Publications de Jean-Michel Gobat

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

Alexandre Buttler, Andy Siegenthaler, Edward Mitchell, Jean-Michel Gobat

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 p ...

Springer-Verlag2013

Quantifying Biomass Of Secondary Forest After Slash-And-Burn Cultivation In Central Menabe, Madagascar

Rodolphe Schlaepfer, Alexandre Buttler, Jean-Michel Gobat

RAHARIMALALA O, BUTTLER A, SCHLAEPFER R & GOBAT J-M. 2012. Quantifying biomass of secondary forest after slash-and-burn cultivation in Central Menabe, Madagascar. Biomass is the principal input of nutrients in slash-and-burn cultivation of tropical dry dec ...

Forest Research Inst Malaysia2012

Earthworm communities in alluvial forests: Influence of altitude, vegetation stages and soil parameters

Claire Guenat, Renée-Claire Le Bayon, Géraldine Michèle Bullinger, Jean-Michel Gobat

In many terrestrial ecosystems, soil parameters usually regulate the distribution of earthworm communities.In alluvial ecosystems, few studies have investigated the impact of periodic floods and alluvium deposition on soil fauna. In this context, we assume ...

Elsevier2011

Impact of flood deposits on earthworm communities in alder forests from a subalpine floodplain (Kandersteg, Switzerland)

Claire Guenat, Renée-Claire Le Bayon, Géraldine Michèle Bullinger, Jean-Michel Gobat

In many ecosystems, bioindication is a tool to estimate biodiversity and quality of environment. In soils,invertebrates are generally suitable bioindicators, especially earthworms. In floodplains, young alluvial soils are exposed to sedimentation and erosi ...

Elsevier2011

Litter- and ecosystem-driven decomposition under elevated CO2 and enhanced N deposition in a Sphagnum peatland

Alexandre Buttler, Andy Siegenthaler, Edward Mitchell, Luca Bragazza, Jean-Michel Gobat

Peatlands represent massive global C pools and sinks. Carbon accumulation depends on the ratio between net primary production and decomposition, both of which can change under projected increases of atmospheric CO2 and N deposition. The decomposition of li ...

Elsevier2010

Soil-vegetation patterns in secondary slash and burn successions in Central Menabe, Madagascar

Alexandre Buttler, Jean-Michel Gobat

Slash and burn agriculture is a traditional and predominant land use practice in Madagascar and its relevance in the context of forest preservation is significant. At the end of a cycle of culture, the fields become mostly weed covered and the soil fertili ...

2010

Influence of some physicochemical and biological parameters on soil structure in alluvial soils

Claire Guenat, Renée-Claire Le Bayon, Géraldine Michèle Bullinger, Jean-Michel Gobat

2007

Effect of cattle activities on gap colonisation in mountain pastures

Alexandre Buttler, François Gillet, Jean-Michel Gobat

Cattle influences gap dynamics in pastures in two ways: (1) by creating gaps and (2) by affecting the colonization process. This effect of cattle activity on gap revegetation can be subdivided in three main factors: herbage removal, trampling and dung and ...

2006

Spatial and seasonal patterns of cattle habitat use in a mountain wooded pasture

Alexandre Buttler, François Gillet, Jean-Michel Gobat

Management-oriented models of cattle habitat use often treat grazing pressure as a single variable summarizing all cattle activities. This paper addresses the following questions: How does the spatial pattern of cattle effects vary between cattle activitie ...

2006

Soil microbial community changes in wooded mountain pastures due to simulated effects of cattle grazing

Alexandre Buttler, François Gillet, Jean-Michel Gobat

The effect of cattle activity on pastures can be subdivided into three categories of disturbances: herbage removal, dunging and trampling. The objective of this study was to assess separately or in combination the effect of these factors on the potential a ...

2005