28 Works

Data from: Persistence at the final stage of volcanic island ontogeny: abiotic predictors explain native plant species richness on 111 remote Pacific atolls

Sebastien Larrue, Jean-François Butaud, Curtis C. Daehler, Stéphane Ballet, Julien Chadeyron & Roger Oyono
Aim: The final island ontogeny of the General Dynamic Model (GDM) (i.e. before island submergence) in tropical oceans corresponds to the coral atoll stage. Here, we examined whether the species richness of native vascular plants (indigenous and endemic species) on atolls is controlled by spatial and/or physical processes. We also predicted that atolls strongly affected by anthropogenic disturbance would have lower native species richness than predicted by spatial and physical processes. Location: Marshall Islands, Kiribati...

Entre Lacs et Tourbières : approche pluridisciplinaire de l’évolution des paysages et des zones humides de la Pénide à Espalem (Haute-Loire)

André-Marie Dendievel, Fabien Delrieu & Anne Duny
Dans le cadre d’un programme de recherche pluridisciplinaire, nos travaux visent à reconstituer l’évolution des paysages dans le massif du Cézallier durant la Protohistoire. Cet article présente les premiers résultats obtenus sur le plateau de la Pénide (Espalem, Haute-Loire) qui a la particularité d’accueillir d’anciens lacs, un site fortifié et une nécropole protohistorique. A partir de carottages dans la tourbière du « Lac Long » et de sondages archéologiques, nous avons mis en évidence les...

Supplementary Data - The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods

Christopher Smith, Charbonnier Sylvain, James Jenks, Kevin Bylund, Gilles Escarguel, Nicolas Olivier, Emmanuel Fara & Arnaud Brayard
We describe here the early Spathian (Early Triassic) Paris Biota decapod fauna from the western USA basin. This fauna contains two taxa of Aegeridae (Dendobranchiata), namely Anisaeger longirostrus n. sp. and Aeger sp. that are the oldest known representatives of their family, thus extending its temporal range by 5 Myr back into the Early Triassic. This fauna also includes two representatives of Glypheida (Pleocyemata) with Litogaster turnbullensis Schram, 1971 and Pemphix krumenackeri n. sp., comforting...

Dynamic magma mixing during the 2010 Eyjafjallajökull eruption, Iceland

Olgeir Sigmarsson

Data from: The relative importance of green infrastructure as refuge habitat for pollinators increases with local land-use intensity

Pengyao Li, David Kleijn, Isabelle Badenhausser, Carlos Zaragoza-Trello, Nicolas Gross, Ivo Raemakers & Jeroen Scheper
1. Agricultural expansion and intensification have resulted in strong declines in farmland biodiversity across Europe. In many intensively farmed landscapes, linear landscape elements such as field boundaries, road verges and ditch banks are the main remaining green infrastructures providing refuge for biodiversity, and as such play a pivotal role in agri-environmental policies aiming at mitigating biodiversity loss. Yet, while we have a fairly good understanding of how agricultural intensification influences biodiversity on farmland, little is...

In situ resistance, not immigration, supports invertebrate community resilience to drought intensification in a Neotropical ecosystem

Camille Bonhomme, Régis Céréghino, Jean-François Carrias, Arthur Compin, Bruno Corbara, Vincent E.J. Jassey, Joséphine Leflaive, Vinicius F. Farjalla, Nicholas A. C. Marino, Thibaut Rota, Diane S. Srivastava & Céline Leroy
While future climate scenarios predict declines in precipitations in many regions of the world, little is known of the mechanisms underlying community resilience to prolonged dry seasons, especially in “naïve” Neotropical rainforests. Predictions of community resilience to intensifying drought are complicated by the fact that the underlying mechanisms are mediated by species’ tolerance and resistance traits, as well as rescue through dispersal from source patches. We examined the contribution of in situ tolerance-resistance and immigration...

Adherence to opioid agonist therapy predicts uptake of direct-acting antivirals in people who use drugs: results from the French national healthcare database (the ANRS FANTASIO study)

Benjamin Rolland, Caroline Lions, Vincent Di Beo, Patrizia Carrieri, Nicolas Authier, Tangui Barré, Jessica Delorme, Philippe Mathurin, François Bailly, Camelia Protopopescu & Fabienne Marcellin
Abstract Background Opioid agonist therapy (OAT) is associated with reduced injection, reduced HCV transmission, and more opportunities to initiate hepatitis C virus (HCV) treatment in people who use drugs (PWUD). We aimed to study the extent to which adherence to OAT was predictive of increased uptake of direct-acting antivirals (DAA) in PWUD with chronic HCV infection. Methods Using the French national healthcare system database, we targeted PWUD (i.e. with a history of OAT) who had...

