37 Works

Large herbivores facilitate a dominant grassland plant via multiple indirect effects

Zhiwei Zhong, Xiaofei Li, Christian Smit, Tianyun Li, Ling Wang, Valeria Aschero, Diego Vázquez, Mark Ritchie, Hall Cushman & Deli Wang
While large herbivores are critically important components of terrestrial ecosystems and can have pronounced top-down effects on plants, our understanding of the underlying mechanisms driving these effects remains incomplete. Large herbivores can alter plant growth, reproduction and abundance through direct effects (predominantly consumption) and through indirect effects via altered interactions with abiotic factors and other species. We know considerably less about these indirect effects than the direct effects. Here, we integrate medium- and small-scale field...

Additional file 3 of Using skin temperature and activity profiles to assign chronotype in birds

Aurelia F. T. Strauß, Dominic J. McCafferty, Andreas Nord, Marina Lehmann & Barbara Helm
Additional file 3: R documentation of changepoint functions.

Globalizing medical knowledge and practise. Doctor-patient-interaction videoobserved at a university hospital in Groningen (Netherlands). Transcripts, translation, audiovisual and context material

Anja Weiß, Ilka Sommer, Stefanie Merse, Sarah Weingartz, Götz Wietasch, Alexander Maass & Solmaz Assa
DE: Der Datensatz enthält 18 Beobachtungen von Ärzten und Ärztinnen, die eine_n Simulationspatienten/in (SP) behandeln, der bzw. die Herzinsuffizenz simuliert, ein weit verbreitetes kardiologisches Syndrom. Die Arzt-Patient-Interaktionen fanden 2020 am University Medical Center Groningen (UMCG) in Groningen (Niederlande) statt. Die teilnehmenden Ärzte und Ärztinnen waren in Bezug auf Berufserfahrung, Spezialisierungsgrad, Fachsprache, Alter, Geschlecht und Migrationserfahrung divers. Diese Merkmale liegen als Fragebogendaten vor. Die Studie verwendete zwei Skripte für die SPs: Ein Fall von systolischer Herzinsuffizienz...

Genetic structure in the nonbreeding range of rufa Red Knots suggests distinct Arctic breeding populations

Yvonne Verkuil, Erika Tavares, Patricia M. González, Kristen Choffe, Oliver Haddrath, Mark Peck, Lawrence J. Niles, Allan J. Baker, Theunis Piersma & Jesse R. Conklin
An understanding of the migratory connectivity between breeding and nonbreeding areas is fundamental to the management of long-distance migrants under pressure from habitat change along their flyways. Here we describe evidence for genetic structure within the nonbreeding range of the endangered Arctic-Canadian rufa subspecies of Red Knots (Calidris canutus). Using blood and tissue samples from the major nonbreeding regions in Argentina (Tierra del Fuego and Río Negro), northern Brazil (Maranhão), and southeastern USA (Florida), we...

Dewlap color variation in Anolis sagrei is maintained among habitats within islands of the West Indies

Raphaël Scherrer, Colin M Donihue, R Graham Reynolds, Jonathan B Losos & Anthony J Geneva
Animal signals evolve in an ecological context. Locally adapting animal sexual signals can be especially important for initiating or reinforcing reproductive isolation during the early stages of speciation. Previous studies have demonstrated that dewlap color in Anolis lizards can be highly variable between populations in relation to both biotic and abiotic adaptive drivers at relatively large geographical scales. Here, we investigated differentiation of dewlap coloration among habitat types at a small spatial scale, within multiple...

Clock-linked genes underlie seasonal migratory timing in a diurnal raptor

Christen Bossu, Julie Heath, Gregory Kaltenecker, Barbara Helm & Kristen Ruegg
Seasonal migration is a dynamic natural phenomenon that allows organisms to exploit favorable habitats across the annual cycle. While the morphological, physiological, and behavioral changes associated with migratory behavior are well characterized, the genetic basis of migration and its link to endogenous biological timekeeping pathways is poorly understood. Historically, genome-wide research has focused on genes of large effect, whereas many genes of small effect may work together to regulate complex traits like migratory behavior. Here,...

