38 Works

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...

Data from: Interspecific hybrids show a reduced adaptive potential under DNA damaging conditions

Carla Bautista, Souhir Marsit & Christian R. Landry
The data is framed in a context of experimental evolution. Popular Summary: Hybridization between species can be a dead end or a stimulus for adaptation and speciation. This stimulus could be fueled, among other things, by the intrinsic elevated rate of evolution of hybrid genomes. Whether this serves as an advantage for hybrids when faced with extreme stress is largely unknown. Here we tested this by evolving yeast species and their hybrids in UV mimetic...

Immigrants and Mortgage Delinquency in the United States

Zhenguo Lin, Yingchun Liu & Jia Xie
We investigate the relationship between immigrant status and mortgage delinquency in the United States. We find that after controlling for observables, newly arrived immigrants are likely to have a higher delinquency rate on mortgages than natives, while immigrants who have resided in the United States for more than 20 years are no different than natives in this regard. In addition, there is no evidence that the second generation of immigrants has a higher delinquency rate...

Variable strength of predator-mediated effects on species occurrence in an arctic terrestrial vertebrate community

Éliane Duchesne, Jean-François Lamarre, Gilles Gauthier, Dominique Berteaux, Dominique Gravel & Joël Bêty
Indirect effects resulting from species sharing the same enemy can shape spatio-temporal variations in species occurrence. The strength of such effects remains poorly known in natural communities composed of species from different trophic levels interacting in heterogeneous landscapes. Benefiting from a well-known arctic vertebrate community and marked spatio-temporal variations in the density of key prey species, we examined the effects of direct predator-prey and indirect predator-mediated effects on species occurrence in the landscape. We found...

The Role of Bank Capital in the Propagation of Shocks

Cesaire Meh & Kevin Moran
Recent events in financial markets have underlined the importance of analyzing the link between the financial health of banks and real economic activity. This paper contributes to this analysis by constructing a dynamic general equilibrium model in which the balance sheet of banks affects the propagation of shocks. We use the model to conduct quantitative experiments on the economy's response to technology and monetary policy shocks, as well as to disturbances originating within the banking...

A target enrichment probe set for resolving the flagellate land plant tree of life

Jesse W. Breinholt, Sarah B. Carey, George P. Tiley, E. Christine Davis, Lorena Endara, Stuart F. McDaniel, Leandro Neves, Emily B. Sessa, Matt Von Konrat, Susan Fawcett, Stefanie M. Ickert-Bond, Paulo H. Labiak, Juan Larraín, Marcus Lehnert, Lily R. Lewis, Nathalie S. Nagalingum, Nikisha Patel, Stefan A. Rensing, Weston Testo, Alejandra Vasco, Juan Carlos Villarreal, Evelyn Webb Williams, J. Gordon Burleigh, Sahut Chantanaorrapint, Leandro G. Neves … & Stefanie M. Ickert‐Bond
Premise of the Study: New sequencing technologies enable the possibility of generating large-scale molecular datasets for constructing the plant tree of life. We describe a new probe set for target enrichment sequencing to generate nuclear sequence data to build phylogenetic trees with any flagellate land plants, including hornworts, liverworts, mosses, lycophytes, ferns, and all gymnosperms. Methods and Results: We leveraged existing transcriptome and genome sequence data to design a set of 56,989 probes for target...

Pathogen-mediated selection favours the maintenance of innate immunity gene polymorphism in a widespread wild ungulate

Erwan Quéméré, Pauline Hessenauer, Maxime Galan, Marie Fernandez, Joël Merlet, Yannick Chaval, Nicolas Morellet, Hélène Verheyden, Emmanuelle Gilot-Fromont & Nathalie Charbonnel
Toll-like Receptors (TLR) play a central role in recognition and host frontline defence against a wide range of pathogens. A number of recent studies have shown that TLR genes (Tlrs) often exhibit large polymorphism in natural populations. Yet, there is little knowledge on how this polymorphism is maintained and how it influences disease susceptibility in the wild. In previous work, we showed that some Tlrs exhibit similarly high levels of genetic diversity as genes of...

