112 Works

re3data Stakeholder Survey and Workshop Report

Nina Leonie Weisweiler, Roland Bertelmann, Helena Cousijn, Kirsten Elger, Lea Maria Ferguson, Hans-Jürgen Goebelbecker, Maxi Kindling, Gabriele Kloska, Binh Nguyen Thanh, Heinz Pampel, Vivien Petras, Rouven Schabinger, Edeltraud Schnepf, Angelika Semrau, Dorothea Strecker, Margarita Trofimenko, Robert Ulrich, Arne Upmeier, Paul Vierkant, Yi Wang & Michael Witt
In order to channel and align the efforts within the COREF project, the Registry of Research Data Repositories – re3data is revising its conceptual service model according to the most important use cases of the various stakeholders working with re3data. Adopting and reflecting current developments in the research data landscape, the update of the service architecture in COREF is based on a bottom-up approach that addresses the results from a stakeholder survey and a stakeholder...

Phenomenology and Ecology: Art, Cities, and Cinema in the Pandemic

Alice Cortés & Matthew Crippen

Data from: Noise affects the shape of female preference functions for acoustic signals

Michael S. Reichert & Bernhard Ronacher
The shape of female mate preference functions influences the speed and direction of sexual signal evolution. However, the expression of female preferences is modulated by interactions between environmental conditions and the female's sensory processing system. Noise is an especially relevant environmental condition because it interferes directly with the neural processing of signals. Although noise is therefore likely a significant force in the evolution of communication systems, little is known about its effects on preference function...

Data from: Reproductive interference and fecundity affect competitive interactions of sibling species with low mating barriers: experimental and theoretical evidence

Marco Gebiola, Suzanne E. Kelly, Lennart Velten, Roman Zug, Peter Hammerstein, Massimo Giorgini & Martha S. Hunter
When allopatric species with incomplete prezygotic isolation come into secondary contact, the outcome of their interaction is not easily predicted. The parasitoid wasp Encarsia suzannae (iES), infected by Cardinium inducing cytoplasmic incompatibility (CI), and its sibling species E. gennaroi (EG), not infected by bacterial endosymbionts, may have diverged because of the complementary action of CI and asymmetric hybrid incompatibilities. Whereas postzygotic isolation is now complete due to sterility of F1 hybrid progeny, prezygotic isolation is...

Data from: Predictors of new remote cerebral microbleeds after intravenous thrombolysis for ischemic stroke

Tim Bastian Braemswig, Kersten Villringer, Guillaume Turc, Hebun Erdur, Jochen B. Fiebach, Heinrich J. Audebert, Matthias Endres, Christian H. Nolte & Jan F. Scheitz
Objective: To assess the frequency, associated factors, and underlying vasculopathy of new remote cerebral microbleeds (CMB), as well as the risk of concomitant hemorrhagic complications related to new CMBs, after intravenous thrombolysis (IVT) in acute stroke patients. Methods: We conducted an observational study using data from our local thrombolysis registry. We included consecutive stroke patients with MRI (3-Tesla)-based IVT and a follow-up MRI the next day between 2008–2017 (n=396). Only CMBs located outside of the...

Data from: Who directs group movement? Leader effort vs follower preference in stickleback fish of different personality

Shinnosuke Nakayama, Jennifer L. Harcourt, Rufus A. Johnstone & Andrea Manica
During collective movement, bolder individuals often emerge as leaders. Here, we investigate whether this reflects a greater propensity of bold individuals to initiate movement, or a preference for shy individuals to follow a bolder leader. We set up trios of stickleback fish comprising a focal individual who was either bold or shy, and one other individual of each personality. We then recorded the movements of all individuals in and out of cover in a foraging...

Data from: Engineering a plant community to deliver multiple ecosystem services

Jonathan Storkey, Thomas Döring, John Baddeley, Rosemary Collins, Stephen Roderick, Hannah Jones & Christine Watson
The sustainable delivery of multiple ecosystem services requires the management of functionally diverse biological communities. In an agricultural context, an emphasis on food production has often led to a loss of biodiversity to the detriment of other ecosystem services such as the maintenance of soil health and pest regulation. In scenarios where multiple species can be grown together, it may be possible to better balance environmental and agronomic services through the targeted selection of companion...

