20 Works

Floral preferences of mountain bumble bees are constrained by functional traits but flexible through elevation and season

Douglas Sponsler, Katharina Kallnik, Fabrice Requier, Alice Classen, Anne Maihoff, Johanna Sieger & Ingolf Steffan-Dewenter
Patterns of resource use by animals can clarify how ecological communities have assembled in the past, how they currently function, and how they are likely to respond to future perturbations. Bumble bees (Hymentoptera: Bombus spp.) and their floral hosts provide a diverse yet tractable system in which to explore resource selection in the context of plant-pollinator networks. Under conditions of resource limitation, the ability of bumble bees species to coexist should depend on dietary niche...

Evidence of cognitive spezialization in an insect: proficiency is maintained across elemental and higher-order visual learning but not between sensory modalities in honey bees

Valerie Finke, David Baracchi, Martin Giurfa, Ricarda Scheiner & Aurore Avarguès-Weber
Individuals differing in their cognitive abilities and foraging strategies may confer a valuable benefit to their social groups as variability may help responding flexibly in scenarios with different resource availability. Individual learning proficiency may either be absolute or vary with the complexity or the nature of the problem considered. Determining if learning abilities correlate between tasks of different complexity or between sensory modalities has a high interest for research on brain modularity and task-dependent specialisation...

Disentangling effects of climate and land use on biodiversity and ecosystem services – a multi-scale experimental design

Sarah Redlich, Jie Zhang, Caryl Benjamin, Maninder Singh Dhillon, Jana Englmeier, Jörg Ewald, Ute Fricke, Cristina Ganuza, Maria Hänsel, Thomas Hovestadt, Johannes Kollmann, Thomas Koellner, Carina Kübert-Flock, Harald Kunstmann, Annette Menzel, Christoph Moning, Wibke Peters, Rebekka Riebl, Thomas Rummler, Sandra Rojas Botero, Cynthia Tobisch, Johannes Uhler, Lars Uphus, Jörg Müller & Ingolf Steffan-Dewenter
1. Climate and land-use change are key drivers of environmental degradation in the Anthropocene, but too little is known about their interactive effects on biodiversity and ecosystem services. Long-term data on biodiversity trends are currently lacking. Furthermore, previous ecological studies have rarely considered climate and land use in a joint design, did not achieve variable independence or lost statistical power by not covering the full range of environmental gradients. 2. Here, we introduce a multi-scale...

Contrasting patterns of richness, abundance, and turnover in mountain bumble bees and their floral hosts

Douglas Sponsler
Environmental gradients generate and maintain biodiversity on Earth. Mountain slopes are among the most pronounced terrestrial environmental gradients, and the elevational structure of species and their interactions can provide unique insight into the processes that govern community assembly and function in mountain ecosystems. We recorded bumble bee-flower interactions over three years along an 1400 m elevational gradient in the German Alps. Using nonlinear modeling techniques, we analyzed elevational patterns at the levels of abundance, species...

Efficient Complexation of N-Acetyl Amino Acid Carboxylates in Water by an Artificial Receptor:  Unexpected Cooperativity in the Binding of Glutamate but Not Aspartate

Carsten Schmuck & Lars Geiger
A new tris-cation 1 binds N-acetyl amino acid carboxylates in water even at millimolar salt concentrations with Kass ≈ 103 M-1 due to a clustering of electrostatic interactions. Binding is efficient enough to allow a naked-eyed detection using an indicator displacement assay. Furthermore, receptor 1 shows an unexpected 2:1 complex formation with strong positive cooperativity with glutamate but not aspartate.

Data for spin quantum beats in pump push spectroscopy

Christoph Lambert, David Mims, Jonathan Herpich, Nikita Lukzen & Ulrich Steiner
Spin quantum beats prove the quantum nature of reactions involving radical pairs, the key species of spin chemistry. However, such quantum beats remain hidden to transient-absorption-based optical observation because the spin hardly affects the radical pairs’ absorption properties. We succeeded in demonstrating such quantum beats in the photo-induced charge separated state (CSS) of an electron-donor-acceptor dyad by using two laser pulses, one for pumping the sample, and another one, with variable delay, for further exciting...

Host specificity and species colouration mediate the regional decline of nocturnal moths in central European forests

Nicolas Roth, Herrman Hacker, Lea Heidrich, Nicolas Friess, Enrique García-Barros, Jan Habel, Simon Thorn & Jörg Müller
The high diversity of insects has limited the volume of long-term community data with a high taxonomic resolution and considerable geographic replications, especially in forests. Therefore, trends and causes of changes are poorly understood. Here we analyse trends in species richness, abundance and biomass of nocturnal macro moths in three quantitative data sets collected over four decades in forests in southern Germany. Two local data sets, one from coppiced oak forests and one from high...

