12 Works

The way bioclimatic variables are calculated has impact on potential distribution models

Ákos Bede-Fazekas & Imelda Somodi
1. Bioclimatic variables (BCVs) are routinely used in potential distribution models, typically without considering their calculation options in detail. We aimed at studying the impact of a decision, yet unexamined, on the calculation of BCVs, namely whether the identity of specific months/quarters in the calculation of BCVs should be updated for the future periods (temporal context). Effects on the performance of potential distribution models and on their projections were investigated. Additionally, we also aimed at...

Functional integration of multiple sexual ornaments: signal coherence and sexual selection

Gergely Hegyi, Miklós Laczi, Márton Herényi, Gábor Markó, Gergely Nagy, Balázs Rosivall, Eszter Szász & János Török
The sexual ornamentation of animals typically consists of multiple distinct traits. The classical research approach focuses on differences among these traits, but this approach may often be misleading because of correlations among distinct sexual traits of similar origins. There are many published studies on the correlation structures of sexual traits, but the way receivers take into account the components of an integrated, multi-component trait system remains mostly unknown. Here we propose a general analytical framework...

Worldwide evidence of a unimodal relationship between productivity and plant species richness

Lauchlan H. Fraser, Jason Pither, Anke Jentsch, Marcelo Sternberg, Martin Zobel, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Jonathan A. Bennett, Alex Bittel, Bazartseren Boldgiv, Ilsi I. Boldrini, Edward Bork, Leslie Brown, Marcelo Cabido, James Cahill, Cameron N. Carlyle, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Anna-Maria Csergo, Sandra Diaz, Lucas Enrico, David Ensing, Alessandra Fidelis … & Szilárd Szentes
The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and...

A practical approach to measuring the acoustic diversity by community ecology methods

Sándor Zsebők, Dénes Schmera, Miklós Laczi, Gergely Nagy, Éva Vaskuti, János Török & László Garamszegi
The study of the diversity of animal signals on within- and among-species levels is the key to uncover mechanisms that shape the evolution of communication systems. However, the methods used to quantify acoustic diversity (like repertoire size) lack to grasp several aspects of acoustic diversity. Here, we propose a new framework for the study of animal communication, in which we decompose the acoustic diversity with the methodological toolbox from community ecology. We explore how different...

Data from: Species richness effects on grassland recovery from drought depend on community productivity in a multisite experiment

Juergen Kreyling, Jürgen Dengler, Julia Walter, Nikolay Velev, Emin Ugurlu, Desislava Sopotlieva, Johannes Ransijn, Catherine Picon-Cochard, Ivan Nijs, Pauline Hernandez, Behlül Güler, Philipp Von Gillhaussen, Hans J. De Boeck, Juliette M. G. Bloor, Sigi Berwaers, Carl Beierkuhnlein, Mohammed A. S. Arfin Khan, Iva Apostolova, Yasin Altan, Michaela Zeiter, Camilla Wellstein, Marcelo Sternberg, Andreas Stampfli, Giandiego Campetella, Sándor Bartha … & Juliette M.G. Bloor
Biodiversity can buffer ecosystem functioning against extreme climatic events, but few experiments have explicitly tested this. Here, we present the first multisite biodiversity × drought manipulation experiment to examine drought resistance and recovery at five temperate and Mediterranean grassland sites. Aboveground biomass production declined by 30% due to experimental drought (standardised local extremity by rainfall exclusion for 72–98 consecutive days). Species richness did not affect resistance but promoted recovery. Recovery was only positively affected by...

Turning old foes into new allies – harnessing drainage canals for biodiversity conservation in a desiccated European lowland region

Csaba Tölgyesi, Attila Torma, Zoltán Bátori, Jelena Seat, Milos Popovic, Róbert Gallé, Nikolett Gallé-Szpisjak, László Erdős, Tamás Vinkó, András Kelemen & Péter Török
1. Drainage canals are widespread components of agricultural landscapes. Although canals have greatly contributed to biodiversity loss by desiccating wetlands, they have recently attracted conservation attention due to their potential to function as refugia for native species in intensively managed landscapes. However, their conservation role in complex landscapes composed of agricultural fields and desiccated but otherwise untransformed, semi-natural habitats, on which canals still pose a heavy burden, is unknown. Improved understanding of drainage canals and...

