47 Works

Data from: An experimental test of state-behaviour feedbacks: gizzard mass and foraging behaviour in red knots

Kimberley J. Mathot, Anne Dekinga & Theunis Piersma
1. Animals frequently exhibit consistent among-individual differences in behavioural and physiological traits that are inherently flexible. Why should individuals differ consistently in their expression of labile traits? Recently, positive feedbacks between state and behaviour have been proposed as a parsimonious explanation for the maintenance of consistent among-individual differences in both state and behaviour. If state affects behaviour, and behaviour reciprocally affects state, then even chance differences in either state or behaviour that arise among-individuals could...

Data from: Delayed dispersal and the costs and benefits of different routes to independent breeding in a cooperatively breeding bird

Sjouke A. Kingma, Kat Bebbington, Martijn Hammers, David S. Richardson & Jan Komdeur
Why sexually mature individuals stay in groups as nonreproductive subordinates is central to the evolution of sociality and cooperative breeding. To understand such delayed dispersal, its costs and benefits need to be compared with those of permanently leaving to float through the population. However, comprehensive comparisons, especially regarding differences in future breeding opportunities, are rare. Moreover, extraterritorial prospecting by philopatric individuals has generally been ignored, even though the factors underlying this route to independent breeding...

Data from: Tightly congruent bursts of lineage and phenotypic diversification identified in a continental ant radiation

Shauna L. Price, Rampal S. Etienne & Scott Powell
Adaptive diversification is thought to be shaped by ecological opportunity. A prediction of this ecological process of diversification is that it should result in congruent bursts of lineage and phenotypic diversification, but few studies have found this expected association. Here, we study the relationship between rates of lineage diversification and body size evolution in the turtle ants, a diverse Neotropical clade. Using a near complete, time-calibrated phylogeny we investigated lineage diversification dynamics and body size...

Data from: Body shrinkage due to Arctic warming reduces red knot fitness in tropical wintering range

Jan A. Van Gils, Simeon Lisovski, Tamar Lok, Włodzimierz Meissner, Agnieszka Ożarowska, Jimmy De Fouw, Eldar Rakhiemberdiev, Mikhail Y. Soloviev, Theunis Piersma & Marcel Klaassen
Reductions in body size are increasingly being identified as a response to climate warming. Here we present evidence for a case of such body shrinkage, potentially due to malnutrition in early life. We show that an avian long-distance migrant (red knot, Calidris canutus canutus), which is experiencing globally unrivaled warming rates at its high-Arctic breeding grounds, produces smaller offspring with shorter bills during summers with early snowmelt. This has consequences half a world away at...

Data from: Stabilising survival selection on pre-senescent expression of a sexual ornament followed by a terminal decline

Mirre Simons, Michael Briga, Simon Verhulst & M. J. P. Simons
Senescence is a decrease in functional capacity, increasing mortality rate with age. Sexual signals indicate functional capacity, because costs of ornamentation ensure signal honesty, and are therefore expected to senesce, tracking physiological deterioration and mortality. For sexual traits, mixed associations with age and positive associations with life expectancy have been reported. However, whether these associations are caused by selective disappearance and/or within-individual senescence of sexual signals, respectively, is not known. We previously reported that zebra...

Data from: Community assembly in Lake Tanganyika cichlid fish: quantifying the contributions of both niche-based and neutral processes

Thijs Janzen, Adriana Alzate, Moritz Muschick, Martine E. Maan, Fons Van Der Plas & Rampal S. Etienne
The cichlid family features some of the most spectacular examples of adaptive radiation. Evolutionary studies have highlighted the importance of both trophic adaptation and sexual selection in cichlid speciation. However, it is poorly understood what processes drive the composition and diversity of local cichlid species assemblages on relatively short, ecological timescales. Here, we investigate the relative importance of niche-based and neutral processes in determining the composition and diversity of cichlid communities inhabiting various environmental conditions...

Data from: How reliably can we infer diversity-dependent diversification from phylogenies?

Rampal S. Etienne, Alex L. Pigot, Albert Phillimore & Albert B. Phillimore
Slowdowns in lineage accumulation in phylogenies suggest that speciation rates decline as diversity increases. Likelihood methods have been developed to detect such diversity dependence. However, a thorough test of whether such approaches correctly infer diversity dependence is lacking. Here, we simulate phylogenetic branching under linear negative diversity-dependent and diversity-independent models and estimate from the simulated phylogenies the maximum-likelihood parameters for three different conditionings – on survival of the birth–death process given the crown age, on...

