26 Works

Data from: Logical validation and evaluation of practical feasibility for the SCRuM (School Clinical Rugby Measure) test battery developed for young adolescent rugby players in a resource-constrained environment

Matthew Chiwaridzo, Danai Chandahwa, Sander Oorschot, Cathrine Tadyanemhandu, Jermaine M. Dambi, Gillian Ferguson, Bouwien C.M. Smits-Engelsman & Bouwien C. M. Smits-Engelsman
There is a growing impetus towards usage of test batteries in talent identification (TID) programmes in rugby. Consequently, there are many test batteries in existence profiling anthropometric, physiological characteristics and rugby-specific skills. There is no consensus in the literature on the constituent variables and corresponding tests required to inform TID programs. Following development of a new test battery called the SCRuM (School Clinical Rugby Measure), this study aimed at establishing face, logical validity and practical...

Data from: First molecular characterization of Echinococcus granulosus (sensu stricto) genotype 1 among cattle in Sudan

Mohamed E. Ahmed, Bashir Salim, Martin P. Grobusch & Imadeldin E. Aradaib
Background: Echinococcus granulosus sensu lato (s.l.) is the causative agent of cystic echinococcosis (CE), which is a cosmopolitan zoonotic parasitic disease infecting humans and a wide range of mammalian species including cattle. Currently, little information is available on the genetic diversity of Echinococcus species among livestock in Sudan. In the present study, fifty (n = 50) hydatid cysts were collected from cattle carcasses (one cyst sample per animal) at Al-kadarou slaughterhouse, Khartoum North, Sudan. DNA...

Data from: Prey exploitation and dispersal strategies vary among natural populations of a predatory mite

Alexandra M. Revynthi, Martijn Egas, Arne Janssen & Maurice W. Sabelis
When predators commonly overexploit local prey populations, dispersal drives the dynamics in local patches, which together form a metapopulation. Two extremes in a continuum of dispersal strategies are distinguished: the “Killer” strategy, where predators only start dispersing when all prey are eliminated, and the “Milker” strategy, in which predator dispersal occurs irrespective of prey availability. Theory shows that the Milker strategy is not evolutionarily stable if local populations are well connected by dispersal. Using strains...

Data from: A synthesis of animal-mediated seed dispersal of palms reveals distinct biogeographic differences in species interactions

Gabriel Muñoz, Kristian Trøjelsgaard & W. Daniel Kissling
Aim: To synthesize published knowledge on palm-frugivore seed dispersal observations and to test whether broad-scale differences in geographic coverage, diversity, composition and functional structure of plant-animal interactions emerge between biogeographic regions. Location: Neotropics and Afrotropics. Methods: We constructed a meta-network for both regions by aggregating observations of pairwise palm-frugivore interactions from the primary literature. We assessed sampling completeness with accumulation curves and estimated knowledge gaps for individual palm species and geographic units within biogeographic regions....

Data from: Sex in the wild: how and why field-based studies contribute to solving the problem of sex

Maurine Neiman, Patrick Gerardus Meirmans, Tanja Schwander & Stephanie Meirmans
Why and how sexual reproduction is maintained in natural populations, the so-called “queen of problems”, is a key unanswered question in evolutionary biology. Recent efforts to solve the problem of sex have often emphasized results generated from laboratory settings. Here, we use a survey of representative “sex in the wild” literature to review and synthesize the outcomes of empirical studies focused on natural populations. Especially notable results included relatively strong support for mechanisms involving niche...

Data from: Fitness costs of key point mutations that underlie acaricide target-site resistance in the two-spotted spider mite Tetranychus urticae

Sabina Bajda, Maria Riga, Nicky Wybouw, Stavrini Papadaki, Eleni Ouranou, Seyedeh Masoumeh Fotoukkiaii, John Vontas & Thomas Van Leeuwen
The frequency of insecticide/acaricide target-site resistance is increasing in arthropod pest populations and is typically underpinned by single point mutations that affect the binding strength between the insecticide/acaricide and its target-site. Theory predicts that although resistance mutations clearly have advantageous effects under the selection pressure of the insecticide/acaricide, they might convey negative pleiotropic effects on other aspects of fitness. If such fitness costs are in place, target-site resistance is thus likely to disappear in the...

