18 Works

Data from: Impacts of species richness on productivity in a large-scale subtropical forest experiment

Yuanyuan Huang, Yuxin Chen, Nadia Castro-Izaguirre, Martin Baruffol, Matteo Brezzi, Anne Lang, Ying Li, Werner Härdtle, Werner Von Oheimb, Xuefeu Yang, Xiaojuan Liu, Kequan Pei, Sabine Both, Bo Yang, David Eichenberg, Thorsten Assmann, Jürgen Bauhus, Thorsten Behrens, François Buscot, Xiao-Yong Chen, Douglas Chester, Bing-Yang Ding, Walter Durka, Alexandra Erfmeier, Jingyun Fang … & Bernhard Schmid
Biodiversity experiments have shown that species loss reduces ecosystem functioning in grassland. To test whether this result can be extrapolated to forests, the main contributors to terrestrial primary productivity, requires large-scale experiments. We manipulated tree species richness by planting more than 150,000 trees in plots with 1 to 16 species. Simulating multiple extinction scenarios, we found that richness strongly increased stand-level productivity. After 8 years, 16-species mixtures had accumulated over twice the amount of carbon...

Data from: Effects of admixture in native and invasive populations of Lythrum salicaria

Jun Shi, Mirka Macel, Katja Tielbörger, Koen J.F. Verhoeven & Koen J. F. Verhoeven
Intraspecific hybridization between diverged populations can enhance fitness via various genetic mechanisms. The benefits of such admixture have been proposed to be particularly relevant in biological invasions, when invasive populations originating from different source populations are found sympatrically. However, it remains poorly understood if admixture is an important contributor to plant invasive success and how admixture effects compare between invasive and native ranges. Here, we used experimental crosses in Lythrum salicaria, a species with well-established...

Data from: Evaluating the role of Pleistocene refugia, rivers and environmental variation in the diversification of central African duikers (genera Cephalophus and Philantomba)

Stephan Ntie, Anne R. Davis, Katrin Hils, Patrick Mickala, Henri A. Thomassen, Katy Morgan, Hadrien Vanthomme, Mary K. Gonder & Nicola M. Anthony
Background: This study aims to assess the role that Pleistocene refugia, rivers and local habitat conditions may have played in the evolutionary diversification of three central African duiker species (Cephalophus dorsalis, C. callipygus and Philantomba monticola). Genetic data from geo-referenced feces were collected from a wide range of sites across Central Africa. Historical patterns of population genetic structure were assessed using a ~ 650 bp fragment of the mitochondrial control region and contemporary patterns 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: Costs and benefits of admixture between foreign genotypes and local populations in the field

Jun Shi, Jasmin Joshi, Katja Tielborger, Koen J. F. Verhoeven & Mirka Macel
Admixture is the hybridization between populations within one species. It can increase plant fitness and population viability by alleviating inbreeding depression and increasing genetic diversity. However, populations are often adapted to their local environments and admixture with distant populations could break down local adaptation by diluting the locally adapted genomes. Thus, admixed genotypes might be selected against and be outcompeted by locally adapted genotypes in the local environments. To investigate the costs and benefits of...

Data from: Daytime eyeshine contributes to pupil camouflage in a cryptobenthic marine fish

Matteo Santon, Pierre-Paul Bitton, Ulrike K. Harant & Nico K. Michiels
Ocular reflectors enhance eye sensitivity in dim light, but can produce reflected eyeshine when illuminated. Some fish can occlude their reflectors during the day. The opposite is observed in cryptic sit-and-wait predators such as scorpionfish and toadfish, where reflectors are occluded at night and exposed during the day. This results in daytime eyeshine, proposed to enhance pupil camouflage by reducing the contrast between the otherwise dark pupil and the surrounding tissue. In this study, we...

Data from: Controlled iris radiance in a diurnal fish looking at prey

Nico K. Michiels, Victoria C. Seeburger, Nadine Kalb, Melissa G. Meadows, Nils Anthes, Amalia A. Mailli & Colin B. Jack
Active sensing using light, or active photolocation, is only known from deep sea and nocturnal fish with chemiluminescent "search" lights. Bright irides in diurnal fish species have recently been proposed as a potential analogue. Here, we contribute to this discussion by testing whether iris radiance is actively modulated. The focus is on behaviourally controlled iris reflections, called "ocular sparks". The triplefin Tripterygion delaisi can alternate between red and blue ocular sparks, allowing us to test...