Data from: Foraging decisions with conservation consequences: Interaction between beavers and invasive tree species

Erika Juhász, Ákos Bede-Fazekas, Krisztián Katona, Zsolt Molnár & Marianna Biró
Herbivore species can either hinder or accelerate the invasion of woody species through selective utilization. Therefore, an exploration of foraging decisions can contribute to the understanding and forecasting of woody plant invasions. Despite the large distribution range and rapidly growing abundance of beaver species across the Northern Hemisphere, only a few studies focus on the interaction between the beaver and invasive woody plants. We collected data on the woody plant supply and utilization at 20...

Data from: The effect of social environment on bird song: listener-specific expression of a sexual signal

Mónika Jablonszky, Sándor Zsebők, Miklós Laczi, Gergely Nagy, Éva Vaskuti & László Zsolt Garamszegi
Animal signals should consistently differ among individuals to convey distinguishable information about the signalers. However, behavioral display signals, such as bird song are also loaded with considerable within-individual variance with mostly unknown function. We hypothesized that the immediate social environment may play a role in mediating such variance component, and investigated in the collared flycatcher (Ficedula albicollis) if the identity and quality of listeners could affect song production in signalers. After presenting territorial males with...

Data from: Changes in assembly rules along a stress gradient from open dry grasslands to wetlands

Barbara Lhotsky, Bence Kovács, Gábor Ónodi, Anikó Csecserits, Tamás Rédei, Attila Lengyel, Miklós Kertész & Zoltán Botta-Dukát
A central issue of community ecology is finding rules that explain the composition and abundance of co-existing species. Nowadays two main processes, environmental filtering and limiting similarity are thought to play the main roles in structuring communities. Their relative importance under different environmental conditions, however, is still not properly clarified. We studied the strength and the effect of environmental filtering (causing convergence) and limiting similarity (causing divergence) in 137 sample plots along an extremely long...

Data from: Conservation of pollinators in traditional agricultural landscapes – new challenges in Transylvania (Romania) posed by EU accession and recommendations for future research

Anikó Kovács-Hostyánszki, Rita Földesi, Edina Mózes, Ádám Szirák, Joern Fischer, Jan Hanspach & András Báldi
Farmland biodiversity is strongly declining in most of Western Europe, but still survives in traditional low intensity agricultural landscapes in Central and Eastern Europe. Accession to the EU however intensifies agriculture, which leads to the vanishing of traditional farming. Our aim was to describe the pollinator assemblages of the last remnants of these landscapes, thus set the baseline of sustainable farming for pollination, and to highlight potential measures of conservation. In these traditional farmlands in...

Data from: Isotopic methods for non-destructive assessment of carbon dynamics in shrublands under long-term climate change manipulation

Louise C. Andresen, Maria T. Dominguez, Sabine Reinsch, Andy R. Smith, Inger Kappel Schmidt, Per Ambus, Claus Beier, Pascal Boeckx, Roland Bol, Giovanbattista De Dato, Bridget A. Emmett, Marc Estiarte, Mark H. Garnett, György Kröel-Dulay, Sharon L. Mason, Cecilie S. Nielsen, Josep Penuelas, Albert Tietema & Andrew R. Smith
1.Long-term climate change experiments are extremely valuable for studying ecosystem responses to environmental change. Examination of the vegetation and the soil should be non-destructive to guarantee long-term research. In this paper, we review field methods using isotope techniques for assessing carbon dynamics in the plant-soil-air continuum, based on recent field experience and examples from a European climate change manipulation network. 2.Eight European semi-natural shrubland ecosystems were exposed to warming and drought manipulations. One field site...

Data from: Lifelong foraging and individual specialisation are influenced by temporal changes of resource availability

Viktor Szigeti, Ádám Kőrösi, Andrea Harnos & János Kis
Resource availability largely determines the distribution and behaviour of organisms. In plant‐pollinator communities, availability of floral resources may change so rapidly that pollinator individuals can benefit from switching between multiple resources, i.e. different flowering plant species. Insect pollinator individuals of a given generation often occur in different time windows during the reproductive season. This temporal variation in individual occurrences, together with the rapidly changing resource availability, may lead individuals of the same population to encounter...

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  • Institute of Ecology and Botany
  • Eötvös Loránd University
  • University of Camerino
  • University of Bayreuth
  • University of Bern
  • University of Kansas
  • Bangor University
  • Islamic Azad University
  • University of Antwerp
  • University of Nis