Publications de Bertrand Fournier

Dispersal limitations and historical factors determine the biogeography of specialized terrestrial protists

Enrique Lara, Edward Mitchell, Bertrand Fournier, Luca Bragazza, Mariusz Lamentowicz

Recent studies show that soil eukaryotic diversity is immense and dominated by micro-organisms. However, it is unclear to what extent the processes that shape the distribution of diversity in plants and animals also apply to micro-organisms. Major diversif ...

WILEY2019

Contrasting processes drive alpha and beta taxonomic, functional and phylogenetic diversity of orthopteran communities in grasslands

François Gillet, Bertrand Fournier

Taxonomic, functional and phylogenetic diversities can respond differently to biotic and abiotic filters. However, biodiversity management tends to focus on a single index, generally taxonomic diversity, assuming a strong positive correlation among biodive ...

Elsevier Science Bv2017

Soil protistology rebooted: 30 fundamental questions to start with

Enrique Lara, Alexandre Jousset, Edward Mitchell, Thierry Jean Heger, Bertrand Fournier, Mariusz Lamentowicz, Santosh Kumar, Vincent Eric Jules Jassey

Protists are the most diverse eukaryotes. These microbes are keystone organisms of soil ecosystems and regulate essential processes of soil fertility such as nutrient cycling and plant growth. Despite this, protists have received little scientific attentio ...

Pergamon-Elsevier Science Ltd2017

Multiple Assembly Rules Drive the Co-occurrence of Orthopteran and Plant Species in Grasslands: Combining Network, Functional and Phylogenetic Approaches

François Gillet, Bertrand Fournier

Understanding the factors underlying the co-occurrence of multiple species remains a challenge in ecology. Biotic interactions, environmental filtering and neutral processes are among the main mechanisms evoked to explain species co-occurrence. However, th ...

Frontiers Media Sa2016

An unexpected role for mixotrophs in the response of peatland carbon cycling to climate warming

Alexandre Buttler, Enrique Lara, Edward Mitchell, Bertrand Fournier, Luca Bragazza, Robert Thomas Edmund Mills, Constant Signarbieux, Vincent Eric Jules Jassey, Bjorn Jozef Maria Robroek

Mixotrophic protists are increasingly recognized for their significant contribution to carbon (C) cycling. As phototrophs they contribute to photosynthetic C fixation, whilst as predators of decomposers, they indirectly influence organic matter decompositi ...

Nature Publishing Group2015

Functional traits as a new approach for interpreting testate amoeba palaeo-records in peatlands and assessing the causes and consequences of past changes in species composition

Enrique Lara, Edward Mitchell, Bertrand Fournier, Vincent Eric Jules Jassey

Subfossil remains of various groups of organisms preserved in peat and sediment archives are commonly used to infer past environmental changes using transfer functions based on species composition. However, the changes in community structure can also be ex ...

Sage Publications Ltd2015

Spatio-temporal heterogeneity of riparian soil morphology in a restored floodplain

Claire Guenat, Edward Mitchell, Bertrand Fournier, Géraldine Michèle Bullinger

Floodplains have been intensively altered in industrialized countries, but are now increasingly being restored. It is therefore important to assess the effect of these restoration projects on the aquatic and terrestrial components of ecosystems. However, d ...

European Geosciences Union2013

Patterns of earthworm communities and species traits in relation to the perturbation gradient of a restored floodplain

Renée-Claire Le Bayon, Edward Mitchell, Bertrand Fournier

Little is known about the diversity and ecology of earthworms in flocdplains, as well as their response to natural and anthropic perturbations (e.g. floods, river channelisation, floodplain restoration). We characterised the patterns of earthworm communiti ...

Elsevier Science Bv2012

Toward the use of testate amoeba functional traits as indicator of floodplain restoration success

Edward Mitchell, Bertrand Fournier

Functional traits (FT) offer a new framework to understand the ecology of organisms and overcome taxonomic difficulties that currently limit the study of minute soil taxa. FT are likely to be selected by environmental filters and hence they may provide mor ...

2012

Heterogeneity of soil carbon pools and fluxes in a channelized and a restored floodplain section (Thur River, Switzerland)

Claire Guenat, François Gillet, Edward Mitchell, Bertrand Fournier

Due to their spatial complexity and dynamic nature, floodplains provide a wide range of ecosystem functions. However, because of flow regulation, many riverine floodplains have lost their characteristic heterogeneity. Restoration of floodplain habitats and ...

2011

Review on the EFDA work programme on nano-structured ODS RAF steels

Nadine Baluc, Zbigniew Oksiuta, Bertrand Fournier

The 2008-2009 work programme of the European research project on nano-structured oxide dispersion strengthened (ODS) reduced activation ferritic (RAF) steels is being organized along the four following programmatic lines: (1) improve the present generation ...

Elsevier2011

Heterogeneity of soil carbon pools and fluxes in a channelized and a restored floodplain section (Thur River, Switzerland)

Claire Guenat, François Gillet, Edward Mitchell, Bertrand Fournier

Copernicus Publications2011