Normand Bergeron
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View article: Overstating trophic cascade strength following large carnivore restoration in Yellowstone: A comment on Painter et al. (2025)
Overstating trophic cascade strength following large carnivore restoration in Yellowstone: A comment on Painter et al. (2025) Open
Painter et al. (2025) claim that large-carnivore recovery in Yellowstone National Park has produced a strong trophic cascade compared to other systems, citing a 152 fold increase in aspen sapling density and widespread recruitment of new t…
View article: Performance of Hydraulic Models Compared to Geomorphological and Botanical Approaches to Delineate the Ordinary High Water Mark for Small Rivers
Performance of Hydraulic Models Compared to Geomorphological and Botanical Approaches to Delineate the Ordinary High Water Mark for Small Rivers Open
The ordinary high water mark (OHWM) delineates the water environment from the land environment. The preferred method for the OHWM delineation in Québec, Canada, is a method based solely on bank vegetation characteristics, positioning the b…
View article: Assessing the potential for Atlantic salmon (<i>Salmo salar</i>) colonization of Nunavik’s Arctic and subarctic rivers by 2070–2100
Assessing the potential for Atlantic salmon (<i>Salmo salar</i>) colonization of Nunavik’s Arctic and subarctic rivers by 2070–2100 Open
In Nunavik, Québec, Canada, Atlantic salmon ( Salmo salar) populations reach their northern limit in four rivers of southern Ungava Bay. With projected river warming from climate change, this study assesses the potential for Atlantic salmo…
View article: Methodological influence on detecting temperature effects on growth variability in juvenile Atlantic salmon
Methodological influence on detecting temperature effects on growth variability in juvenile Atlantic salmon Open
In the context of warming freshwater habitats, protection of Atlantic salmon populations requires an understanding of the effects of temperature on somatic growth during the juvenile life stage. However, quantifying the effect of temperatu…
View article: Monitoring and predicting the presence and abundance of juvenile Atlantic salmon in tributaries according to habitat characteristics using environmental <scp>DNA</scp>
Monitoring and predicting the presence and abundance of juvenile Atlantic salmon in tributaries according to habitat characteristics using environmental <span>DNA</span> Open
Conservation of the Atlantic salmon Salmo salar requires to monitor the spatial distribution and abundance of juveniles at a local scale in tributaries. However, tributaries are rarely accounted for in monitoring programs despite their imp…
View article: Characterization of anadromous Arctic char winter habitat and egg incubation areas in collaboration with Inuit fishers
Characterization of anadromous Arctic char winter habitat and egg incubation areas in collaboration with Inuit fishers Open
In Nunavik, anadromous Arctic char spend more than 6 months under ice-covered habitats, mainly in lakes. Their winter habitats in this region have been scarcely studied due to the challenging logistics in the Arctic. In this study, we work…
View article: Combining Landsat <scp>TIR</scp>‐imagery data and <scp>ERA5</scp> reanalysis information with different calibration strategies to improve simulations of streamflow and river temperature in the Canadian Subarctic
Combining Landsat <span>TIR</span>‐imagery data and <span>ERA5</span> reanalysis information with different calibration strategies to improve simulations of streamflow and river temperature in the Canadian Subarctic Open
Arctic and Subarctic environments are among the most vulnerable regions to climate change. Increases in liquid precipitation and changes in snowmelt onset are cited as the main drivers of change in streamflow and water temperature patterns…
View article: A potential growth thermal index for estimating juvenile Atlantic salmon (<i>Salmo salar</i>) size‐at‐age across geographical scales
A potential growth thermal index for estimating juvenile Atlantic salmon (<i>Salmo salar</i>) size‐at‐age across geographical scales Open
We present a potential growth thermal index (PGTI) and assess its correlation with juvenile Atlantic salmon Salmo salar fork length data collected near the end of the growth season in a range of latitudinal locations and geographic scales …
View article: Analysis of Large-Scale Groundwater-Driven Cooling Zones in Rivers Using Thermal Infrared Imagery and Radon Measurements
Analysis of Large-Scale Groundwater-Driven Cooling Zones in Rivers Using Thermal Infrared Imagery and Radon Measurements Open
The role of groundwater (GW) discharge on surface water (SW) quantity, quality and temperature is known to be important. Moreover, the effect of GW contributions to river thermal budgets is critical in natural rivers considering that water…
View article: Nunavik anadromous Arctic char life histories, behaviour, and habitat use informed by both Inuit knowledge and western science: a year in Ungava Bay
Nunavik anadromous Arctic char life histories, behaviour, and habitat use informed by both Inuit knowledge and western science: a year in Ungava Bay Open
This study is a comprehensive documentation of anadromous Arctic char ( Salvelinus alpinus) life history in Ungava Bay, Nunavik, Canada, through Inuit knowledge. Inuit experts shared their knowledge during semidirected interviews and other…
View article: Early developmental toxicity of Atlantic salmon exposed to conventional and unconventional oils
Early developmental toxicity of Atlantic salmon exposed to conventional and unconventional oils Open
Atlantic salmon is an important species for Canadian culture and economy and its importance extends beyond Canada to Scandinavia and Western Europe. However, it is a vulnerable species facing decline due to habitat contamination and destru…
