids, Richard A.A. Noble, Jon D. Bolland, Jamie R. Dodd, Sam E. Walton, Terry Coddington, Ian G. Cowx, Jon Hateley, Jim Gregory Jun 2015

Session B8: Changes In Fish Passage Metrics Following The Co-Location Of A Low-Head Hydropower Turbine With An Existing Fish Pass; Revealed By An Acoustic Tracking Study Of Migratory Salmonids, Richard A.A. Noble, Jon D. Bolland, Jamie R. Dodd, Sam E. Walton, Terry Coddington, Ian G. Cowx, Jon Hateley, Jim Gregory

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Co-location of hydropower turbine outfalls with fish pass entrances has been suggested as current best practice to optimise the attraction flows for the fish pass and to mitigate the perceived negative impacts of small run-of-river hydropower schemes. To test this a five year acoustic tracking study was instigated to monitor the installation of a low-head Archimedes screw turbine alongside an existing pool-traverse fish pass on Ruswarp Weir, at the tidal limit of the River Esk (England). The study tracked the behaviour of salmon and sea trout as they approached the weir and fish pass and determined the overall passage ...


Session C8: River Mill Dam Downstream Migrant Integrated Collector And Bypass, Peter Christensen Jun 2015

Session C8: River Mill Dam Downstream Migrant Integrated Collector And Bypass, Peter Christensen

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

The River Mill Dam Hydroelectric Development is part of the Clackamas River Hydroelectric Project in northwest Oregon, USA owned and operated by Portland General Electric (PGE). A downstream migrant fish collector and bypass facility was installed on the dam in 2012. The dam was constructed in 1911, and although a fish ladder was included at the time, and upstream passage of anadromous and resident fish has always been provided, downstream passage was only possible through the turbines or over the spillway until the collector and bypass was added. The collector is unique in that attraction water used to entice ...


Session E8: Fish Migration Possibilities In The Netherlands; State Of The Art (Barriers, Solutions, Monitoring), Martin Kroes, Herman Wanningen, Niels Breve, Peter Van Puijenbroek Jun 2015

Session E8: Fish Migration Possibilities In The Netherlands; State Of The Art (Barriers, Solutions, Monitoring), Martin Kroes, Herman Wanningen, Niels Breve, Peter Van Puijenbroek

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Measures to restore fish migration is gaining a major boost in the Netherlands since the Water Framework Directive, Benelux Regulation and Eel Directive are operational. Water managers, responsible for a good ecological status, are working hard to reach free fish migration in their waters.

Currently, 1.124 measures are realized at barriers like weirs, pumping stations, sluices and culverts. 2.745 barriers are identified. Since 2000, there is a strong development of measures and new techniques.

These results are based on a study “The Netherlands living with Fish Migration”, that was started in 2008. Target of this study was ...