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Hydro System Related Mortality And In Lake Behaviour Of Migrating Adult Sockeye Salmon In The Seton Anderson Watershed British Columbia
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Book Synopsis Hydro-system Related Mortality and In-lake Behaviour of Migrating Adult Sockeye Salmon in the Seton-Anderson Watershed, British Columbia by :
Download or read book Hydro-system Related Mortality and In-lake Behaviour of Migrating Adult Sockeye Salmon in the Seton-Anderson Watershed, British Columbia written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon carry out long distance spawning migrations from ocean feeding grounds to natal freshwater streams. Because many salmon rivers are dammed, fishways are required to enable individuals to pass through dams and reach upstream spawning areas. However, many fishways are ineffective, preventing or delaying upstream passage, suggesting a need to monitor and evaluate these facilities. I conducted a literature review of studies evaluating the effectiveness of fishways to assess what taxa and life-stages have been studied, the questions asked during evaluation, and how these varied by time or geographic location. The majority of studies focused on adult fishes (68%) and the order Salmoniformes (58%). Many studies evaluated exogenous mechanisms of passage failure, such as environmental or structural factors (69%). Few studies examined endogenous (i.e. physiological) factors or post-passage consequences, information that is necessary to understand passage failure and inform mitigation strategies. A field study was carried out to evaluate the impact of a dam and fishway on the spawning migrations of sockeye salmon in the Seton-Anderson watershed in British Columbia. I used acoustic telemetry, non-lethal biopsies, and an experimental approach, releasing fish either up- or down-stream of the dam and comparing behaviour and mortality between the two groups. Fishway passage efficiency was 80% and most failure was associated with failing to locate the entrance. Attraction to the fishway entrance varied with water discharge volume from the dam, with the longest delays and highest failure rate at the highest discharge. Fish released downstream of the dam suffered higher mortality in lakes upstream of the fishway (27%) compared to fish released downstream of the dam (7%), suggesting post-passage consequences that reduce survival. Sockeye migrating through two thermally stratified lakes upstream of the dam were used as models to investigate the hypothesis that temperatures.
Book Synopsis The Cumulative Effects of Physiology, Temperature, and Natal Water Cues on the Migration Behaviour and Survival of Adult Sockeye Salmon During Passage Through the Seton River Hydroelectric System, British Columbia by : Collin Thomas Middleton
Download or read book The Cumulative Effects of Physiology, Temperature, and Natal Water Cues on the Migration Behaviour and Survival of Adult Sockeye Salmon During Passage Through the Seton River Hydroelectric System, British Columbia written by Collin Thomas Middleton and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Migration of Adult Sockeye Salmon in Puget Sound and Fraser River by : Henry O'Malley
Download or read book Migration of Adult Sockeye Salmon in Puget Sound and Fraser River written by Henry O'Malley and published by . This book was released on 1919 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature and Discharge Conditions Associated with Migration of Adult Sockeye Salmon Entering the Docee River and Long Lake Watershed, B.C. from 1968-2012 by : H. W Stiff
Download or read book Temperature and Discharge Conditions Associated with Migration of Adult Sockeye Salmon Entering the Docee River and Long Lake Watershed, B.C. from 1968-2012 written by H. W Stiff and published by . This book was released on 2015 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Babine Watershed, 1946-2014 by :
Download or read book Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Babine Watershed, 1946-2014 written by and published by . This book was released on 2015 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical meteorological and hydrological data were assembled to review the influence of changes in these environmental factors on patterns of adult Sockeye migration in the Babine River, British Columbia. Regional air temperature data collected from Environment Canada meteorological stations were statistically related to intermittent water temperature time-series (2003-2014) recorded at the Babine fish fence to hind-cast daily water temperature in Babine River for 1910-2014. Flow data from two hydrometric stations in the Babine watershed were statistically-related to construct a continuous daily discharge time-series for 1945-2014. A stratified categorical frequency analysis of daily migration rates versus water temperature and flow conditions, lagged 0-7 days earlier, was used to discern the most likely combination of threshold values for temperature, discharge and associated time lags contributing to daily fence count variation.
