.... Container-based sanitation (CBS) systems safely contain and transport excreta for treatment and reuse, though urine is often contained but not treated. A major challenge of urine-nutrient recovery is the shift in nitrogenous species in urine during storage, from urea to ammonia (NH 3 ) and ammonium (NH 4...

... pathways for ecosystem nitrogen (N) loss, especially in arid regions where hydrologic N losses are comparatively small. To characterize how multiple factors affect soil NH 3 emissions, we measured NH 3 losses from 6 dryland sites along a gradient in soil pH, atmospheric N deposition, and rainfall. We also...

... NH 4 + concentrations. Yet, phytoplankton uniformly grew well on all dissolved inorganic nitrogen sources, including effluent and NH 4 + . Diatom species were the most abundant taxa at all stations, and diatom cell abundances increased at greater rates than all other taxa over the course...

...W. Berry Lyons; Elsa Saelens; Kathleen A. Welch; Oliver Chadwick Fossil fuel use associated with scientific activities in the Taylor Valley, Antarctic has been examined to determine the fluxes of particulate organic and elemental carbon and nitrogen as well as NO x for the 2015–2016 austral summer...

... the recovery trajectory of the restored wetland, we also sampled an active agricultural field and two mature forested wetlands. Our results show that nitrogen (N) and phosphorus (P) concentrations in soil solution were 2–10 times higher in the restored wetland compared to two mature forested wetlands...

... management strategies decreased wetland nitrogen retention, this effect was transient and disappeared shortly after management ceased. Our results suggest that considering nutrient inputs in invaded wetlands can inform and improve management, and reducing nutrient inputs is an important component...