Data from: Linking genetic kinship and demographic analyses to characterize dispersal: methods and application to Blanding’s turtle

Brendan N. Reid, Richard P. Thiel, Per J. Palsbøll & Marcus Z. Peery
Characterizing how frequently, and at what life stages and spatial scales, dispersal occurs can be difficult, especially for species with cryptic juvenile periods and long reproductive life spans. Using a combination of mark–recapture information, microsatellite genetic data, and demographic simulations, we characterize natal and breeding dispersal patterns in the long-lived, slow-maturing, and endangered Blanding’s turtle (Emydoidea blandingii), focusing on nesting females. We captured and genotyped 310 individual Blanding’s turtles (including 220 nesting females) in a...

Data from: How habitat-modifying organisms structure the food web of two coastal ecosystems

Els M. Van Der Zee, Christine Angelini, Laura L. Govers, Marjolijn J. A. Christianen, Andrew H. Altieri, Karin J. Van Der Reijden, Brian R. Silliman, Johan Van De Koppel, Matthijs Van Der Geest, Jan A. Van Gils, Henk W. Van Der Veer, Theunis Piersma, Peter C. De Ruiter, Han Olff & Tjisse Van Der Heide
The diversity and structure of ecosystems has been found to depend both on trophic interactions in food webs and on other species interactions such as habitat modification and mutualism that form non-trophic interaction networks. However, quantification of the dependencies between these two main interaction networks has remained elusive. In this study, we assessed how habitat-modifying organisms affect basic food web properties by conducting in-depth empirical investigations of two ecosystems: North American temperate fringing marshes and...

Data from: How individual Montagu's Harriers cope with Moreau's Paradox during the Sahelian winter

Almut Ellinor Schlaich, Raymond H. G. Klaassen, Willem Bouten, Vincent Bretagnolle, Ben Johannes Koks, Alexandre Villers & Christiaan Both
Hundreds of millions of Afro-Palaearctic migrants winter in the Sahel, a semi-arid belt south of the Sahara desert, where they experience deteriorating ecological conditions during their overwintering stay and have to prepare for spring migration when conditions are worst. This well-known phenomenon was first described by R.E. Moreau and is known ever since as Moreau's Paradox. However, empirical evidence of the deteriorating seasonal ecological conditions is limited and little is known on how birds respond....

Data from: Ecological forensics: using single point stable isotope values to infer seasonal schedules of animals after two diet switches

Jeltje Jouta, Maurine W. Dietz, Jeroen Reneerkens, Theunis Piersma, Eldar Rakhimberdiev, Gunnar T. Hallgrímsson & Ido Pen
Animals adjust to seasonal challenges in physical, behavioural and spatial ways. Such adjustments are commonly associated with diet changes that often can be characterised isotopically. We introduce the ‘double diet switch model’, with which the occurrence and timing of two subsequent diet switches of an individual animal can be traced with a single sample assayed for stable isotopes. We demonstrate the model for Sanderling, Calidris alba, a small shorebird that migrates from the Nearctic tundra...

Data from: The correlation between colouration and exploration behaviour varies across hierarchical levels in a wild passerine bird

Marion Nicolaus, Romain Piault, Richard Ubels, Joost M. Tinbergen & Niels J. Dingemanse
IIn vertebrates, darker individuals are often found to be more active and willing to take risks (representing characteristics of a ‘proactive’ coping style), whereas lighter individuals are instead more cautious and less active (representing characteristics of a ‘reactive’ coping style). It is thus generally expected that melanin-based colouration and proactivity form a suite of positively integrated traits at the among-individual level. Here we use a multi-generational pedigree of free-living great tits (Parus major) to partition...

