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Showing 1 to 20 of 20 for “"lake oahe"”.
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Bioenergetics of Walleye in Lake Oahe, South Dakota
… the trophic interactions of walleyes in Lake Oahe, South Dakota. Monofilament gill nets were set at three depths in the water column (bottom, suspended, and surface) from May through September, 1994 to determine the effect of gill net placement on catch rates of walleyes. Catch per unit …
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Bioenergetics of Rainbow Trout in Lake Oahe, South Dakota
… trout Oncorhynchus mykiss have been stocked in Lake Oahe, South Dakota for the past 25 years. In recent years spawning runs of rainbow trout have increased, providing South Dakota Department of Game, Fish and Parks biologist the opportunity to substantially increase stocking rates. Concern exist …
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Food Habits of Walleyes in Lake Oahe, South Dakota
… (YOY} walleyes were determined in Okobojo Bay of Lake Oahe, South Dakota, from June through September, 1991. Walleyes initially fed on zooplankton. Copepods, Diaptomus and Cyclops, were initially important for zooplanktivorous walleyes with Diaptomus being elected for and Cyclops elected against. …
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Estimating Trophic Position of Lake Oahe Walleye Using Stable Isotope Analysis
… walleye Sander vitreus growth and condition in Lake Oahe, South Dakota. In recent years, the rainbow smelt population has decreased appreciably in Lake Oahe. This decline, combined with strong (successive) year classes of walleye, has resulted in reduced walleye growth. Although traditional diet …
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Life History and Bioenergetics of Chinook Salmon in Lake Oahe, South Dakota
… the trophic interactions of chinook salmon in Lake Oahe, South Dakota. During each year of the study chinook salmon were sampled monthly from May through September and in February using experimental monofilament gill nets. Chinook salmon from 117 to 872 mm total length were sampled from the …
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Bioenergetics and Life History of Rainbow Smelt in Lake Oahe, South Dakota
Lake Oahe was formed by closure of Oahe Dam on the Missouri River by the U.S. Army Corp of Engineers in August, 1958. The reservoir reached full pool in December of 1967 and extends from Pierre located in North-central South Dakota into the southern third of North Dakota near Bismarck (June 1974). …
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Influence of Rainbow Smelt Predation on Zooplankton Community Composition in Lake Oahe, South Dakota
Rainbow smelt Osmerus mordax were introduced into Lake Oahe, South Dakota, in the 1970's. I studied rainbow smelt and zooplankton interactions in Lake Oahe during 1990 to evaluate the influence of rainbow smelt predation on the zooplankton community. Zooplankton composition and abundance and the …
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Strobe Light Effects On Stress and Avoidance Behavior in Fishes and Distribution of Zooplankton in Lake Oahe, South Dakota
… (no./l) and distribution of zooplankton in Lake Oahe, South Dakota. To quantify stress and avoidance behaviors, representative fish taxa from five families were evaluated and included: Centrarchidae (largemouth bass Micropterus salmoides), Cyprinidae (fathead minnows Pimephales promelas), …
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Food Habits and Distribution of the Emerald Shiner, Notropis atherinoides Rafinesque, and the Spottail Shiner, Notropis hudsonius (Clinton), in Lake Oahe, South Dakota
… shiner Notropis hudsonius at three sites on Lake Oahe, South Dakota, in 1990. Emerald and spottail shiners were among the most abundant species sampled in beach seine hauls between May and September. Spottail shiners were occasionally caught in small mesh gill nets. Emerald shiners were …
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Factors Influencing Rainbow Smelt Entrainment Through Oahe Dam, South Dakota
… the entrainment of rainbow smelt through Oahe Dam. Rainbow smelt are an important forage species for walleye and salmonids in Lake Oahe. Loss of rainbow smelt, from Lake Oahe through turbine entrainment could, if of sufficient magnitude, exacerbate variability in smelt population dynamics. …
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Behavioral Responses of Rainbow Smelt to Sensory Deterrent Systems
… the primary prey fish for top-level predators in Lake Oahe. Historically, water level management and entrainment losses of rainbow smelt at the Lake Oahe dam have likely contributed to the reduced growth rate of walleye Sander vitreus, chinook salmon Oncorhynchus tshawytschu, as well as other …
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Interactions between Walleye Sander vitreus and Smallmouth Bass Micropterus dolomieu in Missouri River reservoirs
… (post-stocking) 2019 and 2021 from three bays in Lake Oahe, SD, two were stocked with Walleye (30-32 mm; 255-1,649 Walleye/ha) whereas one served as a reference. We estimated predator population abundance using Schnabel capture-recapture models and used bioenergetics to estimate the percent of …
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Productivity and Trophic Interactions in the Missouri River Impoundments
… in the Missouri River. Coldwater habitat in Lake Oahe, for example, provides refuge for rainbow smelt Osmorus mordax --- a forage species that contributes significantly to walleye Sander vitreus production. In contrast, prey fish populations in downstream impoundments are dominated by gizzard …
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Electrophoretic and Morphological Evaluation of Stizostedion Species Collected from Lake Sakakawea, North Dakota
… vitreum vitreum and sauger S. canadense in Lake Sakakawea, North Dakota were identified electrophoretically using the species-specific marker malate dehydrogenase. Hybrids represented 10% of 279 percids analyzed. Univariate analysis indicated that counts for eight meristic characters of …
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Development, Growth, and Behavioral Ecology of Walleye as Influenced by Sublethal Exposure to Dietary Selenium
… Stizostedion vitreum sport fishery in lower Lake Oahe, South Dakota, was documented in the early l 980's and has since been attributed to poor natural reproduction and/or recruitment. Contaminants are highly suspected in lower Lake Oahe because of the low natural reproduction/recruitment and …
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Assessment of White Bass Populations in Missouri River Impoundments Located in South Dakota
… portion of the total harvest of sport fishes in Lakes Oahe, Sharpe, Francis Case, and Lewis and Clark, but little is known about their population dynamics. Age-0 white bass catch per unit effort (CPUE) in standardized seine samples from 1983 to 1995 was correlated with environmental data to …
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Smallmouth Bass Seasonal Dynamics in Northeastern South Dakota Glacial Lakes
… bass were introduced into many South Dakota lakes in the late 1980’s and the introductions have resulted in many self-sustaining populations. As smallmouth bass become more popular in South Dakota there is a need to better manage these smallmouth bass populations. The objectives of this study …
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A Survey of the Fishes and Habitat of the Cheyenne River in South Dakota
… at nine reaches between Angostura Dam and Lake Oahe on the mainstem Cheyenne River during the summer months of 1996 and 1997. Thirty species representing ten families were collected. The fish community was dominated by the Cyprinidae, Ictaluridae, and Catostomidae families with 85% of the …
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Entrainment of Rainbow Smelt Through Oahe Dam, South Dakota
The recreational fishery in Lake Oahe is presently supported almost entirely by a single prey species, rainbow smelt Osmerus mordax. Population size of rainbow smelt has been variable, confounding management decisions that require an understanding of prey availability. Biologists are aware that …
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Characterization and prediction of long-term arsenic mobility, dissolution, and kinetic behavior in arsenic contaminated floodplain deposits of Whitewood Creek and the Belle Fourche River, South Dakota
… to the BFR into the Cheyenne River and Lake Oahe and will continue for many generations.