20 Works

Data from: Growth and survival of the superorganism: ant colony macronutrient intake and investment

Chris Smith & Yeisson Gutierrez
In this study, we used two common ant species (Lasius niger and L. neoniger) to assay how they translate variation in the diet (both in composition and frequency) into growth. We measured colony development for over 8 months and measured several phenotypic traits of the worker caste, and examined whether forager preference corresponded with diet quality. Optimal colony growth was a balance between survival and growth, and each of these were maximized with different nutrient...

Multikriterielle Bewertung der Energiewende. Nachhaltigkeitsprofile zum Kohleausstieg

Armin Bangert, Ulrich Fahl, Hannes Gaschnig, Claudia Hofer, Oliver Kaltenegger, Jürgen Kopfmüller, Christian Loos, Andreas Löschel, Robert Pietzcker, Michael Quante, Ortwin Renn, Rainer Quitzow, Sabine Schlacke, Volker Stelzer, Daniel Schnittker, Pablo Thier & Gerald Zunker

Data from: On the objectivity, reliability, and validity of deep learning enabled bioimage analyses

Dennis Segebarth, Matthias Griebel, Nikolai Stein, Cora R. Von Collenberg, Corinna Martin, Dominik Fiedler, Lucas B. Comeras, Anupam Sah, Victoria Schoeffler, Theresa Lüffe, Alexander Dürr, Rohini Gupta, Manju Sasi, Christina Lillesaar, Maren D. Lange, Ramon O. Tasan, Nicolas Singewald, Hans-Christian Pape, Christoph M. Flath & Robert Blum
Bioimage analysis of fluorescent labels is widely used in the life sciences. Recent advances in deep learning (DL) allow automating time-consuming manual image analysis processes based on annotated training data. However, manual annotation of fluorescent features with a low signal-to-noise ratio is somewhat subjective. Training DL models on subjective annotations may be instable or yield biased models. In turn, these models may be unable to reliably detect biological effects. An analysis pipeline integrating data annotation,...

Data from: Heritable variation in root secondary metabolites is associated with recent climate

Zoe Bont, Tobias Züst, Carla Arce, Meret Huber & Matthias Erb
1. Plants can adapt to changing environments by adjusting the production and maintenance of diverse sets of bioactive secondary metabolites. To date, the impact of climatic conditions relative to other factors such as soil abiotic factors and herbivore pressure on the evolution of plant secondary metabolites is poorly understood, especially for plant roots. 2. We explored associations between root latex secondary metabolites in 63 Taraxacum officinale populations across Switzerland and climatic conditions, soil abiotic parameters,...

Data from: Adapted dandelions trade dispersal for germination upon root herbivore attack

Zoe Bont, Marc Pfander, Christelle Robert, Meret Huber, Erik Poelman, Ciska Raaijmakers & Matthias Erb
A plant’s offspring may escape unfavourable local conditions through seed dispersal. Whether plants use this strategy to escape insect herbivores is not well understood. Here, we explore how different dandelion (Taraxacum officinale agg.) populations, including diploid outcrossers and triploid apomicts, modify seed dispersal in response to root herbivore attack by their main root-feeding natural enemy, the larvae of the common cockchafer Melolontha melolontha. In a manipulative field experiment, root herbivore attack increased seed dispersal potential...

Rapid adaptive evolution to drought in a subset of plant traits in a large-scale climate change experiment

Johannes Metz, Christian Lampei, Laura Bäumler, Hervé Bocherens, Hannes Dittberner, Lorenz Henneberg, Juliette De Meaux & Katja Tielbörger
Rapid evolution of traits and of plasticity may enable adaptation to climate change, yet solid experimental evidence under natural conditions is scarce. Here, we imposed rainfall manipulations (+30%, control, -30%) for ten years on entire natural plant communities in two Eastern Mediterranean sites. Additional sites along a natural rainfall gradient and selection analyses in a greenhouse assessed whether potential responses were adaptive. In both sites, our annual target species Biscutella didyma consistently evolved earlier phenology...

