Search results for " grass"

Élaboration du plan de gestion de l’espace naturel sensible des versants de Vuillafans et Châteauvieux-les-Fossés

2014

The value of the “Espace Naturel Sensible des versants de Châteauvieux et Vuillafans” is based on a natural habitats mosaic that support an originality and a diversity of flora and entomological that we want to preserve. However, in dry grasslands which are habitats of the European community, we can see gradually the emergence of shrub and reforestation due to the difficult to mechanize hills and very fragmented private lands that favored the abandonment of agricultural practices on the slopes. To efficiently program the management of this area, a management plan, which is now a recognize tools for managers of natural areas, was written. To achieve the management plan objectives, the privat…

Dabiskie zālāji Vidzemes augstienes agroainavā: biodaudzveidība un tās saglabāšanas sociālekonomiskie aspekti

2015

Bakalaura darba „Dabiskie zālāji Vidzemes agroainavā: biodaudzveidība un tās saglabāšanas sociālekonomiskie aspekti” mērķis ir noskaidrot dabisko zālāju daudzveidību Vidzemes augstienē un tās saglabāšanas sociālekonomiskos faktorus. Visā Latvijas teritorijā dabisko zālāju platības samazinās, tomēr to saglabāšanai ir liela nozīme, jo dabiskajos zālājos ir ļoti augsta gan dzīvnieku, gan augu sugu daudzveidība. Dabiskie zālāji nespēj pastāvēt bez cilvēka klātbūtnes, tieši tāpēc ir svarīgi zināt iemeslus, kāpēc dabiskie zālāji tiek pamesti vai apsaimniekoti nepareizi. Dabisko zālāju biodaudzveidība Vidzemes augstienē samazinās, zemes īpašnieki novērtē dabas vērtību, bet, ņemot vērā šī brīža aps…

Functional ecology for evaluating and predicting the aptitude of permanent grassland to provide services

2013

National audience; Applying the principles of functional ecology helps better predict the services which can be provided by permanent grassland. Farming practices and environmental characteristics influence the functional composition of grassland. Functional plant types have a generic effect on forage services which can be assessed. 13 types of grassland composed of distinct functional types were defined based on 1,283 sample grassland fields located on 8 sites. This approach was validated by checking 8 Ellenberg indicator values (used to evaluate environmental characteristics and farming practices) against climatic data and descriptive data for farming practices. The interest of a function…

Etude de l'évolution de la pollution atmosphérique par le CO2 dans la ville de Cotonou utilisant la signature isotopique des graminées C4

2007

8 pages; International audience

Intérêt d'aménagements paysagers pour la biodiversité : exemple d'ingénierie agroécologique sur le domaine expérimental d'Epoisses (Inra Dijon)

2013

The biodiversity conservation is one of the major agricultural issues of the XXIst century. The intensification of agriculture and the redesign of the agricultural landscape (grouping of fields, …) lead to huge decreases or damages of semi-naturals habitats, known to promote biodiversity at the farm and the landscape scale, and now recognised as “topographic surface equivalence” in France.In the experimental site of Epoisses (INRA of Dijon), a study to design the landscape elements in favour of the biodiversity has been initiated. Improving the management of existing habitats (woods, hedges, ditches, sown grass margin strips), establishing hedges, flower strips, redesigning the field organi…

Effects of biomass, age and functional traits on regrowth of arable weeds after cutting

2008

Conference: 24th German Conference on Weed Biology and Weed ControlLocation: Stuttgart Hohenheim, GERMANYDate: MAR 04-06, 2008; International audience; In sown field margin stripes or pluriannual forage crops, arable weeds are exposed to high competition and regular mowing or hay cutting, to which they may react very differently. A greenhouse experiment permitted to understand some key factors shaping the ability of common arable weeds and forage crops to grow after such cuttings. Even without competition, cutting shoots at 5cm height reduced biomass production of all 10 species studied, but 6 annual broadleaf weeds were much more affected than 2 perennial forage crops (Dactylis, Medicago) …

State of plant diversity in permanent grassland under label of origin Epoisses cheese (Burgundy, France)

2013

(EA) équipe AgroSupEcolDur; International audience

Intra-row weed detection in wheat at early growing stage using imaging system

2017

AGROSUPSPEEAGESTAD; In the present agroecological context, the reduction of herbicide uses becomes a substantial issue. For weed control and site specific weed management the development of new technologies is required to identify individual plant. Although many crop/weed discrimination methods have been developed, the automatic intra-row weed detection is still a challenge, particularly in wheat. An imaging system is developed to detect black grass in wheat at early growing stage. The technique mimics the method used by a human expert in such conditions. Thus, the hypocotyl diameter was used as distinguishing criterion. For experiments, the seeds of black grass and wheat were sown in recta…

Place des prairies permanentes dans les élevages allaitants de Bourgogne, projet de recherche PSDR Bourgogne. Rapport final

2006

Microbial community dynamics induced by rewetting dry soil: summer precipitation matters

2015

The massive soil CO2 efflux associated with rewetting dry soils after the dry summer period significantly contributes to the annual carbon budget of Mediterranean grasslands. Rapid reactivation of soil heterotrophic activity and available carbon are both required to fuel the CO2 pulse. Better understanding of the effects of altered summer precipitation on the metabolic state of indigenous microorganisms may be important in predicting future changes in carbon cycling. We investigated the effects of a controlled rewetting event on the soil CO2 efflux pulse and on the present (DNA-based) and potentially active (rRNA-based) soil bacterial and fungal communities in intact soil cores previously s…