Data from: Rapid evolution in native plants cultivated for ecological restoration: not a general pattern

Rouven Nagel, Walter Durka, Oliver Bossdorf & Anna Bucharova
The growing number of restoration projects worldwide increases the demand for seed material of native species. To meet this demand, seeds are often produced through large‐scale cultivation on specialized farms, using wild‐collected seeds as the original sources. However, during cultivation plants experience novel environmental conditions compared to those in natural populations, and there is a danger that the plants in cultivation are subject to unintended selection and lose their adaptation to natural habitats. Although the...

Data from: Faster processing of moving compared to flashed bars in awake macaque V1 provides a neural correlate of the flash lag illusion

Manivannan Subramaniyan, Alexander S. Ecker, Saumil S. Patel, R. James Cotton, Matthias Bethge, Xaq Pitkow, Philipp Berens & Andreas S. Tolias
When the brain has determined the position of a moving object, due to anatomical and processing delays, the object will have already moved to a new location. Given the statistical regularities present in natural motion, the brain may have acquired compensatory mechanisms to minimize the mismatch between the perceived and the real position of moving objects. A well-known visual illusion — the flash lag effect — points towards such a possibility. Although many psychophysical models...

Data from: TAPBPR mediates peptide dissociation from MHC class I using a leucine lever

F. Tudor Ilca, Andreas Neerincx, Clemens Hermann, Ana Marcu, Stefan Stevanović, Janet E. Deane & Louise H. Boyle
Tapasin and TAPBPR are known to perform peptide editing on major histocompatibility complex class I (MHC I) molecules, however, the precise molecular mechanism(s) involved in this process remain largely enigmatic. Here, using immunopeptidomics in combination with novel cell-based assays that assess TAPBPR-mediate peptide exchange, we reveal a critical role for the K22-D35 loop of TAPBPR in mediating peptide exchange on MHC I. We identify a specific leucine within this loop that enables TAPBPR to facilitate...

Data from: Distance and size matters: a comparison of six wildlife camera traps and their usefulness for wild birds

Christoph Randler & Nadine Kalb
Camera traps are increasingly used in ecological research. However, tests of their performance are scarce. It is already known from previous work that camera traps frequently fail to capture visits by animals. This can lead to a misinterpretation of ecological results such as density estimates or predation events. While previous work is mainly based on mammals, for birds, no data about if and how camera traps can be successfully used to estimate species diversity or...

Data from: Archaeopedological analysis of colluvial deposits in favourable and unfavourable areas: reconstruction of land use dynamics in SW Germany

Jessica Henkner, Jan Ahlrichs, Sean Downey, Markus Fuchs, Bruce James, Andrea Junge, Thomas Knopf, Thomas Scholten & Peter Kühn
Colluvial deposits, as the correlate sediments of human induced soil erosion, depict an excellent archive of land use and landscape history as representatives of human-environment interactions. This study establishes a chronostratigraphy of colluvial deposits and reconstructs past land use dynamics in the Swabian Jura, the Baar and the Black Forest in SW Germany. In the agriculturally favourable Baar area multiple main phases of colluvial deposition, and thus intensified land use, can be identified from the...

Data from: Clinical spectrum of STX1B-related epileptic disorders

Stefan Wolking, Patrick May, Davide Mei, Rikke S. Møller, Simona Balestrini, Katherine L. Helbig, Cecilia Desmettre Altuzarra, Nicolas Chatron, Charu Kaiwar, Katharina Stoehr, Peter Widdess-Walsh, Bryce A. Mendelsohn, Adam Numis, Maria R. Cilio, Wim Van Paesschen, Lene L. Svendsen, Stephanie Oates, Elaine Hughes, Sushma Goyal, Kathleen Brown, Margarita Sifuentes Saenz, Thomas Dorn, Hiltrud Muhle, Alistair T. Pagnamenta, Dimitris V. Vavoulis … & Julian Schubert
Objective: The aim of this study was to expand the spectrum of epilepsy syndromes related to STX1B, encoding the presynaptic protein syntaxin-1B, and establish genotype-phenotype correlations by identifying further disease-related variants. Methods: We used next generation sequencing in the framework of research projects and diagnostic testing. Clinical data and EEGs were reviewed, including already published cases. To estimate the pathogenicity of the variants, we used established and newly developed in silico prediction tools. Results: We...

