14 Works

Shift from short-term competition to facilitation with drought stress is due to a decrease in long-term facilitation

Ghassen Chaieb, Xiangtai Wang, Chedly Abdelly & Richard Michalet
Disentangling short- and long-term neighbour effects, using both removal and observational methods within a single experiment, has strongly improved our understanding of the driving mechanisms of plant-plant interactions. However, there has been no attempt to assess two important underlying processes of their changes along gradients, environmental-severity (changes in target performance without neighbours) and neighbour-traits (changes in performance with neighbours) effects, the former previously shown in alpine communities to be involved in competition and the latter...

Crop diversity benefits carabid and pollinator communities in landscapes with semi-natural habitats

Guillermo Aguilera Núñez, Tomas Roslin, Kirsten Miller, Giovanni Tamburini, Klaus Birkhofer, Berta Caballero-Lopez, Sandra Lindström, Erik Öckinger, , Adrien Rusch, Henrik Smith & Riccardo Bommarco
1. In agricultural landscapes, arthropods provide essential ecosystem services such as biological pest control and pollination. Intensified crop management practices and homogenization of landscapes have led to declines among such organisms. Semi-natural habitats, associated with high numbers of these organisms, are increasingly lost from agricultural landscapes but diversification by increasing crop diversity has been proposed as a way to reverse observed arthropod declines and thus restore ecosystem services. However, whether or not an increase in...

Data from: Entropic bonding of the type 1 pilus from experiment and simulation

Fabiano Corsetti, Alvaro Alonso-Caballero, Simon Poly, Raul Perez-Jimenez & Emilio Artacho
The type 1 pilus is a bacterial filament consisting of a long coiled proteic chain of subunits joined together by non-covalent bonding between complementing β-strands. Its strength and structural stability are critical for its anchoring function in uropathogenic Escherichia coli bacteria. The pulling and unravelling of the FimG subunit of the pilus was recently studied by atomic force microscopy (AFM) experiments and steered molecular dynamics (SMD) simulations [A. Alonso-Caballero et al., Nature Commun. 9, 2758...

How does increasing mast seeding frequency affect population dynamics of seed consumers? Wild boar as a case study

Laura Touzot, Eliane Schermer, Samuel Venner, Sylvain Delzon, Cyril Rousset, Eric Baubet, Jean-Michel Gaillard & Marlène Gamelon
Mast seeding in temperate oak populations shapes the dynamics of seed consumers and numerous communities. Mast seeding responds positively to warm spring temperatures and is therefore expected to increase under global warming. We investigated the potential effects of changes in oak mast seeding on wild boar population dynamics, a widespread and abundant consumer species. Using long-term monitoring data, we showed that abundant acorn production enhances the proportion of breeding females. With a body mass-structured population...

High-quality SNPs from genic regions highlight introgression patterns among European white oaks (Quercus petraea and Q. robur)

Tiange Lang, Pierre Abadie, Valerie Leger, Thibaut Decourcelle, Jean-Marc Frigerio, Christian Burban, Catherine Bodenes, Erwan Guichoux, Gregoire Le Provost, Cecile Robin, Naoki Tani, Patrick Leger, Camille Lepoittevin, Veronica El Mujtar, Francois Hubert, Josquin Tibbits, Jorge Paiva, Alain Franc, Frederic Raspail, Stephanie Mariette, Marie-Pierre Reviron, Christophe Plomion, Antoine Kremer, Marie-Laure Desprez-Loustau & Pauline Garnier-Géré
In the post-genomics era, non-model species like most Fagaceae still lack operational diversity resources for population genomics studies. Sanger sequences were produced from over 800 gene fragments covering ~530 kb across the genic partition of European oaks in a range-wide sampling of 25 individuals (11 Quercus petraea, 13 Q. robur, one Q. ilex as an outgroup). Regions targeted represented broad functional categories potentially involved in species ecological preferences, and a random set of genes. Using...

Data from: Theta oscillations coincide with sustained hyperpolarization in CA3 pyramidal cells, underlying decreased firing

Ashley Kees, Meryl Malezieux & Christophe Mulle
Brain-state fluctuations modulate membrane potential dynamics of neurons, influencing the functional repertoire of the network. Pyramidal cells (PCs) in hippocampal CA3 are necessary for rapid memory encoding, preferentially occurring during exploratory behavior in the high-arousal theta state. However, the relationship between the membrane potential dynamics of CA3 PCs and theta has not been explored. Here, we characterize the changes in the membrane potential of PCs in relation to theta using electrophysiological recordings in awake mice....

A regional assessment of changes in plant-plant interactions along topography gradients in Tunisian sebkhas

Ghassen Chaieb, Chedly Abdelly & Richard Michalet
Facilitation among plants in dry ecosystems is crucial for diversity and ecosystem functioning and stability. However, the importance of facilitation in extremely stressful conditions is highly debated. We attempt to separate the effects of direct non-resource and resource stress factors on plant-plant interactions by assessing changes in facilitation and competition along salinity gradients at two contrasting levels of aridity. We selected eight saline depressions (hereafter sebkhas) in the wet and dry Mediterranean arid climate of...