Small‐Sample Tests for Stock Return Predictability with Possibly Non‐Stationary Regressors and GARCH‐Type Effects

Sermin Gungor & Richard Luger
We develop a simulation-based procedure to test for stock return predictability with multiple regressors. The process governing the regressors is left completely free and the test procedure remains valid in small samples even in the presence of non-normalities and GARCH-type effects in the stock returns. The usefulness of the new procedure is demonstrated both in a simulation study and by examining the ability of a group of financial variables to predict excess stock returns. We...

Genes involved in the constitutive production of phenolic compounds in white spruce

Sébastien Gérardi, Justine Laoué, Claire Depardieu, Manuel Lamothe, Claude Bomal, Aïda Azaiez, Marie-Claude Gros-Louis, Jerôme Laroche, Brian Boyle, Almuth Hammerbacher, Nathalie Isabel & Jean Bousquet
Conifer forests worldwide are becoming increasingly vulnerable to the effects of climate change. Although the production of phenolic compounds (PCs) has been shown to be modulated by biotic and abiotic stresses, the genetic basis underlying the variation in their constitutive production level remains poorly documented in conifers. We used QTL mapping and RNA-Seq to explore the complex polygenic network underlying the constitutive production of PCs in a white spruce (Picea glauca) full-sib family for 2...

Dataset for \"Theoretical analysis of backscattering in hollow-core antiresonant fibers\"

Eric Numkam Fokoua, Vincent Michaud-Belleau, Jérôme Genest, Radan Slavik & Francesco Poletti
Dataset for "Theoretical analysis of backscattering in hollow-core antiresonant fibers" in APL Photonics

Terrestrial lichen data for Northwest Territories, Canada

Jennifer Baltzer, Geneviève Degré-Timmons, Nicola Day, Steve Cumming, Merritt Turetsky & Jill Johnstone
Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early successional forests have been shown to support lower quantities of caribou forage lichens, but geographic variation in, and controls on, the rates of lichen recovery have been largely unexplored. In this study, we sampled across a broad region in northwestern Canada to compare lichen biomass accumulation in ecoprovinces, including the Saskatchewan Boreal Shield,...

DNA microarray of long-lived neutrophils versus control

Patrice Poubelle
The concept of plasticity of neutrophils is highlighted by studies showing their ability to transdifferentiate into antigen-presenting cells. In this regard, transdifferentiated neutrophils were found at inflammatory sites of autoimmune arthritis (AIA). Exposure of neutrophils to inflammatory stimuli prolongs their survival, thereby favoring the acquisition of pathophysiologically relevant phenotypes and functions. By using microarrays, qRT-PCR, and ELISAs, we showed that long-lived (LL) neutrophils obtained after 48 h of culture in the presence of GM-CSF, TNF,...

Bank Leverage Regulation and Macroeconomic Dynamics

Ian Christensen, Cesaire Meh & Kevin Moran
This paper assesses the merits of countercyclical bank balance sheet regulation for the stabilization of financial and economic cycles and examines its interaction with monetary policy. The framework used is a dynamic stochastic general equilibrium model with banks and bank capital, in which bank capital solves an asymmetric information problem between banks and their creditors. In this economy, the lending decisions of individual banks affect the riskiness of the whole banking sector, though banks do...

Setting a Structured Food and Feed Laboratory Testing Capacity in the Arab Region

Samuel Godefroy

Testing the Pricing-to-Market Hypothesis: Case of the Transportation Equipment Industry

Lynda Khalaf & Maral Kichian
Pricing-to-market (PTM) theory suggests that monopolistic firms which export adjust their destination-specific markups in reaction to exchange rate shocks. These adjustments limit changes in the price of their exports. Thus, important movements in the bilateral nominal exchange rate between two countries that trade are not necessarily fully reflected in the price of imports. Evidence in favour of PTM has been mostly obtained through hypothesis testing on the OLS, instrumental variable (IV), or single-equation error-correction estimates...

