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Université de Neuchâtel

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

Singer, David ; Mitchell, Edward A. D ; Payne, Richard J ; Blandenier, Quentin ; Duckert, Clément ; Fernández, Leonardo D ; Fournier, Bertrand ; Hernández, Cristián E ; Granath, Gustaf ; Rydin, Håkan ; Bragazza, Luca ; Koronatova, Natalia G ; Goia, Irina ; Harris, Lorna I ; Kajukało, Katarzyna ; Kosakyan, Anush ; Lamentowicz, Mariusz ; Kosykh, Natalia P ; Vellak, Kai ; Lara, Enrique

In: Molecular Ecology, 2019, vol. 28, no. 12, p. 3089-3100

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 diversification events in multicellular organisms have often been attributed to long‐term climatic and geological processes, but the impact of...

Université de Neuchâtel

Soil protistology rebooted : 30 fundamental questions to start with

Geisen, Stefan ; Mitchell, Edward A.D ; Wilkinson, David M ; Adl, Sina ; Bonkowski, Michael ; Brown, Matthew W ; Fiore-Donno, Anna Maria ; Heger, Thierry J ; Jassey, Vincent E.J ; Krashevska, Valentyna ; Lahr, Daniel J.G ; Marcisz, Katarzyna ; Mulot, Matthieu ; Payne, Richard ; Singer, David ; Anderson, Roger O ; Charman, Dan J ; Ekelund, Flemming ; Griffiths, Bryan S ; Rønn, Regin ; Smirnov, Alexey ; Bass, David ; Belbahri, Lassaâd ; Berney, Cédric ; Blandenier, Quentin ; Chatzinotas, Antonis ; Clarholm, Marianne ; Dunthorn, Micah ; Feest, Alan ; Fernández, Leonardo D ; Foissner, Wilhelm ; Fournier, Bertrand ; Gentekaki, Eleni ; Hájek, Michal ; Helder, Johannes ; Jousset, Alexandre ; Koller, Robert ; Kumar, Santosh ; La Terza, Antonietta ; Lamentowicz, Mariusz ; Mazei, Yuri ; Santos, Susana S ; Seppey, Christophe V.W ; Spiegel, Frederick W ; Walochnik, Julia ; Winding, Anne ; Lara, Enrique

In: Soil Biology & Biochemistry, 2017, vol. 111, no. 94-103, p. 2017

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 attention, especially compared to bacteria, fungi and nematodes in soil studies. Recent methodological advances, particularly in molecular biology...

Université de Neuchâtel

Patterns of earthworm, enchytraeid and nematode diversity and community structure in urban soils of different ages

Amossé, Joël ; Dózsa-Farkas, Klára ; Boros, Gergely ; Rochat, Guy ; Sandoz, Gauthier ; Fournier, Bertrand ; Mitchell, Edward A.D. ; Le Bayon, Renée-Claire

In: European Journal of Soil Biology, 2016, vol. 73, p. 46-58

Annelids (Lumbricidae and Enchytraeidae) and nematodes are common soil organisms and play important roles in organic matter decomposition, nutrient cycling and creation of soil structure and porosity. However, these three groups have rarely been studied together and only few studies exist for urban soils. We studied the diversity and community composition of annelids and nematodes in soils...

Université de Neuchâtel

Response of Sphagnum Peatland Testate Amoebae to a 1-Year Transplantation Experiment Along an Artificial Hydrological Gradient

Marcisz, Katarzyna ; Fournier, Bertrand ; Gilbert, Daniel ; Lamentowicz, Mariusz ; Mitchell, Edward A. D

In: Microbial Ecology, 2014, vol. 67, no. 4, p. 810-818

Peatland testate amoebae (TA) are well-established bioindicators for depth to water table (DWT), but effects of hydrological changes on TA communities have never been tested experimentally. We tested this in a field experiment by placing Sphagnum carpets (15 cm diameter) collected in hummock, lawn and pool microsites (origin) at three local conditions (dry, moist and wet)...

Université de Neuchâtel

Can soil testate amoebae be used for estimating the time since death? : A field experiment in a deciduous forest

Szelecz, Ildikò ; Fournier, Bertrand ; Seppey, Christophe ; Amendt, Jens ; Mitchell, Edward

In: Forensic Science International, 2014, vol. 236, p. 90-98

Estimation of the post-mortem interval (PMI, the time interval between death and recovery of a body) can be crucial in solving criminal cases. Today minimum PMI calculations rely mainly on medical and entomological evidence. However, beyond 4–6 weeks even entomological methods become less accurate. Thus additional tools are needed. Cadaveric fluids released by decomposing cadavers modify 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

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

Fournier, Bertrand ; Samaritani, Emanuela ; Shrestha, Juna ; Mitchell, Edward A.D. ; Le Bayon Renée-Claire

In: Applied Soil Ecology, 2012, vol. 59, p. 87-95

Little is known about the diversity and ecology of earthworms in floodplains, as well as their response to natural and anthropic perturbations (e.g. floods, river channelisation, floodplain restoration). We characterised the patterns of earthworm communities and species traits in the different habitats of a lowland restored floodplain in Switzerland. In addition to classical species-based...

Université de Neuchâtel

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

Fournier, Bertrand ; Malysheva, Elena ; Mazei, Yuri ; Moretti, Marco ; Mitchell, Edward A.D.

In: European Journal of Soil Biology, 2012, vol. 49, p. 85-91

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 more direct information on ecosystem characteristics than the species composition of a community. We tested the potential of testate amoeba...