33 Works

Data from: Mechanisms of reciprocity and diversity in social networks: a modelling and comparative approach

Ivan Puga-Gonzalez, Julia Ostner, Oliver Schülke, Sebastian Sosa, Bernard Thierry & Cedric Sueur
Three mechanisms have been proposed to underlie reciprocation of social behaviors in gregarious animals: ‘calculated reciprocity’, ‘emotional bookkeeping’ and ‘symmetry-based reciprocity’. Among these explanations, emotional book-keeping has received the broadest support from experimental and observational studies. On the other hand, three individual-based models have shown that reciprocation may emerge via ‘symmetry-based reciprocity’, ‘emotional bookkeeping’, or a combination of both mechanisms. Here we use these three models to assess their relative fit with empirical data on...

Data from: A barrier island perspective on species-area-relationships

Christoph Scherber, Hagen Andert, Rolf Niedringhaus & Teja Tscharntke
Predictions of species richness by island area are a classical cornerstone in ecology, while the specific features of barrier islands have been little appreciated. Many shorelines are occupied by barrier islands, which are shaped by offshore sedimentation processes and annual storm tide events. Hence, the appearance of these islands may vary between years if they are not protected by dykes. Here, we analyzed more than 2,990 species across 36 taxonomic groups (including vertebrates, invertebrates and...

Data from: Controlled feeding experiments with diets of different abrasiveness reveal slow development of mesowear signal in goats (Capra aegagrus hircus)

Nicole L. Ackermans, Daniela E. Winkler, Ellen Schulz-Kornas, Thomas M. Kaiser, Dennis W.H. Mueller, Patrick R. Kircher, Jurgen Hummel, Marcus Clauss & Jean-Michel Hatt
Dental mesowear is applied as a proxy to determine the general diet of mammalian herbivores based on tooth-cusp shape and occlusal relief. Low, blunt cusps are considered typical for grazers and high, sharp cusps typical for browsers. However, how internal or external abrasives impact mesowear, and the time frame the wear signature takes to develop, still need to be explored. Four different pelleted diets of increasing abrasiveness (lucerne, grass, grass and rice husks, grass, rice...

Data from: Cenozoic evolution of beta diversity and a Pleistocene emergence for modern mammal faunas in China

Jiekun He, Holger Kreft, Siliang Lin, Yang Xu & Haisheng Jiang
Aim Historical changes in community structure underlie modern spatial diversity patterns, but few empirical studies have focused on the variation in the community composition of fossil assemblages at large spatiotemporal scales. We wanted to investigat how the spatial differentiation of mammal communities changed in China throughout the Cenozoic in response to tectonic uplift and paleoclimatic changes and explore the timing of the emergence of the modern spatially structured faunas. Location China Time period Cenozoic (from...

Data from: Trap nests for bees and wasps to analyse trophic interactions in changing environments - a systematic overview and user guide

Michael Staab, Gesine Pufal, Teja Tscharntke & Alexandra-Maria Klein
1. Trap nests are artificially made nesting resources for solitary cavity-nesting bees and wasps and allow easy quantification of multiple trophic interactions between bees, wasps, their food objects and natural enemies. 2. We synthesized all trap nest studies available in the ISI Web of Science™ to provide a comprehensive overview of trap nest research and identify common practical challenges and promising future research directions. 3. Trap nests have been used on all continents and across...

Data from: Physiological and social consequences of gastrointestinal nematode infection in a nonhuman primate

Nadine Müller-Klein, Michael Heistermann, Christina Strube, Zina M. Morbach, Navina Lilie, Mathias Franz, Oliver Schülke & Julia Ostner
Gastrointestinal nematodes are intensely studied models for host-pathogen interactions in wildlife, yet consequences of infections are not fully understood. Among the potential costs of nematode infection are physiological changes caused by immune system activation, reduction or reallocation of available energy, as well as potential social consequences in terms of decreased social activity or avoidance of infected individuals. We used experimental anthelmintic treatment to investigate effects of strongyle nematode infection in Barbary macaques (Macaca sylvanus), comparing...