Data from: Sharp acoustic boundaries across an altitudinal avian hybrid zone despite asymmetric introgression

Wouter Halfwerk, Caroline Dingle, Dusan M. Brinkhuizen, Jelmer W. Poelstra, Jan Komdeur & Hans Slabbekoorn
Birdsong is a sexually selected trait that could play an important evolutionary role when related taxa come into secondary contact. Many songbird species however learn their songs through copying one or more tutors, which complicates the evolutionary outcome of such contact. Two subspecies of a presumed vocal learner, the grey-breasted wood-wren (Henicorhina leucophrys), replace each other altitudinally across the western slope of the Ecuadorian Andes. These subspecies are morphologically very similar, but show striking differences...

Data from: Understanding nutrient dynamics in an African savanna: local biotic interactions outweigh a major regional rainfall gradient

Michiel P. Veldhuis, Anneleen Hulshof, Wimke Fokkema, Matty P. Berg & Han Olff
Nutrient availability in terrestrial ecosystems has been found to vary along regional climatic and soil gradients and drive variation in plant community composition and vegetation structure. However, more local biotic feedbacks also affect nutrient availability, but their importance in determining vegetation structure relative to regional drivers is yet unclear. Mesic African savannas form a transition zone between the dry grasslands with relatively low nitrogen availability (indicated by low plant N:P ratios) and the wet woodlands...

Data from: Quantifying species contributions to ecosystem processes: a global assessment of functional trait and phylogenetic metrics across avian seed-dispersal networks

Alexander L. Pigot, Tom Bregman, Catherine Sheard, Benjamin Daly, Rampal S. Etienne & Joseph A. Tobias
Quantifying the role of biodiversity in ecosystems not only requires understanding the links between species and the ecological functions and services they provide, but also how these factors relate to measurable indices, such as functional traits and phylogenetic diversity. However, these relationships remain poorly understood, especially for heterotrophic organisms within complex ecological networks. Here, we assemble data on avian traits across a global sample of mutualistic plant–frugivore networks to critically assess how the functional roles...

Data from: Food availability affects adult survival trajectories depending on early developmental conditions

Michael Briga, Egbert Koetsier, Jelle J. Boonekamp, Blanca Jimeno & Simon Verhulst
Food availability modulates survival in interaction with (for example) competition, disease and predators, but to what extent food availability in natural populations affects survival independent of these factors is not well known. We tested the effect of food availability on lifespan and actuarial senescence in a large population of captive zebra finches by increasing the effort required to obtain food, reflecting natural contrasts in food availability. Food availability may not affect all individuals equally and...

Data from: Quantifying uncertainty of taxonomic placement in DNA barcoding and metabarcoding

Panu Somervuo, Douglas W. Yu, Charles C.Y. Xu, YinQiu Ji, Jenni Hultman, Helena Wirta & Otso Ovaskainen
A crucial step in the use of DNA markers for biodiversity surveys is the assignment of Linnaean taxonomies (species, genus, etc.) to sequence reads. This allows the use of all the information known based on the taxonomic names. Taxonomic placement of DNA barcoding sequences is inherently probabilistic because DNA sequences contain errors, because there is natural variation among sequences within a species, and because reference data bases are incomplete and can have false annotations. However,...

Data from: Labor market integration of people with disabilities: results from the Swiss Spinal Cord Injury Cohort Study

Jan D. Reinhardt, Marcel W.M. Post, Christine Fekete, Bruno Trezzini, Martin W.G. Brinkhof, Marcel W. M. Post & Martin W. G. Brinkhof
Objectives: We aimed to describe labor market participation (LMP) of persons with spinal cord injury (SCI) in Switzerland, to examine potential determinants of LMP, and to compare LMP between SCI and the general population. Methods: We analyzed data from 1458 participants of employable age from the cross-sectional community survey of the Swiss Spinal Cord Injury Cohort Study. Data on LMP of the Swiss general population were obtained from the Swiss Federal Statistics Office. Factors associated...

Data from: Developmental effects of visual environment on species-assortative mating preferences in Lake Victoria cichlid fish

Daniel S. Wright, Nicolle Demandt, Jeroen T. Alkema, Ole Seehausen, Ton G.G. Groothuis & Martine E. Maan
Local adaptation can be a potent force in speciation, with environmental heterogeneity leading to niche specialization and population divergence. However, local adaption often requires non-random mating in order to generate reproductive isolation. Population divergence in sensory properties can be particularly consequential in speciation, affecting both ecological adaptation and sexual communication. Pundamilia pundamila and Pundamilia nyererei are two closely related African cichlid species that differ in male coloration, blue vs. red. They co-occur at rocky islands...

