Preprints

Filtering by Subject: Systems Biology

Knowing the whole world from the top of a mountain: from orderly systematization to complex explanatory systems

Maarten G Kleinhans

Published: 2021-06-29
Subjects: Earth Sciences, Physical and Environmental Geography, Systems Biology

Fast and fascinating changes in views on nature and systems occurred around 1800, for example in the works of Alexander von Humboldt. While Humboldt rarely used the word system, he searched for the pattern-forming forces of nature by gruesome experiments on animals, including himself, and then drew a map of a mountain that became the basis of biogeography. What did ‘system’ mean then and now, how [...]

Effects of Cone Penetrometer Testing on Shallow Hydrogeology at a Contaminated Site

Terry C. Hazen, Andrew D. Putt, Erin R. Kelly, et al.

Published: 2021-06-07
Subjects: Environmental Engineering, Geotechnical Engineering, Systems Biology, Terrestrial and Aquatic Ecology

Penetration testing is a popular and instantaneous technique for subsurface mapping, contaminant tracking, and the determination of soil characteristics. While the small footprint and reproducibly of cone penetrometer testing makes it an ideal method for in-situ subsurface investigations at contaminated sites, the effects to local shallow groundwater wells and measurable influence on monitoring [...]

Quantifying the Fate of Wastewater Nitrogen Discharged to a Canadian River

Jason J. Venkiteswaran, Sherry Schiff, Brian Ingalls

Published: 2018-06-21
Subjects: Biogeochemistry, Earth Sciences, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Life Sciences, Physical Sciences and Mathematics, Systems Biology, Water Resource Management

Addition of nutrients, such as nitrogen, can degrade water quality in lakes, rivers, and estuaries. To predict the fate of nutrient inputs, an understanding of the biogeochemical cycling of nutrients is needed. We develop and employ a novel, parsimonious, process-based model of nitrogen concentrations and stable isotopes that quantifies the competing processes of volatilization, uptake, [...]

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