Mesophyll conductance to CO2 in relation to drought in hybrid poplar

Lahcen Benomar
The study examines the physiological response of two hybrid poplar clones to two soil moisture: control (80% field capacity) and drought (40 % field capacity). Four weeks after treatments, we measured the photosynthetic CO2 response curve and estimated mesophyll conductance, Vcmax and Jmax. Amax, gse, gm et Vcmax decreased under drought. The ratio gm to gs increased under drought conditions.

Data from an experimental study to determine the impact of snow hardness on lemming locomotion

Mathilde Poirier, Dominique Fauteux, Gilles Gauthier, Florent Dominé & Jean-François Lamarre
Lemmings are an essential link of the Arctic food web as they are the main prey of many predators inhabiting these regions. These small rodents exhibiting cyclic fluctuation of their population can stay active throughout the winter and must dig a network of tunnels in the snow to reach vegetation on which they are feeding. Therefore, snow hardness where they dig has the potential to affect their effort while digging as well as their performance....

Temporal changes in the potential geographic distribution of Histiotus velatus (Chiroptera, Vespertilionidae), the “decade effect\"

Liriann Chrisley Da Silva, Rafaela Almeida, Pablo Henrique Da Silva, Monik Oprea, Poliana Mendes, Daniel Brito & Thiago Vieira
Also investigate how the potential distribution of this species changes with the addition of new records over the decades (decade effect). Assuming that (1: hypothesis of the effect of the decade) the addition of new occurrence records over time increases the potential size of the species distribution; and (2: Wallacean distance hypothesis) over the years, the new points added are increasingly distant from the research centers. Considering the geographic knowledge gap of Histiotu velatus, our...

Raw data of eDNA quantities from an experimental study testing temperature, water masses, and fish species

Isabeau Caza-Allard, Martin Laporte, Guillaume Côté, Julien April & Louis Bernatchez
Environmental DNA (eDNA) is a very promising approach to facilitate and improve the aquatic species monitoring, which is crucial for their management and conservation. In comparison with the plethora of monitoring studies in the fields, relatively few studies have focused on experimentally investigating the “ecology” of eDNA, in particular pertaining to processes influencing the detection of eDNA. The paucity of knowledge about its ecology hampers the use of eDNA analysis to its full potential. In...

eDNA metabarcoding as a means to assess distribution of subterranean fish communities: Iranian blind cave fishes as a case study

Iraj Hashemzadeh Segherloo, Seyedeh Narjes Tabatabaei, Eisa Abdolahi-Mousavi, Cecilia Hernandez, Eric Normandeau, Martin Laporte, Brian Boyle, Mohsen Amiri, Nabiallah GhaedRahmati, Eric Hallerman & Louis Bernatchez
One of the most important steps in conservation of the subterranean life forms is to decipher their distribution and ecology, which is challenging using traditional approaches. Development of an environmental DNA (eDNA) assay provides an efficient means for discovering and monitoring subterranean life forms. In this study, the distribution of three Iranian blind cave fish species (blind Iran cave barb Garra typhlops, blind Lorestan cave barb Garra lorestanensis, and blind cave loach Eidinemacheilus smithi) was...

Registration Year

  • 2021

Resource Types

  • Dataset
  • Text


  • Université Laval
  • Bank of Canada
  • Université de Sherbrooke
  • Université du Québec à Rimouski
  • National Research Institute for Agriculture, Food and Environment
  • Centre d'Ecologie Fonctionnelle et Evolutive
  • University of Alaska Fairbanks
  • Grenoble Alpes University
  • University of Quebec at Montreal
  • Universidade Federal de Goiás