74 Works

Data from: A general model for estimating macroevolutionary landscapes

Florian C. Boucher, Vincent Démery, Elena Conti, Luke J. Harmon & Josef Uyeda
The evolution of quantitative characters over long timescales is often studied using stochastic diffusion models. The current toolbox available to students of macroevolution is however limited to two main models: Brownian motion and the Ornstein-Uhlenbeck process, plus some of their extensions. Here we present a very general model for inferring the dynamics of quantitative characters evolving under both random diffusion and deterministic forces of any possible shape and strength, which can accommodate interesting evolutionary scenarios...

Data from: The evolution of male-biased sexual size dimorphism is associated with increased body size plasticity in males

Patrick T. Rohner, Tiit Teder, Toomas Esperk, Stefan Lüpold & Wolf U. Blanckenhorn
1.Sexual size dimorphism (SSD) can vary drastically across environments, demonstrating pronounced sex-specific plasticity. In insects, females are usually the larger and more plastic sex. However, the shortage of taxa with male-biased SSD hampers the assessment of whether the greater plasticity in females is driven by selection on size or represents an effect of the female reproductive role. Here we specifically address the role of sex-specific plasticity of body size in the evolution of SSD reversals...

Data from: No evidence of inbreeding depression in sperm performance traits in wild song sparrows

Sylvain Losdat, Ryan R. Germain, Pirmin Nietlisbach, Peter Arcese & Jane M. Reid
Inbreeding is widely hypothesized to shape mating systems and population persistence, but such effects will depend on which traits show inbreeding depression. Population and evolutionary consequences could be substantial if inbreeding decreases sperm performance and hence decreases male fertilisation success and female fertility. However, the magnitude of inbreeding depression in sperm performance traits has rarely been estimated in wild populations experiencing natural variation in inbreeding. Further, the hypothesis that inbreeding could increase within-ejaculate variation in...

Data from: Decision making for mitigating wildlife diseases: from theory to practice for an emerging fungal pathogen of amphibians

Stefano Canessa, Claudio Bozzuto, Evan H. Campbell Grant, Sam S. Cruickshank, Matthew C. Fisher, Jacob C. Koella, Stefan Lötters, An Martel, Frank Pasmans, Benjamin C. Scheele, Annemarieke Spitzen-Van Der Sluijs, Sebastian Steinfartz, Benedikt R. Schmidt & Ben C. Scheele
1.Conservation science can be most effective in its decision-support role when seeking answers to clearly formulated questions of direct management relevance. Emerging wildlife diseases, a driver of global biodiversity loss, illustrate the challenges of performing this role: in spite of considerable research, successful disease mitigation is uncommon. Decision analysis is increasingly advocated to guide mitigation planning, but its application remains rare. 2.Using an integral projection model, we explored potential mitigation actions for avoiding population declines...

Data from: Human visual exploration reduces uncertainty about the sensed world

M. Berk Mirza, Rick A. Adams, Christoph Mathys & Karl J. Friston
In previous papers, we introduced a normative scheme for scene construction and epistemic (visual) searches based upon active inference. This scheme provides a principled account of how people decide where to look, when categorising a visual scene based on its contents. In this paper, we use active inference to explain the visual searches of normal human subjects; enabling us to answer some key questions about visual foraging and salience attribution. First, we asked whether there...

Data from: Experimentally simulating warmer and wetter climate additively improves rangeland quality on the Tibetan Plateau

Wei Xu, Mengyao Zhu, Zhenhua Zhang, Zhiyuan Ma, Huiying Liu, Litong Chen, Guangming Cao, Xinquan Zhao, Bernhard Schmid & Jin-Sheng He
1. The vast expanses of rangeland on the Tibetan Plateau, which support the livelihood of ~9.8 million local inhabitants, have experienced rapid climate warming over the past 50 years. At the same time, precipitation has increased in large parts of the Plateau but decreased in other parts, particularly in the northwest. These trends are predicted to continue into the future. However, their potential effects on rangeland quality remain unclear. 2. We conducted a two-factor field...