Book Synopsis Historic Water Temperature (1924-2018), River Discharge (1929-2018), and Adult Sockeye Salmon Migration (1937-2018) Observations in the Columbia, Okanogan, and Okanagan Rivers by : Kim Dennis Hyatt
Download or read book Historic Water Temperature (1924-2018), River Discharge (1929-2018), and Adult Sockeye Salmon Migration (1937-2018) Observations in the Columbia, Okanogan, and Okanagan Rivers written by Kim Dennis Hyatt and published by . This book was released on 2020 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Homing Behavior of Adult Sockeye Salmon in Response to a Hydroelectric Diversions of Homestream Waters at Seton Creek by : International Pacific Salmon Fisheries Commission
Download or read book Homing Behavior of Adult Sockeye Salmon in Response to a Hydroelectric Diversions of Homestream Waters at Seton Creek written by International Pacific Salmon Fisheries Commission and published by . This book was released on 1989 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Homing Behavior of Adult Sockeye Salmon in Response to a Hydroelectric Diversion of Homestream Waters at Seton Creek by : Fretwell, Michael R
Download or read book Homing Behavior of Adult Sockeye Salmon in Response to a Hydroelectric Diversion of Homestream Waters at Seton Creek written by Fretwell, Michael R and published by . This book was released on 1989 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Behavior and Survival of Radio-tagged Sockeye Salmon During Adult Migration in the Snake and Salmon Rivers by : Matthew L. Keefer
Download or read book Behavior and Survival of Radio-tagged Sockeye Salmon During Adult Migration in the Snake and Salmon Rivers written by Matthew L. Keefer and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Conservation efforts for critically endangered Snake River sockeye salmon (Oncorhynchus nerka) have been partially hindered by high en route mortality of adult fish during their ~1,450 kilometer freshwater spawning migration. Through the 1990s, Snake River sockeye were poised on the brink of extinction, with annual returns averaging fewer than five fish. A moderate recovery began in 1999, when the first adult progeny from a captive broodstock program returned from the ocean. The largest run in several decades returned in 2000, with 299 fish counted at Lower Granite Dam on the Snake River. Taking advantage of this rare opportunity, we collected and radio-tagged 31 adults at the dam and then monitored their migration behavior and survival over ~750 kilometers. Tagged fish migrated rapidly through the Lower Granite reservoir and successively more slowly through each upstream reach. Successful and unsuccessful fish migrated at similar rates through the lower study reaches, after which unsuccessful fish migrated significantly more slowly than successful fish. Survival dramatically declined late in the run after mean water temperatures exceeded 21 °C and daily maximums reached 23-24 °C. Several fish displayed thermoregulatory behavior during the warmest period, using cooler water from tributaries including the Clearwater and Grande Ronde rivers. Fish with injuries at the time of tagging (e.g., head injuries, lesions, gill net marks) were less likely to survive than fish without notable injuries. Notably, fish with injuries were concentrated in the later portion of the run, suggesting possible condition-dependent delay during migration in the lower Columbia and Snake rivers. Overall, results strongly suggest indirect sublethal temperature effects, possibly mediated by poor initial fish condition. Migration in water temperatures near tolerance thresholds may exacerbate mortality risks, and these risks are most likely for fish with later migration timing. In fact, sockeye salmon counts at Ice Harbor indicate that there may have been recent selection against later-timed adult sockeye salmon. High en route mortality of Snake River sockeye will likely persist or increase given projections for continued warming of their migration corridor."--Abstract (page iv).
Book Synopsis Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Chilko-Chilcotin Watershed, 1975-2012 by :
Download or read book Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Chilko-Chilcotin Watershed, 1975-2012 written by and published by . This book was released on 2017 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Historical meteorological, water discharge and water temperature data were assembled to review the influence of changes in these environmental factors on daily migration patterns of adult Sockeye en route to their Chilko River spawning grounds (1975-2012), a major tributary to the Chilcotin River, British Columbia. Air temperature data, adjusted and homogenized for climate analyses, were obtained for a regional meteorological station (at Williams Lake), and statistically related to intermittent water temperature time-series (spanning 1996-2012) in the Chilko and Chilcotin rivers to hind-cast daily mean water temperature for 1940-2012 at key sites along the migration route. Flow data from two hydrometric stations in the watershed were statistically-related to construct continuous daily discharge time-series for 1927-2012 at the same sites. A stratified categorical frequency analysis of daily water temperature and flow levels versus standardized daily migration lagged 0-20 days earlier was used to discern the most likely combination of threshold values for temperature, discharge, and time lag contributing to daily migration rate variation. The resulting critical thresholds were applied in exceedance analyses to review trends in flow & temperature events pertinent to Chilko Sockeye migration"--Abstract, p. v.