Breeding biology of two populations of Chinese penduline tits

Jia Zheng
The phenotypes and breeding behavior in one species may be different between populations. The local environments, social interactions can all lead to some variations in life history. The thorough investigations of breeding biology over populations can provide insights for us to understand the evolution and diversifications of breeding systems and phenotypic traits from multiple perspectives other than drawing monotonous associations between a factor and a trait. In this study, we explored two Chinese penduline populations,...

Effects of season length and uniparental care efficiency on the evolution of parental care

Jia Zheng
Parental care patterns differ enormously among and even within species. In Chinese penduline tits (Remiz pendulinus), for example, biparental care, female-only care, male-only care, and biparental desertion all occur in the same population; moreover, the distribution of care patterns differs systematically between populations. By means of an individual-based model, we show that such diversity can readily evolve. We report five main findings. First, under a broad range of parameters, different care patterns (e.g. male care...

Pearson correlation tests for environmental variables, Student t-test for range shift and comparisons for habitat loss in 2070

Bingrun Zhu
Habitat loss and shifts associated with climate change threaten global biodiversity, with impacts likely to be most pronounced at high latitudes. With the disappearance of the tundra breeding habitats, migratory shorebirds that breed at these high latitudes are likely to be even more vulnerable to climate change than those in temperate regions. We examined this idea using new distributional information on two subspecies of Black-tailed Godwits Limosa limosa in Asia: the northerly, bog-breeding L. l....

Data for: Assortative mating in an ecological context: Effects of mate choice errors and relative species abundance on the frequency and asymmetry of hybridization

Anna Qvarnström, Thor Veen, Arild Husby, Murielle Ålund & Franz Weissing
The frequency and asymmetry of mixed-species mating set the initial stage for the ecological and evolutionary implications of hybridization. How such patterns of mixed-species mating, in turn, are influenced by the combination of mate choice errors and relative species abundance remain largely unknown. We develop a mathematical model that generates predictions for how relative species abundances and mate choice errors affect hybridization patterns. When mate choice errors are small (<5%) the highest frequency of hybridization...

Sex-specific influence of communal breeding experience on parenting performance and fitness in a burying beetle

Long Ma, Maaike Versteegh, Martijn Hammers & Jan Komdeur
Communal breeding, wherein multiple conspecific individuals live and reproduce together during a single breeding event, may generate immediate benefits in terms of defence and reproduction. However, the carry-over effects of events in communal breeding on individual behaviour and fitness remain less studied. We experimentally tested the immediate and carry-over effects of communal breeding on parenting performance and fitness in the burying beetle (Nicrophorus vespilloides). These beetles bury carcasses as food resource for their offspring and...

Additional file 2 of Using skin temperature and activity profiles to assign chronotype in birds

Aurelia F. T. Strauß, Dominic J. McCafferty, Andreas Nord, Marina Lehmann & Barbara Helm
Additional file 2: R documentation of data selection and chronotype estimations.

Data and scripts from: Microbiome composition is shaped by geography and population structure in the parasitic wasp Asobara japonica, but not in the presence of the endosymbiont Wolbachia

Pina Brinker & Michael C. Fontaine
The microbial community composition is crucial for diverse life-history traits in many organisms. However, we still lack a sufficient understanding of how the host microbiome is acquired and maintained, a pressing issue in times of global environmental change. Here we investigated to what extent host genotype, environmental conditions, and the endosymbiont Wolbachia influence the bacterial communities in the parasitic wasp Asobara japonica. We sampled multiple wasp populations across ten locations in their natural distribution range...

