23 Works

Data from: Geographies of an online social network

Balázs Lengyel, Attila Varga, Bence Ságvári, Ákos Jakobi & János Kertész
How is online social media activity structured in the geographical space? Recent studies have shown that in spite of earlier visions about the “death of distance”, physical proximity is still a major factor in social tie formation and maintenance in virtual social networks. Yet, it is unclear, what are the characteristics of the distance dependence in online social networks. In order to explore this issue the complete network of the former major Hungarian online social...

Data from: Both trait-neutrality and filtering effects are validated by the vegetation patterns detected in the functional recovery of sand grasslands

Péter Török, Gábor Matus, Edina Tóth, Mária Papp, András Kelemen, Judit Sonkoly & Béla Tóthmérész
Neutral theory of species assembly means that species assembly is governed by stochastic dispersal processes and fluctuations in established populations. An alternative theory suggests that assembly is strongly determined by functional trait filtering governed by abiotic and biotic filtering selecting species from the local species pool. To test these assumptions, in the current paper we analysed vegetation changes in the first 12 years of succession after heavy goose grazing on acidic sand. With trait-based analyses...

Data from: Do large-seeded herbs have a small range size? The seed mass-distribution range trade-off hypothesis

Judit Sonkoly, Balázs Deák, Orsolya Valkó, Attila Molnár V., Béla Tóthmérész & Péter Török
We aimed to introduce and test the “seed mass–distribution range trade-off” hypothesis, that is, that range size is negatively related to seed mass due to the generally better dispersal ability of smaller seeds. Studying the effects of environmental factors on the seed mass and range size of species, we also aimed to identify habitats where species may be at risk and need extra conservation effort to avoid local extinctions. We collected data for seed mass,...

Data from: The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agro-ecosystem services across Europe

Emily A. Martin, Matteo Dainese, Yann Clough, András Báldi, Riccardo Bommarco, Vesna Gagic, Michael Garratt, Andrea Holzschuh, David Kleijn, Anikó Kovács-Hostyánszki, Lorenzo Marini, Simon G. Potts, Henrik G. Smith, Diab Al Hassan, Matthias Albrecht, Georg K. S. Andersson, Josep Asis, Stephanie Aviron, Mario Balzan, Laura Baños-Picón, Ignasi Bartomeus, Peter Batary, Françoise Burel, Berta Caballero-López, Elena D. Concepcion … & Ingolf Steffan-Dewenter
Managing agricultural landscapes to support biodiversity and ecosystem services is a key aim of a sustainable agriculture. However, how the spatial arrangement of crop fields and other habitats in landscapes impacts arthropods and their functions is poorly known. Synthesising data from 49 studies (1515 landscapes) across Europe, we examined effects of landscape composition (% habitats) and configuration (edge density) on arthropods in fields and their margins, pest control, pollination and yields. Configuration effects interacted with...

Data from: International collaboration and spatial dynamics of US patenting in Central and Eastern Europe 1981-2010

Mariann Leskó & Balázs Lengyel
How did post-socialist transition and a parallel shift in international labor division restructure regional innovation systems in Central and Eastern Europe? This question is increasingly important, because current EU innovation policy is combined with regional development in Smart Specialization Strategies; however, spatial trends of innovation in Central and Eastern Europe are not fully understood which might lead to less than perfectly efficient policy. In this paper we describe the spatial dynamics of inventor activity in...

Collision between biological process and statistical analysis revealed by mean-centering

David Westneat, Yimen Araya-Ajoy, Hassen Allegue, Barbara Class, Niels Dingemanse, Ned Dochtermann, Laszlo Garamszegi, Julien Martin, Shinichi Nakagawa, Denis Reale & Holger Schielzeth
1. Animal ecologists often collect hierarchically-structured data and analyze these with linear mixed-effects models. Specific complications arise when the effect sizes of covariates vary on multiple levels (e.g., within vs among subjects). Mean-centering of covariates within subjects offers a useful approach in such situations, but is not without problems. 2. A statistical model represents a hypothesis about the underlying biological process. Mean-centering within clusters assumes that the lower level responses (e.g. within subjects) depend on...