Book Synopsis Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Quesnel/Horsefly Watershed by : H. W. Stiff
Download or read book Water Temperature, River Discharge, and Adult Sockeye Salmon Migration Observations in the Quesnel/Horsefly Watershed written by H. W. Stiff and published by . This book was released on 2018 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical meteorological, water discharge and water temperature data were assembled to review the influence of changes in these environmental factors on daily migration patterns of adult Sockeye enroute to the Horsefly River spawning grounds via the Quesnel River, a major tributary of the Fraser River, British Columbia. This report documents the data assembled for derivation of historic water temperature and flows affecting Quesnel Sockeye Salmon on the final leg of their migration to the spawning grounds in the Horsefly watershed. This document includes an introduction, methods, results, discussion, conclusions, and recommendations.--Includes text from document.
Book Synopsis Effect of Water Temperature, Timing, Physiological Condition and Lake Thermal Refugia on Success of Migrating Adult Sockeye Salmon by : Martin Todd Mathes
Download or read book Effect of Water Temperature, Timing, Physiological Condition and Lake Thermal Refugia on Success of Migrating Adult Sockeye Salmon written by Martin Todd Mathes and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms Controlling Migration of Sockeye Salmon Fry by : E. L. Brannon
Download or read book Mechanisms Controlling Migration of Sockeye Salmon Fry written by E. L. Brannon and published by New Westminster, B.C. : International Pacific Salmon Fisheries Commission. This book was released on 1972 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Migration and Survival of Juvenile Spring Chinook Salmon and Sockeye Salmon Determined by a Large-scale Telemetry Array by :
Download or read book Migration and Survival of Juvenile Spring Chinook Salmon and Sockeye Salmon Determined by a Large-scale Telemetry Array written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis documents the use a large-scale acoustic telemetry array to track hatchery-reared salmon smolts during their seaward migration, presents estimates of early marine survival, and describes migration behaviour in the ocean of two species of Pacific salmon from the Columbia and Fraser River basins. In the Columbia River basin, it is hypothesized that seaward migrating Snake River spring Chinook salmon suffer from "delayed mortality" due to passage through eight hydropower dams or "differential delayed mortality" from transportation via barge around the dams. I tested these hypotheses by comparing survival of in-river migrating smolts from the Snake River basin to 1) a Yakima River population that migrated past only four dams and 2) a Snake River group that was transported around all dams. Early marine survival estimates of non-transported Snake and Yakima smolts from the mouth of the Columbia River to Vancouver Island (a 485 km, one month journey) was equal in both 2006 and 2008 (2007 estimates were not available), which contradicts the delayed mortality theory. Early marine survival for the transported groups was slightly higher than for the in-river migrants, again contradicting the differential delayed mortality theory. These measurements form the first direct experimental test of key theories concerning juvenile fish survival in the coastal ocean. Cultus Lake sockeye salmon are a genetically unique population from the Fraser River basin and are now endangered due to the very low return of adults in recent years. Mean survivorship of smolts (2004-7) from release to the northern Strait of Georgia ranged from 10-50%, while survivorship to the final sub-array in Queen Charlotte Strait ranged from 7-28%. Cultus Lake smolts displayed four migratory behaviours: northward migration to enter the Pacific Ocean via Queen Charlotte Strait; westward migration through the Strait of Juan de Fuca; migration into Howe Sound before continued the migration north; and migra.
Book Synopsis Environmental and Physiological Influences on the Behaviour and Survival of Adult Sockeye Salmon During Their Coastal Migration by : Stephen Matthew Drenner
Download or read book Environmental and Physiological Influences on the Behaviour and Survival of Adult Sockeye Salmon During Their Coastal Migration written by Stephen Matthew Drenner and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Physiology, Behaviour, and Fate of Up-river Migrating Sockeye Salmon (Oncorhynchus Nerka) in Relation to Environmental Conditions in the Fraser River, British Columbia by : Michael Ryan Donaldson
Download or read book The Physiology, Behaviour, and Fate of Up-river Migrating Sockeye Salmon (Oncorhynchus Nerka) in Relation to Environmental Conditions in the Fraser River, British Columbia written by Michael Ryan Donaldson and published by . This book was released on 2008 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of the Sockeye Salmon Problems Created by the Alcan Project in the Nechako River Watershed by : International Pacific Salmon Fisheries Commission
Download or read book A Review of the Sockeye Salmon Problems Created by the Alcan Project in the Nechako River Watershed written by International Pacific Salmon Fisheries Commission and published by . This book was released on 1953 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