Data for: Telomere length is highly repeatable and shorter in individuals with more elaborate sexual ornamentation in a short-lived passerine

Tereza Kauzálová, Oldřich Tomášek, Ellis Mulder, Simon Verhulst & Tomáš Albrecht
Quantifying an individual’s state as fitness proxy has proven challenging, but accumulating evidence suggests that telomere length and attrition may indicate individual somatic state and success at self-maintenance, respectively. Sexual ornamentation is also thought to signal phenotypic quality, but links between telomeres and sexual ornamentation have been little explored. To address this issue, we examined whether telomere length and dynamics are predicted by the expression of a sexually selected ornament, the length of the outermost...

Data from: Unravelling the causes and consequences of dispersal syndromes in a wild passerine

Marion Nicolaus, Xuelai Wang, Koosje P. Lamers, Richard Ubels & Christiaan Both
Evidence accumulates that dispersal is correlated with individual behavioural phenotype (‘dispersal syndrome’). The evolutionary causes and consequences of such covariation depend on the degree of plasticity vs inheritance of the traits, which requires challenging experiments to implement in mobile organisms. Here, we combine a forced dispersal experiment, natural colonisation and longitudinal data to establish if dispersal and aggression levels are integrated and to test their adaptive nature in pied flycatchers (Ficedula hypoleuca). We found that...

Data from: Do ditch-side electrical fences improve the breeding productivity of ground-nesting waders?

Mo Verhoeven, Jelle Loonstra, Thomas Pringle, Wiebe Kaspersma, Mark Whiffin, Alice McBride, Pieter Sjoerdsma, Celine Roodhart, Malcolm Burgess, Theunis Piersma & Jennifer Smart
Insufficient reproduction as a consequence of predation on eggs and chicks is a major determinant of population decline in ground-nesting birds, including waders. For many populations, there is an urgent need to maintain breeding populations at key sites, and conservation practitioners need to find viable management solutions to reduce predation. One tool available to the practitioner are fences that exclude key predators from areas containing breeding birds. Temporary electric fencing is an increasingly popular predator...

Additional file 3 of Using skin temperature and activity profiles to assign chronotype in birds

Aurelia F. T. Strauß, Dominic J. McCafferty, Andreas Nord, Marina Lehmann & Barbara Helm
Additional file 3: R documentation of changepoint functions.

Data from: Emergence of splits and collective turns in pigeon flocks under predation

Marina Papadopoulou, Hanno Hildenbrandt, Daniel W.E. Sankey, Steven J. Portugal & Charlotte K. Hemelrijk
Complex patterns of collective behaviour may emerge through self-organization, from local interactions among individuals in a group. To understand what behavioural rules underlie these patterns, computational models are often necessary. These rules have not yet been systematically studied for bird flocks under predation. Here, we study airborne flocks of homing pigeons attacked by a robotic-falcon, combining empirical data with a species-specific computational model of collective escape. By analysing GPS trajectories of flocking individuals, we identify...

Global flyway evolution in red knots Calidris canutus and genetic evidence for a Nearctic refugium

Jesse Conklin, Yvonne Verkuil, Phil Battley, Chris Hassell, Job Ten Horn, James Johnson, Pavel Tomkovich, Allan Baker, Theunis Piersma & Michaël Fontaine
Present-day ecology and population structure are the legacies of past climate and habitat perturbations, and this is particularly true for species that are widely distributed at high latitudes. The red knot, Calidris canutus, is an arctic-breeding, long-distance migratory shorebird with six recognized subspecies defined by differences in morphology, migration behavior, and annual-cycle phenology, in a global distribution thought to have arisen just since the Last Glacial Maximum (LGM). We used nextRAD sequencing of 10,881 single-nucleotide...

Recent speciation and hybridization in Icelandic deep-sea isopods: An integrative approach using genomics and proteomics.

