69 Works

Positive and negative interactions jointly determine the structure of Müllerian mimetic communities

Thomas G. Aubier & Marianne Elias
Negative and positive ecological interactions have opposite effects on the structure of ecological communities, in particular in terms of ecological similarity among interacting species. In nature, species belonging to the same guild often interact in both negative and positive ways, yet the interplay between interactions of different kinds in intraguild community dynamics remains poorly understood. Müllerian mimetic communities are particularly suited for investigating this interplay because positive (mutualistic mimicry) and negative (competition for trophic resource...

CT and 3D Data from: A large Middle Devonian eubrachythoracid ‘placoderm’ (Arthrodira) jaw from northern Gondwana

Melina Jobbins, Martin Rücklin, Thodoris Argyriou & Christian Klug
Leptodontichthys ziregensis is a newly described eubrachythoracid arthrodire from the Middle Devonian of Morocco. Only the posterior superognathal is preserved, it possesses features which were, so far, seen in Late Devonian forms. The jaw bone presents two sets of teeth, one lateral and one posterior, with dentinous tissue, pulp cavities and vascular canals preserved. The CT scans provided here are the ones used for the study. The complete jaw data was used for the overall...

Genomic vulnerability to rapid climate warming in a tree species with a long generation time

Benjamin Dauphin, Christian Rellstab, Max Schmid, Stefan Zoller, Dirk Karger, Sabine Brodbeck, Frédéric Guillaume & Felix Gugerli
The ongoing increase in global temperature affects biodiversity, especially in mountain regions where climate change is exacerbated. As sessile, long-lived organisms, trees are especially challenged in terms of adapting to rapid climate change. Here, we show that low rates of allele frequency shifts in Swiss stone pine (Pinus cembra) occurring near the treeline result in high genomic vulnerability to future climate warming, presumably due to the species’ long generation time. Using exome sequencing data from...

Data from: Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): Insights from a new late Miocene dwarf sperm whale from the Pisco Formation

Aldo Benites-Palomino, Jorge Velez-Juarbe, Alberto Collareta, Diana Ochoa, Ali Altamirano, Matthieu Carré, Manuel J. Laime, Mario Urbina & Rodolfo Salas-Gismondi
Facial compartmentalization in the skull of extant pygmy whales (Kogiidae) is a unique feature among cetaceans that allows the housing of a wide array of organs responsible for echolocation. Recent fossil findings depict a remarkable disparity of the facial bone organization in Miocene kogiids, but the significance of such a rearrangement for the evolution of the clade has been barely explored. Here we describe Kogia danomurai sp. nov., a late Miocene (ca. 5.8 Ma) taxon...

Dataset marmoset Snowdrift

Alejandro Sanchez Amaro, Judith Burkart & Federico Rossano
Social primates constantly face situations in which their preferences collide and they need to engineer strategies to overcome conflicts of interest. Studies with chimpanzees have found that they use competitive strategies to overcome social dilemmas, maximizing their own benefits while minimizing the loss of rewards. However, little is known about how other primates that rely more on cooperation would overcome similar dilemmas. We therefore presented male-female pairs of common marmosets (cooperative breeders) with two experiments...

Bird abundance data for the period 2002-2014 from the French Breeding Bird Survey (STOC)

Vicente García-Navas & Wilfried Thuiller
Abundance data on breeding birds from the French Breeding Bird Survey (Suivi Temporel des Oiseaux Communs, STOC), for the period 2002-2014. The dataset comprises 7,115 bird communities. Only 107 common species were included in the study.

Data from: Regime shifts in an Early Triassic subtropical ecosystem

Elke Schneebeli
The Early Triassic was one of the most remarkable time intervals in Earth History. To begin with, life on Earth had to face one of the largest subaerial volcanic degassing, the Siberian Traps, followed by a plethora of accompanying environmental hazards with pronounced and repeated climatic changes. These changes not only led to repeated and, for several marine nektonic clades, intense extinction events but also to significant changes in terrestrial ecosystems. The Early Triassic terrestrial...

