272 Works

Data from: Temporal dynamics in animal community assembly during post-logging succession in boreal forest

Hélène Le Borgne, Christian Hébert, Angélique Dupuch, Orphé Bichet, David Pinaud & Daniel Fortin
Species assemblages can result from deterministic processes, such as niche differentiation and interspecific interactions, and from stochastic processes, such as random colonisation and extinction events. Although changes in animal communities following disturbances have been widely examined, few studies have investigated the mechanisms structuring communities during ecological succession. We assessed the impact of logging on small mammal and beetle assemblages in landscapes dominated by old-growth boreal forests. Our objectives were to 1) characterize variations in communities...

Data from: Temporal variation in spatial genetic structure during population outbreaks: distinguishing among different potential drivers of spatial synchrony

Jeremy Larroque, Simon Legault, Rob Johns, Lisa Lumley, Michel Cusson, Sébastien Renaut, Roger Levesque & Patrick M. A. James
Spatial synchrony is a common characteristic of spatio-temporal population dynamics across many taxa. While it is known that both dispersal and spatially autocorrelated environmental variation (i.e., the Moran effect) can synchronize populations, the relative contributions of each, and how they interact, is generally unknown. Distinguishing these mechanisms and their effects on synchrony can help us to better understand spatial population dynamics, design conservation and management strategies, and predict climate change impacts. Population genetic data can...

Data from: Genomic parallelism and lack thereof in contrasting systems of three‐spined sticklebacks

Shenglin Liu, Anne-Laure Ferchaud, Peter Grønkjær, Rasmus Nygaard & Michael M. Hansen
Parallel evolution and the extent to which it involves gene reuse has attracted much interest. Whereas it has theoretically been predicted under which circumstances gene reuse is expected, empirical studies that directly compare systems showing high and low parallelism are rare. Three-spine stickleback (Gasterosteus aculeatus), where freshwater populations have been independently founded by ancestral marine populations, represent prime examples of phenotypic and genomic parallelism, but cases exist where parallelism is low. Based on RAD (Restriction...

Data from: Seascape genomics of eastern oyster (Crassostrea virginica) along the Atlantic coast of Canada.

Simon Bernatchez, Amanda Xuereb, Martin Laporte, Laura Benestan, Royce Steeves, Mark Laflamme, Louis Bernatchez & Martin Mallet
Interactions between environmental factors and complex life-history characteristics of marine organisms produce the genetic diversity and structure observed within species. Our main goal was to test for genetic differentiation among eastern oyster populations from the coastal region of Canadian Maritimes against expected genetic homogeneity caused by historical events, taking into account spatial and environmental (temperature, salinity, turbidity) variation. This was achieved by genotyping 486 individuals originating from 13 locations using RADSeq. A total of 11...

Vascular plant community data for Northwest Territories, Canada

Jennifer Baltzer, Nicola Day, Alison White, Kirsten Reid, Geneviève Degré-Timmons, Steve Cumming, Michelle Mack, Merritt Turetsky, Xanthe Walker & Jill Johnstone
Climate change is altering disturbance regimes outside of historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60m2) in recently burned stands and 133...

Adult survival in migratory caribou is negatively associated with MHC functional diversity

Marianne Gagnon, Glenn Yannic, Frédéric Boyer & Steeve Côté
The genes of the major histocompatibility complex (MHC) are involved in acquired, specific immunity in vertebrates. Yet, only a few studies have investigated the fitness consequences of MHC gene diversity in wild populations. Here, we looked at the association between annual survival and body mass and MHC-DRB exon 2 (MHC-DRB) genetic diversity, obtained from high-throughput sequencing, in two declining migratory caribou (Rangifer tarandus) herds. To disentangle the potential direct and general effects of MHC-DRB genetic...

