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Full-Text Articles in Physical Sciences and Mathematics
Near Infrared-Red Models For The Remote Estimation Of Chlorophyll-Α Concentration In Optically Complex Turbid Productive Waters: From In Situ Measurements To Aerial Imagery, Daniela Gurlin
School of Natural Resources: Dissertations, Theses, and Student Research
Today the water quality of many inland and coastal waters is compromised by cultural eutrophication in consequence of increased human agricultural and industrial activities and remote sensing is widely applied to monitor the trophic state of these waters. This study explores near infrared-red models for the remote estimation of chlorophyll-a concentration in turbid productive waters and compares several near infrared-red models developed within the last 35 years.
Three of these near infrared-red models were calibrated for a dataset with chlorophyll-a concentrations from 2.3 to 81.2 mg m-3 and validated for independent and statistically significantly different datasets with …
Biogeochemical Behavior Of Dissolved Arsenic And Uranium Concentrations In Public Water Supply Wells, Kevin J. Mcvey
Biogeochemical Behavior Of Dissolved Arsenic And Uranium Concentrations In Public Water Supply Wells, Kevin J. Mcvey
School of Natural Resources: Dissertations, Theses, and Student Research
Public water supply (PWS) wells currently contain dissolved uranium concentrations above the federally mandated maximum contaminant level (MCL) of 30 ppb (parts per billion) and dissolved arsenic concentrations above the 10 ppb MCL. Both uranium and arsenic are known to cause various forms of cancer in humans. Variations in total uranium concentrations in PWS wells in Nebraska indicate a relationship to the duration and rate of pumping in specific wells. Although total arsenic concentrations show some variability over time in specific wells, the relationship to pumping is not as clear. Previous studies show that iron and sulfur bacteria present in …
Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi
Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.