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Université de Neuchâtel

Etude écosystémique des marais non boisés de la rive sud du lac de Neuchâtel (Suisse) : phytosociologie, pédologie, hydrodynamique et hydrochimie, production végétale, cycles biogéochimiques et influence du fauchage sur la végétation

Buttler, Alexandre ; Gobat, Jean-Michel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 1987.

Ecosystemic study of non-wooded marshes of the south shore of lake Neuchâtel (Switzerland). This ecosystemic study was carried out to get a better knowledge of the ecology of young marshes which were formed on the south shore of lake Neuchâtel when the Jura waterways were diverted. The objective of the research was to present arguments which could be used as guidelines for the organizations...

Université de Neuchâtel

Effects of endogeic earthworms on the soil organic matter dynamics and the soil structure in urban and alluvial soil materials

Amossé, Joël ; Turberg, Pascal ; Kohler-Milleret, Roxane ; Gobat, Jean-Michel ; Le Bayon, Renée-Claire

In: Geoderma, 2015, vol. 243-244, p. 50-57

Earthworms are considered as key actors of soil processes at different spatial and temporal scales and provide essential ecosystem services linked to climate regulation or primary production. However, little is known about their basic functional roles (e.g. organic matter decomposition, soil structuring processes) in perturbed systems such as urban or alluvial soils. Alluvial soils are...

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