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Dataset for: Sediment and Nutrient Transport Through a Reservoir Sequence Along a Large River System
No full textReservoirs are highly effective at sequestering both sediments and sediment-bound nutrients, such as silts and phosphorus (P), but are also capable of depositing significant quantities of nutrients with more complex biogeochemical pathways, like nitrogen (N). Because of the growing prevalence of human altered watersheds and regulated rivers, there is a growing need to understand how reservoirs function both individually and as reservoir sequences within large rivers and their watersheds. Models have simulated the overall efficiency and drivers of reservoir nutrient deposition, but few have considered how a sequence of reservoirs alter deposition as an interconnected watershed-sediment-transport-system. In this study, we collected sediment cores from a six-reservoir sequence along a 5th – 6th order stream receiving treated waters from a large metropolitan area in the Southeast United States. Using paleolimnological techniques, we compared nutrient deposition to reservoir morphological qualities and primary producer community structure during the past ~50 years. Our findings suggest phosphorus deposition is associated with reservoir order downstream of the primary nutrient source, nitrogen deposition is linked to reservoir water retention time, and N:P is most strongly linked to reservoir surface area and watershed population density. Our results were strongly influenced by a large upstream and metropolitan nutrient source, fairly common in large rivers, but under different conditions of nutrient loading, reservoirs may express other nutrient depositional patterns
Everyday Inclusion Begins with Me: Diversity and Intergroup Communication in the Workplace
Get PDFJoin us to explore actions at the individual level that help create an environment where diverse perspectives flourish and a desired long-term outcome is to attract, recruit, and retain a workforce of librarians from diverse backgrounds. Panelists will present topics on communication in the workplace, including intergroup bias, microagressions, and informal/formal mentoring. Leave this program empowered to make thoughtful, positive changes in your daily interactions with professional and paraprofessional colleagues
George Eliot's Provincial Life: New Acquisitions at the Beinecke Library
No full textArticle from the George Eliot Review, digitized and hosted by the George Eliot Review Online.Publishe
Mountain or Molehill? Developing Online Tutorials on Web Source Evaluation
Get PDFThis poster will discuss Auburn University’s two newest online Articulate tutorials on web source and news source evaluation. The poster will discuss our philosophy behind separating online web source and news source evaluation, share ideas for active learning opportunities in an autonomous online setting, and discuss future additions or opportunities to expand the current tutorials as web sources become more prevalent in undergraduate writing assignments
George Eliot According to Women Then and Now: A Comparison of Observations by Her Contemporaries and Women Today
No full textArticle from the George Eliot Review, digitized and hosted by the George Eliot Review Online.Publishe
Wave Normal Angle Distribution of Magnetosonic Waves in the Earth's Magnetosphere: 2-D PIC Simulation
Get PDFRadiation belt electrons can be accelerated and scattered by magnetosonic waves in the Earth's magnetosphere, and the scattering rate of electrons is sensitive to the wave normal angle. However, observationally it is difficult to identify the wave normal angle within a few degrees. In this study, using 2-D particle-in-cell (PIC) simulations, we investigate the wave normal angle distribution of magnetosonic waves excited by ring distribution protons. Both the linear theory and simulations have shown that the wave normal angles are distributed over a narrow range (82 degrees -89 degrees) with a major peak at about 85 degrees during the linear growth stage when the proton ring velocity is close to the Alfven speed. In addition, 2-D PIC simulations further demonstrated that the waves tend to have larger wave normal angles (84 degrees -89 degrees) during the saturation stage since the waves with smaller wave normal angles are dissipated faster. It is also found that wave normal angles decrease with the increase of wave frequency. With the increase of the ring velocity of the proton ring distribution, the perpendicular wavenumber of excited magnetosonic waves decreases, which leads to the decrease of the wave normal angle. The simulation results provide a valuable insight to understand the property of magnetosonic waves, and the findings are useful for the global simulations of radiation belt dynamics. Key Points Using 2-D PIC simulations, the wave normal angle distribution of magnetosonic waves has been investigated The wave normal angles are distributed over a narrow range (82 degrees -89 degrees) during the linear growth stage The wave normal angles decrease with the increase of the ring velocity of the proton ring distributionPublishedYe
Performance of small grain varieties in Alabama, 2019-2020
Get PDFAt head of title: Variety report. "July 6, 2020