Data from: Insular woody daisies (Argyranthemum , Asteraceae) are more resistant to drought-induced hydraulic failure than their herbaceous relatives

Larissa C. Doria, Diego S. Podadera, Marcelino Del Arco, Thibaud Chauvin, Erik Smets, Sylvain Delzon & Frederic Lens
1. Insular woodiness refers to the evolutionary transition from herbaceousness towards derived woodiness on (sub)tropical islands, and leads to island floras that have a higher proportion of woody species compared to floras of nearby continents. 2. Several hypotheses have tried to explain insular woodiness since Darwin’s original observations, but experimental evidence why plants became woody on islands is scarce at best. 3. Here, we combine experimental measurements of hydraulic failure in stems (as a proxy...

In Vivo Imaging Auvergne (IVIA)

La plateforme IVIA réalise des prestations d'imagerie pour différentes équipes au niveau régional et national. Mots clés : In vivo, Imaging, nuclear imaging, optical imaging, MRI.

Data from: Evolution and epidemic spread of SARS-CoV-2 in Brazil

Darlan S. Candido, Ingra M. Claro, Jaqueline G. De Jesus, William M. Souza, Filipe R. R. Moreira, Simon Dellicour, Thomas A. Mellan, Louis Du Plessis, Rafael H. M. Pereira, Flavia C. S. Sales, Erika R. Manuli, Julien Thézé, Luiz Almeida, Mariane T. Menezes, Carolina M. Voloch, Marcilio J. Fumagalli, Thaís M. Coletti, Camila A. M. Da Silva, Mariana S. Ramundo, Mariene R. Amorim, Henrique H. Hoeltgebaum, Swapnil Mishra, Mandev S. Gill, Luiz M. Carvalho, Lewis F. Buss … & Nuno R. Faria
Brazil currently has one of the fastest growing SARS-CoV-2 epidemics in the world. Owing to limited available data, assessments of the impact of non-pharmaceutical interventions (NPIs) on virus spread remain challenging. Using a mobility-driven transmission model, we show that NPIs reduced the reproduction number from >3 to 1–1.6 in São Paulo and Rio de Janeiro. Sequencing of 427 new genomes and analysis of a geographically representative genomic dataset identified >100 international virus introductions in Brazil....

Effects of high and low-efficacy therapy in secondary progressive multiple sclerosis

Izanne Roos, Emmanuelle Leray, Romain Casey, Dana Horakova, Eva Havrdova, Guillermo Izquierdo, Sara Eichau, Francesco Patti, Gilles Edan, Marc Debouverie, Jean Pelletier, Serkan Ozakbas, Maria Pia Amato, Pierre Clavelou, Pierre Grammond, Cavit Boz, Katherine Buzzard, Olga Skibina, Jonathan Ciron, Oliver Gerlach, Francois Grand'Maison, Jeannette Lechner-Scott, Charles Malpas, Helmut Butzkueven, Sandra Vukusic … & Tomas Kalincik
Objective: To compare the clinical effectiveness of high- and low-efficacy treatments in patients with recently active and inactive secondary progressive multiple sclerosis (SPMS) after accounting for therapeutic lag. Methods: Patients treated with high- (natalizumab, alemtuzumab, mitoxantrone, ocrelizumab, rituximab, cladribine, fingolimod) or low-efficacy (interferon β, glatiramer acetate, teriflunomide) therapies after SPMS onset were selected from MSBase and OFSEP, two large observational cohorts. Therapeutic lag was estimated for each patient based on their demographic and clinical characteristics....

La vulnérabilité physique au changement climatique comparée des petites îles du Sud-Ouest de l’océan Indien

Goujon Michaël, Jean-François Hoarau & Olivier Santoni
The objective of this paper is to synthetically assess the vulnerability of small island economies (SIEs) to the consequences of climate change. We use a composite indicator of physical vulnerability to climate change (PVCCI), developed at Ferdi, which we apply to a large sample of 250 economies, including 100 sovereign or affiliated SIEs. Our results show that SEIs are structurally exposed to the consequences of climate change but in a heterogeneous way. An illustration of...

La végétation des sources thermominérales salées d’Auvergne

Guillaume Choisnet, Camille Roux, Stéphane Cordonnier, Vincent Hugonnot & Frédéric Bioret
Les auteurs réalisent une étude phytosociologique de la végétation des sources thermominérales salées d’Auvergne, en s’inscrivant dans une approche «braun-blanqueto-tüxenienne» de l’association. Malgré un grand nombre de relevés réalisés sur les sites salés d’Auvergne, les groupements restent méconnus et il semblait nécessaire d’en réaliser la synthèse pour en préciser le statut phytosociologique. Après une rapide présentation du contexte physiographique des localités étudiées et un bref rappel des travaux phytosociologiques antérieurs, les auteurs réalisent une analyse...