Data from: Group cohesion in foraging meerkats: follow the moving ‘vocal hot spot’

Gabriella E.C. Gall, Marta B. Manser & Gabriella E. C. Gall
Group coordination, when ‘on the move’ or when visibility is low, is a challenge faced by many social living animals. While some animals manage to maintain cohesion solely through visual contact, the mechanism of group cohesion through other modes of communication, a necessity when visual contact is reduced, is not yet understood. Meerkats (Suricata suricatta), a small, social carnivore, forage as a cohesive group while moving continuously. While foraging, they frequently emit ‘close calls’, soft...

Data from: Spatially heterogeneous selection in nature favors phenotypic plasticity in anuran larvae

Josh Van Buskirk
Theory holds that adaptive phenotypic plasticity evolves under spatial or temporal variation in natural selection. I tested this prediction in a classic system of predator-induced plasticity: frog tadpoles (Rana temporaria) reacting to predaceous aquatic insects. An outdoor mesocosm experiment manipulating exposure to Aeshna dragonfly larvae revealed plasticity in most characters: growth, development, behavior, and external morphology. I measured selection by placing 1927 tadpoles into enclosures within natural ponds; photographs permitted identification of the survivors 6–9...

Data from: Fossils matter: improved estimates of divergence times in Pinus reveal older diversification

Bianca Saladin, Andrew B. Leslie, Rafael O. Wueest, Glenn Litsios, Elena Conti, Nicolas Salamin & Niklaus E. Zimmermann
Background: The taxonomy of pines (genus Pinus) is widely accepted and a robust gene tree based on entire plastome sequences exists. However, there is a large discrepancy in estimated divergence times of major pine clades among existing studies, mainly due to differences in fossil placement and dating methods used. We currently lack a dated molecular phylogeny that makes use of the rich pine fossil record, and this study is the first to estimate the divergence...

Data from: Population density and structure drive differential investment in pre- and postmating sexual traits in frogs

Stefan Lüpold, Long Jin & Wen Bo Liao
Sexual selection theory predicts a trade-off between premating (ornaments and armaments) and postmating (testes and ejaculates) sexual traits, assuming that growing and maintaining these traits is costly and that total reproductive investments are limited. The number of males in competition, the reproductive gains from investing in premating sexual traits, and the level of sperm competition are all predicted to influence how males allocate their finite resources to these traits. Yet, empirical examination of these predictions...

Data from: The evolution of costly mate choice against segregation distorters

Andri Manser, Anna K. Lindholm, Franjo J. Weissing & Franz J. Weissing
The evolution of female preference for male genetic quality remains a controversial topic in sexual selection research. One well-known problem, known as the lek paradox, lies in understanding how variation in genetic quality is maintained in spite of natural selection and sexual selection against low-quality alleles. Here, we theoretically investigate a scenario where females pay a direct fitness cost to avoid males carrying an autosomal segregation distorter. We show that preference evolution is greatly facilitated...

Data from: Heterozygosity-fitness correlation at the major histocompatibility complex despite low variation in Alpine ibex (Capra ibex)

Alice Brambilla, Lukas Keller, Bruno Bassano & Christine Grossen
Crucial for the long-term survival of wild populations is their ability to fight diseases. Disease outbreaks can lead to severe population size reductions, which makes endangered and reintroduced species especially vulnerable. In vertebrates, the major histocompatibility complex (MHC) plays an important role in determining the immune response. Species which went through severe bottlenecks, often show very low levels of genetic diversity at the MHC. Due to the known link between the MHC and immune response,...

