Добірка наукової літератури з теми "Pâturages – Méditerranée (région)"
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Статті в журналах з теми "Pâturages – Méditerranée (région)":
Acherkouk, Mohamed, Abdesselam Maatougui, and Mohamed Aziz El Houmaiz. "Communautés végétales et faciès pastoraux dans la zone de Taourirt-Tafoughalt du Maroc oriental: écologie et inventaire floristique. Vegetation and pasturelands in Taourirt-Tafoughalt (Eastern Morocco): ecology and flora." Acta Botanica Malacitana 36 (December 1, 2011): 125–36. http://dx.doi.org/10.24310/abm.v36i1.2773.
Дисертації з теми "Pâturages – Méditerranée (région)":
Leouffre, Marie-Claude. "Effet du pâturage caprin sur la dynamique de production fourragère de taillis de chêne en région méditerranéenne française : éléments pour une gestion pastorale." Université Paul Cézanne (Aix-Marseille). Faculté des sciences et techniques de Saint-Jérôme, 1991. http://www.theses.fr/1991AIX30012.
Kawas, Mohyidine. "Influence de l'intensité du pâturage sur la végétation ligneuse dans deux régions méditerranéennes humides : comparaison d'une région du Sud de la France et d'une région du Nord-Ouest de la Syrie." Montpellier 2, 1987. http://www.theses.fr/1987MON20043.
Legrand, Catherine. "Régénération d'espèces arbustives méditerranéennes par rejets ou semis, après brûlage dirigé et pâturage : conséquences sur la dynamique d'embroussaillement." Aix-Marseille 3, 1992. http://www.theses.fr/1992AIX30048.
A study on the regeneration of Mediterranean shrubs after prescribed burning was undertaken by using an original non-destructive method. Erica species or kermes oak which can stock carbohydrates in their lignotuber or rhizome, recovered more rapidly than tap rooted Genista cinerea. Cistus species did not sprout after burning, but were capable of abundant seedling production, every fall and spring during more than two years. Nevertheless, seedlings badly resisted to summer drought and herb competence. Their bulk volume remained very low in relation to sprouting shrubs. Shrub encroachment was modelled to simulate management strategies combining grazing with techniques of fuel-break maintenance
Buisson, Elise. "Restauration écologique de communautés végétales herbacées méditerranéennes : exemples dans le sud-est de la France et sur la côte californienne (USA)." Aix-Marseille 3, 2005. http://www.theses.fr/2005AIX30071.
Disturbance and resilience maintain ecosystem dynamics. The first objective of this thesis was to assess the resilience of two plant communities after anthropogenic disturbances. Resilience was low, suggesting that the ecosystems were dysfunctional. The second objective was thus to isolate several functions of these degraded ecosystems to better understand their functioning. Perennial species were sown and transplanted to degraded ecosystems and functions manipulated. In both the Mediterranean regions studied, emergence of perennial species in the field was low. Transplanted seedlings established well if habitat was improved. In France, stone cover has to be restored, and grazing and arable plant competition decreased. In California, exotic plant competition has to be decreased drastically and topsoil removal is a good technique to reduce competition
Osorio, Barahona Rodomiro. "Conséquences biologiques des variations du climat, de l'intensité de la coupe mécanique et du pâturage sur deux espèces arbustives de la région aride du Chili." Montpellier 2, 1989. http://www.theses.fr/1989MON20089.
Coiffait-Gombault, Clémentine. "Règles d’assemblages et restauration écologique des communautés végétales herbacées méditerranéennes : le cas de la Plaine de La Crau (Bouches-du-Rhône, France)." Thesis, Avignon, 2011. http://www.theses.fr/2011AVIG0322/document.
Mediterranean herbaceous ecosystems which are characterized by a high biodiversity have been submitted to a lot of changes in use. Their conservation is not sufficient enough and ecological restoration seems to be an adapted solution to improve conservation efforts as it can mitigate damages induced by human activities. To develop restoration methods adapted to these ecosystems, preliminary researches on the different communities composing an ecosystem and the filters which are responsible for community assemblage before and after disturbance are necessary. Representative of numerous Mediterranean steppe ecosystems, the “Coussouls de Crau” and their ex-arable-fields (Bouches-du-Rhône, France) are the biological models used to identify and study the principal filters potentially responsible for organizing the plant communities. Sheep grazing, trophic changes, competition and reproduction and /or species dispersal, were identified in a first study on steppe regeneration; these filters were then the core of the following three research experiments. We carried out two in-situ restoration protocols (hay transfer and sowing foundation species) and one ex-situ experiment testing interactions between a selection of steppe species. The main results show that reproduction, seed dispersal, soil trophic level, competition, extensive sheep grazing are filters which have a determinant role in structuring the communities, in determining plant composition and partly in explaining the slow dynamics towards the reference steppe. Also, we show that filters interact between them. For applied restoration, the tested methods promote steppe vegetation come back, but in the short term (two or three years after restoration), the composition of restored areas remains different to the reference ecosystem. Even if we understand better the different factors which explain community organization, these results demonstrate that it is difficult to restore it integrally because it is not easy to manipulate and find an equilibrium between the different filters actions. Now it is necessary to continue these fundamental and applied researches, in particular on the maturation and structure of the old herbaceous plant communities