Data from: Genomic signatures of convergent adaptation to Alpine environments in three Brassicaceae species

Christian Rellstab, Stefan Zoller, Christian Sailer, Andrew Tedder, Felix Gugerli, Kentaro K. Shimizu, Rolf Holderegger, Alex Widmer & Martin C. Fischer
It has long been discussed to what extent related species develop similar genetic mechanisms to adapt to similar environments. Most studies documenting such convergence have either used different lineages within species or surveyed only a limited portion of the genome. Here, we investigated whether similar or different sets of orthologous genes were involved in genetic adaptation of natural populations of three related plant species to similar environmental gradients in the Alps. We used whole-genome pooled...

Data from: When to stay and when to leave? Proximate causes of dispersal in an endangered social carnivore

Dominik Behr, John McNutt, Arpat Ozgul & Gabriele Cozzi
1. Reliable estimates of birth, death, emigration, and immigration rates are fundamental to understanding and predicting the dynamics of wild populations and, consequently, inform appropriate management actions. However, when individuals disappear from a focal population, inference on their fate is often challenging. 2. Here we used 30 years of individual-based mark-recapture data from a population of free-ranging African wild dogs (Lycaon pictus) in Botswana and a suite of individual, social, and environmental predictors to investigate...

Data from: Cre-mediated, loxP independent sequential recombination of a tripartite transcriptional stop cassette allows for partial read-through transcription

Roland Wenger, Andreas M. Bapst, Sophie L. Dahl & Thomas Knöpfel
One of the widely used applications of the popular Cre-loxP method for targeted recombination is the permanent activation of marker genes, such as reporter genes or antibiotic resistance genes, by excision of a preceding transcriptional stop signal. The STOP cassette consists of three identical SV40-derived poly(A) signal repeats and is flanked by two loxP sites. We found that in addition to complete loxP-mediated recombination, limiting levels of the Cre recombinase also cause incomplete recombination of...

Data from: Phenotypic responses to temperature in the ciliate Tetrahymena thermophila

Vanessa Weber De Melo, Robert Lowe, Paul J. Hurd & Owen L. Petchey
Understanding the effects of temperature on ecological and evolutionary processes is crucial for generating future climate adaptation scenarios. Using experimental evolution, we evolved the model ciliate Tetrahymena thermophila in an initially novel high temperature environment for more than 35 generations, closely monitoring population dynamics and morphological changes. We observed initially long lag phases in the high temperature environment that over about 26 generations reduced to no lag phase, a strong reduction in cell size and...

Data from: The ghost of disturbance past: long-term effects of pulse disturbances on community biomass and composition

Claire Jacquet
Current global change is associated with an increase in disturbance frequency and intensity, with the potential to trigger population collapses and to cause permanent transitions to new ecosystem states. However, our understanding of ecosystem responses to disturbances is still incomplete. Specifically, there is a mismatch between the diversity of disturbance regimes experienced by ecosystems and the one-dimensional description of disturbances used in most studies on ecological stability. To fill this gap, we conducted a full...

R script: Species coexist more easily if reinforcement is based on habitat preferences than on species recognition

Daisuke Kyogoku & Hanna Kokko
1. Maladaptive hybridization selects for prezygotic isolation, a process known as reinforcement. Reinforcement reduces gene flow and contributes to the final stage of speciation. Ecologically, however, coexistence of the incipient species is difficult if they initially use identical resources. 2. Habitat segregation offers an alternative to species discrimination as a way to reduce gene flow: production of unfit hybrids is reduced if mate encounters become rare due to differing habitat choice. Using a modelling approach,...

Gene annotation of the Fhb1 locus on the assembly of bread wheat variety Norin 61

Dario Copetti
In the areas with wet climate of Eastern Asia, Fusarium head blight (FHB) is a major threat to bread wheat production. A source of FHB resistance (Fhb1) was identified in the Asian wheat germplasm and through classical breeding it was introduced in several varieties (https://doi.org/10.1186/s40066-017-0139-z ). The molecular determinant was identified as a deletion in an histidine-rich calcium-binding-protein gene on chromosome 3BS. (https://doi.org/10.1038/s41588-019-0426-7). The allele is common in many East Asia wheat varieties, but not...