Source data for: Presynaptic NMDARs cooperate with local spikes toward GABA release from the reciprocal olfactory bulb granule cell spine

Veronica Egger, Vanessa Lage-Rupprecht, Li Zhou, Gaia Bianchini, S. Sara Aghvami, Balazs Rozsa, Marco Sassoe-Pognetto & Max Mueller
In the rodent olfactory bulb the smooth dendrites of the principal glutamatergic mitral cells (MCs) form reciprocal dendrodendritic synapses with large spines on GABAergic granule cells (GC), where unitary release of glutamate can trigger postsynaptic local activation of voltage-gated Na+-channels (Navs), i.e. a spine spike. Can such single MC input evoke reciprocal release? We find that unitary-like activation via two-photon uncaging of glutamate causes GC spines to release GABA both synchronously and asynchronously onto MC...

Data from: Revisiting the measurement of anomie

Ali Teymoori, Jolanda Jetten, Brock Bastian, Amarina Ariyanto, Frédérique Autin, Nadia Ayub, Constantina Badea, Tomasz Besta, Fabrizio Butera, Rui Costa-Lopes, Lijuan Cui, Carole Fantini, Gillian Finchilesc, Lowell Gaertner, Mario Gollwitzer, Ángel Gómez, Roberto González, Ying Yi Hong, Dorthe Høj Jensen, Minoru Karasawa, Thomas Kessler, Olivier Klein, Marcus Lima, Tuuli Anna Mähönen, Laura Megevand … & Gillian Finchilescu
Sociologists coined the term "anomie" to describe societies that are characterized by disintegration and deregulation. Extending beyond conceptualizations of anomie that conflate the measurements of anomie as 'a state of society' and as a 'state of mind', we disentangle these conceptualizations and develop an analysis and measure of this phenomenon focusing on anomie as a perception of the 'state of society'. We propose that anomie encompasses two dimensions: a perceived breakdown in social fabric (i.e.,...

Data from: Multivariate ratio analysis reveals Trigonoderus pedicellaris Thomson (Hymenoptera, Chalcidoidea, Pteromalidae) as a valid species

Zoltán László, Hannes Baur & Béla Tóthmérész
We demonstrate by multivariate ratio analysis (MRA) the validity of two female colour morphs as separate species in what was previously regarded as a single species, Trigonoderus cyanescens (Förster, 1841) (Hymenoptera: Pteromalidae). As a result, T. pedicellaris Thomson, 1878 stat.r., is resurrected from synonymy under T. cyanescens and T. filatus binubilatus Erdős, 1960 syn.n. is synonymized with T. cyanescens. More than 20 characters were measured as part of two MRA dataset analyses. The first analysis...

Data from: Optimized flocking of autonomous drones in confined environments

Gábor Vásárhelyi, Csaba Virágh, Gergő Somorjai, Tamás Nepusz, Agoston E. Eiben & Tamás Vicsek
We address a fundamental issue of collective motion of aerial robots: how to ensure that large flocks of autonomous drones seamlessly navigate in confined spaces. The numerous existing flocking models are rarely tested on actual hardware because they typically neglect some crucial aspects of multirobot systems. Constrained motion and communication capabilities, delays, perturbations, or the presence of barriers should be modeled and treated explicitly because they have large effects on collective behavior during the cooperation...

Data from: A new multistage dynamic model for biological control exemplified by the host–parasitoid system Spodoptera exigua–Chelonus oculator

József Garay, Zoltán Sebestyén, Zoltán Varga, Manuel Gámez, Alejandro Torres, José E. Belda & Tomás Cabello
Over the last few decades, important advances have been made in our understanding of host-parasitoid relations and their applications to biological pest control. Not only has the number of agent species increased, but new manipulation techniques for natural enemies have also been empirically introduced, particularly in greenhouse crops. This makes biocontrol more complex, requiring a new mathematical modelling approach appropriate for the optimization of the release of agents. We developed a temperature- and stage-dependent dynamic...

Uncertainties in internal dose assessment: Lifetime dose assessment for three example workers occupationally exposed to uranium - Analysing the intercomparison results

Estelle Davesne, Richard Bull, Jeri Anderson, Derek Bingham, Alan Birchall, Carlo Maria Castellani, Cécile Challeton-de Vathaire, M. L. Fernandez, Martina Froning, A. Giomi, Anne Laure Lebacq, Jakub Ośko, Inés Gomez Parada, Anna Pántya, A. G. Rojas, Ana Rojo, Masa Takahashi, Kotaro Tani & Eric Blanchardon
Abstract: Recently, several epidemiological studies were interested in identifying potential health effects of incorporated radionuclides. To achieve this work, exposure of individuals was quantified in order to be compared with health status. In order to quantify the exposure of workers, the measurement of retained or excreted activity also called bioassay, must be interpreted in terms of dose. The data available for dose reconstruction are mostly bioassay analyses (mostly urine) carried out to verify the absence...