Saskia Brix, Eva Paulus, Pedro Martinez Arbizu, Sven Rossel, Janna Peters & Martin Schwentner
The crustacean marine isopod species Haploniscus bicuspis (G.O. Sars, 1877) shows circum-Icelandic distribution in a wide range of environmental conditions and along well-known geographic barriers, such as the Greenland-Iceland-Faroe (GIF) Ridge. We wanted to explore population genetics, phylogeography and cryptic speciation as well as to investigate whether previously described, but unaccepted subspecies have any merit. Using the same set of specimens, we combined mitochondrial COI sequences, thousands of nuclear loci (ddRAD), and proteomic profiles, plus...

What is the best fitness measure in wild populations? A case study on the power of short-term fitness proxies to predict reproductive value

Vita Ziva Alif, Julia Schroeder, Jamie Dunning, Heung Ying Janet Chik & Terry Burke
Fitness is at the core of evolutionary theory, but it is difficult to measure accurately. One way to measure long-term fitness is by calculating the individual’s reproductive value, which represents the expected number of allele copies an individual passes on to distant future generations. However, this metric of fitness is scarcely used because the estimation of individual’s reproductive value requires long-term pedigree data, which is rarely available in wild populations where following individuals from birth...

Glucose tolerance predicts survival in old zebra finches

Bibiana Montoya, Michael Briga, Blanca Jimeno & Simon Verhulst
This data set complies information on meassurements of glucose tolerance obtained from a sample of 122 zebra finches. We tested for a link between the capacity to regulate glucose levels and survival. We also investigated for the effects of ambient factors, age, sex, and manipulated developmental and adult conditions (i.e. natal brood size and foraging cost, in a full factorial design) on glucose tolerance. Glucose tolerance was quantified using the incremental ‘area under the curve’...

Mesocosm experiments reveal the loss of migratory tendencies in a recently isolated population of three-spined sticklebacks

Aparajitha Ramesh, Jakob Gismann, Ton Groothuis, Franjo Weissing & Nicolaus Marion
In the 1970s, water management in the Netherlands resulted in numerous isolated populations of three-spined sticklebacks, which can no longer migrate from freshwater to the sea. We tested whether ~50 years of isolation resulted in reduced migratory tendencies in these resident sticklebacks. Lab-based individual testing showed behavioural divergence between residents and migrants, but also produced counter-intuitive results, especially with regards to movement tendencies. To detect differences in migration tendencies, we set up a semi-natural mesocosm,...

Evolution of parasitoid host preference and performance in response to an invasive host acting as evolutionary trap

Astrid Kruitwagen, Leo Beukeboom, Bregje Wertheim & Sander Van Doorn
The invasion of a novel host species can create a mismatch in host choice and offspring survival (performance) when native parasitoids attempt to exploit the invasive host without being able to circumvent its resistance mechanisms. Invasive hosts can therefore act as evolutionary trap reducing parasitoids’ fitness and this may eventually lead to their extinction. Yet, escape from the trap can occur when parasitoids evolve behavioural avoidance or a physiological strategy compatible with the trap host,...

Amanitin intoxication: effects of therapies on clinical outcomes – a review of 40 years of reported cases

Jia Lin Tan, Janine Stam, Aad P. van den Berg, Patrick F. van Rheenen, Bart G. J. Dekkers & Daan J. Touw
Amanita phalloides poisoning causes severe liver damage which may be potentially fatal. Several treatments are available, but their effectiveness has not been systematically evaluated. We performed a systematic review to investigate the effect of the most commonly used therapies: N-acetylcysteine (NAC), benzylpenicillin (PEN), and silibinin (SIL) on patient outcomes. In addition, other factors contributing to patient outcomes are identified. We searched MEDLINE and Embase for case series and case reports that described patient outcomes after...

Registration Year

  • 2022

Resource Types

  • Dataset


  • University of Groningen
  • University of Glasgow
  • Lund University
  • Netherlands Institute of Ecology
  • University Medical Center Groningen
  • Swiss Ornithological Institute
  • University of Konstanz
  • Royal Ontario Museum
  • University of Montpellier
  • College of Charleston