Data from: Encountering a bait is necessary but insufficient to explain individual variability in vulnerability to angling in two freshwater benthivorous fish in the wild

Christopher Thomas Monk & Robert Arlinghaus
Fish personality traits, such as swimming activity, or personality related emergent behavioural properties, such as space use, should affect encounter rates between fish and fishing gear. Increased encounters should in turn drive vulnerability to capture by passively operated fishing gears. However, empirical evidence documenting a relationship between activity-based behaviours and vulnerability to capture in the wild is limited. Using whole-lake acoustic telemetry, we first documented significant repeatabilities over several months of a suite of encounter...

Data from: Parallels between two geographically and ecologically disparate cave invasions by the same species, Asellus aquaticus (Isopoda, Crustacea)

Marjeta Konec, Simona Prevorčnik, Serban M. Sarbu, Rudi Verovnik & Peter Trontelj
Caves are long-known examples of evolutionary replications where similar morphologies (troglomorphies) evolve independently as the result of strong natural selection of the extreme environment. Recently, this paradigm has been challenged based on observations that troglomorphies are inconsistent across taxa and different subterranean habitats. We investigated the degree of replicated phenotypic change in two independent cave invasions by the freshwater isopod Asellus aquaticus; the first in a sulphidic aquifer in Romania, the second in a sinking...

Data from: Principal component analysis as an alternative treatment for morphometric characters: phylogeny of caseids as a case study

Neil Brocklehurst, Marco Romano & Jörg Fröbisch
In a recent study, the phylogeny of Caseidae (a herbivorous family of Palaeozoic synapsids belonging to the paraphyletic grade known as pelycosaurs) was analysed with a dataset employing more than three hundred continuous morphological characters in an effort to follow the principles of total evidence. Continuous characters are a source of great debate, with disagreements surrounding their suitability for and treatment in phylogenetic analysis. A number of shortcomings were identified in the handling of continuous...

Data from: Mapping extinction debt highlights conservation opportunities for birds and mammals in the South American Chaco

Asunción Semper-Pascual, Leandro Macchi, Francesco Maria Sabatini, Julieta Decarre, Matthias Baumann, Pedro G. Blendinger, Bibiana Gómez-Valencia, Matias E. Mastrangelo & Tobias Kuemmerle
1. Habitat loss is the primary cause of local extinctions. Yet, there is considerable uncertainty regarding how fast species respond to habitat loss, and how time-delayed responses vary in space. 2. We focused on the Argentine Dry Chaco (ca. 32 million ha), a global deforestation hotspot, and tested for time-delayed response of bird and mammal communities to landscape transformation. We quantified the magnitude of extinction debt by modelling contemporary species richness as a function of...

Data from: Divergence of cuticular hydrocarbons in two sympatric grasshopper species and the evolution of fatty acid synthases and elongases across insects

Jonas Finck, Emma L. Berdan, Frieder Mayer, Bernhard Ronacher & Sven Geiselhardt
Cuticular hydrocarbons (CHCs) play a major role in the evolution of reproductive isolation between insect species. The CHC profiles of two closely related sympatric grasshopper species, Chorthippus biguttulus and C. mollis, differ mainly in the position of the first methyl group in major methyl-branched CHCs. The position of methyl branches is determined either by a fatty acid synthase (FAS) or by elongases. Both protein families showed an expansion in insects. Interestingly, the FAS family showed...

High spatial resolution mapping identifies habitat characteristics of the invasive vine Antigonon leptopus on St. Eustatius (Lesser Antilles)

Elizabeth Haber, Maria Santos, Pedro Leitão, Marcel Schwieder, Pieter Ketner, Joris Ernst, Max Rietkerk, Martin Wassen & Maarten Eppinga
On the Caribbean island of St. Eustatius, Coralita (Antigonon leptopus) is an aggressive invasive vine posing major biodiversity conservation concerns. The generation of distribution maps can address these conservation concerns by helping to elucidate the drivers of invasion. We test the use of support vector machines to map the distribution of Coralita on St. Eustatius at high spatial resolution and use this map to identify potential landscape and geomorphological factors associated with Coralita presence. This...

