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Now showing items 2121-2130 of 3438
Life History and Interspecific Co-Persistence of Native Imperiled Fishes in Single Species and Multi-Species Ex Situ Refuges
(North Dakota State University, 2015)
Like many imperiled fishes, the endangered Pahrump Poolfish (Empetrichthys latos latos) is managed in ex situ refuges. I investigated life history characteristics of females from two such populations at Lake Harriet and ...
OSL Dating of High-Elevation Alluvial Sediments: McMurdo Dry Valleys, Antarctica
(North Dakota State University, 2015)
High-elevation alluvial fans in the McMurdo Dry Valleys are a record of short-term, occasional melting events along the margins of the East Antarctic Ice Sheet. Sediment samples were dated from five fans using Optically ...
Ecology of Cryptosporidium Parasites in Wild Rodent Populations
(North Dakota State University, 2015)
Cryptosporidium is a genus of ubiquitous parasites that have been detected worldwide in nearly 500 species of amphibians, birds, fish, mammals, and reptiles. Most research has focused on the Cryptosporidium species and ...
Impact of Carbon Nanotubes on Bacterial Viability: Indicators, Mitigation, and Role of Phage Shock Proteins
(North Dakota State University, 2014)
The toxicity of single walled carbon nanotubes (SWCNTs) to a model bacterium,
Escherichia coli ATCC 8739 was investigated. Estimates of E. coli viability following treatment
with SWCNTs were similar using four viability ...
Quasi-empirical and Spatio-Temporal Vulnerability Modeling of Environmental Risks Posed to a Watershed
(North Dakota State University, 2017)
Water quality assessment is crucial in investigating impairment within agricultural watersheds. Seasonal and spatial variations on land can directly affect the adjoining riverine systems. Studies have revealed that ...
Alluvial Fans in the McMurdo Dry Valleys: A Proxy for Melting Along Terrestrial Margins of the East Antarctic Ice Sheet
(North Dakota State University, 2013)
Surface melting along Antarctic ice sheet margins is the most poorly understood input in models of future sea level rise. Alluvial fans in the McMurdo Dry Valleys originate from meltwater produced from high-elevation ...
Impact of Artificial Aeration on Nutrients in a Small Eutrophic Lake
(North Dakota State University, 2015)
The Heinrich- Martin Dam Impoundment (HMDI), located in northcentral LaMoure County, North Dakota, is an important water body for fishing, boating, and other recreational activities. To eliminate the thermal stratification ...
Population Genetics of the Western Prairie Fringed Orchid
(North Dakota State University, 2012)
The Western Prairie Fringed Orchid (WPFO) Platanthera praeclara is listed as a federally threatened species in the United States. The habitat of the WPFO is highly fragmented, causing the possibility of genetic isolation ...
Interactions between Ultraviolet Light and Soybean Aphid, Aphis Glycines Matsumura (Hemiptera: Aphididae)
(North Dakota State University, 2013)
Global increases in ultraviolet (UV) radiation have led to greater interest in its current and potential effects on organisms, including insects and plants. Here we report the short-term effects of UV on soybean aphids ...
Seasonality of Some Arctic Alaskan Chironomids
(North Dakota State University, 2016)
Arthropods, especially dipteran insects in the family Chironomidae (non-biting midges), are a primary prey resource for many vertebrate species on Alaska’s Arctic Coastal Plain. Midge-producing ponds on the ACP are ...