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Université de Neuchâtel

Fonctions multiples, contraintes multiples : les défis du nouveau paradigme de gestion des zones alluviales suisses

Nedelcu, Mihaela ; Hainard, François ; Guex, Dominique ; Gobat, Jean-Michel

In: Natures Sciences Sociétés, 2007, vol. 15, no. 1, p. 3-12

Floodplains are a complex environmental "object" which reveal the cultural, economic and ecological as well as safety stakes nowadays to be taken into account in river management. This paper is based on the results of a recent interdisciplinary research involving scientists in sociology, hydrology and soil ecology. Taking three case studies it examines the changes in the river management paradigm...

Université de Neuchâtel

Etude sur la purification des eaux de gravité passant à travers le sol forestier

Scherrer, Luc ; Gobat, Jean-Michel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2012.

French-Swiss silvicultural people wishes to know its impact on the quality of groundwater. The Interreg Alpeau project combines forest engineers, managers of water resources and scientists to measure this influence. The geographical distribution of the project shines around the Jura mountains between Chambéry (F) and Neuchâtel (CH). This study carried out on two sites of ground, Gibloux in...

Université de Neuchâtel

Factors modulating cottongrass seedling growth stimulation to enhanced nitrogen and carbon dioxide : compensatory tradeoffs in leaf dynamics and allocation to meet potassium-limited growth

Siegenthaler, Andy ; Buttler, Alexandre ; Grosvernier, Philippe ; Gobat, Jean-Michel ; Nilsson, Mats B. ; Mitchell Edward A. D.

In: Oecologia, 2013, vol. 171, no. 2, p. 557-570

Eriophorum vaginatum is a characteristic species of northern peatlands and a keystone plant for cutover bog restoration. Understanding the factors affecting E. vaginatum seedling establishment (i.e. growth dynamics and allocation) under global change has practical implications for the management of abandoned mined bogs and restoration of their C-sequestration function. We studied...

Université de Neuchâtel

Distribution des communautés lombriciennes et pédogénèse en forêts alluviales : étude le long de deux gradients écologiques

Salomé, Clémence ; Gobat, Jean-Michel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2012 ; 2260.

Soil is an essential compartment in ecosystem functioning. As a physical and chemical support, soils play a crucial role in recycling elements and supplying plant in their essential nutrients. These functions mainly take place in the organo-mineral layer, corresponding in most of the cases to the upper soil layer. This latter is composed of organo-mineral associations as a result of interactions...

Université de Neuchâtel

Etude de la succession secondaire dans le cadre de la pratique des cultures sur brûlis au Menabe central, Madagascar

Raharimalala, Hanitriaina Olga Jeannine ; Gobat, Jean-Michel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2011 ; 2239.

Madagascar forests are among the most biologically rich and unique ecosystems. Strong pressure from human activities causes, however, a rapid destruction of natural habitats and a massive loss of biodiversity. Slash and burn is one of the causes of this pressure. This is a traditional practice in many areas and predominantly in Madagascar, particularly in the South-West. Secondary vegetation that...

Bibliothèque du Musée et jardins botaniques cantonaux

Saxifrage bouc et veaux

Vittoz, Pascal ; Gobat, Jean-Michel

In: Bulletin du Cercle vaudois de botanique., 2006, vol. 35, p. 85-98

Université de Neuchâtel

Situation de la vigne sauvage Vitis vinifera ssp. silvestris en Europe

Arnold, Claire ; Gillet, François ; Gobat, Jean-Michel

In: Vitis, 1998, vol. 37, no. 4, p. 159-170

This paper summarizes the occurrence of the European wild vine - Vitis vinifera L. ssp. silvestris (Gmelin) Hegi – from bibliography and observations made in the framework of research on its ecology in the alluvial and colluvial forests of Europe. The state of the wild vine is disquieting within most of the European countries; in some countries we noticed a lack of recent reliable...

Université de Neuchâtel

Earthworm, mycorrhiza and root interactions: their effects on some chemical, physical and biological soil properties

Milleret, Roxane ; Le Bayon, Renée-Claire ; Tarnawski, Sonia ; Boivin, P. ; Gobat, Jean-Michel

In: Bulletin de la Société Suisse de Pédologie, 2010, vol. 30, p. 81-83

The belowground communities include a large variety of soil organisms showing highly complex interactions. Among the great diversity of soil biota, plant roots, earthworms, and arbuscular mycorrhizal fungi (AMF) that form a symbiosis with plant roots, are key components. However, only few studies tried to assess the individual or interactive effects of these soil organisms on soil properties and...