Densité de nids de Myrmica en tourbière : exemple de la tourbière de Jouvion (Puy-de-Dôme)

Luc Belenguier , Marine Kreder, Vincent Lombard, Mathilde Poussin & Christophe Galkovsky
Dans le cadre d’un travail visant à évaluer l’état de conservation des stations de Maculinea alcon alcon dans le Parc naturel régional des Volcans d’Auvergne, une étude a été menée en juillet 2015 pour évaluer la densité de nids de fourmis hôtes (Myrmica sp.) sur la tourbière de Jouvion. La méthode d’étude retenue comportait deux phases : un piégeage à l’aide de 249 appâts distribués au sein de grilles possédant des mailles de 16m² puis...

Feed and water intake

Sadjad Danesh Mesgaran, Björn Kuhla, David Humphries, Martin Weisbjerg, Peter Lund, Emer Kennedy, Michael O'Donovan, Michelle Liddane, Norann Galvin, Jan Dijkstra & René Baumont
Knowledge about dry matter intake (DMI) is a very important element in cattle management. Modern, high producing dairy cows require great amount of feed in order to meet the nutrient and energy requirements for maintenance and milk production, particularly during early lactation. In beef animals, current breeding strategies aim to select animals with low residual feed intake. Therefore, individual feed intake evaluation helps to identify the productivity and efficiency of each animal, in relation to...

Optical maps refine the bread wheat Triticum aestivum cv Chinese Spring genome assembly

Tingting Zhu, Le Wang, Hélène Rimbert, Juan Rodriguez, Karin Deal, Romain De Oliveira, Frédéric Choulet, Gabriel Keeble-Gagnère, Josquin Tibbits, Jane Rogers, Kellye Eversole, Rudi Appels, Yong Gu, Martin Mascher, Jan Dvorak, Ming-Cheng Luo, Juan C. Rodriguez, Karin R. Deal, Gabriel Keeble‐Gagnère, Yong Q. Gu & Ming‐Cheng Luo
This dataset contains a single whole-genome optical map file (.CMAP) for bread wheat (Triticum aestivum) cv Chinese Spring (CS). The methods for constructing this optical map and the properties of this map are described below. The definition of the CMAP format is documented in https://bionanogenomics.com/wp-content/uploads/2017/03/30039-CMAP-File-Format-Specification-Sheet.pdf. The extracted ultra-high-molecular weight DNA molecules of CS were labeled with the DLE-1 enzyme (Bionano Genomics, San Diego, CA, USA) and were then stained with the Bionano PrepTM DLS Kit...

Geographical variation in the trait-based assembly patterns of multitrophic invertebrate communities

Diane S. Srivastava, A. Andrew M. MacDonald, Valério D. Pillar, Pavel Kratina, Vanderlei J. Debastiani, Laura Melissa Guzman, M. Kurtis Trzcinski, Olivier Dézerald, Ignacio M. Barberis, Paula M. De Omena, Gustavo Q. Romero, Fabiola Ospina Bautista, Nicholas A. C. Marino, Céline Leroy, Vinicius F. Farjalla, Barbara A. Richardson, Ana Z. Gonçalves, Bruno Corbara, Jana S. Petermann, Michael J. Richardson, Michael C. Melnychuk, Merlijn Jocqué, Jacqueline T. Ngai, Stanislas Talaga, Gustavo C. O. Piccoli … & Régis Céréghino
It has been argued that the mechanisms structuring ecological communities may be more generalizable when based on traits than on species identities. If so, patterns in the assembly of community-level traits along environmental gradients should be similar in different places in the world. Alternatively, geographic change in the species pool and regional variation in climate might result in site-specific relationships between community traits and local environments. These competing hypotheses are particularly untested for animal communities....

Apprentissage et construction territoriale : une dynamique d’agencement ? : Le cas d’un territoire picard

Charles Lenay, Hugues Choplin, Frédéric Huet & Pergia Gkouskou-Giannakou
Comment penser la dynamique d’apprentissage d’un territoire sans la réduire soit à une agrégation d’apprentissages isolés d’acteurs soit à une capacité propre du territoire lui-même ? Le cadre théorique proposé repose sur le concept d’agencement, défini comme une mise en relation d’éléments hétérogènes : supports techniques, collectifs d’acteurs et espace-temps. Ce concept d’agencement permet d’appréhender une dynamique conjuguant, ou relevant d’un double compromis, entre ordre et désordre d’une part et entre apprentissage d’acteurs et construction...