Data from: Development and validation of a score to detect paroxysmal atrial fibrillation after stroke

Timo Uphaus, Mark Weber-Krüger, Martin Grond, Gerrit Toenges, Anke Jahn-Eimermacher, Marek Jauss, Paulus Kirchhof, Rolf Wachter & Klaus Gröschel
Objective: Prolonged monitoring times (72h) are recommended to detect paroxysmal atrial fibrillation (pAF) after ischemic stroke, but not yet clinical practice; therefore, an individual patient selection for prolonged ECG monitoring might increase the diagnostic yield of pAF in a resource-saving manner. Methods: We used individual patient data from three prospective studies (ntotal=1556) performing prolonged Holter ECG monitoring (at least 72h) and centralized data evaluation after TIA or stroke in patients with sinus rhythm. Based on...

Data from: X-ray computed tomography and its potential in ecological research: a review of studies and optimization of specimen preparation

Yeisson Gutiérrez, David Ott, Mareike Töpperwien, Tim Salditt & Christoph Scherber
Imaging techniques are a cornerstone of contemporary biology. Over the last decades, advances in micro-scale imaging techniques have allowed fascinating new insights into cell and tissue morphology and internal anatomy of organisms across kingdoms. However, most studies so far provided snapshots of given reference taxa, describing organs and tissues under “idealized” conditions. Surprisingly, there is an almost complete lack of studies investigating how an organism´s internal morphology changes in response to environmental drivers. Consequently, ecology...

Data from: Autofertility and self-compatibility moderately benefit island colonization of plants

Mialy Razanajatovo, Mark Van Kleunen, Holger Kreft, Wayne Dawson, Franz Essl, Jan Pergl, Petr Pyšek, Marten Winter & Patrick Weigelt
Aim: The current geographical distribution of species largely reflects colonization success after natural long‐distance dispersal or introduction by humans. Plants with selfing ability should have an advantage when establishing on islands where mates and pollinators are limited (Baker's law). However, high percentages of dioecious and self‐incompatible species have been reported for some islands, possibly resulting from post‐colonization evolution. Given that such evolution is less likely to apply to alien species recently introduced to islands by...

Data from: Diets of giants: the nutritional value of sauropod diet during the Mesozoic

Fiona L. Gill, Juergen Hummel, A. Reza Sharifi, Alexandra P. Lee & Barry H. Lomax
A major uncertainty in estimating energy budgets and population densities of extinct animals is the carrying capacity of their ecosystems, constrained by net primary productivity (NPP) and its digestible energy content. The hypothesis that increases in NPP due to elevated atmospheric CO2 contributed to the unparalleled size of the sauropods has recently been rejected, based on modern studies on herbivorous insects that imply a general, negative correlation of diet quality and increasing CO2. However, the...

Data from: Maize-dominated landscapes reduce bumble bee colony growth through pollen diversity loss

Annika Louise Hass, Lara Brachmann, Péter Batáry, Yann Clough, Hermann Behling & Teja Tscharntke
1. Bumble bees are important pollinators for a wide range of crops and wild plants. Performance of their colonies depends on pollen and nectar as food resources, but flowering plants are scarce in modern agricultural landscapes. It is well-known that semi-natural habitats can enhance floral resources and bumble bee abundance, but the impact of different crop types and their heterogeneity at the landscape scale remains unclear. 2. We tested the effect of two different crop...

Data from: Estimating bird detection distances in sound recordings for standardising detection ranges and distance sampling

Kevin Darras, Brett Furnas, Irfan Fitriawan, Yeni Mulyani & Teja Tscharntke
1) Autonomous sound recorders are increasingly used to survey birds, and other wildlife taxa. Species richness estimates from sound recordings are usually compared with estimates obtained from established methods like point counts, but so far the comparisons were biased: Detection ranges usually differ between the survey methods, and bird detection distance data are needed for standardizing data from sound recordings. 2) We devised and tested a method for estimating bird detection distances from sound recordings,...

Data from: Long-tailed macaques (Macaca fascicularis) can use simple heuristics but fail at drawing statistical inferences from populations to samples

Sarah Placì, Johanna Eckert, Hannes Rakoczy & Julia Fischer
Human infants, apes, and capuchin monkeys engage in intuitive statistics: they generate predictions from populations of objects to samples based on proportional information. This suggests that statistical reasoning might depend on some core knowledge that humans share with other primate species. To aid the reconstruction of the evolution of this capacity, we investigated whether intuitive statistical reasoning is also present in a species of Old World monkey. In a series of 4 experiments, 11 long-tailed...

