Université de Neuchâtel

Highways and subways : a story of fungi and bacteria in soils

Simon, Anaële ; Junier, Pilar (Dir.) ; Verrecchia, Eric P. (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2016.

Traditionally, bacteriologists and mycologists have conducted study of their respective fields separately, despite of the fact that bacteria and fungi co-exist in almost every type of ecosystem. Amongst the numerous types of interactions possibly occurring between fungi and bacteria, this thesis focuses on fungal highways, a mechanism by which bacteria disperse along fungal hyphae. We...

Université de Neuchâtel

Gas supersaturation, 222Rn and CO2 as tracers in karst water

Babić, Domagoj ; Zwahlen, François (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2014.

Karst aquifers are among the most important water resources world-wide. Nevertheless, due to their intrinsic properties consisting in fast transport processes and reduced contaminant attenuation capacity, they are proved to be highly vulnerable. Consequently, it is important to discriminate between water originating from the soil reservoir, the epikarst, the low permeability volume and the...

Université de Neuchâtel

Above- and below-ground aspects of floodplain restoration : from biodiversity to ecosystem functions

Fournier, Bertrand ; Mitchell, Edward (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2013.

Biodiversity sustains ecosytem functioning and services to human societies. However, the diversity of certain taxa including many soil organisms remains poorly known and the processes creating, sustaining, and destroying biodiversity are only partially understood. As a result, restoring diversity in disturbed ecosystem remains a challenging task. Floodplains cristallize these issues. They...

Université de Neuchâtel

Rhizosphere bacterial communities associated with Lolium perenne : structuration and plant-mediated influences

Jossi, Maryline ; Aragno, Michel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th.2024.

Due to their presence, activity and physiology, plant roots influence physically, chemically and biologically their surrounding soil. Some microorganisms will be favoured, or on the contrary inhibited by roots. As the junction between soil and plant, the rhizosphere presents an intense activity because of the stimulation of microflora by rhizodeposition and of the existence of various...

EPFL

Interaction sol-structure dans le domaine des tranchées couvertes

Plumey, Sylvain ; Muttoni, Aurelio (Dir.) ; Vulliet, Laurent (Dir.)

Thèse sciences Ecole polytechnique fédérale de Lausanne EPFL : 2007 ; no 3714.

Université de Neuchâtel

Cadmium anomalies in Jurassic carbonates (Bajocian, Oxfordian) in western and southern Europe

Rambeau, Claire ; Föllmi, Karl B. (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2006 ; 1858.

The trace metal cadmium (Cd) is a highly toxic element, with adverse effects both on human health as well as on ecosystem equilibriums. Its transfer into the environment occurs by the mediation of natural and anthropogenic processes. Important natural sources comprise volcanic emissions and the biogeochemical weathering of Cd-enriched rocks, such as phosphorites or organic-rich deposits. This...