Global ETD Search
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Showing 1 to 4 of 4 for “"Water--Nitrogen content"”.
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Baseline Study for Monitoring Variations in Nitrate Concentration in Surface Waters of Cuyamaca Rancho State Park in Relation to Watershed Types
… in nitrate concentration in the surface waters of five different watershed community types at Cuyamaca Rancho State Park. Monthly water samples were collected at selected sites below each watershed and analyzed by use of a specific ion electrode for nitrate concentration. Results indicate …
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Establishment and trait variation of a range expanding Brassicaceae species under various growth conditions
… various plant traits, including biomass, water content, carbon and nitrogen content, sugar composition as well as the concentrations of leaf glucosinolates, known for their chemical defense properties and commonly found in the Brassicaceae family.<br /> Additionally, I analyzed the leaf …
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Stream microbial communities along an agricultural gradient
… microbes play key roles in decomposition and nitrogen (N) cycling, responses of microbial communities to N additions within watersheds is not well understood. Agriculture contributes excess N into stream systems, predominantly as ammonia, which is transformed through nitrification into nitrate …
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Geomicrobiology of nitrogen in a coastal aquifer : isotopic and molecular methods to examine nitrification and denitrification in groundwater
Excess nitrogen input is deleterious to coastal waters, resulting in deterioration of the water quality, increases in harmful algal blooms and disease in commercial fish stocks. A significant portion of this nitrogen enters coastal waters through groundwater systems. Here we use isotopic and …