ELFE, a database to determine greenhouse gases and ammonia emissions factors from livestock

ELFE, a database to determine greenhouse gases and ammonia emissions factors from livestock. 20. Nitrogen Workshop. Coupling C-N-P-S cycle

Water restriction in viviparous lizards causes transgenerational effects on behavioral anxiety and immediate effects on exploration behavior

International audienc

Development of a database to collect emission values for livestock systems

Growing demand for animal products has contributed to an increase in biogeochemical fluxes, leading particularly to gaseous ammonia, methane, and nitrous oxide emissions into the atmosphere. Developing accurate knowledge on the sources and magnitude of gas emissions from the livestock sector is essential to reducing emissions, while meeting other societal expectations, and to implementing effective regulations. To this end, a database called ELFE (ELevage et Facteurs d’Emission; i.e., Livestock and Emission Factors) was recently developed. It currently contains ?5200 gas emission measurements extracted from 345 publications of the international literature published from 1964 to 2018 from 37 countries. One of its innovative aspects is the structured and comprehensive description of both the livestock system and the measurement method associated with emission data. Ammonia emitted by livestock systems represents 40 to 80% of emission values and 45 to 81% of the values concern production systems with slurry, depending on the animal produced. This database will contribute to improved emission factors for national inventories by more thoroughly considering factors influencing emission levels and data quality. It highlights the need for shared and standardized reporting protocols for both the livestock system itself and the measurement conditions, to allow for thorough comparisons and to reduce uncertainty in unit conversions. The database is available online on the Institut national de la recherche agronomique (INRA) platform (https://data.inra.fr/dataset.xhtml?persistentId=doi:10.15454/MHJPYT) and will be updated annually with new gas emissions

La base de données ELFE : vers une meilleure connaissance des émissions gazeuses liées à l’élevage

National audienceThe increasing demand for animal products is a major challenge for the livestock sector that must reduce its environmental impacts and ensure its sustainability. This sector has been identified as an important contributor to polluting gas emissions. Improving the knowledge on the origin and the magnitude of air pollutants and greenhouse gases emissions from livestock sector is essential to address climate change and to contribute to improve air quality with the evolution of breeding practices (feeding strategy, manure management, etc.). A consortium involving research and extension services partners was created to build a database called ELFE (ELevages et Facteurs d’Emission) with international data from literature references focusing on emissions of ammonia, greenhouse gases, particles and odors on the different steps of manure management of cattle, pig and poultry productions systems and their associated key variables. Around 350 publications (among 1 000 publications collected) are integrated into the database and provide more than 5 200 emission values. The ELFE database allows calculating average of emission and their standard deviation taking into account the diversity of livestock systems. These data can be used to provide emission factor for national inventories for specific livestock systems and also, to evaluate practices on gas emissions mitigation. This database can also be used to analyze the influence of key variables on the emission factor variability using multicriteria assessment (climate, building type, etc.). Moreover, this database propose a classification of emission factor into three classes according to the degree on which information about their most influential key variables was complete (>50 % ; 30-50 % ; 50 % ; 30-50 % ; <30 % des métadonnées renseignées) afin d’évaluer son niveau de description

Les émissions d'ammoniac d'origine agricole dans l'atmosphère: État des connaissances et perspectives de réduction des émissions

National audienc

Les émissions d'ammoniac d'origine agricole dans l'atmosphère: État des connaissances et perspectives de réduction des émissions

National audienc

Elfe. Une base de données pour caractériser les émissions gazeuses

In France, 70% of ammonia and 18% of greenhouse gas (GHG) originate from the livestock sector. Thus, improving knowledge on the magnitude and origin of gaseous emissions is essential to reduce them, and then meet societal requirements and setup regulations at national and European levels. A consortium involving research (Inra, Irstea) and technical development (Ifip, Itavi, Idele, CRAB, Terres Innovia, Arvalis) was created to implement a robust database (ELFE) gathering (inter)national literature references on gaseous emissions of poultry, pork, herbivore productions and related indicators. With the help of the database ELFE, we aim to determine emission factors (EF) for NH3, GHG, particles and odors in various technical itineraries integrating the different steps of animal and manure management (i.e. building, manure storage and treatment, spreading and pasture). Building the structure of the database was the first step of this project financed by the French Agency of the Environment and the Control of Energy (ADEME). Further on, national and international literature data were integrated into the database. At the moment, around 1,000 publications are recorded, essentially focusing on NH3 and GHG emissions. The next steps concentrate on data analysis to determine average EF’s per itinerary and EF-variability due to metadata (i.e. animal type, climate, diet, duration, storage type...). Outcomes will be published in scientific journals but also made available for stakeholders as guidance documents (i.e. fact sheets, technical reports). The purpose of these documents is to advise agricultural consultants and authorities on ways of reducing emissions and improving air quality in livestock production systems

Une base de données pour caractériser les émissions gazeuses

Improving the knowledge on the magnitude and origin of gaseous emissions from livestock sector is essential toreduce emissions, to meet the societal requirement and to setup regulations at national and European levels. Aconsortium involving research (Inra, Irstea) and technical development (Ifip, Itavi, Idele, CRAB, Terres Innovia,Arvalis) was created to setup a robust database (ELFE) on (inter)national literature references on gaseousemissions of poultry, herbivore, pork productions and related indicators. With help of the database ELFE, weaim to determine emission factors (EF) for NH3, GHG, odors and particles per technical itinerary, in order tointegrate different steps of animal and manure management (i.e. building, manure storage and treatment,spreading and pastures) in the estimations of livestock emissions. Building the structure of the database was thefirst step of this project. Further on, national and international literature data has been integrated in the database.The next steps concentrate on data analysis to determine average EF’s per itinerary and EF-variability due tometadata (i.e. animal type, climate, diet, duration, storage type...). Outcomes will be published in scientificjournals but also made available for stakeholders as guidance document (i.e. fact sheets, technical reports).L’amélioration des connaissances relatives aux émissions d’ammoniac et de GES du secteur de l’élevage estindispensable afin de réduire son impact environnemental et ainsi répondre aux exigences sociétales etréglementaires au niveau national et Européen. Un consortium regroupant des acteurs de la recherche (Inra,Irstea) et du développement (Ifip, Itavi, Idele, CRAB, Terres Inovia, Arvalis) s’est créé pour mutualiser lesréférences relatives aux émissions gazeuses des élevages de volailles, d’herbivores et de porcs dans une base de données intitulée ELFE (ELevages et Facteurs d’Emission). Son objectif principal est de produire des facteursd’émissions (FE) NH3, GES, odeurs et particules par itinéraire technique en intégrant les différents postesd’émissions (bâtiment, stockage, traitement, épandage et pâturage). La première étape du projet a été d’établir lastructure de la base pour intégrer les données d’émissions publiées et les métadonnées associées pouvantexpliquer leur variabilité. La seconde étape est l’alimentation de cette base à partir des références disponiblesdans la littérature internationale. L’étape suivante concerne leurs analyses en vue de calculer des FE moyens paritinéraire technique, mais aussi d’étudier l’influence des métadonnées sur leurs variabilités. La diffusion desrésultats sera réalisée sous forme de publications scientifiques mais aussi sous forme d’un guide qui seralargement diffusé auprès des acteurs des filières animales

Elfe. Une base de données pour caractériser les émissions gazeuses

Elfe. Une base de données pour caractériser les émissions gazeuses. International Symposium on Emissions of Gas and Dust from Livestock (EmiLi