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....
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...
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...
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,...
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.
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,...
Raw data of eDNA quantities from an experimental study testing temperature, water masses, and fish speciesIsabeau 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...
Effects of population density on static allometry between horn length and body mass in mountain ungulatesChristophe Pelabon, Marco Festa-Bianchet, Steeve Côté, Carole Toigo, Mathieu Garel & Anne Loison
Little is known about the effects of environmental variation on allometric relationships of condition-dependent traits, especially in wild populations. We estimated sex-specific static allometry between horn length and body mass in four populations of mountain ungulates that experienced periods of contrasting density over the course of the study. These species displayed contrasting sexual dimorphism in horn size; high dimorphism in Capra ibex and Ovis canadensis and low dimorphism in Rupicapra rupicapra and Oreamnos americanus. The...
eDNA metabarcoding as a means to assess distribution of subterranean fish communities: Iranian blind cave fishes as a case studyIraj 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...
Data for the detection of the boreal chorus frog (Pseudacris maculata) using environmental DNA and call surveys at 180 ponds sampled in 2017-2018 in southeastern Québec, CanadaMarc J. Mazerolle, Marie-Pier Dubois-Gagnon, Louis Bernatchez, Marc Bélisle & Yohann Dubois
The boreal chorus frog (Pseudacris maculata) is at risk of extinction in parts of its range in Canada. Our objectives were to quantify the influence of local and landscape characteristics on the occurrence of the species in wetlands in southern Québec. We hypothesized that site occupancy depends on local characteristics and landscape characteristics contributing to site connectivity. We developed an environmental DNA (eDNA) method to detect the species and compared the detection probability of this...
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...
Datasets generated and analyzed within the study area located in the Côte-Nord region of Québec, Canada. "DataFinal_Vegetation.csv" was used to evaluate the availability of deciduous vegetation (column Cover_Deciduous) in stands impacted by the spruce budworm (SBW, severity index values presented in column SBW_SevCum) outbreak and test our prediction that the reduction in canopy cover caused by SBW in coniferous stands would result in greater deciduous vegetation. We determined the percentage cover of deciduous vegetation for...
Bank of Canada9
Université de Sherbrooke5
Université du Québec à Rimouski3
National Research Institute for Agriculture, Food and Environment2
Centre d'Ecologie Fonctionnelle et Evolutive2
University of Alaska Fairbanks2
Grenoble Alpes University2
University of Quebec at Montreal1
Universidade Federal de Goiás1