Leaf size of woody dicots predicts ecosystem primary productivity

Yaoqi Li, Yaoqi Li, Peter Reich, Bernhard Schmid, Nawal Shrestha, Xiao Feng, Tong Lyv, Brian Maitner, Xiaoting Xu, Yichao Li, Dongting Zou, Zheng-Hong Tan, Xiangyan Su, Zhiyao Tang, Qinghua Guo, Xiaojuan Feng, Brian Enquist & Zhiheng Wang
A key challenge in ecology is to understand the relationships between organismal traits and ecosystem processes. Here, with a novel dataset of leaf length and width for 10,480 woody dicots in China and 2,374 in North America, we show that the variation in community mean leaf size is highly correlated with the variation in climate and ecosystem primary productivity, independent of plant life form. These relationships likely reflect how natural selection modifies leaf size across...

Data from: State-dependent decision-making by predators and its consequences for mimicry

Thomas G. Aubier & Thomas N. Sherratt
The mimicry of one species by another provides one of the most celebrated examples of evolution by natural selection. Edible Batesian mimics deceive predators into believing they may be defended, whereas defended Müllerian mimics have evolved a shared warning signal, more rapidly educating predators to avoid them. However, it may benefit hungry predators to attack defended prey, while the benefits of learning about unfamiliar prey depends on the future value of this information. Previous energetic...

Data from: Adaptive reduction of male gamete number in the selfing plant Arabidopsis thaliana

Takashi Tsuchimatsu, Hiroyuki Kakui, Misako Yamazaki, Cindy Marona, Hiroki Tsutsui, Afif Hedhly, Dazhe Meng, Yutaka Sato, Thomas Städler, Ueli Grossniklaus, Masahiro Kanaoka, Michael Lenhard, Magnus Nordborg & Kentaro Shimizu
The number of male gametes is critical for reproductive success and varies between and within species. The evolutionary reduction of the number of pollen grains encompassing the male gametes is widespread in selfing plants. Here, we employ genome-wide association study (GWAS) to identify underlying loci and to assess the molecular signatures of selection on pollen number-associated loci in the predominantly selfing plant Arabidopsis thaliana. Regions of strong association with pollen number are enriched for signatures...

Data from: Gene swamping alters evolution during range expansions in the protist Tetrahymena thermophila

Felix Moerman, Emanuel Fronhofer, Andreas Wagner & Florian Altermatt
At species’ range edges, individuals often face novel environmental conditions that may limit range expansion until populations adapt. The potential to adapt depends on genetic variation upon which selection can act. However, populations at species’ range edges are often genetically depauperated. One mechanism to increase genetic variation is to reshuffle existing variation through sex. During range expansions, sex can, however, act as a double-edged sword. The gene swamping hypothesis predicts that for populations expanding along...

Sexual size dimorphism is associated with reproductive life history trait differentiation in coexisting sepsid flies

Wolf Blanckenhorn, Julian Baur, Juan Pablo Busso, Athene Giesen, Natalia Gourgoulianni, Nicola Van Koppenhagen, Jeannine Roy, Martin Schäfer, Alexandra Wegmann & Patrick Rohner
Organismal life histories evolve as syndromes, resulting in correlated evolutionary differentiation of key traits that ultimately aid in discerning species. Reproductive success depends both on the absolute body size of an individual and its size relative to the opposite sex: sexual size dimorphism. In an attempt to further elucidate their coexistence and ecological diversification, we compared standard life history (first reproduction, clutch size, egg size) and associated reproductive trait differentiation of 15 widespread European sepsid...

