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Viral abundance in aquatic systems:a comparison between marine and fresh waters
The virusto-bacteria ratio was significantly higher in freshwater than marine environments, and there were significantly more bacteria per unit chlorophyll in the authors' freshwater samples, suggesting that this difference is related to the increased dependence of freshwater bacteria on allochthonous material relative to marine systems, as well as the increased relative importance of photosynthetic cyanobacteria in lakes. Expand
The regional and global significance of nitrogen removal in lakes and reservoirs
Human activities have greatly increased the transport of biologically available nitrogen (N) through watersheds to potentially sensitive coastal ecosystems. Lentic water bodies (lakes and reservoirs)Expand
Nitrogen enrichment and the emission of nitrous oxide from streams
[1] Nitrous oxide (N2O) is a potent greenhouse gas produced during nitrogen cycling. Global nitrogen enrichment has resulted in increased atmospheric N2O concentrations due in large part to increasedExpand
Nitrogen transformations and retention in planted and artificially aerated constructed wetlands.
Seasonal variation of the effects of artificial aeration and three different macrophyte species on N processing (removal rates, transformations and export) using experimental CW mesocosms is studied to suggest that the fraction attributed to denitrification losses could be underestimated in this study. Expand
The Haber Bosch-harmful algal bloom (HB-HAB) link
Large-scale commercialization of the Haber–Bosch (HB) process is resulting in intensification of nitrogen (N) fertilizer use worldwide. Globally N fertilizer use is far outpacing that of phosphorusExpand
Diffusive and ebullitive transport of methane and nitrous oxide from streams: Are bubble‐mediated fluxes important?
[1] Using measured rates of bubble release and diffusive gas transport (also termed surface aeration), we address the role of these transport mechanisms in emissions of nitrous oxide and methane fromExpand
Respiration and bacterial carbon dynamics in Arctic sea ice
It is concluded that microbial respiration can consume a significant proportion of primary production in sea ice and may play an important role in biogenic CO2 fluxes between the sea ice, atmosphere and atmosphere. Expand
Greenhouse gas production and efficiency of planted and artificially aerated constructed wetlands.
The introduction of oxygen through artificial aeration combined with plant presence had the overall best performance among the treatments tested in this study, including lowest GWP, greatest nutrient removal, and best hydraulic properties. Expand
Biogenic carbon flows through the planktonic food web of the Amundsen Gulf (Arctic Ocean): A synthesis of field measurements and inverse modeling analyses
Major pathways of biogenic carbon (C) flow are resolved for the planktonic food web of the flaw lead polynya system of the Amundsen Gulf (southeast Beaufort Sea, Arctic Ocean) in spring-summer 2008.Expand