Data from: The “tolerant chimpanzee” - towards the costs and benefits of sociality in female bonobos

Niina O. Nurmi, Gottfried Hohmann, Lucas G. Goldstone, Tobias Deschner & Oliver Schülke
Humans share an extraordinary degree of sociality with other primates, calling for comparative work into the evolutionary drivers of the variation in social engagement observed between species. Of particular interest is the contrast between the chimpanzee (Pan troglodytes) and bonobo (Pan paniscus), the latter exhibiting increased female gregariousness, more tolerant relationships, and elaborate behavioral adaptations for conflict resolution. Here we test predictions from three socio-ecological hypotheses regarding the evolution of these traits using data on...

Data from: RAD-seq reveals genetic structure of the F2-generation of natural willow hybrids (Salix L.) and a great potential for interspecific introgression

Susanne Gramlich, Natascha Dorothea Wagner & Elvira Hörandl
Background: Hybridization of species with porous genomes can eventually lead to introgression via repeated backcrossing. The potential for introgression between species is reflected by the extent of segregation distortion in later generation hybrids. Here we studied a population of hybrids between Salix purpurea and S. helvetica that has emerged within the last 30 years on a glacier forefield in the European Alps due to secondary contact of the parental species. We used 5,758 biallelic SNPs...

Data from: Effects of natural forest dynamics on vascular plant, bryophyte, and lichen diversity in primeval Fagus sylvatica forests and comparison with production forests

Stefan Kaufmann, Markus Hauck & Christoph Leuschner
1. Stand structure, mean tree age, deadwood amount and microclimate all change markedly in the course of natural forest dynamics. The last remaining primeval forests of the temperate forest biome are valuable study objects to investigate the effects of forest dynamics and management on forest structure and function as well as phytodiversity, which is not sufficiently understood. 2. Three pairs of Fagus sylvatica primeval and production forests in eastern Slovakia were selected for studying the...

Data from: Convergent evolution of the ladder-like ventral nerve cord in Annelida

Conrad Helm, Patrick Beckers, Thomas Bartolomaeus, Stephan H. Drukewitz, Ioannis Kourtesis, Anne Weigert, Günter Purschke, Katrine Worsaae, Torsten H. Struck & Christoph Bleidorn
Background: A median, segmented, annelid nerve cord has repeatedly been compared to the arthropod and vertebrate nerve cords and became the most used textbook representation of the annelid nervous system. Recent phylogenomic analyses, however, challenge the hypothesis that a subepidermal rope-ladder-like ventral nerve cord (VNC) composed of a paired serial chain of ganglia and somata-free connectives represents either a plesiomorphic or a typical condition in annelids. Results: Using a comparative approach by combining phylogenomic analyses...

Data from: Crop pests and predators exhibit inconsistent responses to surrounding landscape composition

Daniel S. Karp, Rebecca Chaplin-Kramer, Timothy D. Meehan, Emily A. Martin, Fabrice DeClerck, Heather Grab, Claudio Gratton, Lauren Hunt, Ashley E. Larsen, Alejandra Martínez-Salinas, Megan E. O’Rourke, Adrien Rusch, Katja Poveda, Mattias Jonsson, Jay A. Rosenheim, Nancy A. Schellhorn, Teja Tscharntke, Stephen D. Wratten, Wei Zhang, Aaron L. Iverson, Lynn S. Adler, Matthias Albrecht, Audrey Alignier, Gina M. Angelella, Muhammad Zubair Anjum … & Yi Zou
The idea that noncrop habitat enhances pest control and represents a win–win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are...

Data from: Two dimensions define the variation of fine root traits across plant communities under the joint influence of ecological succession and annual mowing

Amandine Erktan, Catherine Roumet, Diane Bouchet, Alexia Stokes, François Pailler & François Munoz
1. Quantifying the variation in community-level fine root (<2mm) traits along ecological gradients or in response to disturbances is essential to unravel the mechanisms of plant community assembly, but available surveys are scarce. Whether fine root traits covary along a one-dimensional economic spectrum, as previously shown for leaves, is highly debated. 2. We measured six fine root traits at the community-level along a 69-year succession, with or without annual mowing, offering a unique design of...

