Search results for "agricultural"

Using uncertain preferential information from stakeholders to assess the acceptability of alternative forest management plans

2017

In forest management planning, participatory planning processes are often encouraged as a means to acquire relevant information and to enhance the stakeholders' acceptability of alternative plans. This requires the aggregation of the stakeholders' preferences that can be done in a wide variety of manners. The aggregation process strives to reduce the information into a single set of preferences that simplifies the information and allows for the use of discrete decision support tools. Depending on how the preferences are aggregated, a wide range of plan rankings can emerge. Although this range of ranking complicates the issue of plan selection, it does highlight the uncertainty involved in a…

Des souris et des vaches capables de percevoir des émotions humaines grâce aux odeurs

2021

Changes in the Structure of Agricultural Production in the European Union with Particular Emphasis on Poland and Latvia

2016

Many of phenomena, their growth or trend, are dependent on the interactions between neighboring areas. Model of shift-share analysis represent a growth rate (rate of change) of the different options phenomenon by taking into account the phenomenon of increase in the neighbouring area. The aim of the study is to analyze the changes in the commodity structure of agricultural production in the European Union according to the selected types of agricultural products using of shifts share analysis. The study assesses the rate of change the size of the phenomenon and identified and estimated the share of structural, sectoral and regional (local spatial) in the size of the effect of the global (agr…

Parasite avoidance behaviours in aquatic environments

2018

Parasites, including macroparasites, protists, fungi, bacteria and viruses, can impose a heavy burden upon host animals. However, hosts are not without defences. One aspect of host defence, behavioural avoidance, has been studied in the terrestrial realm for over 50 years, but was first reported from the aquatic environment approximately 20 years ago. Evidence has mounted on the importance of parasite avoidance behaviours and it is increasingly apparent that there are core similarities in the function and benefit of this defence mechanism between terrestrial and aquatic systems. However, there are also stark differences driven by the unique biotic and abiotic characteristics of terrestrial …

Collectes des données de pratiques agricoles des sites du Réseau de Mesures de la Qualité des Sols

2022

The INRAE InfoSol unit, mandated by the Gis Sol, coordinates the French Soil Monitoring Network (RMQS) set up to assess the quality and evolution of soils in France. A local trained team collects management data through a survey with farmers or operators for each site and campaign. The initial objective of collecting all soil-related management data, answering multidisciplinary uses, has faced collection difficulties and lengthy interviews. Hence, survey forms were revised before the second campaign, started in 2016. The new forms were tested and improved for two years, and the data collection strategy was tuned. In order to analyze the first responses and to suggest improvements, the study…

Mycorrhizae in crop production

2007

International audience; It has been a revelation that, strictly speaking, most plants do not have roots but rather mycorrhizae, a fact that has had tremendous consequences on the life of plants and the evolution of soil-plant systems. The research on arbuscular mycorrhizal (AM) symbioses has been intensive over the past forty years and we have learned a lot on the physiology, biology, ecology, and genetics of the symbiosis and the fungi involved in it. Most important, it appeared that cropping systems could be more sustainable with the management of AM fungi and reduced reliance on agrochemicals. The extraradical mycelia of AM fungi are an essential link between the plants, which are the co…

Breeding annual legumes for sustainable agricultures must target for new and more complex variety ideotypes

2013

International audience; Although yield and total biomass produced by annual legumes remain major objectives for breeders, environment-friendly, resource use efficient including symbiotic performance, resilient production in the context of climate change, adaptation to sustainable cropping systems (reducing leaching and glasshouse gas emissions), adaptation to diverse uses (seeds for feeds foods, non-food, forage or green manures), and finally new ecological services such as pollinator protection, imply the development of innovative genotypes, definition of new ideotypes and acceptance of their commercialisation. Taken as a whole, this means more complex and integrated objectives for breeder…

Évolutions récentes de l'agriculture française. Analyse géographique des tendances régionales et de la mise en place d'un nouveau dispositif d'aménag…

2005

The recent transformations in French agriculture and the emergence of the concept of sustainable development in the last decade have pushed politicians to defining new measures, of which most concern agriculture. The analysis of agricultural systems leads nowadays to studies on interactions with the physical, economical or social environment. The subject of this thesis is related to this context. Firstly, we propose to analyze the recent evolutions in French agriculture, particularly in the last mandate during which the most radical transformations occurred. It is of particular interest to identify, besides the general situation of French agriculture, the differences in evolution between th…

Wybrane problemy zrównoważonej intensyfikacji rolnictwa na przykładzie badań w województwie opolskim

2017

Celem opracowania jest identyfikacja problemów związanych z wdrażaniem w gospodarstwach rolnych województwa opolskiego strategii zrównoważonej intensyfikacji. Materiał pierwotny do badań zebrano w 2014 roku metodą wywiadu kwestionariuszowego w 100 celowo dobranych gospodarstwach rolnych o powierzchni powyżej 10 ha UR w subregionach reprezentatywnych dla rolnictwa regionu. Na podstawie badań stwierdzono, że rolnicy najczęściej wybierają trajektorię rozwojową, polegającą na powiększaniu areału posiadanej ziemi, przy jednoczesnym dostarczaniu dodatkowych usług środowiskowych. W opinii badanych rolników regulowana normami środowiskowymi intensyfikacja produkcji rodzi potrzebę ciągłego uczenia s…

Solving Conflicts among Conservation, Economic, and Social Objectives in Boreal Production Forest Landscapes: Fennoscandian Perspectives

2018

This chapter discusses challenges and possibilities involved in preserving biological diversity and the diversity of ecosystem services in the boreal zone and yet at the same time maintaining intensive timber extraction in boreal forests. Our focus is on Fennoscandian forests at the landscapes level, and we consider economic, social and ecological in the sustainability of forest management. We provide an outlook to boreal forest ecosystems and their history, and an overview of the forestry practices and policies that aim to ensure multi-functionality of Fennoscandian forests, i.e. diversity of efforts on sustaining biodiversity, timber production and other ecosystem services from forest lan…