Life-cycle complexity in helminths: What are the benefits?

Daniel Benesh, Geoff A. Parker & James C Chubb
Parasitic worms (i.e. helminths) commonly infect multiple hosts in succession. With every transmission step, they risk not infecting the next host and thus dying before reproducing. Given this risk, what are the benefits of complex life cycles? Using a dataset for 973 species of trophically transmitted acanthocephalans, cestodes, and nematodes, we tested whether hosts at the start of a life cycle increase transmission and whether hosts at the end of a life cycle enable growth...

The inner mechanics of rhodopsin guanylyl cyclase during cGMP-formation revealed by real-time FTIR spectroscopy

Paul Fischer, Shatanik Mukherjee, Enrico Peter, Matthias Broser, Franz Bartl & Peter Hegemann
Enzymerhodopsins represent a recently discovered class of rhodopsins which includes histidine kinase rhodopsin, rhodopsin phosphodiesterases and rhodopsin guanylyl cyclases (RGCs). The regulatory influence of the rhodopsin domain on the enzyme activity is only partially understood and holds the key for a deeper understanding of intra-molecular signaling pathways. Here we present a UV-Vis and FTIR study about the light-induced dynamics of a RGC from the fungus Catenaria anguillulae, which provides insights into the catalytic process. After...

Comparative analysis of helminth infectivity: growth in intermediate hosts increases establishment rates in the next host

Daniel Benesh, Spencer Froelick & Laura Gramolini
Parasitic worms (i.e. helminths) commonly infect multiple hosts in succession before reproducing. At each life cycle step, worms may fail to infect the next host, and this risk accumulates as life cycles include more successive hosts. Risk accumulation can be minimized by having high establishment success in the next host, but comparisons of establishment probabilities across parasite life stages are lacking. We compiled recovery rates (i.e. the proportion of parasites recovered from an administered dose)...

Quantifying the relationship between prey density, livestock and illegal killing of leopards

Mahmood Soofi, Ali Turk Qashqaei, Marzieh Mousavi, Ehsan Hadipour, Marc Filla, Bahram Hasanzadeh Kiabi, Benjamin Bleyhl, Arash Ghoddousi, Niko Balkenhol, Andrew Royle, Chris R. Pavey, Igor Khorozyan & Matthias Waltert
Many large mammalian carnivores are facing population declines due to illegal killing (e.g., shooting) and habitat modification (e.g., livestock farming). Illegal killing occurs cryptically and hence is difficult to detect. However, reducing illegal killing requires a solid understanding of its magnitude and underlying drivers, while accounting for the imperfect detection of illegal killing events. Despite the importance of illegal killing of large carnivores in comparison with other causes of mortality, its relationship with potential drivers...

Sleep as Action? World Alienation, Distance, and Loneliness in Ottessa Moshfegh's My Year of Rest and Relaxation

Marlene Dirschauer
This article explores how Ottessa Moshfegh's novel My Year of Rest and Relaxation portrays the relationship between the self and the world against the backdrop of the 9/11 terror attacks. It shows that distance emerges as the central component of the narrator's world alienation, which also crucially informed Hannah Arendt's critique of modernity as developed in her seminal work, The Human Condition. By revisiting some of the philosopher's key ideas in light of more recent...

Data from: Consistent size-independent harvest selection on fish body shape in two recreationally exploited marine species

Josep Alós, Miquel Palmer, Marta Linde-Medina & Robert Arlinghaus
Harvesting wild animals may exert size-independent selection pressures on a range of morphological, life history, and behavioral traits. Most work so far has focused on selection pressures on life history traits and body size as morphological trait. We studied here how recreational fishing selects for morphological traits related to body shape, which may correlate with underlying swimming behavior. Using landmark-based geometric morphometrics, we found consistent recreational fishing-induced selection pressures on body shape in two recreationally...

