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 182 for “"River system"”.
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Reproductive Biology of the Rabbitsfoot Mussel (Quadrula Cylindrica) (Say, 1817) in the Upper Arkansas River System, White River System and the Red River System
… endangered species in the upper Arkansas River system of Kansas and Missouri. I compared reproductive biology and life history of three rabbitsfoot populations. These data are needed for management actions and may also be useful in assessing diversity among rabbitsfoot populations. …
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Major element geochemistry of the Amazon River system
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1980.
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Distribution of Rotifera and Cladocera in a regulated river system
… of Rotifera and Cladocera in the Kanawha River in West Virginia. Rotifera were sampled monthly for twelve months with a Juday trap in the more lotic upstream end of Winfield pool (UW), and the more lentic downstream end of Winfield pool (LW) to determine seasonal distribution. During the …
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Metal transport in the Aberjona river system : monitoring, modeling, and mechanisms
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Sewage, salt, and sediments: water-quality assessment of the lower Vaal-Orange River system
… ABSTRACT: Water users in the lower Vaal-Orange River system are subjected to chemicals and pathogens from sources over which they have little control. These sources include raw sewage from dysfunctional wastewater-treatment works, saline irrigation return flows and upstream discharges from the …
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Hydrological aspects of brown trout management in the Selwyn River system, Canterbury, New Zealand
… the hydrological characteristics of the Selwyn River system, Canterbury, New Zealand, on management of the brown trout (Salmo trutta) fishery. The project has four main aims: to describe the hydrological characteristics of the Selwyn River system; to outline the streamflow-related requirements …
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Movement and habitat use of lake sturgeon (Acipenser fulvescens) in the South Saskatchewan River system
… and disruption caused by large dams on the rivers they inhabit have greatly impacted this species. Lake Sturgeon in Alberta are part of an Endangered population as defined by the Committee on the Status of Endangered Wildlife in Canada. The goal of this study was to gather more information …
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Locational and temporal patterns in microorganisms potentially affecting water quality in the Dan River system
River ecosystems across the US and globally face numerous stressors that impact both ecological function and water quality. In 2015-16, municipalities along the Dan River in southern Virginia experienced repeated taste and odor (TandO) issues in their drinking water that originated from the river …
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Embryotoxicity of dioxin-like chemicals extracted from American eels (Anguilla rostrata) from the St. Lawrence River System
The American eel (Anguilla rostrata) has suffered a serious population decline in Lake Ontario since the early 1980s due to a decline in recruitment of juveniles migrating from the Sargasso Sea. This has resulted in the closure of the Lake Ontario fishery in 2004 and its listing as endangered under …
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Historical and contemporary distributions of aquatic mollusks in the upper Conasauga River system of Georgia and Tennessee
The Conasauga River, an upper Coosa River tributary, was historically one of the most diverse rivers within the Mobile basin drainage for freshwater mollusks. The Conasauga River historically supported 37 species of unionids (Bivalvia: Unionidae), 11 species of prosobranch gastropods (Mollusca: …
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Anthropogenic Influence on Blackfin Sucker (Thoburnia atripinnis) Distribution, in the Upper Barren River System, Kentucky and Tennessee
… effort and abundance within the Upper Barren River (UBR) system, a priority conservation area, in south-central Kentucky. Anthropogenic impacts have rendered T. atripinnis a “species of greatest conservation need” by the Kentucky Department of Fish and Wildlife Resources. This study focused on …
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Assimilation of a Wastewater Treatment Plant Effluent by the Asa Creek - Kaskaskia River System, Moultrie County, Illinois
Made available in DSpace on 2014-12-12T01:27:40Z (GMT). No. of bitstreams: 1 7317135.pdf: 3919851 bytes, checksum: fc676daf721dd10ae274acf924ae7855 (MD5) Previous issue date: 1972
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Distribution and Population Characterization of Clinch Dace (Chrosomus sp. cf. saylori) in the Upper Clinch River System, Virginia
… in just eight tributaries to the upper Clinch River. A management plan, which should include both population monitoring and habitat restoration, is still lacking for the species. Population monitoring must balance high detection probability with low risk of injury to captured individuals. I …
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Some chemical and biological aspects of water pollution in a portion of the upper Qu'Appelle River system
Water pollution has received increasing attention in recent years. With modern industrialization and increasing urbanization, the need for the preservation of our aquatic resources has become obvious. Shortages of water in some areas, whether due to climatic conditions or the destruction of the …
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Assessment of mudpuppy (Necturus maculosus) presence along the St. Clair-Detroit River System using environmental DNA and occupancy modeling
… status of mudpuppies along the St. Clair-Detroit River System (SCDRS) is lacking, and since they are important bio-indicators, they could be a gauge for restoration success. Environmental DNA (eDNA) and occupancy modeling were used to determine best detection practices for this cryptic species. …
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Population Distribution and Abundance of the Blackfin Sucker (Thoburnia atripinnis) in the Upper Barren River System, Kentucky and Tennessee.
… (~155mm) endemic to the headwaters of the Barren River System (UBR) in Kentucky and Tennessee. Due to its isolated distribution and relatively small geographic inhabitance, the blackfin sucker is considered a Species of Greatest Conservation Need (SGCN) in Kentucky by the Kentucky Department of …
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