Results 81 to 90 of about 19,477 (187)

Ammonia in Fly Ashes from Flue Gas Denitrification Process and its Impact on the Properties of Cement Composites

Buildings, 2019
The paper presents the results of research on the properties of fly ashes from the process of flue gas denitrification by selective non-catalytic reduction (SNCR), consisting of dosing urea into the coal combustion chamber.
Agnieszka Michalik, Joanna Babińska, Filip Chyliński, Artur Piekarczuk   +3 more
doaj   +1 more source

The impact of short‐term flooding on soil microbial communities, soil nitrogen and maize productivity in clay loam soils of Ohio, United States

Annals of Applied Biology, EarlyView.
A short‐term flood, implemented in a field experiment with sprinkler irrigation in maize production systems, increased soil moisture levels and reduced autoclaved citrate extractable protein, an indicator of soil biological health that reflects organically bound soil nitrogen, and also corresponded to greater differential abundance of soil bacterial ...
Katherine Naasko, Tvisha Martin, Elena Zakolski, Meredith Mann, Antonino Malacrinò, Wanderson Novais, Alexander Lindsey, Christine Sprunger   +7 more
wiley   +1 more source

Seasonal variation in denitrification and dissimilatory nitrate reduction to ammonia process rates and corresponding key functional genes along an estuarine nitrate gradient

Frontiers in Microbiology, 2015
This research investigated spatial-temporal variation in benthic bacterial community structure, rates of denitrification and dissimilatory nitrate reduction to ammonium (DNRA) processes and abundances of corresponding genes and transcripts at three sites
Cindy J Smith, Cindy J Smith, Liang F Dong, John eWilson, Andrew eStott, Andrew Mark Osborn, Andrew Mark Osborn, Andrew Mark Osborn, David B Nedwell   +8 more
doaj   +1 more source

Stable Isotope Analysis as a Tool to Prevent Illicit Wildlife Trade of Songbirds in Brazil

Animal Conservation, EarlyView.
Feather isotopes provide clear differences between wild and captive songbirds in Brazil. Combining multiple isotopes improved classification accuracy and revealed individuals falsely declared as captive‐bred. These results demonstrate the potential of isotope analysis to detect wildlife laundering in the bird trade.
Luiza Brasileiro, Fábio J. V. Costa, Paulo R. R. Ramos, Vladimir E. Costa, Gabriela B. Nardoto   +4 more
wiley   +1 more source

What are the carbon services from cover‐crop adoption worth from farmers' perspective?

American Journal of Agricultural Economics, EarlyView.
Abstract We derive shadow prices of carbon services provided by cover crops relative to non‐cover‐crop agricultural practices, accounting for carbon sequestration and greenhouse gas (GHG) emissions. We model the agricultural technology by integrating crop production, carbon sequestration, and GHG emissions.
Saurav Raj Kunwar, Robert G. Chambers, Laura F. Gentry, Teresa Serra   +3 more
wiley   +1 more source

Optimal timing and rate of nitrogen fertilizer use: An integrated network technology approach

American Journal of Agricultural Economics, EarlyView.
Abstract Both the rate and timing of crop fertilizer application play an important role in agricultural productivity. However, inefficient fertilizer use can significantly increase production costs, water pollution, and greenhouse gas emissions. To capture both the spatial heterogeneity and dynamic nature of this problem, we develop a multi‐stage ...
Tihomir Ancev, Moriah Bostian
wiley   +1 more source

Diverse crop rotations offset yield-scaled nitrogen losses via denitrification

Communications Earth & Environment
Denitrification, a major source of gaseous nitrogen emissions from agricultural soils, is influenced by management. Practices promoting belowground diversity are suggested to support sustainable agriculture, but how they modulate nitrogen losses via ...
Aurélien Saghaï, Monique E. Smith, Giulia Vico, Samiran Banerjee, Anna Edlinger, Pablo García-Palacios, Gina Garland, Marcel G. A. van der Heijden, Chantal Herzog, Fernando T. Maestre, David S. Pescador, Laurent Philippot, Matthias C. Rillig, Sana Romdhane, Riccardo Bommarco, Sara Hallin   +15 more
doaj   +1 more source

Factors Controlling Sediment Denitrification Rates in Grassland and Forest Streams

Terrestrial, Atmospheric and Oceanic Sciences, 2014
Sediment denitrification is an important nitrate (NO3-) removal process from agricultural streams. The direct and indirect factors that control denitrification rates in tributary sediments can vary depending on the types of agricultural activities and ...
Haryun Kim
doaj   +1 more source

Wet Season Carbon (δ13C) and Nitrogen (δ15N) Composition of Modern Plants as Isotopic Framework for Agropastoral and Palaeoecological Studies in Northern Greece

Archaeometry, EarlyView.
ABSTRACT Mediterranean wetlands are one of Europe's most vital and endangered biodiversity hotspots. This study determined the carbon (δ13C) and nitrogen (δ15N) isotope values of modern plants to construct an isotopic framework by which to contextualize agropastoral management in and around past wetland ecosystems.
Doris Vidas‐Cardador, Amy Styring, Michael Charles, Valasia Isaakidou, Paul Halstead, Amy Bogaard   +5 more
wiley   +1 more source

Cold comfort for change: Stream mats as biological indicators of ecosystem processes in the McMurdo Dry Valleys, Antarctica

Journal of Phycology, EarlyView.
Abstract Glacier‐fed streams (GFSs) make ideal systems for studying climate‐related changes. Some of the best‐studied GFSs are found in the McMurdo Dry Valleys (MDVs) of Antarctica, one of the Earth's coldest and driest deserts. Despite their harsh and isolated nature, MDV GFSs represent an oasis of life in a landscape visually devoid of it, with ...
Tyler J. Kohler, Ian Hawes, Adrian Howkins, Lydia H. Zeglin, Mike N. Gooseff, Diane M. McKnight   +5 more
wiley   +1 more source