InterComparison on Internal DOSE Assessment – ICIDOSE 2017 Analysing the intercomparison results

Carlo Maria Castellani, Andor Andrasi, Augusto Giussani, Tamas Pázmándi, Gareth Roberts & George Etherington
Abstract: Internal dose assessment often requires complex processes and judgements. “Technical Recommendations for Monitoring Individuals for Occupational Intakes of Radionuclides” (TECHREC) was developed during 2014 to 2016 as a tool for internal dosimetrists. The TECHREC recommendations have been publishedin the Radiation Protection document series of the European Commission as document RP188 (EC 2018). They aim to encourage harmonisation, to present a complete account of the principles of individual monitoring and internal dosimetry, and to provide...

Die Ungarische Spracherneuerung. Einleitung in ein Forschungsprojekt

Daniela Haarmann
About 1800 in the context of the upcoming national scholarliness language movements arose all over Europe. Their intention was the standardisation as the establishment of the own native language as a language of science and literature. One of them was Hungarian Language Renewal (Magyar Nyelvújítás). This article provides an overview of this specific language renewal in first sections: The first introduces the general European as the specific Hungarian background of this movement. Then, the political,...

Data from: Size matters for lice on birds: coevolutionary allometry of host and parasite body size

Andrea Harnos, Zsolt Lang, Dóra Petrás, Sarah E. Bush, Krisztián Szabó & Lajos Rozsa
Body size is one of the most fundamental characteristics of all organisms. It influences physiology, morphology, behavior, and even interspecific interactions such as those between parasites and their hosts. Host body size influences the magnitude and variability of parasite size according to Harrison's Rule (HR: positive relationship between host and parasite body sizes) and Poulin’s Increasing Variance Hypothesis (PIVH: positive relationship between host body size and the variability of parasite body size). We analyzed parasite-host...

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

Joël Amossé, Klára Dózsa-Farkas, Gergely Boros, Guy Rochat, Gauthier Sandoz, Bertrand Fournier, Edward A.D. Mitchell & Renée-Claire Le Bayon
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 spanning more than two centuries of urban soil development in Neuchâtel (Switzerland) and assessed the relationships 1) among...

Sphaerospora molnari (Myxozoa) SMBS transcriptome data

Ashlie Hartigan, Anush Kosakyan, Hana Pecková, Edit Eszterbauer & Astrid Holzer
Parasites employ proteases to evade host immune systems, feed and replicate and are often the target of anti-parasite strategies to disrupt these interactions. Myxozoans are obligate cnidarian parasites, alternating between invertebrate and fish hosts. They are highly divergent from other metazoans with regard to their gene sequences, and available genomic and transcriptomic datasets are limited. Some myxozoans are important aquaculture pathogens such as Sphaerospora molnari replicating in the blood of farmed carp before reaching the...

Assembly of Aegilops umbellulata chromosomes

Michael Abrouk, István Molnár, Mihaela Martis, Eva Hřibová, Hana Šimková, Jan Vrána, András Farkas, Szabolc Makai, Angéla Juhász, Burkhard Steuernagel, Marie Kubaláková, Klaus Mayer, Márta Molnár-Láng, Jaroslav Doležel & Jan Bartoš
We sequenced and assembled seven chromosomes of Aegilops umbellulata. The assembly with Meraculous resulted in ~ 101k - 191k scaffolds per chromosome with N50 size 2.9kb – 4.0kb. The scaffold sequences were used for development of molecular markers specific for cDNAs sequences mapped on Ae. umbellulata chromosomes Pairwise alignment of wheat cDNA-sequences and the chromosomal scaffolds of Ae. umbellulata identified candidate sequences. In order to analyze the structure and homeology of Aegilops chromosomes, forty-three mapped...