Agent‐based modeling of the effects of forest dynamics, selective logging, and fragment size on epiphyte communities

Gunnar Petter, Gerhard Zotz, Holger Kreft & Juliano Sarmento Cabral
Forest canopies play a crucial role in structuring communities of vascular epiphytes by providing substrate for colonization, by locally varying microclimate, and by causing epiphyte mortality due to branch or tree fall. However, as field studies in the three-dimensional habitat of epiphytes are generally challenging, our understanding of how forest structure and dynamics influence the structure and dynamics of epiphyte communities is scarce. Mechanistic models can improve our understanding of epiphyte community dynamics. We present...

Relative impacts of gypsy moth outbreaks and insecticide treatments on forest resources and ecosystem: An experimental approach

Benjamin Leroy, Hannes Lemme, Philipp Braumiller, Torben Hilmers, Martin Jacobs, Sophia Hochrein, Sebastian Kienlein, Jörg Müller, Hans Pretzsch, Kilian Stimm, Sebastian Seibold, Jessica Jaworek, W. Andreas Hahn, Stefan Müller-Kroehling & Wolfgang Weisser
Gypsy moth outbreaks cause severe defoliation in Holarctic forests, both in North America where it is invasive, and in its native range in Eurasia. Severe defoliation can hamper timber production and impact ecological communities and processes. Aerial insecticide applications are regularly performed in outbreak areas to mitigate economic losses. These operations can be financially costly and harmful to non-target species and may disrupt species interaction networks. However, replicated studies of the relative impacts of gypsy...

Data from: Middle Bronze Age land use practices in the north-western Alpine foreland – A multi-proxy study of colluvial deposits, archaeological features and peat bogs

Sascha Scherer, Benjamin Höpfer, Katleen Deckers, Elske Fischer, Markus Fuchs, Ellen Kandeler, Eva Lehndorff, Johanna Lomax, Sven Marhan, Elena Marinova, Julia Meister, Christian Poll, Humay Rahimova, Manfred Rösch, Kristen Wroth, Julia Zastrow, Thomas Knopf, Thomas Scholten & Peter Kühn
This paper aims to reconstruct Middle Bronze Age (MBA) land use practices in the north-western Alpine foreland (SW Germany, Hegau). We used a multi-proxy approach including the biogeochemical proxies from colluvial deposits in the surrounding of the well-documented settlement site of Anselfingen and offsite pollen data from two peat bogs. This approach allowed in-depth insights into the MBA subsistence economy and shows that the MBA in the north-western Alpine foreland was a period of establishing...

Data from: A multi-taxa assessment of the effectiveness of agri-environmental schemes for biodiversity management

Fabian A. Boetzl, Jochen Krauss, Jonathan Heinze, Hannes Hoffmann, Jan Juffa, Sebastian König, Elena Krimmer, Maren Prante, Emily A. Martin, Andrea Holzschuh & Ingolf Steffan-Dewenter
Agri-environmental schemes (AES) aim to restore biodiversity and biodiversity-mediated ecosystem services in landscapes impoverished by modern agriculture. However, a systematic, empirical evaluation of different AES types across multiple taxa and functional groups is missing. Within one orthogonal design, we studied sown flowering AES types with different temporal continuity, size, and landscape context and used calcareous grasslands as semi-natural reference habitat. We measured species richness of twelve taxonomic groups (vascular plants, cicadas, orthopterans, bees, butterflies, moths,...

Data for: Tracking the temporal dynamics of insect defoliation by high-resolution radar satellite data

Soyeon Bae, Jörg Müller, Bernhard Förster, Torben Hilmers, Sophia Hochrein, Martin Jacobs, Benjamin Leroy, Hans Pretzsch, Wolfgang Weisser & Oliver Mitesser
1. Quantifying tree defoliation by insects over large areas is a major challenge in forest management, but it is essential in ecosystem assessments of disturbance and resistance against herbivory. However, the trajectory from leaf-flush to insect defoliation to refoliation in broadleaf trees is highly variable. Its tracking requires high temporal- and spatial-resolution data, particularly in fragmented forests. 2. In a unique replicated field experiment manipulating gypsy moth Lymantria dispar densities in mixed-oak forests, we examined...

Data from: Traits mediate niches and co-occurrences of forest beetles in ways that differ among bioclimatic regions

Ryan C. Burner, Jörg G. Stephan, Lukas Drag, Tone Birkemoe, Jörg Muller, Tord Snäll, Otso Ovaskainen, Mária Potterf, Juha Siitonen, Olav Skarpaas, Inken Doerfler, Martin M. Gossner, Peter Schall, Wolfgang W. Weisser & Anne Sverdrup-Thygeson
Aim To investigate the role of traits in beetle community assembly and test for consistency in these effects among several bioclimatic regions. We asked (1) whether traits predicted species’ responses to environmental gradients (i.e., their niches), (2) whether these same traits could predict co-occurrence patterns, and (3) how consistent were niches and the role of traits among study regions. Location Boreal forests in Norway and Finland, temperate forests in Germany. Methods We complied capture records...