Effects of different moose browsing pressures on the succession of plant communities within the herbaceous and saplings layers of a boreal forest

Laurent De Vriendt, Sébastien Lavoie, Jean-Pierre Tremblay & Maxime Brousseau
The present data is constituted of four different excel files: browsing data, herbs layer data, saplings layer data and latin names data. 1) Browsing data contains the number of browsed and unbrowsed twigs from all ligneous plants in the samplings plots along time. 2) Herbs layer data contains the cumulated cover of all plants species along 14 three meters long and one meter high transcects within each experimental units. 3) Saplings layer data contains the...

Rearing environment affects the genetic architecture and plasticity of DNA methylation in Chinook salmon

Clare Venney, Kyle Wellband & Daniel Heath
Genetic architecture and phenotypic plasticity are important considerations when studying trait variation within and among populations. Since environmental change can induce shifts in the genetic architecture and plasticity of traits, it is important to consider both genetic and environmental sources of phenotypic variation. While there is overwhelming evidence for environmental effects on phenotype, the underlying mechanisms are less clear. Variation in DNA methylation is a potential mechanism mediating environmental effects on phenotype due to its...

What Peer-review Experiences Can Offer To Early Career Scientists And To The Scientific Community

Gwenaëlle Gremion, Mathieu Casado, Kelsey Aho, Jilda Alicia Caccavo, Nicolas Champollion, Emily Choy, Sarah L. Connors, Rahul Dey, Alfonso Fernandez, Gerlis Fugmann, Juan Höfer, Shridhar Jawak, Martine Lizotte, Sarah Maes, Kyle Mayers, Katja Mintenbeck, Jhon Fredy Mojica Moncada, Prashant H. Pandit, Elvira Poloczanska, Paul Rosenbaum, Elisa Seyboth, Sarah Shakil & Maud van Soest

Trend Inflation, Wage and Price Rigidities, and Welfare

Robert Amano, Kevin Moran, Stephen Murchison & Andrew Rennison
This paper studies the steady-state costs of inflation in a general-equilibrium model with real per capita output growth and staggered nominal price and wage contracts. Our analysis shows that trend inflation has important effects on the economy when combined with nominal contracts and real output growth. Steady-state output and welfare losses are quantitatively important even for low values of trend inflation. Further, we show that nominal wage contracting is quantitatively more important than nominal price...

Do ecological specialization and functional traits explain the abundance–frequency relationship? Arable weeds as a case study

Guillaume Fried, Laura Armengot, Jonathan Storkey, Bérenger Bourgeois, Sabrina Gaba, Cyrille Violle & François Munoz
Aim: The abundance-frequency relationship (AFR) is among the most-investigated pattern in biogeography, yet the relative contributions of niche-based processes related to ecological strategies, and of neutral processes related to spatial colonization-extinction dynamics, remains uncertain. Here, we tested the influences of ecological specialization and functional traits on local abundance and regional frequency, to determine the contribution of niche-based processes. Location: France and the UK. Taxon: Vascular plants. Methods: We used two arable weed surveys covering 1544...

Context-dependent dispersal determines relatedness and genetic structure in a patchy amphibian population

Bianca Unglaub, Hugo Cayuela, Benedikt R. Schmidt, Kathleen Preißler, Julian Glos & Sebastian Steinfartz
Dispersal is a central process in ecology and evolution with far reaching consequences for the dynamics and genetics of spatially structured populations (SSPs). Individuals can adjust their decisions to disperse according to local fitness prospects, resulting in context-dependent dispersal. By determining dispersal rate, distance, and direction, these individual-level decisions further modulate the demography, relatedness, and genetic structure of SSPs. Here, we examined how context-dependent dispersal influences the dynamics and genetics of a Great Crested Newt...