Data from: Interactive life-history traits predict sensitivity of plants and animals to temporal autocorrelation

Maria Paniw, Arpat Ozgul & Roberto Salguero-Gomez
Temporal autocorrelation in demographic processes is an important aspect of population dynamics, but a comprehensive examination of its effects on different life-history strategies is lacking. We use matrix populations models from 454 plant and animal populations to simulate stochastic population growth rates (log λs) under different temporal autocorrelations in demographic rates, using simulated and observed covariation among rates. We then test for differences in sensitivities, or changes, of log λs to changes in autocorrelation among...

Data from: Intraspecific variation in cephalopod conchs changes during ontogeny: perspectives from three-dimensional morphometry of Nautilus pompilius

Amane Tajika, Naoki Morimoto, Ryoji Wani & Christian Klug
Intraspecific variation of organisms is of great importance to correctly carry out taxonomic work, which is a prerequisite for important disciplines in paleontology such as community paleoecology, biostratigraphy, and biogeography. However, intraspecific variation is rarely studied in ectocochleate cephalopods (ammonoids and nautiloids), in which an excessive number of taxa were established during the past centuries. Since intraspecific variation of fossilized organisms suffers from various biases (time averaging and taphonomy), an extant example is needed for...

Data from: Enhancing plant diversity in agricultural landscapes promotes both rare bees and dominant crop-pollinating bees through complementary increase in key floral resources

Louis Sutter, Philippe Jeanneret, Agustín M. Bartual, Gionata Bocci & Matthias Albrecht
1. Enhancing key floral resources is essential to effectively mitigate the loss of pollinator diversity and associated provisioning of pollination functions in agro-ecosystems. However, effective floral provisioning measures may diverge among different pollinator conservation targets, such as the conservation of rare species or the promotion of economically important crop pollinators. We examined to what extent such diverging conservation goals could be reconciled. 2. We analysed plant–bee visitation networks of 64 herbaceous semi-natural habitats representing a...

Data from: A reassessment of explanations for discordant introgressions of mitochondrial and nuclear genomes

Timothée Bonnet, Raphaël Leblois, Francois Rousset & Pierre-André Crochet
Hybridization is increasingly recognized as a significant evolutionary process, in particular because it can lead to introgression of genes from one species to another. A striking pattern of discordance in the amount of introgression between mitochondrial and nuclear markers exists such that substantial mitochondrial introgression is often found in combination with no or little nuclear introgression. Multiple mechanisms have been proposed to explain this discordance, including positive selection for introgressing mitochondrial variants, several types of...

Data from: Differentiation of movement behavior in an adaptively diverging salamander population

Ralf Hendrix, Benedikt R. Schmidt, Michael Schaub, E. Tobias Krause & Sebastian Steinfartz
Dispersal is considered to be a species-specific trait, but intraspecific variation can be high. However, when and how this complex trait starts to differentiate during the divergence of species/lineages is unknown. Here, we studied the differentiation of movement behavior in a large salamander (Salamandra salamandra) population, in which individual adaptations to different habitat conditions drive the genetic divergence of this population into two subpopulations. In this system, salamanders have adapted to the deposition and development...

Data from: Frequent and parallel habitat transitions as driver of unbounded radiations in the Cape flora

Yanis Bouchenak-Khelladi & H. Peter Linder
The enormous species richness in the Cape Floristic Region (CFR) of Southern Africa is the result of numerous radiations, but the temporal progression and possible mechanisms of these radiations are still poorly understood. Here, we explore the macroevolutionary dynamics of the Restionaceae, that include 340 species which are found in all vegetation types in the Cape flora and are ecologically dominant in fynbos. Using an almost complete (i.e. 98%) species-level time calibrated phylogeny and models...

Data from: Linking diversity, synchrony and stability in soil microbial communities

Cameron Wagg, Jan-Hendrik Dudenhöffer, Franco Widmer, Marcel G.A. Van Der Heijden & Marcel G. A. Van Der Heijden
1. It is becoming well established that plant diversity is instrumental in stabilizing the temporal functioning of ecosystems through population dynamics and the so-called insurance or portfolio effect. However, it is unclear whether diversity-stability relationships and the role of population dynamics in soil microbial communities parallel those in plant communities. 2. Our study took place in a long-term land management experiment with and without perturbation to the soil ecosystem by tilling. We assessed the impacts...