Data from: Effects of food abundance and early clutch predation on reproductive timing in a high Arctic shorebird exposed to advancements in arthropod abundance

Jeroen Reneerkens, Niels Martin Schmidt, Olivier Gilg, Jannik Hansen, Lars Holst Hansen, Jérôme Moreau & Theunis Piersma
Climate change may influence the phenology of organisms unequally across trophic levels and thus lead to phenological mismatches between predators and prey. In cases where prey availability peaks before reproducing predators reach maximal prey demand, any negative fitness consequences would selectively favor resynchronization by earlier starts of the reproductive activities of the predators. At a study site in northeast Greenland, over a period of 17 years, the median emergence of the invertebrate prey of Sanderling...

Data from: Effects of experimental warming on biodiversity depend on ecosystem type and local species composition

Daniel S. Gruner, Matthew E. S. Bracken, Stella A. Berger, Britas Klemens Eriksson, Lars Gamfeldt, Birte Matthiessen, Stefanie Moorthi, Ulrich Sommer & Helmut Hillebrand
Climatic warming is a primary driver of change in ecosystems worldwide. Here, we synthesize responses of species richness and evenness from 187 experimental warming studies in a quantitative meta-analysis. We asked 1) whether effects of warming on diversity were detectable and consistent across terrestrial, freshwater and marine ecosystems, 2) if effects on diversity correlated with intensity, duration, and experimental unit size of temperature change manipulations, and 3) whether these experimental effects on diversity interacted with...

Data from: Quantification of population sizes of large herbivores and their long-term functional role in ecosystems using dung fungal spores

Ambroise G. Baker, Perry Cornelissen, Shonil Bhagwat, Fransciscus W. M. Vera, Katherine J. Willis & Shonil A. Bhagwat
The relationship between large herbivore numbers and landscape cover over time is poorly understood. There are two schools of thought: one views large herbivores as relatively passive elements upon the landscape and the other as ecosystem engineers driving vegetation succession. The latter relationship has been used as an argument to support reintroductions of large herbivores onto many landscapes in order to increase vegetation heterogeneity and biodiversity through local-scale disturbance regimes. Most of the research examining...

Data from: The cost of prospecting for dispersal opportunities in a social bird

Sjouke A. Kingma, Jan Komdeur, Martijn Hammers & David S. Richardson
Understanding why individuals delay dispersal and become subordinates within a group is central to studying the evolution of sociality. Hypotheses predict that dispersal decisions are influenced by costs of extra-territorial prospecting that are often required to find a breeding vacancy. Little is known about such costs, partly because it is complicated to demonstrate them empirically. For example, prospecting individuals may be of inferior quality already before prospecting and/or have been evicted. Moreover, costs of prospecting...

Data from: Telomere length reflects reproductive effort indicated by corticosterone levels in a long-lived seabird

Christina Bauch, Juliane Riechert, Simon Verhulst & Peter H. Becker
Telomere length (TL) is a candidate biomarker of ageing and phenotypic quality, but little is known of the (physiological) causes of TL variation. We previously showed that individual common terns Sterna hirundo with high reproductive success had short telomeres independent of age, and this pattern was particularly strong in the longer telomeres of the within-individual TL distribution. To test whether this relation can be attributed to effects of reproductive effort, we investigated baseline corticosterone in...

Data from: African departure rather than migration speed determines variation in spring arrival in pied flycatchers

Janne Ouwehand & Christiaan Both
Properly timed spring migration enhances reproduction and survival. Climate change requires organisms to respond to changes such as advanced spring phenology. Pied flycatchers Ficedula hypoleuca have become a model species to study such phenological adaptations of long-distance migratory songbirds to climate change, but data on individuals’ time schedules outside the breeding season are still lacking. Using light-level geolocators, we studied variation in migration schedules across the year in a pied flycatcher population in the Netherlands,...

Registration Year

  • 2016

Resource Types

  • Dataset


  • University of Groningen
  • VU University Amsterdam
  • Utrecht University
  • University of Bern
  • University of East Anglia
  • University of Oxford
  • University of Gdańsk
  • Aarhus University
  • Nederlands Instituut voor Ecologie
  • Royal Netherlands Institute for Sea Research