Data from: Correlation of neurochemical and imaging markers in migraine PACAP38 and DTI measures

Dániel Veréb, Nikoletta Szabó, Bernadett Tuka, János Tajti, András Király, Péter Faragó, Krisztián Kocsis, Eszter Tóth, Bálint Kincses, Teréz Bagoly, Zsuzsanna Helyes, László Vécsei & Zsigmond Tamás Kincses
Objective: This exploratory study examines whether interictal plasma pituitary adenylate cyclase-activating peptide 38-like immunoreactivity shows correlation with the microstructural integrity of the white matter in migraine. Methods: Interictal plasma pituitary adenylate cyclase-activating peptide 38-like immunoreactivity was measured by radioimmunoassay in 26 migraine patients (24 females) who underwent diffusion tensor imaging (DTI) afterwards using a 1.5T MR scanner. Data were analysed using Tract-based Spatial Statistics (TBSS) included in FMRIB’s Software Library (FSL). Results: Interictal plasma pituitary...

Data from: Functional diversity supports the biomass-diversity humped-back relationship in phytoplankton assemblages

Péter Török, Enikő T-Krasznai, Viktória B-Béres, István Bácsi, Gábor Borics & Béla Tóthmérész
Modelling the relationship between biomass and diversity in phytoplankton assemblages provides new insights into the mechanisms responsible for the coexistence of species, even in terrestrial ecosystems. We tested the biomass–diversity relationship in lake phytoplankton along a wide biomass gradient using functional species groups. We hypothesized that changes in the taxonomic diversity of the phytoplankton along a biomass gradient are associated with altered functional diversity. For the analyses, in total 768 samples were collected from 30...

Data from: Long-term population dynamics of dreissenid mussels (Dreissena polymorpha and D. rostriformis): a cross-system analysis

David L. Strayer, Boris V. Adamovich, Rita Adrian, David C. Aldridge, Csilla Balogh, Lyubov E. Burlakova, Hannah B. Fried-Petersen, László G.‐Tóth, Amy L. Hetherington, Thomas S. Jones, Alexander Y. Karatayev, Jacqueline B. Madill, Oleg A. Makarevich, J. Ellen Marsden, Andre L. Martel, Dan Minchin, Thomas F. Nalepa, Ruurd Noordhuis, Timothy J. Robinson, Lars G. Rudstam, Astrid N. Schwalb, David R. Smith, Alan D. Steinman & Jonathan M. Jeschke
Dreissenid mussels (including the zebra mussel Dreissena polymorpha and the quagga mussel D. rostriformis) are among the world's most notorious invasive species, with large and widespread ecological and economic effects. However, their long‐term population dynamics are poorly known, even though these dynamics are critical to determining impacts and effective management. We gathered and analyzed 67 long‐term (>10 yr) data sets on dreissenid populations from lakes and rivers across Europe and North America. We addressed five...

Data from: Within-individual plasticity explains age-related decrease in stress response in a short-lived bird

Ádám Z. Lendvai, Mathieu Giraudeau, Veronika Bókony, Frédéric Angelier & Olivier Chastel
A crucial problem for every organism is how to allocate energy between competing life-history components. The optimal allocation decision is often state-dependent and mediated by hormones. Here, we investigated how age, a major state variable affects individuals' hormonal response to a standardized stressor: a trait that may reflect allocation between self-maintenance and reproduction. We caught free-living house sparrows and measured their hormonal (corticosterone) response to capture stress in consecutive years. Using a long-term ringing dataset,...

Data from: An integrative skeletal and paleogenomic analysis of stature variation suggests relatively reduced health for early European farmers

Stephanie Marciniak, Christina Bergey, Ana Maria Silva, Agata Hałuszko, Mirosław Furmanek, Barbara Veselka, Petr Velemínský, Giuseppe Vercellotti, Joachim Wahl, Gunita Zarina, Cristina Longhi, Jan Kolář, Rafael Garrido-Pena, Raúl Flores-Fernández, Ana M. Herrero-Corral, Angela Simalcsik, Werner Müller, Alison Sheridan, Žydrūnė Miliauskienė, Rimantas Jankauskas, Vyacheslav Moiseyev, Kitti Köhler, Ágnes Király, Beatriz Gamarra, Olivia Cheronet … & George H. Perry
Human culture, biology, and health were shaped dramatically by the onset of agriculture ~12,000 years before present (BP). This shift is hypothesized to have resulted in increased individual fitness and population growth as evidenced by archaeological and population genomic data alongside a decline in physiological health as inferred from skeletal remains. Here, we consider osteological and ancient DNA data from the same prehistoric individuals to study human stature variation as a proxy for health across...

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  • Hungarian Academy of Sciences
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  • Helmholtz Zentrum München
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  • Nuvia (United Kingdom)
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  • Institute for Anthropological Research
  • University of Padua