Linking genetic, morphological, and behavioural divergence between inland island and mainland deer mice

Joshua Miller, Dany Garant, Charles Perrier, Tristan Juette, Joël Jameson, Denis Réale, Eric Normandeau & Louis Bernatchez
The island syndrome hypothesis (ISH) stipulates that, as a result of local selection pressures and restricted gene flow, individuals from island populations should differ from individuals within mainland populations. Specifically, island populations are predicted to contain individuals that are larger, less aggressive, more sociable, and that invest more in their offspring. To date, tests of the ISH have mainly compared oceanic islands to continental sites, and rarely smaller spatial scales such as inland watersheds. Here,...

Dataset for: Effects of chloride and nutrients on freshwater plankton communities

Danielle Greco, Shelley Arnott, Isabelle Fournier & Brandon Schamp
Increasing chloride concentrations threaten freshwater zooplankton. We questioned the protectiveness of the Canadian Water Quality Guideline for chloride because it is based on individual species studied under laboratory conditions and does not account for potential interactive factors, such as nutrient concentration. We exposed plankton communities to thirty chloride concentration increments for six weeks, crossed with either ambient or high nutrient treatments. Total zooplankton abundance, biomass, and richness declined with increasing chloride, with losses observed below...

Sensitivity analysis of the maximum entropy production method to model evaporation in boreal and temperate forests

Audrey Maheu, Pierre-Erik Isabelle, Laure Viens, Daniel F. Nadeau, François Anctil & Jingfeng Wang
The maximum entropy production (MEP) approach has been little used to simulate evaporation in forests and its sensitivity to input variables has yet to be systematically evaluated. This study addresses these shortcomings. First, we show that the MEP model performed well in simulating evaporation during the snow-free period at six sites in temperate and boreal forests (0.68 ≤ NSE ≤ 0.82). Second, we computed a sensitivity coefficient S representing the proportion of change in the...

Genome-wide methylation in the panmictic European eel (Anguilla anguilla)

Shenglin Liu, Aja Noersgaard Buur Tengstedt, Magnus W. Jacobsen, Jose Martin Pujolar, Bjarni Jónsson, Javier Lobón-Cervià, Louis Bernatchez & Michael M. Hansen
The role of methylation in adaptive, developmental and speciation processes has attracted considerable interest, but interpretation of results is complicated by diffuse boundaries between genetic and non-genetic variation. We studied whole genome genetic and methylation variation in the European eel, distributed from subarctic to subtropical environments, but with panmixia precluding genetically based local adaptation beyond single-generation responses. Overall methylation was 70.9%, with hypomethylation predominantly found in promoters and first exons. Redundancy analyses involving juvenile glass...

Effects of temperature on mating behaviour and mating success: a meta-analysis

Natalie Pilakouta & Anais Baillet
In light of global climate change, there is a pressing need to understand how populations will respond to rising temperatures. Understanding the effects of temperature changes on mating behaviour is particularly important, given its implications for population viability. To this end, we performed a meta-analysis of 53 studies to examine how temperature changes influence mating latency, choosiness, and mating success. We hypothesized that if higher temperatures make mate searching and mate assessment more costly due...

Data from: Large herbivores trigger spatiotemporal changes in forest plant diversity

Julien Beguin, Steeve D. Côté & Mark Vellend
Large herbivores can exert top-down control on terrestrial plant communities, but the magnitude, direction, and scale-dependency of their impacts remain equivocal, especially in temperate and boreal forests, where multiple disturbances often interact. Using a unique, long-term and replicated landscape experiment, we assessed the influence of a high density of white-tailed deer (Odocoileus virginianus) on the spatiotemporal dynamics of diversity, composition, and successional trajectories of understorey plant assemblages in recently logged boreal forests. This experiment provided...

Impacts of indoor mass storage of two densities of honey bee queens (Apis mellifera) during winter on queen survival, reproductive quality and colony performance

Mireille Levesque, Andrée Rousseau & Pierre Giovenazzo
Spring imports of queen honey bees (Apis mellifera L.) are essential to replace winter colony losses in Canada, but contribute to the spread of treatment-resistant strains of pathogens and undesirable genetic traits. A possible alternative to these imports is the mass storage of queens during winter. By overwintering a strong colony (queen bank) containing large numbers of mated queens isolated in cages, beekeepers could acquire local queens early in the spring. In this study, we...

