Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 96 for “"Fish Community"”.
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Fish Community Assembly in the Missouri River Basin
Warmwater fish communities of the Missouri River basin are poorly studied. I conducted a series of investigations intended to explain fish community structure and composition therein. I focused on relations between environmental characteristics and fish species because abiotic factors are …
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TROPHIC DYNAMICS OF THE LAKE SUPERIOR FISH COMMUNITY
… and ecological requirements of the entire fish community, including predators and prey fishes, has not been assessed on a whole-lake scale in over a decade. Here, I investigated the trophic dynamics across multiple regions of the lake, and estimated the consumptive effect of lean lake charr …
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Patterns in Fish Community Structure in a Regulated River
… the abundance, composition, and distribution of fish communities in the lower Roanoke River, a hydropeaking system in North Carolina. Fishes were sampled at before and after peaking events over three years; 2007 to 2009. I evaluated trends in species richness, diversity, and assemblage …
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Fish Community Assembly At Multiple Spatial Scales In East Texas Streams
… scales. Therefore, revealing how stream fish communities are influenced by environmental gradients may clarify how communities respond to disturbance associated with anthropogenic change. I investigated the relative role environmental variables play in the processes that structure the …
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Relation of Habitat to Fish Community Characteristics in Small South Dakota Impoundments
… South Dakota waters, the relation of habitat to fish populations and communities in small South Dakota impoundments has not been extensively researched. Most of the research on small South Dakota impoundments has focused on fish community structure and predator/prey relationships. Previous …
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Barcoding and eDNA metabarcoding of a rapidly changing Neotropical freshwater fish community
… region comprises one of the greatest freshwater fish diversities in the world. Conservation and management actions in freshwater realms face great challenges in this region due to an insufficient knowledge base (e.g. shortage of taxonomic expertise, lack of robust, routine, standardised …
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Fish Community Structure and Associated Habitat in the James River, Southwest Missouri
… study was to determine the relationship between fish populations and habitat characteristics in the mainstem of the James River in Southwest Missouri. Establishing a history of the existing fish and habitat populations is necessary to formulate a robust Index of Biotic Integrity (IBI), an …
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Fish community response to reservoir habitat enhancement across multiple spatio-temporal scales
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Recreational disturbance of a desert stream fish community: Detecting ecological effects of environmental impact
Fish assemblages in 22 pools were sampled over the summer of 1997 in the North Fork of the Virgin River, Zion National Park, Utah, to assess effects of recreational activities on native fish communities. Pools experiencing high levels of wading and float tubing contained altered population …
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Influence of Gizzard Shad on Fish Community Ecology in Northeastern South Dakota Glacial Lakes
… Sander vitreus are the most popular sport fish in South Dakota, while yellow perch Perca flavescens are important both ecologically as prey for walleye and economically as an important sport fish themselves. Gizzard shad Dorosoma cepedianum are also an ecologically important species in many …
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Resident fish community impacts on stocked rainbow trout ecology in 15 eastern Washington lakes
… research was to analyze the effects of resident fish communities and lake habitat on energy source use and trophic position of stocked rainbow trout. Stable isotope analysis was used to accomplish this goal, with stable carbon isotope ratios indicating the source of carbon, pelagic or littoral, …
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Longitudinal Variation in Fish Community Along the Upper Green River Below the Green River Lake
… These types of alterations can influence fish communities. Twelve sites were sampled along the Upper Green river in order to address the potential influence of impoundment on fish communities below the Green River Lake. The habitat features: mean depth, flow, dominant substrate, …
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Evaluation of the Larval Fish Community in the Missouri River Below Garrison Dam, North Dakota
… is little information on the ichthyoplankton community in the Missouri River below Garrison Dam in North Dakota. In addition, little is known about the effects that the hydropeaking operations of Garrison Dam may have on that community. The objectives of this study were to determine the …
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Fish Community Assembly in the Forest River, North Dakota, and Resolution of Campostoma Species Presence
… was provided the opportunity to investigate the fish community associated with the Red River basin of North Dakota. The first aspect I examined was the presence of the genus Campostoma. In this aspect, I investigated the Campostoma species that were present historically and documented the species …
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Fish Community Structure and Water Quality Assessment (Index of Biotic Integrity) of the San Marcos River, Texas
… was conducted on the San Marcos River to examine fish community structure by surveying fishes and to assess water quality and impacts from point and nonpoint sources using the Index of Biotic Integrity (181). The stable water temperature, flow and clarity found in the headwaters of the San Marcos …
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Modelling the food web in the Irish Sea in the context of a depleted commercial fish community
Irish Sea landings used to be dominated by finfish but now mainly consist of molluscs and crustacea due to stock declines and changing market demands. There has been limited evidence of finfish recovery despite fishing effort reductions, gear restrictions, and area closures. Frustrated and …
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Seasonal fish community and reproductive biology of fishes in two tributaries of the lower Missouri River, USA
… habitats for spawning, rearing and feeding of fish in connected river systems. Regulation of rivers may alter the fish communities and environmental variables triggering fish use. Habitat destruction from dam construction is one of the leading causes for the decline of aquatic species, …
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Assessment of the effects of impingement and entrainment on the fish community of the New River, Virginia
… the intake of the Glen Lyn Power Station on the fish community of the New River, Glen Lyn, Virginia. Estimates of the numbers of fishes impinged by the Glen Lyn Power Station were made for the period mid-May 1976 through May 1977. The estimated total impingement was 6219 fish of 22 species. The …
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Characterizing spatial and temporal trends in fish community diversity in the inland lakes of Isle Royale, MI, USA
… impact, providing an opportunity to explore how fish diversity has natural shifted with minimal confounding effects. I analyzed fish assemblages of 23 lakes sampled in the 1920s, 1990s, and 2020s to 1) assess temporal shifts in species richness and composition 2) identify lakes and species …
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