A5084988300- Wildlife Ecology and Conservation
- Marine animal studies overview
- Species Distribution and Climate Change
- Avian ecology and behavior
- Rangeland and Wildlife Management
- Climate change and permafrost
- Cryospheric studies and observations
- Genetic and phenotypic traits in livestock
- Indigenous Studies and Ecology
- Ecology and Vegetation Dynamics Studies
- Animal Behavior and Welfare Studies
- Animal Ecology and Behavior Studies
- Viral Infections and Vectors
- Animal Behavior and Reproduction
- Environmental DNA in Biodiversity Studies
- Human-Animal Interaction Studies
- Bacterial biofilms and quorum sensing
- Neuroendocrine regulation and behavior
- Bat Biology and Ecology Studies
- Animal Vocal Communication and Behavior
- Polar Research and Ecology
- Antimicrobial Peptides and Activities
- Vibrio bacteria research studies
- Peatlands and Wetlands Ecology
- Geology and Paleoclimatology Research
Université du Québec à Rimouski
2013-2024
University of Oxford
2024
Center for Northern Studies
2013-2023
Institut National de la Recherche Scientifique
2008
Swarming is a type of social motility allowing the migration highly differentiated bacterial cells. shares many similarities with biofilm communities, which are notable for their high resistance to antimicrobial agents. We investigate here if swarming behaviour could also be associated widespread resistant phenotype. Challenged 13 antibiotics from various classes, swarm cells Pseudomonas aeruginosa, Escherichia coli, Serratia marcescens, Burkholderia thailandensis and Bacillus subtilis...
Arctic wildlife is often presented as being highly at risk in the face of current climate warming. We use long-term (up to 24 years) monitoring records available on Bylot Island Canadian examine temporal trends population attributes several terrestrial vertebrates and primary production. Despite a warming trend (e.g. cumulative annual thawing degree-days increased by 37% snow-melt date advanced 4–7 days over 23-year period), we found little evidence for changes phenology, abundance or...
Ecological “big data” Human activities are rapidly altering the natural world. Nowhere is this more evident, perhaps, than in Arctic, yet region remains one of most remote and difficult to study. Researchers have increasingly relied on animal tracking data these regions understand individual species' responses, but if we want larger-scale change, need integrate our understanding across species. Davidson et al. introduce an open-source archive that currently hosts 15 million location points...
Abstract Rapid range expansion of boreal forest predators onto the tundra may disrupt local ecological processes, notably through competition with ecologically similar species. Red foxes (Vulpes vulpes) have expanded their northwards throughout Canadian Arctic, inducing endemic Arctic (V. lagopus). We studied between and red foxes, a focus on interference competition, winter movements using satellite telemetry den occupancy data from both worked at Bylot Island (Nunavut) Herschel (northern...
Animal movement is a fundamental process shaping ecosystems at multiple levels, from the fate of individuals to global patterns biodiversity. The spatio‐temporal dynamic food resources major driver animal and generates ranging range residency migration nomadism. Arctic tundra predators face strongly fluctuating environment marked by cyclic microtine populations, high seasonality, potential availability sea ice, which gives access marine in winter. This type relatively poor highly variable...
The scale at which animals perceive their environment is a strong fitness determinant, yet few empirical estimates of animal detection ranges exist, especially in mammalian predators. Using daily Argos satellite tracking 26 adult arctic foxes (Vulpes lagopus) during single winter the High Canadian Arctic, we investigated range by detecting hotspots fox activity on sea ice. While maintaining territories tundra, these solitary foragers occasionally used ice where they sometimes formed...
Long-distance dispersal plays a key role in species distribution and persistence. However, its movement metrics ecological implications may differ whether it is undertaken by juveniles (natal dispersal) or adults (breeding dispersal). We investigated the influence of life stage on long-distance Arctic fox, an important tundra predator. fitted 170 individuals with satellite collars during 13-year study Bylot Island (Nunavut, Canada), analysed tracks 10 27 engaging across Canadian High Arctic....
The sociality of the Arctic fox has been extensively studied during breeding season, so that its summer territorial and generally monogamous social systems are now well described. A key knowledge gap remains, however, winter when logistic challenges preclude detailed observation individuals. We have socio-spatial dynamics pairs to determine: (1) fidelity pair mates their home range; (2) degree which extraterritorial movements simultaneous between mates; (3) spatial proximity they perform...
Abstract Boldness is an important trait in wild populations, and among-individual differences can link to individual fitness. The strength direction of relationships between behavioral life-history traits may however vary according environmental conditions, where fluctuating selection acting on contributes the maintenance personality differences. We explored sources variation Arctic fox ( Vulpes lagopus ) boldness investigated how temporal abundance a main prey (lemmings) influences...
