This research evaluated the usefulness of the commonly used National Land Cover Database for deriving urban hydrologic parameters, defined metrics linking suburban landscape structure and nitrogen... More > fluxes, and determined variance of hydrologic properties of residential lawns according to social and physical factors. Results suggested that the NLCD is insufficient for urban hydrologic studies due to biases and variability of these datasets. Nitrate concentrations of suburban streams were best characterized by watershed infrastructure. Septic-managed watersheds’ stream nitrate correlated with population density, septic location, and presence of wetlands. Reduced saturated infiltration rates in residential lawns caused only marginal differences in overland flow when compared to regional rain records. Of the factors assessed in this dissertation, waste management infrastructure was defined as the most critical feature explaining nitrate dynamics in the urban landscape.< Less
This research evaluated the usefulness of the commonly used National Land Cover Database for deriving urban hydrologic parameters, defined metrics linking suburban landscape structure and nitrogen... More > fluxes, and determined variance of hydrologic properties of residential lawns according to social and physical factors. Results suggested that the NLCD is insufficient for urban hydrologic studies due to biases and variability of these datasets. Nitrate concentrations of suburban streams were best characterized by watershed infrastructure. Septic-managed watersheds’ stream nitrate correlated with population density, septic location, and presence of wetlands. Reduced saturated infiltration rates in residential lawns caused only marginal differences in overland flow when compared to regional rain records. Of the factors assessed in this dissertation, waste management infrastructure was defined as the most critical feature explaining nitrate dynamics in the urban landscape.< Less
Daisy calibration report for the FertOrgaNic EU project, titled "Improved organic fertiliser management for high nitrogen and water use efficiency and reduced pollution in crop systems".
Daisy calibration report for the FertOrgaNic EU project, titled "Improved organic fertiliser management for high nitrogen and water use efficiency and reduced pollution in crop systems".
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This book is a comprehensive guide to every aspect of freshwater aquarium chemistry. The first chapter deals with the basics of water. Why is water a liquid? What dissolves in water & why?... More > Later chapters delve into pH, hardness, and the nitrogen cycle (ammonia, nitrite, & nitrate). Every chapter explains what each water condition is, how testing for them works, how to know when something is wrong, and (maybe most importantly) what to do to fix it. The last chapter deals with aquarium setup and maintenance -- putting everything together from the previous chapters into a "how to" guide to setting up a new aquarium. The chemsitry throughout the book is described in a simple manner. Both novice & expert aquarists will benefit from the in-depth information presented herein.< Less