Gottesbilder der orthodoxen Schülerinnen und Schüler

Thomas Benesch & Yauheniya Danilovich
Orthodoxe Jugendliche wurden bis jetzt nur wenig im Blick der empirischen religionspädagogischen Forschung genommen. Im Beitrag werden Ergebnisse einer in Österreich durchgeführten Fragebogenuntersuchung präsentiert, die erste Einblicke ihrer Art in die Gottesbilder orthodoxen Jugendlichen gewähren. Die Grundlage der Untersuchung bildet ein semantisches Differential. Den Ergebnissen kann man entnehmen, dass die Prädikate nach den Häufigkeiten des semantischen Differentials u.a. dem Gottesbild in der orthodoxen Tradition sowohl trinitarisch, als auch christologisch entsprechen können. Des Weiteren wird reflektiert,...

GA382: Byzantinisches \"Allerlei\": accompanying data

Annette Huffmeier
The 14 PDF files available here provide the accompanying data for Annette Hüffmeier, 'GA382: Byzantinisches "Allerlei".' Pages 109–122 in The New Testament in Antiquity and Byzantium: Traditional and Digital Approaches to its Texts and Editing. A Festschrift for Klaus Wachtel, ed. H.A.G. Houghton, David C. Parker, Holger Strutwolf (ANTF 52. De Gruyter: Berlin and New York, 2019).

Data from: The perception of caricatured emotion in voice

Caroline M. Whiting, Sonja A. Kotz, Joachim Gross, Bruno L. Giordano & Pascal Belin
Data for Whiting et al. (2020, Cognition): "The perception of caricatured emotion in voice". Raw behavioural data and sound stimuli.

All Forms of MDM-Portal, licensed under CC-BY 4.0

All Forms of MDM-Portals, licensed under CC-BY 4.0

Efficient Error-bounded Curvature Optimization for Smooth Machining Paths

Evgenia Selinger & Lars Linsen
Automated machining with 3-axis robots requires the generation of tool paths in form of positions of the tool tip. For 5-axis robots, the orientations of the tool at each position needs to be provided, as well. Such a tool path can be described in form of two curves, one for the positional information (as for 3-axis machining) and one for the orientational information, where the orientation is given by the vector that points from a...

Data from: Adaptive reshaping of the hormonal phenotype after social niche transition in adulthood

Alexandra M. Mutwill, Tobias D. Zimmermann, Antonia Hennicke, S. Helene Richter, Sylvia Kaiser & Norbert Sachser
Phenotypic plasticity allows individuals to adjust traits to the environment. Whether long-term adjustments of the phenotype occur during later life stages is largely unknown. To address this question, we examined whether hormonal phenotypes that are shaped by the environment during adolescence can still be reshaped in full adulthood. For this, guinea pig males were either housed in mixed-sex colonies or in heterosexual pairs. In adulthood, males were individually transferred to pair housing with a female....

Diet composition and social environment determine food consumption, phenotype and fitness in an omnivorous insect

Yeisson Gutiérrez Lopez, Marion Fresch, David Ott, Jens Brockmeyer & Christoph Scherber
Nutrition is the single most important factor for individual’s growth and reproduction. Consequently, the inability to reach the nutritional optimum imposes severe consequences for animal fitness. Yet, under natural conditions organisms may face a mixture of stressors that can modulate the effects of nutritional asymmetry. For instance, stressful environments caused by intense interaction with conspecifics. Here, we subjected the house-cricket Acheta domesticus to i) either of two types of diet that have proven to affect...

Decomposition disentangled: a test of the multiple mechanisms by which nitrogen enrichment alters litter decomposition

Eric Allan, Noémie Pichon, Seraina Cappelli, Santiago Soliveres, Norbert Hölzel, Valentin Klaus & Till Kleinebecker
Nitrogen (N) enrichment has direct effects on ecosystem functioning by altering soil abiotic conditions and indirect effects by reducing plant diversity and shifting plant functional composition from dominance by slow to fast growing species. Litter decomposition is a key ecosystem function and is affected by N enrichment either by a change in litter quality (the recalcitrance of the plant material) or through a change in soil quality (the abiotic and biotic components of the soil...

