Search results for "Environmental studies"
showing 10 items of 323 documents
Vineyard soil mapping from very high spatial resolution images in hillslope context: a contribution of terroir knowledge.
2014
The Burgundian vineyard hillslopes (Côte-d’Or, France) exhibit a high diversity of soils resulting from the combination of several natural and anthropogenic factors acting at various spatio-temporal scales. The soil types have major role in viticulture, since they partly determine wine-growing quality. However, soil undergoes important degradation caused by hydric erosion and vineyard management practices. To control this soil heritage for a sustained viticulture in Côte-d’Or, a better knowledge of soil is necessary. The objectives of this work is to characterise vineyard soils and to identify the factors governing their diversity using an interdisciplinary approach crossing geology, geomor…
Discriminating impacts of geomorphological and human factors on vineyard soil erosion (Burgundy, France)
2014
International audience; The Burgundy vineyards have been recognized for the high diversity of Terroirs, controlled by complex interactions between natural features, historical parameters and soil management practices. Vineyards are known to undergo substantial soil loss in comparison with other types of agricultural land. Hydric erosion on vineyards is controlled by complex interactions of natural and anthropogenic factors leading to intra-plot spatial heterogeneities of topsoil at a scale of a metre. Studying the relationship between soils and their degradation is crucial in this situation where soil sustainability is threatened. This study explores the relative influences of historical an…
Guide de l'agriculture et de la forêt
2018
International audience
Personality predicts social dominance in female zebra finches, Taeniopygia guttata, in a feeding context.
2011
6 pages; International audience; Although personality has been defined as a suite of correlated behaviours, most studies of animal personality actually consider correlations between a few traits. We examined the repeatability and correlational structure of five potential personality traits (activity, neophobia, exploratory tendencies, risk-taking behaviour and obstinacy), in female zebra finches. In addition, we assessed to what extent personality influenced social dominance in a feeding context in this gregarious species. All personality traits were found to be highly repeatable within individuals. In addition, except for obstinacy, all of them were related to each other, thus defining a b…
The effects of experimentally manipulated yolk androgens on growth and immune function of male and female nestling collared flycatchers Ficedula albi…
2009
Hormone-mediated maternal effects may be an important mechanism for adjusting offspring phenotype to particular requirements of the environment. We manipulated the levels of testosterone and androstenedione in the yolk of collared flycatcher Ficedula albicollis eggs to investigate the effects of pre-natal exposure to androgens on growth and immune function. Androgen treatment tended to reduce the growth of males, and enhance the growth of females, as indicated by significant interaction between sex and androgen treatment. Cellular immune function was not affected by androgen treatment or sex. Survival of nestlings until fledging was not related to androgen treatment. Our results indicate th…
Quel statut pour les espaces de montagne durant l'âge du Bronze ? Regards croisés sur les approches société-environnement dans les Pyrénées occidenta…
2005
After having been neglected for some time, mountain environments have now become an important research area for the study of anthropogenic impact on the environment and the interactions of societies with their environments. The recent development of several interdisciplinary programs in the Alps and in the Pyrenees reveals the interest and the scientific questions associated with these domains. In the Pyrenees, the work undertaken in the Basque Country illustrates the utility of the development of multidisciplinary research on a large scale, which is both diachronic and has a high resolution chronology. Combining environmental and archaeological data, allows us to present an image of popula…
Rétro-observation des processus de décrue glaciaire à partir de peintures. Apports de la mono-photogrammétrie
2019
Alpine landscapes are indicators of climatic variations recognized through their geomorphological and glacial dynamics. Inthis field, the old documents (photographs, engravings, paintings…) constitute important data sources, used for the purposesof retro-observations. The classical methods consist, most often, to exploit them in descriptive works then being the subject ofnaturalistic cartographic retranscriptions. Today the contribution of innovative methods of treatment, such as mono-photogrammetry,offer new perspectives. It is thus possible to extract quantitative information from qualitative archives. This approachallows, in addition to a conventional landscape analysis, to project the i…
Vin, produits de la vigne et alimentation à Dijon à la fin du Moyen Âge
2019
International audience
Crecimiento inicial de Eugenia stipitata, Inga spectabilis e Inga edulis en Napo, Ecuador
2018
Agriculture has been one of the causes of deforestation, causing environmental impact and soil degeneration, which leads to lower income earned by farmers; hence the need to implement agroforestry systems .This research aims to describe fromthe initial growth of Eugenia stipitata, Inga edulis, and Inga spectabilis to 320 days after emergence. The study took place at the Amazon Research and Conservation Center of the Amazonas State University, during 2014 and 2015. The growth process was evaluated in regards to plant height, stem diameter, number of leaves, and branch length. Plant height and stem diameter were compared over time applying variance analysis. Precipitation was also compared to…
Du ciel noir à l'environnement nocturne : la construction d'un nouveau front de protection de la nature
2020
International audience; Depuis les années 1970 plusieurs domaines d’expertise scientifique ont contribué à faire émerger une nouvelle dimension de la protection de l’environnement liés aux effets dégradants de la pollution lumineuse. Cette dernière constitue en soi un objet de controverse entre sciences, notamment sur les différentes façons de la saisir et la définir en tant qu’objet et que fait. Nous retiendrons ici pour qualifier cette forme de pollution le caractère d’un excès de lumière artificielle entrainant des impacts sur les écosystèmes et sur la santé humaine.L’histoire du mouvement de lutte contre l’expansion de l’éclairage artificiel commence à être relativement connue, dans le …