Data from: Structural design of the minute clypeasteroid echinoid Echinocyamus pusillus

Tobias B. Grun & James H. Nebelsick
The clypeasteroid echinoid skeleton is a multi-plated, light-weight shell construction produced by biomineralization processes. In shell constructions, joints between individual elements are considered as weak points, yet, these echinoid skeleton shows an extensive preservation potential in both Recent and fossil environments. The remarkable strength of the test is achieved by skeletal reinforcement structures and their constructional layouts. Micro-computed tomography and scanning electron microscopy are used for micro-structural and volumetric analyses of the echinoid’s skeleton. It...

Data from: Tree species richness increases ecosystem carbon storage in subtropical forests

Xiaojuan Liu, Stefan Trogisch, Jin-Sheng He, Pascal A. Niklaus, Helge Bruelheide, Zhiyao Tang, Alexandra Erfmeier, Michael Scherer-Lorenzen, Katherina A. Pietsch, Bo Yang, Peter Kühn, Thomas Scholten, Yuanyuan Huang, Chao Wang, Michael Staab, Katrin N. Leppert, Christian Wirth, Bernhard Schmid & Keping Ma
Forest ecosystems are an integral component of the global carbon cycle as they take up and release large amounts of C in short time (C flux) or accumulate it over longer time (C stock). However, there remains uncertainty about whether and in which direction C fluxes and in particular C stocks may differ between forests of high vs. low species richness. Based on a comprehensive dataset derived from field-based measurements, we tested the effect of...

Data from: Learning from the past: a reverberation of past errors in the cerebellar climbing fiber signal

Marc Junker, Dominik Endres, Zong Peng Sun, Peter W. Dicke, Martin Giese & Peter Thier
The cerebellum allows us to rapidly adjust motor behavior to the needs of the situation. It is commonly assumed that cerebellum-based motor learning is guided by the difference between the desired and the actual behavior, i.e., by error information. Not only immediate but also future behavior will benefit from an error because it induces lasting changes of parallel fiber synapses on Purkinje cells (PCs), whose output mediates the behavioral adjustments. Olivary climbing fibers, likewise connecting...

Data from: Zebrafish differentially process colour across visual space to match natural scenes

Maxime J. Y. Zimmermann, Noora E. Nevala, Takeshi Yoshimatsu, Daniel Osorio, Dan-Eric Nilsson, Philipp Berens, Tom Baden & Maxime J.Y. Zimmermann
Animal eyes have evolved to process behaviorally important visual information, but how retinas deal with statistical asymmetries in visual space remains poorly understood. Using hyperspectral imaging in the field, in vivo 2-photon imaging of retinal neurons, and anatomy, here we show that larval zebrafish use a highly anisotropic retina to asymmetrically survey their natural visual world. First, different neurons dominate different parts of the eye and are linked to a systematic shift in inner retinal...

Data from: Interspecific competition alters leaf stoichiometry in 20 grassland species

Jordan Guiz, Anne Ebeling, Nico Eisenhauer, Nina Hacker, Lionel Hertzog, Yvonne Oelmann, Christiane Roscher, Cameron Wagg & Helmut Hillebrand
The extensive use of traits in ecological studies over the last few decades to predict community functions has revealed that plant traits are plastic and respond to various environmental factors. These plant traits are assumed to predict how plants compete and capture resources. Variation in stoichiometric ratios both within and across species reflects resource capture dynamics under competition. However, the impact of local plant diversity on species-specific stoichiometry remains poorly studied. Here, we analyze how...

Registration Year

  • 2018
    18

Resource Types

  • Dataset
    18

Affiliations

  • University of Tübingen
    18
  • Helmholtz Centre for Environmental Research
    3
  • German Center for Integrative Biodiversity Research
    3
  • University of Freiburg
    3
  • University of Zurich
    3
  • Jingdezhen University
    2
  • Radboud University Nijmegen
    2
  • Nederlands Instituut voor Ecologie
    2
  • French National Centre for Scientific Research
    2
  • Peking University
    2