Data from: Declining human pressure and opportunities for rewilding in the steppes of Eurasia

Matthias Baumann, Johannes Kamp, Florian Pötzschner, Benjamin Bleyhl, Andrey Dara, Brett Hankerson, Alexander Prishchepov, Florian Schierhorn, Daniel Müller, Norbert Hölzel, Roland Krämer, Ruslan Urazaliyev & Tobias Kuemmerle
Large and ecologically functioning steppe complexes have been lost historically across the globe, but recent land-use changes may allow the reversal of this trend in some regions. We aimed to develop and map indicators of changing human influence using satellite imagery and historical maps, and to use these indicators to identify areas for broad-scale steppe rewilding. Location Eurasian Steppes of Kazakhstan. Methods We mapped decreasing human influence indicated by cropland abandonment, declining grazing pressure, and...

Parasite infection disrupts escape behaviour in fish shoals

Nicolle Demandt, Marit Praetz, Ralf Kurvers, Jens Krause, Joachim Kurtz & Jörn Scharsack
Many prey species have evolved collective responses to avoid predation. They rapidly transfer information about potential predators to trigger and coordinate escape waves. Predation avoidance behaviour is often manipulated by trophically transmitted parasites, to facilitate their transmission to the next host. We hypothesised that the presence of infected, behaviourally altered individuals might disturb the spread of escape waves. We used the tapeworm Schistocephalus solidus, which increases risk-taking behaviour and decrease social responsiveness of its host,...

A little damping goes a long way: code and data

Steve Heim, Matthew Millard, Charlotte Le Mouel & Alexander Badri-Spröwitz
It is currently unclear if damping plays a functional role in legged locomotion, and simple models often do not include damping terms. We present a new model with a damping term that is isolated from other parameters: that is, the damping term can be adjusted without retuning other model parameters for nominal motion. We systematically compare how increased damping affects stability in the face of unexpected ground-height perturbations. Unlike most studies, we focus on task-level...

Data from: Shared and modality-specific brain regions that mediate auditory and visual word comprehension

Anne Keitel, Joachim Gross & Christoph Kayser
Visual speech carried by lip movements is an integral part of communication. Yet, it remains unclear in how far visual and acoustic speech comprehension are mediated by the same brain regions. Using multivariate classification of full-brain MEG data, we first probed where the brain represents acoustically and visually conveyed word identities. We then tested where these sensory-driven representations are predictive of participants’ trial-wise comprehension. The comprehension-relevant representations of auditory and visual speech converged only in...

Post-fire vegetation succession in the Siberian subarctic tundra over 45 years

Ramona Julia Heim, Anna Bucharova, Leya Brodt, Johannes Kamp, Daniel Rieker, Andrey Soromotin, Andrey Yurtaev & Norbert Hölzel
Wildfires are relatively rare in subarctic tundra ecosystems, but they can strongly change ecosystem properties. Short-term fire effects on subarctic tundra vegetation are well documented, but long-term vegetation recovery has been studied less. The frequency of tundra fires will increase with climate warming. Understanding the long-term effects of fire is necessary to predict future ecosystem changes. We used a space-for-time approach to assess vegetation recovery after fire over more than four decades. We studied soil...

Complex post-breeding moult strategies in a songbird migrating along the East Asian flyway, the Pallas’s Grasshopper Warbler Locustella certhiola

Wieland Heim, Hans-Jürgen Eilts, Philip D. Round, Oleg Bourski, Batmunkh Davaasuren, Tuvshinjargal Erdenechimeg & Jong-Gil Park
Moult strategies have received relatively little attention in current ornithology, and knowledge concerning the evolution, variability and extent of moult is sparse in many bird species. This is especially true for East Asian Locustella species where assumptions on moult patterns are based on incomplete information. We provide evidence indicating a complex post-breeding moult strategy and variable moult extent among Pallas’s Grasshopper Warbler Locustella certhiola, based on data from six ringing sites situated along its flyway...

Registration Year

  • 2020
    20

Resource Types

  • Dataset
    17
  • Text
    3

Affiliations

  • University of Münster
    20
  • University of Bern
    3
  • University of Bremen
    2
  • Korea National Park Service
    1
  • University of Würzburg
    1
  • Research Institute for Philosophy Hannover
    1
  • University of Cologne
    1
  • University of Neuchâtel
    1
  • University of Glasgow
    1
  • Netherlands Institute of Ecology
    1