Data from: Early evolutionary trends in ammonoid embryonic development

Kenneth De Baets, Christian Klug, Dieter Korn & Neil H. Landman
During the Devonian Nekton Revolution, ammonoids show a progressive coiling of their shell just like many other pelagic mollusk groups. These now extinct, externally shelled cephalopods derived from bactritoid cephalopods with a straight shell in the Early Devonian. During the Devonian, evolutionary trends toward tighter coiling and a size reduction occurred in ammonoid embryonic shells. In at least three lineages, descendants with a closed umbilicus evolved convergently from forms with an opening in the first...

Data from: Assessing the relationship between illegal hunting of ungulates, wild prey occurrence and livestock depredation rate by large carnivores

Mahmood Soofi, Arash Ghoddousi, Thorsten Zeppenfeld, Shirko Shokri, Mobin Soufi, Lukas Egli, Abbas Jafari, Mohsen Ahmadpour, Ali Qashqaei, Taher Ghadirian, Marc Filla, Bahram Kiabi, Niko Balkenhol, Matthias Waltert & Igor Khorozyan
1. Illegal hunting of ungulates can reduce the prey base of carnivores, which can increase human-carnivore conflict (HCC) through livestock depredation. However, the relationship between ungulate poaching, wild prey abundance and livestock depredation has rarely been empirically studied. 2. We surveyed 18 sites across the Hyrcanian forest in northern Iran; a global biodiversity hotspot under pressure of illegal hunting of ungulates, prey depletion, livestock grazing and HCC. We conducted three field surveys across 1204 km...

Data from: What are the prospects for citizen science in agriculture? Evidence from three continents on motivation and mobile telephone use of resource-poor farmers

Eskender Beza, Jonathan Steinke, Jacob Van Etten, Pytrik Reidsma, Carlo Fadda, Sarika Mittra, Prem Mathur & Lammert Kooistra
As the sustainability of agricultural citizen science projects depends on volunteer farmers who contribute their time, energy and skills, understanding their motivation is important to attract and retain participants in citizen science projects. The objectives of this study were to assess 1) farmers' motivations to participate as citizen scientists and 2) farmers' mobile telephone usage. Building on motivational factors identified from previous citizen science studies, a questionnaire based methodology was developed which allowed the analysis...

Data from: Multivariate female preference tests reveal latent perceptual biases

David A. Gray, Eileen Gabel, Thomas Blankers & R. Matthias Hennig
The question of why males of many species produce elaborate mating displays has now been largely resolved: females prefer to mate with males that produce such displays. However, the question of why females prefer such displays has been controversial, with an emerging consensus that such displays often provide information to females about the direct fitness benefits that males provide to females and/or the indirect fitness benefits provided to offspring. Alternative explanations, such as production of...

Data from: Conservation of multivariate female preference functions and preference mechanisms in three species of trilling field crickets

Thomas Blankers, R. Matthias Hennig & David A. Gray
Divergence in mate recognition systems among closely related species is an important contributor to assortative mating and reproductive isolation. Here we examine divergence in male song traits and female preference functions in three cricket species with songs consisting of long trills. The shape of female preference functions appears to be mostly conserved across species and follows the predictions from a recent model for song recognition. Multivariate preference profiles, combining the pulse and trill parameters, demonstrate...

Data from: Operating length and velocity of human M. vastus lateralis fascicles during vertical jumping

Maria Elissavet Nikolaidou, Robert Marzilger, Sebastian Bohm, Falk Mersmann & Adamantios Arampatzis
Humans achieve greater jump height during a counter-movement jump (CMJ) than in a squat jump (SJ). However, the crucial difference is the mean mechanical power output during the propulsion phase, which could be determined by intrinsic neuro-muscular mechanisms for power production. We measured M. vastus lateralis (VL) fascicle length changes and activation patterns and assessed the force–length, force–velocity and power–velocity potentials during the jumps. Compared with the SJ, the VL fascicles operated on a more...

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  • Humboldt University of Berlin
  • Humboldt-Universität zu Berlin
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
  • Museum für Naturkunde
  • Freie Universität Berlin
  • University of Greifswald
  • University of Wisconsin-Madison
  • University of Zurich
  • Berlin Brandenburg Institute of Advanced Biodiversity Research
  • University of Bonn