Data from: Body stores persist as fitness correlate in a long-distance migrant released from food constraints

Adriaan M. Dokter, Wimke Fokkema, Steven K. Bekker, Willem Bouten, Barwoldt S. Ebbinge, Gerard Müskens, Han Olff, Henk P. Van Der Jeugd, Bart A. Nolet & Barwolt S Ebbinge
Long-distance migratory birds rely on acquisition of body reserves to fuel their migration and reproduction. Breeding success depends on the amount of body reserve acquired prior to migration, which is thought to increase with access to food at the fuelling site. Here we studied how food abundance during fuelling affected time budgets and reproductive success. In a regime of plenty, we expected that (1) limitations on food harvesting would become lifted, allowing birds to frequently...

Data from: Legume abundance along successional and rainfall gradients in neotropical forests

Maga Gei, Danaë M. A. Rozendaal, Lourens Poorter, Frans Bongers, Janet I. Sprent, Mira D. Garner, T. Mitchell Aide, José Luis Andrade, Patricia Balvanera, Justin M. Becknell, Pedro H.S. Brancalion, George A. L. Cabral, Ricardo Gomes César, Robin L. Chazdon, Rebecca J. Cole, Gabriel Dalla Colletta, Ben De Jong, Julie S. Denslow, Daisy H. Dent, Saara J. DeWalt, Juan Manuel Dupuy, Sandra M. Durán, Mário Marcos Do Espírito Santo, G. Wilson Fernandes, Yule Roberta Ferreira Nunes … & Jennifer S. Powers
The nutrient demands of regrowing tropical forests are partly satisfied by nitrogen (N)-fixing legume trees, but our understanding of the abundance of those species is biased towards wet tropical regions. Here we show how the abundance of Leguminosae is affected by both recovery from disturbance and large-scale rainfall gradients through a synthesis of forest-inventory plots from a network of 42 Neotropical forest chronosequences. During the first three decades of natural forest regeneration, legume basal area...

Data from: Evolutionary dynamics of quantitative variation in an adaptive trait at the regional scale: the case of zinc hyperaccumulation in Arabidopsis halleri

Alicja Babst-Kostecka, Henk Schat, Pierre Saumitou-Laprade, Krystyna Grodzińka, Angélique Bourceaux, Maxime Pauwels & Hélène Frérot
Metal hyperaccumulation in plants is an ecological trait whose biological significance remains debated, in particular because the selective pressures that govern its evolutionary dynamics are complex. One of the possible causes of quantitative variation in hyperaccumulation may be local adaptation to metalliferous soils. Here we explored the population genetic structure of Arabidopsis halleri at fourteen metalliferous and non-metalliferous sampling sites in Southern Poland. The results were integrated with a quantitative assessment of variation in zinc...

Data from: A mechanistic assessment of the relationship between gut morphology and endozoochorous seed dispersal by waterfowl

Erik Kleyheeg, Bart A. Nolet, Sandra Otero-Ojea & Merel B. Soons
Many plants and invertebrates rely on internal transport by animals for long-distance dispersal. Their dispersal capacity is greatly influenced by interactions with the animal’s digestive tract. Omnivorous birds adjust their digestive tract morphology to seasonally variable diets. We performed feeding trials in waterfowl to unravel how changing organ size, in combination with seed size, affects dispersal potential. We subjected captive mallards to mimics of summer (animal-based), winter (plant-based) and intermediate diets, and analysed gut passage...

Data from: Vegetation trends over eleven years on mountain summits in NW Argentina

Julieta Carilla, Stephan Halloy, Soledad Cuello, Alfredo Grau, Agustina Malizia & Francisco Cuesta
As global climate change leads to warmer and dryer conditions in the central Andes, alpine plant communities are forced to upward displacements following their climatic niche. Species range shifts are predicted to have major impacts on alpine communities by reshuffling species composition and abundances. Using a standardized protocol, we surveyed alpine plant communities in permanent plots on four high Andean summits in NW Argentina, which range from 4040 to 4740 m a.s.l. After a baseline...

Data from: Subsampling reveals that unbalanced sampling affects STRUCTURE results in a multi-species dataset

Patrick G. Meirmans
Studying the genetic population structure of species can reveal important insights into several key evolutionary, historical, demographic, and anthropogenic processes. One of the most important statistical tools for inferring genetic clusters is the program STRUCTURE. Recently, several papers have pointed out that STRUCTURE may show a bias when the sampling design is unbalanced, resulting in spurious joining of underrepresented populations and spurious separation of overrepresented populations. Suggestions to overcome this bias include subsampling and changing...