Unlike most canids, versatile and capable of navigating vast landscapes, endangered Ethiopian wolves ( Canis simensis ) are endemic to an archipelago Afroalpine islands. As a habitat specialist, the wolf is ill‐equipped move across highly transformed densely populated agriculture matrix. Hard borders imposed by expanding subsistence lock into further isolation, with few opportunities for dispersal recolonisation. We report evaluate empirical information from long‐term monitoring species'...
Up to 87% of flowering plant species depend on a wide range animal for their pollination (Ollerton et al., 2011). Among mammals, nectivorous pollinator are principally represented by flying such as bats and, smaller extent, some marsupials, rodents, primates, and small carnivores (Carthew & Goldingay, 1997; Regan 2015). It has been pointed out that therophily, non-flying may however be more widespread hold significance than currently recognized Goldingay 1991). For example, in Australia,...
The use of remote sensing for developing land cover maps in the Arctic has grown considerably last two decades, especially monitoring effects climate change. main challenge is to link information extracted from satellite imagery ground covers due fine-scale spatial heterogeneity ecosystems. There currently no commonly accepted methodological scheme high-latitude mapping, but ecosystem mapping would benefit a coordinated sharing lessons learned and best practices. Here, we aimed produce...
Long-term monitoring is critical to guide conservation strategies and assess the impacts of climatic changes anthropogenic activities. In High Arctic ecosystems, information on distribution population trends plants dramatically lacking. During two field expeditions in 2018 2019, we conducted a systematic floristic survey together with opportunistic collecting polar desert surrounding Alert (Nunavut, Canada) update past vascular plant inventories. We recorded 58 species, which 54 species were...
Data (Berteaux, 2021) are available in the MoveBank Repository: https://doi.org/10.5441/001/1.d5d912c4. Appendix S1 Video Legend Please note: The publisher is not responsible for content or functionality of any supporting information supplied by authors. Any queries (other than missing content) should be directed to corresponding author article.
The arctic fox (Vulpes lagopus) is a circumpolar species inhabiting all accessible Arctic tundra habitats. forms panmictic population over areas connected by sea ice, but recently, kin clustering and differentiation were detected even in regions where ice was present. purpose of this study to examine the genetic structure High using robust panel highly polymorphic microsatellites. We analyzed genotypes 210 individuals from Bylot Island, Nunavut, Canada, 15 microsatellite loci. No pattern...
SUMMARY Camera traps now represent a reliable, efficient and cost-effective technique to monitor wildlife collect biological data in the field. However, efficiently extracting information from massive amount of images generated is often extremely time-consuming may most rate-limiting step camera trap studies. To help overcome this challenge, we developed FoxMask, new tool performing automatic detection animal presence short sequences images. FoxMask uses background estimation foreground...
Abstract Animal migration contributes largely to the seasonal dynamics of High Arctic ecosystems, linking distant habitats and impacting ecosystem structure function. In polar deserts, hares are abundant herbivores important components food webs. Their annual migrations have long been suspected, but never confirmed. We tracked 25 individuals with Argos satellite telemetry investigate existence in a population living at Alert (Ellesmere Island, Nunavut, Canada). During fall, 21 undertook...
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Abstract Caribou and reindeer migrations are the tip of iceberg when one considers migration among 70 species Arctic terrestrial mammals. About 26% indeed have migratory individuals, while 33% non-migratory 41% data deficient. Such figures demonstrate need to both better document understand seasonal movements in these vertebrates. Whereas spatiotemporal variations resources key drivers mammal migrations, changes water phase around 0°C, from liquid solid vice versa, considerable impacts given...
Abstract Habitat selection theory suggests that environmental features selected at coarse scales reveal fundamental factors affecting animal fitness. When these vary across seasons, they may lead to large-scale movements, including long-distance seasonal migrations. We analyzed the habitat of 25 satellite-tracked Arctic hares from a population on Ellesmere Island (Nunavut, Canada) relocated over 100 km in fall. Since no other lagomorph is known perform such extensive this offered an ideal...
ABSTRACT The black‐footed cat, a small felid endemic to southern Africa, is particularly vulnerable killing by larger carnivores while also being prone developing renal diseases. Here, we investigated the effect of predator control on cat populations comparing adult annual survival between two sites, nature reserve with little management and sheep game farm where jackals caracals were lethally controlled. Although relatively low, rates similar for both suggesting that intraguild did not have...