Data from: Stallion semen quality depends on MHC matching to teaser mare

Elise Jeannerat, Eliane Marti, Catherine Berney, Fredi Janett, Heinrich Bollwein, Harald Sieme, Dominik Burger & Claus Wedekind
The major histocompatibility complex (MHC) has repeatedly been found to influence mate choice of vertebrates, with MHC-dissimilar mates typically being preferred over MHC-similar mates. We used horses (Equus caballus) to test whether MHC matching also affects male investment into ejaculates after short exposure to a female. Semen characteristics varied much among stallions. Controlling for this variance with a full-factorial within-subject experimental design, we found that a short exposure to an MHC-dissimilar mare enhanced male plasma...

Data from: The role of phenotypic plasticity on population differentiation

Max Schmid & Frédéric Guillaume
Several evolutionary processes shape the genetic and phenotypic differentiation of populations. Among them, the joint effects of gene flow, selection and phenotypic plasticity are poorly known, especially when trying to understand how maladaptive plasticity affects population divergence. We extended a quantitative genetic model of Hendry et al. (2001) to describe these joint effects on phenotypic and additive genetic divergence between two populations, and their phenotypic and genetic differentiation (PST and QST). With individual-based simulations, we...

Data from: Revised time scales of RNA virus evolution based on spatial information

Moritz Saxenhofer, Vanessa Weber De Melo, Rainer G. Ulrich & Gerald Heckel
The time scales of pathogen evolution are of major concern in the context of public and veterinary health, epidemiology and evolutionary biology. Dating the emergence of a pathogen often relies on estimates of evolutionary rates derived from nucleotide sequence data. For many viruses, this has yielded estimates of evolutionary origins only a few hundred years in the past. Here we demonstrate through the incorporation of geographic information from virus sampling that evolutionary age estimates of...

Data from: The lichens and allied fungi of Mount Mitchell State Park, North Carolina: a first checklist with comprehensive keys and comparison to historical data

James C. Lendemer, Carly R. Anderson Stewart, Betty Besa, Jim Goldsmith, Haley Griffith, Jordan R. Hoffman, Betsy Kraus, Paula LaPoint, Lin Li, Zachary Muscavitch, Joel Schultz, Rebecca Schultz & Jessica L. Allen
A total of 171 species of lichens and allied fungi are reported from the spruce-fir forests of Mount Mitchell State Park, in the Black Mountains of North Carolina, based on both historical and modern records. Comparison of the modern baseline with the historical macrolichen baseline generated in the 1970s revealed potential losses of high-elevation southern Appalachian endemics (2 species), cyanolichens (5 species), species typical of exposed rock outcrops (1 species), and widespread species typical of...

Data from: Climatologies at high resolution for the earth's land surface areas

Dirk N. Karger, Olaf Conrad, Jürgen Böhner, Tobias Kawohl, Holger Kreft, Rodrigo W. Soria-Auza, Niklaus E. Zimmermann, H. Peter Linder & Michael Kessler
High-resolution information on climatic conditions is essential to many applications in environmental and ecological sciences. Here we present the CHELSA (Climatologies at high resolution for the earth’s land surface areas) data of downscaled model output temperature and precipitation estimates of the ERA-Interim climatic reanalysis to a high resolution of 30 arc sec. The temperature algorithm is based on statistical downscaling of atmospheric temperatures. The precipitation algorithm incorporates orographic predictors including wind fields, valley exposition, and...

Registration Year

  • 2017

Resource Types

  • Dataset


  • University of Zurich
  • Swiss Federal Institute of Aquatic Science and Technology
  • University of Bern
  • Uppsala University
  • University of Neuchâtel
  • University of Lausanne
  • Australian National University
  • University of Basel
  • Agroscope
  • Universidade Federal de Goiás