Data and R code for: An experimental approach to assessing the impact of ecosystem engineers on biodiversity and ecosystem functions

Gianalberto Losapio, Bernhard Schmid, Jordi Bascompte, Richard Michalet, Pierfilippo Cerretti, Christoph Germann, Jean-Paul Haenni, Rainer Neumeyer, Francisco Javier Ortiz-Sánchez, Adrian C Pont, Pascal Rousse, Jürg Schmid, Daniele Sommaggio & Christian Schöb
Plants acting as ecosystem engineers create habitats and facilitate biodiversity maintenance within plant communities. Furthermore, biodiversity research has demonstrated that plant diversity enhances the productivity and functioning of ecosystems. However, these two fields of research developed in parallel and independent from one another, with the consequence that little is known about the role of ecosystem engineers in the relationship between biodiversity and ecosystem functioning across trophic levels. Here, we present an experimental framework to study...

Contrasting responses of different functional groups stabilise community responses to a dominant shrub under global change

Yuxuan Bai, Richard Michalet, Weiwei She, Yangui Qiao, Liang Liu, Chun Miao, Shugao Qin & Yuqing Zhang
1. Changes in precipitation regimes and nitrogen deposition levels due to global change are altering terrestrial ecosystems worldwide. Most attempts at understanding how biotic interactions affect plant species and community responses to global change have focused on biotic interactions measured at the community-level. However, these approaches ignore that communities include functionally dissimilar species that might respond differently to changes in the effects of dominant neighbours along environmental gradients. We test the hypothesis that plant species...

Rainfall continentality, via the winter GAMS angle, provides a new dimension to biogeographical distributions in the Western United States

Richard Michalet, Philippe Choler, Ragan M. Callaway & Thomas G. Whitham
Aim: Drought stress, and its effects on the biogeography of vegetation, has focused primarily on water availability during the growing season, thus focusing primarly on summer. However, variation in rainfall continentality (i.e., the continental interior being insulated from oceanic influences) can produce striking vegetation differences. We aim to disentangle summer water balance from the influence of rainfall continentality on winter rainfall, to better understand how climate regulated the distributions of woody plants in the Western...

Data from: Candidate gene SNP variation in floodplain populations of pedunculate oak (Quercus robur L.) near the species' southern range margin: weak differentiation yet distinct associations with water availability

Martina Temunović, Pauline Garnier-Géré, Maja Morić, Jozo Franjić, Mladen Ivanković & Arndt Hampe
Populations residing near species' low-latitude range margins (LLM) often occur in warmer and drier environments than those in the core range. Thus, their genetic composition could be shaped by climatic drivers that differ from those occurring at higher latitudes, resulting in potentially adaptive variants of conservation value. Such variants could facilitate the adaptation of populations from other portions of the geographic range to similar future conditions anticipated under ongoing climate change. However, very few studies...

Cerebral small vessel disease MRI features do not improve the prediction of stroke outcome

Thomas Tourdias
Objective: To determine whether the total small vessel disease (SVD) score adds information to the prediction of stroke outcome compared to validated predictors, we tested different predictive models of outcome in stroke patients. Methods: White matter hyperintensity, lacunes, perivascular spaces, microbleeds, and atrophy were quantified in two prospective datasets of 428 and 197 first-ever stroke patients, using MRI collected 24-to-72 hours after stroke onset. Functional, cognitive, and psychological status were assessed at the 3–6 month...

Parasitism in ecosystem engineer species: a key factor controlling marine ecosystem functioning

Ludovic Pascal, Antoine Grémare, Xavier De Montaudouin, Bruno Deflandre, Alicia Romero-Ramirez & Olivier Maire
1. Although parasites represent a substantial part of marine communities’ biomass and diversity, their influence on ecosystem functioning, especially via the modification of host behaviour, remains largely unknown. Here, we explored the effects of the bopyrid ectoparasite Gyge branchialis on the engineering activities of the thalassinid crustacean Upogebia pusilla and the cascading effects on intertidal ecosystem processes (e.g. sediment bioturbation) and functions (e.g. nutrient regeneration). 2. Laboratory experiments revealed that the overall activity level of...

BIL&GIN sentence and rest asymmetries

Bernard Mazoyer, Nathalie Tzourio-Mazoyer, Loïc Labache, Marc Joliot & Fabrice Crivello
This dataset has been generated from a subsample of 287 participants (150 left-handers) from the BIL&GIN database (Mazoyer et al. Neuroimage 2016, 124:1225-1231). The dataset contains age, gender, self-reported handedness and Edinburgh score, for each participant, as well as its education level. It also includes measures of FMRI task-induced BOLD-signal variations and left minus asymmetry during sentence processing minus word list in 3 conditions: production, listening and reading. These variations are measured for the whole...

Registration Year

  • 2020
    14

Resource Types

  • Dataset
    14

Affiliations

  • University of Bordeaux
    14
  • Center of Biotechnogy of Borj Cédria
    2
  • University of Montana
    1
  • Stanford University
    1
  • Columbia University
    1
  • University of Zagreb
    1
  • University of Bologna
    1
  • Lund University
    1
  • Museum of Natural Sciences of Barcelona
    1
  • Newcastle University
    1