Data from: Glacial cycles as an allopatric speciation pump in North Eastern American freshwater fishes

Julien April, Robert H. Hanner, Anne-Marie Dion-Côté & Louis Bernatchez
Allopatric speciation may be the principal mechanism generating new species. Yet, it remains difficult to judge the generality of this process because few studies have provided evidence that geographic isolation has triggered the development of reproductive isolation over multiple species of a regional fauna. Here, we first combine results from new empirical data sets (7 taxa) and published literature (9 taxa) to show that the eastern Great Lakes drainage represents a multispecies suture zone for...

Data from: Gene coexpression networks reveal key drivers of phenotypic divergence in lake whitefish

Marie Filteau, Scott A. Pavey, Jérôme St-Cyr & Louis Bernatchez
BACKGROUND: A functional understanding of processes involved in adaptive divergence is one of the awaiting opportunities afforded by high throughput transcriptomic technologies. Functional analysis of co-expressed genes has succeeded in the biomedical field in identifying key drivers of disease pathways. However, in ecology and evolutionary biology, functional interpretation of transcriptomic data is still limited. RESULTS: Here we used Weighted Gene Co-Expression Network Analysis (WGCNA) to identify modules of co-expressed genes in muscle and brain tissue...

Data from: Short-term genetic changes: evaluating effective population size estimates in a comprehensively described brown trout (Salmo trutta) population

Dimitar Serbezov, Per Erik Jorde, Louis Bernatchez, Esben Moland Olsen & L. Asbjørn Vøllestad
The effective population size (Ne) is notoriously difficult to accurately estimate in wild populations as it is influenced by a number of parameters that are difficult to delineate in natural systems. The different methods that are used to estimate Ne are impacted variously by different processes at the population level, such as the life-history characteristics of the organism, gene flow, population substructure, as well as by the frequency patterns of genetic markers used and the...

Data from: Plasticity and heritability of morphological variation within and between parapatric stickleback demes

R. J. Scott McCairns & Louis Bernatchez
The threespine stickleback (Gasterosteus aculeatus) has emerged as an important model organism in evolutionary ecology, largely due to the repeated, parallel evolution of divergent morphotypes found in populations having colonized freshwater habitats. However, morphological divergence following colonization is not a universal phenomenon. We explore this in a large-scale estuarine ecosystem inhabited by two parapatric stickleback demes, each physiologically adapted to divergent osmoregulatory environments (fresh vs. saline waters). Using geometric morphometric analyses of wild-caught individuals, we...

Data from: Stocking impacts the expression of candidate genes and physiological condition in introgressed brook charr (Salvelinus fontinalis) populations

Fabien C. Lamaze, Dany Garant & Louis Bernatchez
Translocation of plants and animal populations between environments is one of the major forms of anthropogenic perturbation experienced by pristine populations, and consequently, human mediated hybridization by stocking practices between wild and exogenous conspecifics is of increasing concern. In this study, we compared the expression of seven candidate genes involved in multifactorial traits and regulatory pathways for growth as a function of level of introgressive hybridization between wild and domestic brook charr to test the...

Data from: The availability of research data declines rapidly with article age

Timothy H. Vines, Arianne Y. K. Albert, Rose L. Andrew, Florence Débarre, Dan G. Bock, Michelle T. Franklin, Kimberly J. Gilbert, Jean-Sébastien Moore, Sébastien Renaut & Diana J. Rennison
Policies ensuring that research data are available on public archives are increasingly being implemented at the government, funding agency, and journal level. These policies are predicated on the idea that authors are poor stewards of their data, particularly over the long term, and indeed many studies have found that authors are often unable or unwilling to share their data. However, there are no systematic estimates of how the availability of research data changes with time...

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