Data from: Evolution of size-dependent intraspecific competition predicts body size scaling of metabolic rate

Vincent Hin & Andre M. De Roos
1. Growth in body size is accompanied by changes in foraging capacity and metabolic costs, which lead to changes in competitive ability during ontogeny. The resulting size-dependent competitive asymmetry influences population dynamics and community structure, but it is not clear whether natural selection leads to asymmetry in intraspecific competition. 2. We address this question by using a size-structured consumer-resource model, in which the strength and direction of competitive asymmetry between different consumer individuals depends on...

Data from: Differential recycling of coral and algal dissolved organic matter via the sponge loop

Laura Rix, Jasper M. De Goeij, Dick Van Oevelen, Ulrich Struck, Fuad A. Al-Horani, Christian Wild & Malik S. Naumann
Corals and macroalgae release large quantities of dissolved organic matter (DOM), one of the largest sources of organic matter produced on coral reefs. By rapidly taking up DOM and transforming it into particulate detritus, coral reef sponges are proposed to play a key role in transferring the energy and nutrients in DOM to higher trophic levels via the recently discovered sponge loop. DOM released by corals and algae differs in quality and composition, but the...

Social Protection in Ghana and Kenya through an Inclusive Development Lens: complex effects and risks

Nicky Pouw, Barbara Rohregger, Esther Schüring, Kennedy Alatinga, Bethuel Kinuthia & Katja Bender
This paper analyzes the complex effects and risks of social protection programmes in Ghana and Kenya on poor people’s human wellbeing, voice and empowerment and interactions with the social protection regulatory framework and policy instruments. For this purpose, it adopts a comprehensive Inclusive Development framework to systematically explore the complex effects of cash transfers and health insurance at the individual, household and community level. The findings highlight the positive provisionary and preventive effects of social...

Data from: Climate change and functional traits affect population dynamics of a long-lived seabird

Stephanie Jenouvrier, Marine Desprez, Rémi Fay, Christophe Barbraud, Henri Weimerskirch, Karine Delord & Hal Caswell
1. Recent studies unravelled the effect of climate changes on populations through their impact on functional traits and demographic rates in terrestrial and freshwater ecosystems, but such understanding in marine ecosystems remains incomplete. 2. Here, we evaluate the impact of the combined effects of climate and functional traits on population dynamics of a long-lived migratory seabird breeding in the southern ocean: the black-browed albatross (Thalassarche melanophris, BBA). We address the following prospective question: ''Of all...

Data from: Agricultural pastures challenge the attractiveness of natural saltmarsh for a migratory goose

Adriaan M. Dokter, Wimke Fokkema, Barwolt S. Ebbinge, Han Olff, Henk P. Van Der Jeugd & Bart A. Nolet
1. Broad-scale land conversions and fertilizer use have dramatically altered the available staging area for herbivorous long-distance migrants. Instead of natural land, these birds rely increasingly on pastures for migratory fuelling and stopover, often conflicting with farming practices. To be able to predict and manage birds’ future habitat use, the relative advantages and disadvantages of natural (e.g. saltmarsh, intertidal) versus anthropogenic staging sites for foraging need to be understood. 2. We compared the migratory staging...

Data from: Reciprocal intraguild predation and predator coexistence

Renata Vieira Marques, Renato Almeida Sarmento, Adriana Gonçalves Oliveira, Diego De Macedo Rodrigues, Madelaine Venzon, Marçal Pedro-Neto, Angelo Pallini & Arne Janssen
1. Intraguild predation is a mix of competition and predation, and occurs when one species feeds on another species that uses similar resources. Theory predicts that intraguild predation hampers coexistence of species involved, but it is common in nature. It has been suggested that increasing habitat complexity and the presence of alternative food may promote coexistence. Reciprocal intraguild predation limits possibilities for coexistence even further. Habitat complexity and the presence of alternative food are believed...

Data from: Shifting species and functional diversity due to abrupt changes in water availability in tropical dry forests

Diego Raymundo, Jamir Prado-Junior, Fabrício Alvim Carvalho, Vagner Santiago Do Vale, Paulo E. Oliveira, Masha T. Van Der Sande & Masha T. Sande
Recent insights show that tropical forests are shifting in species composition, possibly due to changing environmental conditions. However, we still poorly understand the forest response to different environmental change drivers, which limits our ability to predict the future of tropical forests. Although some studies have evaluated drought effects on tree communities, we know little about the influence of increased water availability. Here, we evaluated how an increase in water availability caused by an artificial reservoir...

