A5059285292- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Atmospheric and Environmental Gas Dynamics
- Agriculture Sustainability and Environmental Impact
- Plant Water Relations and Carbon Dynamics
- Wastewater Treatment and Nitrogen Removal
- Odor and Emission Control Technologies
- Ruminant Nutrition and Digestive Physiology
- Groundwater and Isotope Geochemistry
- Bioenergy crop production and management
- Microbial Community Ecology and Physiology
- Phosphorus and nutrient management
- Plant responses to elevated CO2
- Soil and Unsaturated Flow
- Agriculture, Soil, Plant Science
- Pasture and Agricultural Systems
- Isotope Analysis in Ecology
- Effects of Environmental Stressors on Livestock
- Anaerobic Digestion and Biogas Production
- Crop Yield and Soil Fertility
- Ecology and Vegetation Dynamics Studies
- Plant nutrient uptake and metabolism
- Environmental Impact and Sustainability
- Constructed Wetlands for Wastewater Treatment
Teagasc - The Irish Agriculture and Food Development Authority
2015-2024
Government of the United States of America
2022
Scotland's Rural College
2018
Government of Nepal
2018
University College Dublin
2018
Bangor University
2018
Agri Food and Biosciences Institute
2018
University of Edinburgh
2018
University of Cambridge
2003-2010
Trinity College Dublin
2007-2010
Abstract Bioenergy from crops is expected to make a considerable contribution climate change mitigation. However, bioenergy not necessarily carbon neutral because emissions of CO 2 , N O and CH 4 during crop production may reduce or completely counterbalance savings the substituted fossil fuels. These greenhouse gases ( GHG s) need be included into footprint calculation different under range soil conditions management practices. This review compiles existing knowledge on agronomic...
Abstract Denitrification is mediated by microbial, and physicochemical, processes leading to nitrogen loss via N 2 O emissions. Soil pH regulates the reduction of , however, it can also affect microbial community composition functional potential. Here we simultaneously test link between pH, composition, emission ratio (N O/(NO + )) in 13 temperate pasture soils. Physicochemical analysis, gas kinetics, 16S rRNA amplicon sequencing, metagenomic quantitative PCR (of denitrifier genes: nirS,...
Abstract The identification of agriculture and land use configurations that achieve net zero (NZ) greenhouse gas emissions is critical to inform appropriate food policy, yet national NZ targets lack consistent definitions. Here, 3000 randomised scenarios projecting future agricultural production compatible combinations in Ireland were screened using ten When aggregating carbon dioxide, methane, nitrous oxide various methods, 1–85% met criteria. Despite considerable variation, common actions...
Abstract The magnitude of fractionation during photorespiration and the effect on net photosynthetic 13C discrimination (Δ) were investigated for three Senecio species, S. squalidus, cineraria, greyii. We determined contributions different processes photosynthesis to Δ by comparing observations (Δobs) with predicted from gas-exchange measurements (Δpred). Photorespiration rates manipulated altering O2 partial pressure (pO2) in air surrounding leaves. Contributions 13C-depleted...
Abstract Fertilizer nitrogen (N) contributes to ammonia ( NH 3 ) emissions, which European Union member states have committed reduce. This study focused on evaluating ‐N loss from a suite of N fertilizers over multiple applications, and gained insights into the temporal seasonal patterns urea in Irish temperate grassland using wind tunnels. The evaluated were calcium ammonium nitrate CAN ), with stabilizers N‐( n ‐ butyl thiophosphoric triamide NBPT dicyandiamide DCD + maleic itaconic acid...
Abstract Soil plays a key role in the global carbon (C) cycle. Most current assessments of SOC stocks and guidelines given by Intergovernmental Panel on Climate Change (IPCC) focus top 30 cm soil. Our research shows that, when considering only total quantities, most are found this layer. However, not all forms equally valuable as long-term stable stores carbon: majority is available for mineralisation can potentially be re-emitted to atmosphere. associated with micro-aggregates silt plus...
Abstract Pasture-based livestock systems are often associated with losses of reactive forms nitrogen (N) to the environment. Research has focused on air and water due health, economic environmental impacts N. Di-nitrogen (N 2 ) emissions still poorly characterized, both in terms processes involved their magnitude, financial methodological constraints. Relatively few studies have quantifying N vivo fewer examined relative contribution different emission processes, particularly grazed...
Denitrification in pasture soils is mediated by microbial and physicochemical processes leading to nitrogen loss through the emission of N2O N2. It known that reduction N2 impaired low soil pH yet controversy remains as inconsistent use measurement methods researchers, differences analytical between studies, undermine direct comparison results. In addition, link denitrification emissions response carbon (C) mineralization different still not well described. We hypothesized potential rate...
The production of bovine slurry and its subsequent storage are significant sources ammonia (NH3) greenhouse gases (GHGs). Chemical acidification manures has been shown to significantly reduce these emissions. Waste products, derived from food processing on-farm practices, may be used as "natural" acidifiers. However, the efficacy products in reducing pH any emissions unknown. Commercial "slurry improvers" or "additives" also a viable mitigation option; however, their effectiveness is...
Feed management decisions are an important element of managing greenhouse gas (GHG) and nitrogen (N) emissions in livestock farming systems. This review aims to a) discuss the impact feed practices on beef dairy production systems b) assess different modelling approaches used for quantifying these abatement measures at stages manure chain. Statistical empirical models well-suited practical applications when evaluating mitigation strategies, such as GHG calculator tools farmers inventory...