Relative brain size is predicted by the intensity of intrasexual competition in frogs

Chun Lan Mai, Wen Bo Liao, Stefan Lüpold & Alexander Kotrschal
Competition over mates is a powerful force shaping trait evolution. For instance, better cognitive abilities may be beneficial in male−male competition and thus be selected for by intrasexual selection. Alternatively, investment in physical attributes favoring male performance in competition for mates may lower the resources available for brain development, and more intense male mate competition would coincide with smaller brains. To date, only indirect evidence for such relationships exists and most studies are heavily biased...

Data from: Plant biomass, not plant economics traits, determines responses of soil CO2 efflux to precipitation in the C4 grass Panicum virgatum

Robert Heckman, Albina Khasanova, Nicholas Johnson, Sören Weber, Jason Bonnette, Mike Aspinwall, Lara Reichman, Thomas Juenger, Philip Fay & Christine Hawkes
1. Plant responses to major environmental drivers like precipitation can influence important aspects of carbon (C) cycling like soil CO2 efflux (JCO2). These responses may be predicted by two independent classes of drivers: plant size—larger plants respire more and produce a larger quantity of labile C, and plant economics—plants possessing more acquisitive plant economics strategies (i.e., high metabolic rate and tissue nutrient content) produce higher-quality tissue that respires rapidly and decomposes quickly. 2. At two...

How pulse disturbances shape size-abundance pyramids

Claire Jacquet, Isabelle Gounand & Florian Altermatt
Ecological pyramids represent the distribution of abundance and biomass of living organisms across body-sizes. Our understanding of their expected shape relies on the assumption of invariant steady-state conditions. However, most of the world’s ecosystems experience disturbances that keep them far from such a steady state. Here, using the allometric scaling between population growth rate and body-size, we predict the response of size-abundance pyramids within a trophic guild to any combination of disturbance frequency and intensity...

African wild dog dispersal and implications for management

Gabriele Cozzi, Dominik M. Behr, Hugh S. Webster, Megan Claase, Caleb M. Bryce, John W. McNutt & Arpat Ozgul
Successful conservation of species that roam and disperse over large areas requires detailed understanding of their movement patterns and connectivity between subpopulations. But empirical information on movement, space use, and connectivity is lacking for many species, and data acquisition is often hindered when study animals cross international borders. The African wild dog (Lycaon pictus) exemplifies such species that require vast undisturbed areas to support viable, self‐sustaining populations. To study wild dog dispersal and investigate potential...

Differential ESR1 promoter Methylation in the peripheral blood of healthy middle-aged and older women- findings from the women 40+ healthy aging study

Elena Gardini, Gary G. Chen, Serena Fiacco, Laura Mernone, Jasmine Willi, Gustavo Turecki & Ulrike Ehlert
Background Estrogen receptor alpha (ERα) contributes to maintain biological processes preserving health during aging. DNA methylation changes of ERα gene (ESR1) were established as playing a direct role in the regulation of ERα levels. In this study, we hypothesized decreased DNA methylation of ESR1 associated with postmenopause, lower estradiol levels and increased age among healthy middle-aged and older women. Methods We assessed DNA methylation of ESR1 promoter region from dried blood spots and estradiol from...

Data from: Increasing dependence of lowland populations on mountain water resources

Daniel Viviroli, Matti Kummu, Michel Meybeck, Marko Kallio & Yoshihide Wada
Mountain areas provide disproportionally high runoff in many parts of the world, and here we quantify for the first time their importance for water resources and food production from the viewpoint of the lowland areas downstream. The dataset maps the degree to which lowland areas potentially depend on runoff contributions from mountain areas (39% of land mass) between the 1960s and the 2040s.

Registration Year

  • 2020
    69

Resource Types

  • Dataset
    69

Affiliations

  • University of Zurich
    69
  • Naturalis Biodiversity Center
    4
  • Swiss Federal Institute of Technology in Zurich
    4
  • University of Lisbon
    3
  • Institut des Sciences de l'Evolution de Montpellier
    2
  • University of Basel
    2
  • Swiss Federal Institute for Forest, Snow and Landscape Research
    2
  • University of Camerino
    1
  • Helmholtz Centre for Environmental Research
    1
  • Institute of Genetics and Molecular and Cellular Biology
    1