Adherence to opioid agonist therapy predicts uptake of direct-acting antivirals in people who use drugs: results from the French national healthcare database (the ANRS FANTASIO study)

Benjamin Rolland, Caroline Lions, Vincent Di Beo, Patrizia Carrieri, Nicolas Authier, Tangui Barré, Jessica Delorme, Philippe Mathurin, François Bailly, Camelia Protopopescu & Fabienne Marcellin
Abstract Background Opioid agonist therapy (OAT) is associated with reduced injection, reduced HCV transmission, and more opportunities to initiate hepatitis C virus (HCV) treatment in people who use drugs (PWUD). We aimed to study the extent to which adherence to OAT was predictive of increased uptake of direct-acting antivirals (DAA) in PWUD with chronic HCV infection. Methods Using the French national healthcare system database, we targeted PWUD (i.e. with a history of OAT) who had...

Data from: Dental status of New Caledonian children: is there a need for a new oral health promotion programme?

Hélène Pichot, Martine Hennequin, Bernard Rouchon, Bruno Pereira & Stéphanie Tubert-Jeannin
Background: Before implementing a new oral health promotion program in the French overseas territory of Nouvelle Calédonie, the health authorities needed recent data about dental status of the New Caledonian child population. Objectives: This study aimed to describe the dental status of 6, 9 and 12-yr-old New Caledonian children and to investigate the environmental and behavioural risk factors related to oral health. Methods: A randomly selected sample of 2734 children (744 6-yr-olds, 789 9-yr-olds, and...

Data from: The effects of food web structure on ecosystem function exceeds those of precipitation

M. Kurtis Trzcinski, Diane S. Srivastava, Bruno Corbara, Olivier Dézerald, Céline Leroy, Jean-François Carrias, Alain Dejean & Régis Céréghino
Ecosystems are being stressed by climate change, but few studies have tested food web responses to changes in precipitation patterns and the consequences to ecosystem function. Fewer still have considered whether results from one geographic region can be applied to other regions, given the degree of community change over large biogeographic gradients. We assembled, in one field site, three types of macroinvertebrate communities within water-filled bromeliads. Two represented food webs containing both a fast filter...

À l’assaut des lois du genre : lecture de Poesía para niñas bien (2011) de Txus García

Lucie Lavergne
Étudier l’écriture poétique de Txus García sous l’angle des notions de « femmes » et de « conflits » invite à s’intéresser non seulement aux conflits dans lesquels s’engage une femme poète, au XXIe siècle, en Espagne, mais aussi à interroger la dimension conflictuelle du terme « femme », pour celle qui se définit, surtout, comme « lesbienne », « queer », ou même comme « animale » ! Incontestablement, par cette autodéfinition, la locutrice...

Simulation of sheared granular layers activated by fluid pressurization

Nho Gia Hien Nguyen, Luc Scholtès, Yves Guglielmi, Frédéric Victor Donzé, Zady Ouraga & Mountaka Souley
Fluid pressurization of critically stressed sheared zones can trigger slip mechanisms at play in many geological rupture processes, including earthquakes or landslides. The increasing fluid pressure reduces the effective stress, giving possibility to the shear zone to reactivate. Nonetheless, the mechanisms that dictate the mode of slip, from aseismic steady creep to seismic dynamic rupture, remain poorly understood. By using discrete element modeling, we simulate pore-pressure-step creep test experiments on a sheared granular layer under...

Une association bryophytique nouvelle, endémique du puy de Dôme (Puy-de-Dôme, Auvergne-Rhône-Alpes) : le Gymnomitrio corallioidis-Barbilophozietum sudeticae

Vincent Hugonnot
Le Gymnomitrio corallioidis-Barbilophozietum sudeticae est une association nouvelle considérée comme micro-endémique du sommet du puy de Dôme dans l’état actuel des connaissances. Cette association forme des colonies crustacées sur les affleurements de domite pulvérulente des versants nord et nord-ouest du cumulodôme, parmi des landes cryophiles. Elle est caractérisée par Gymnomitrion corallioides, G. concinnatum, Marsupella badensis et Barbilophozia sudetica. Cette association pionnière présente un caractère permanent. Elle était autrefois probablement plus répandue dans la chaîne des...

Contribution à la connaissance de l'étage subalpin dans le massif du Mont Aigoual (Gard, Lozère) : synthèse bibliographique, délimitation, caractérisation floristique et comparaison à l’échelle du Massif central.

Mario Klesczewski, Léa Pouget, Mathis Lecoq, Maxime Oudot, Mathieu Bossaert & Gautier Kelian
Après une synthèse bibliographique globale sur l'étage subalpin, notre travail dresse un inventaire inédit de la flore et la végétation sommitale du massif du Mont Aigoual (Gard, Lozère) : au cours de plusieurs années de prospections, un nombre important d’observations floristiques récentes ont été renseignées au sein d’une base de données. Ces données concernent l’ensemble des espèces végétales considérées comme typiques des habitats d’altitude du Massif central, notamment les hêtraies et les mosaïques de pelouses...

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