Data from: People making deontological judgments in the Trapdoor dilemma are perceived to be more prosocial in economic games than they actually are

Valerio Capraro, Jonathan Sippel, Bonan Zhao, Levin Hornischer, Morgan Savary, Zoi Terzopoulou, Pierre Faucher & Simone F. Griffioen
Why do people make deontological decisions, although they often lead to overall unfavorable outcomes? One account is receiving considerable attention: deontological judgments may signal commitment to prosociality and thus may increase people’s chances of being selected as social partners–which carries obvious long-term benefits. Here we test this framework by experimentally exploring whether people making deontological judgments are expected to be more prosocial than those making consequentialist judgments and whether they are actually so. In line...

Data from: Patterns of reproductive isolation in a haplodiploid – strong post‐mating, prezygotic barriers among three forms of a social spider mite

Yukie Sato, Hironori Sakamoto, Tetsuo Gotoh, Yutaka Saito, Jung-Tai Chao, Martijn Egas & Atsushi Mochizuki
In speciation research, much attention is paid to the evolution of reproductive barriers, preventing diverging groups from hybridizing back into one gene pool. The prevalent view is that reproductive barriers evolve gradually as a byproduct of genetic changes accumulated by natural selection and genetic drift in groups that are segregated spatially and/or temporally. Reproductive barriers, however, can also be reinforced by natural selection against maladaptive hybridization. These mutually compatible theories are both empirically supported by...

Data from: Host-targeted RAD-Seq reveals genetic changes in the coral Oculina patagonica associated with range expansion along the Spanish Mediterranean coast

Karine Posbic Leydet, Carsten G.B. Grupstra, Rafel Coma, Marta Ribes, Michael E. Hellberg & Carsten G. B. Grupstra
Many organisms are expanding their ranges in response to changing environmental conditions. Understanding the patterns of genetic diversity and adaptation along an expansion front is crucial to assessing a species’ long-term success. While next-generation sequencing techniques can reveal these changes in fine detail, ascribing them to a particular species can be difficult for organisms that live in close association with symbionts. Using a novel modified restriction-site associated DNA sequencing (RAD-Seq) protocol to target coral DNA,...

Data from: Influence of full-length dystrophin on brain volumes in mouse models of Duchenne muscular dystrophy

Bauke Kogelman, Artem Khmelinskii, Ingrid Verhaart, Laura Van Vliet, Diewertje I. Bink, Annemieke Aartsma-Rus, Maaike Van Putten & Louise Van Der Weerd
Duchenne muscular dystrophy (DMD) affects besides muscle also the brain, resulting in memory and behavioral problems. The consequences of dystrophinopathy on gross macroscopic alterations are unclear. To elucidate the effect of dystrophin expression on brain morphology, we used high-resolution post-mortem MRI in mouse models that either express 0% (mdx), 100% (BL10) or a low amount of full-length dystrophin (mdx-Xist∆hs). While absence or low amounts of dystrophin did not result in significantly different whole brain volume...

Data from: Field validation of radar systems for monitoring bird migration

Cecilia Nilsson, Adriaan M. Dokter, Baptiste Schmid, Martina Scacco, Liesbeth Verlinden, Johan Bäckman, Günther Haase, Giacomo Dell'Omo, Jason W. Chapman, Hidde Leijnse & Felix Liechti
1. Advances in information technology are increasing the use of radar as a tool to investigate and monitor bird migration movements. We set up a field campaign to compare and validate outputs from different radar systems. 2. Here we compare the pattern of nocturnal bird migration movements recorded by four different radar systems at a site in southern Sweden. Within the range of the weather radar (WR) Ängelholm, we operated a “BirdScan” (BS) dedicated bird...

Data from: Aeroecology meets aviation safety: early warning systems in Europe and the Middle East prevent collisions between birds and aircraft

Hans Van Gasteren, Karen L. Krijgsveld, Nadine Klauke, Yossi Leshem, Isabel C. Metz, Michal Skakuj, Serge Sorbi, Inbal Schekler & Judy Shamoun-Baranes
The aerosphere is utilized by billions of birds, moving for different reasons and from short to great distances spanning tens of thousands of kilometres. The aerosphere, however, is also utilized by aviation which leads to increasing conflicts in and around airfields as well as en-route. Collisions between birds and aircraft cost billions of euros annually and, in some cases, result in the loss of human lives. Simultaneously, aviation has diverse negative impacts on wildlife. During...

Registration Year

  • 2018

Resource Types

  • Dataset
  • Text


  • University of Amsterdam
  • Nederlands Instituut voor Ecologie
  • University of Groningen
  • University of Haifa
  • Swiss Ornithological Institute
  • Wageningen University & Research
  • Cornell University
  • Helmholtz Centre for Environmental Research
  • Max Planck Institute for Ornithology
  • Federal University of Southern Bahia