Data from: European ornamental garden flora as an invasion debt under climate change

Emily Haeuser, Wayne Dawson, Wilfried Thuiller, Stefan Dullinger, Svenja Block, Oliver Bossdorf, Marta Carboni, Luisa Conti, Iwona Dullinger, Franz Essl, Günther Klonner, Dietmar Moser, Tamara Muenkemueller, Madalin Parepa, Matthew V. Talluto, Holger Kreft, Jan Pergl, Petr Pyšek, Patrick Weigelt, Marten Winter, Martin Hermy, Sebastiaan Van Der Veken, Cristina Roquet & Mark Van Kleunen
1.Most naturalized and invasive alien plant species were originally introduced to regions for horticultural purposes. However, many regions now face an invasion debt from ornamental alien species, which have not yet naturalized. In this regard, climate change represents a threat as it may lower the barriers to naturalization for some ornamental alien species. Identifying those species is extremely important for anticipating impending invasions. 2.To identify predictors of naturalization, we modelled the effects of climate, nursery...

Data from: Applying generalised allometric regressions to predict live body mass of tropical and temperate arthropods

Esra H. Sohlström, Lucas Marian, Andrew D. Barnes, Noor F. Haneda, Stefan Scheu, Björn C. Rall, Ulrich Brose & Malte Jochum
1. The ecological implications of body size extend from the biology of individual organisms to ecosystem–level processes. Measuring body mass for high numbers of invertebrates can be logistically challenging, making length-mass regressions useful for predicting body mass with minimal effort. However, standardised sets of scaling relationships covering a large range in body length, taxonomic groups, and multiple geographical regions are scarce. 2. We collected 6212 arthropods from 19 higher-level taxa in both temperate and tropical...

Data from: Seasonal dynamics and changing sea level as determinants of the community and trophic structure of oribatid mites in a salt marsh of the Wadden Sea

Marlena Winter, Kristin Haynert, Stefan Scheu & Mark Maraun
Global change processes affect seasonal dynamics of salt marshes and thereby their plant and animal communities. However, these changes have been little investigated for microarthropod communities. We studied the effect of seasonality and changes in sea level on oribatid mites in the natural salt marsh and on artificial islands in the back-barrier environment of the island Spiekeroog (Wadden Sea, Germany). Three zones of the artificial islands were filled with transplanted sods from the lower salt...

Data from: Globally consistent impact of tropical cyclones on the structure of tropical and subtropical forests

Thomas Ibanez, Gunnar Keppel, Christophe Menkes, Thomas W. Gillespie, Matthieu Lengaigne, Morgan Mangeas, Gonzalo Rivas-Torres & Philippe Birnbaum
1. Tropical cyclones (TCs) are large-scale disturbances that regularly impact tropical forests. Although long-term impacts of TCs on forest structure have been proposed, a global test of the relationship between forest structure and TC frequency and intensity is lacking. We test on a pantropical scale whether TCs shape the structure of tropical and subtropical forests in the long-term. 2. We compiled forest structural features (stem density, basal area, mean canopy height and maximum tree size)...

Data from: Facultative bacterial endosymbionts shape parasitoid food webs in natural host populations: a correlative analysis

Zhengpei Ye, Ines M. G. Vollhardt, Nadia Parth, Oskar Rubbmark & Michael Traugott
1.Facultative bacterial endosymbionts can protect their aphid hosts from natural enemies such as hymenopteran parasitoids. As such, they have the capability to modulate interactions between aphids, parasitoids and hyperparasitoids. However, the magnitude of these effects in natural aphid populations and their associated parasitoid communities is currently unknown. Moreover, environmental factors such as plant fertilization and landscape complexity are known to affect aphid‐parasitoid interactions but it remains unclear how such environmental factors affect the interplay between...

Data from: Tropical rainforest conversion and land-use intensification reduce understory plant phylogenetic diversity

Yayan Wahyu Candra Kusuma, Katja Rembold, Sri S. Tjitrosoedirdjo & Holger Kreft
1. Conversion of rainforest into agricultural land affects multiple facets of tropical plant diversity. While the effects of tropical land use change and intensification on species diversity are comparatively well studied, the effects on phylogenetic diversity and structure of plant communities are largely unknown. Furthermore, it is not clear how the loss of native species and addition of alien species collectively affect phylogenetic diversity and structure. 2. We investigated the phylogenetic diversity and structure of...

Registration Year

  • 2018
    33

Resource Types

  • Dataset
    33

Affiliations

  • University of Göttingen
    33
  • German Center for Integrative Biodiversity Research
    4
  • University of Vienna
    3
  • Leipzig University
    3
  • Helmholtz Centre for Environmental Research
    2
  • University of Münster
    2
  • Institute of Landscape Ecology
    2
  • Lund University
    2
  • University of Freiburg
    2
  • German Primate Center
    2