Morphological trait database of saproxylic beetles

Jonas Hagge, Jörg Müller, Tone Birkemoe, Jörn Buse, Rune Haubo Bojesen Christensen, Martin M. Gossner, Axel Gruppe, Christoph Heibl, Andrea Jarzabek-Müller, Sebastian Seibold, Juha Siitonen, João Gonçalo Soutinho, Anne Sverdrup-Thygeson, Simon Thorn & Lukas Drag
The extinction of species is a non-random process, and understanding why some species are more likely to go extinct than others is critical for conservation efforts. Functional trait-based approaches offer a promising tool to achieve this goal. In forests, deadwood-dependent (saproxylic) beetles comprise a major part of threatened species, but analyses of their extinction risk have been hindered by the availability of suitable morphological traits. To better understand the mechanisms underlying extinction in insects, we...

Data from: Evaluating predictive performance of statistical models explaining wild bee abundance in a mass-flowering crop

Maria Blasi Romero, Ignasi Bartomeus, Riccardo Bommarco, Vesna Gagic, Michael Garratt, Andrea Holzschuh, David Kleijn, Sandra A.M. Lindström, Peter Olsson, Chiara Polce, Simon G. Potts, , Jeroen Scheper, Henrik G. Smith, Ingolf Steffan-Dewenter & Yann Clough
Wild bee populations are threatened by current agricultural practices in many parts of the world, which may put pollination services and crop yields at risk. Loss of pollination services can potentially be predicted by models that link bee abundances with landscape-scale land-use, but there is little knowledge on the degree to which these statistical models are transferable across time and space. This study assesses the transferability of models for wild bee abundance in a mass-flowering...

Immune challenges increase network centrality in a queenless ant

Giacomo Alciatore, Line V. Ugelvig, Erik Frank, Jérémie Bidaux, Asaf Gal, Thomas Schmitt, Daniel J.C. Kronauer & Yuko Ulrich
Social animals display a wide range of behavioural defences against infectious diseases, some of which inherently increase social contacts with infectious individuals (e.g., mutual grooming), while others decrease them (e.g., social exclusion). These defences often rely on the detection of infectious individuals, but this can be achieved in several ways that are difficult to differentiate. Here, we combine non-pathogenic immune challenges with automated tracking in colonies of the clonal raider ant to ask whether ants...

Relationship of insect biomass and richness with land use along a climate gradient

Johannes Uhler
This dataset contains data from a field study conducted in 2019 and described in the paper "Relationship of insect biomass and richness with land use along a climate gradient" by Uhler et al. In this study, arthropod communities were collected by Malaisetraps along a land use and climate gradient and identified by Metabarcoding. Malaise traps are versatile passive net-traps, capable of catching a large spectrum of insect taxa and are very effective when the aim...

Forest spider data to study the response of assemblages to regional and local processes

Jörg Müller
Understanding species richness variation among local communities is one of the central topics in ecology, but the complex interplay of regional processes, environmental filtering and local processes hampers generalization on the importance of different processes. Here, we aim to unravel drivers of spider community assembly in temperate forests by analyzing two independent data sets covering gradients in elevation and forest succession. We test the following four hypotheses: (H1) Spider assemblages within a region are limited...

Data from: Putting vascular epiphytes on the traits map

Peter Hietz, Katrin Wagner, Flavio Nunes Ramos, Juliano Sarmento Cabral, Gerhard Zotz, Claudia Agudelo, Ana Maria Benavides, Manuel Cach Pérez, Catherine Cardelús, Nahelli Chilpa Galván, Lucas Costa, Rodolfo De Paula Oliveiras, Helena Einzmann, Rafael Farias, Valeria Guzmán Jacob, Michael Kessler, Catherine Kirby, Holger Kreft, Thorsten Krömer, Jamie Males, Samuel Monsalve Correa, Maria Moreno, Gunnar Petter, Casandra Reyes, Alfredo Saldaña … & Carrie Woods
Epiphyte trait data for the paper Hietz et al. 2021 Putting vascular epiphytes on the traits map. Journal of Ecology Plant functional traits impact the fitness and environmental niche of plants. Major plant functional types have been characterized by their trait spectrum, and the environmental and phylogenetic imprints on traits have advanced several ecological fields. Yet very few trait data on epiphytes, which represent almost 10% of vascular plants, are available. We collated >80,000 mostly...

Comparing the appetitive learning performance of six European honeybee subspecies in a common apiary

Ricarda Scheiner, Kayun Lim, Marina Meixner & Martin Gabel
Raw data on gustatory response scores and learning performance of individual worker bees belonging to one of six subspecies of the Western honeybee (A. mellifera). All study colonies were kept together in a common apiary to ensure a uniform environment. Individual bees were tested in standardized protocols for classical olfactory learning and gustatory responsiveness.

Registration Year

  • 2021

Resource Types

  • Dataset


  • University of Würzburg
  • University of Göttingen
  • Technical University Munich
  • Carl von Ossietzky University of Oldenburg
  • Swiss Federal Institute of Technology in Zurich
  • University of Bayreuth
  • Natural Resources Institute Finland
  • Swedish University of Agricultural Sciences
  • Landesbetrieb Landwirtschaft Hessen
  • Estación Biológica de Doñana