View article: Identification of Thermal Refuges and Water Temperature Patterns in Salmonid-Bearing Subarctic Rivers of Northern Quebec
Identification of Thermal Refuges and Water Temperature Patterns in Salmonid-Bearing Subarctic Rivers of Northern Quebec Open
In summer, salmonids can experience thermal stress during extreme weather conditions. This may affect their growth and even threaten their survival. Cool water zones in rivers constitute thermal refuges, allowing fish to be more comfortabl…
View article: A new look at habitat suitability curves through functional data analysis
A new look at habitat suitability curves through functional data analysis Open
View article: Riverscape approaches in practice: perspectives and applications
Riverscape approaches in practice: perspectives and applications Open
Landscape perspectives in riverine ecology have been undertaken increasingly in the last 30 years, leading aquatic ecologists to develop a diverse set of approaches for conceptualizing, mapping and understanding ‘riverscapes’. Spatiotempor…
View article: Comparison of a deterministic and statistical approach for the prediction of thermal indices in regulated and unregulated river reaches: case study of the Fourchue River (Québec, Canada)
Comparison of a deterministic and statistical approach for the prediction of thermal indices in regulated and unregulated river reaches: case study of the Fourchue River (Québec, Canada) Open
Water temperature is an important factor modifying fish distribution patterns and community abundance in streams, and this is especially true for salmonids. Knowing that dams often modify the thermal regime of rivers, understanding these c…
View article: Inclusion of water temperature in a fuzzy logic Atlantic salmon (Salmo salar) parr habitat model
Inclusion of water temperature in a fuzzy logic Atlantic salmon (Salmo salar) parr habitat model Open
View article: Factors influencing fallback by adult Atlantic salmon following transport into a novel river reach
Factors influencing fallback by adult Atlantic salmon following transport into a novel river reach Open
Transport of salmonids allows upstream migrating adults to bypass barriers to migration, for example hydroelectric dams or adverse habitats. Downstream movement (“fallback”) after transport is common and removes individuals from spawning p…
View article: Comparing the behavioural thermoregulation response to heat stress by Atlantic salmon parr (<i>Salmo salar</i>) in two rivers
Comparing the behavioural thermoregulation response to heat stress by Atlantic salmon parr (<i>Salmo salar</i>) in two rivers Open
Climate change is expected to increase the frequency and magnitude of extreme thermal events in rivers. The Little Southwest Miramichi River (LSWM) and the Ouelle River (OR) are two Atlantic salmon ( Salmo salar ) rivers located in eastern…
View article: WATER TEMPERATURE MONITORING IN EASTERN CANADA: A CASE STUDY FOR NETWORK OPTIMIZATION
WATER TEMPERATURE MONITORING IN EASTERN CANADA: A CASE STUDY FOR NETWORK OPTIMIZATION Open
Water temperature is a key variable affecting important water quality parameters such as dissolved oxygen.In Eastern Canada, iconic fish species such as Atlantic salmon (Salmo salar) can be affected by increase in temperature associated wi…
View article: Understanding summertime thermal refuge use by adult Atlantic salmon using remote sensing, river temperature monitoring, and acoustic telemetry
Understanding summertime thermal refuge use by adult Atlantic salmon using remote sensing, river temperature monitoring, and acoustic telemetry Open
Adult Atlantic salmon (Salmo salar) return to natal rivers several months before spawning and during summer can be subjected to temperatures that exceed their upper temperature tolerance limits. Salmon use thermal refuges to minimize expos…
View article: Effect of discharge and habitat type on the occurrence and severity of <scp><i>Didymosphenia geminata</i></scp> mats in the Restigouche River, eastern Canada
Effect of discharge and habitat type on the occurrence and severity of <span><i>Didymosphenia geminata</i></span> mats in the Restigouche River, eastern Canada Open
Since 2006, the Restigouche River watershed, eastern Canada, has been affected by nuisance growths of the mat‐forming diatom, Didymosphenia geminata . In 2010, in view of the potential impacts of this alga on the local Atlantic salmon fish…
View article: Le rôle de la morphologie d’une succession seuil-mouille dans la croissance quotidienne et l’évolution d’un couvert de glace
Le rôle de la morphologie d’une succession seuil-mouille dans la croissance quotidienne et l’évolution d’un couvert de glace Open
Menée sur un tronçon de rivière de taille moyenne, cette recherche analyse quotidiennement les processus de formation et de croissance de la glace dans une rivière graveleuse caractérisée par une succession seuil-mouille. Elle documente ég…
View article: Brook trout passage performance through culverts
Brook trout passage performance through culverts Open
Culverts can restrict access to habitat for stream-dwelling fishes. We used passive integrated transponder telemetry to quantify passage performance of >1000 wild brook trout (Salvelinus fontinalis) attempting to pass 13 culverts in Quebec…
View article: Main stem movement of <scp>A</scp>tlantic salmon parr in response to high river temperature
Main stem movement of <span>A</span>tlantic salmon parr in response to high river temperature Open
Atlantic salmon become thermally stressed when water temperatures exceed 23 ° C . To alleviate this stress, they behaviourally thermoregulate by moving to patches of cold water, often forming large aggregations. These patches are known as …
View article: Spatial distribution of thermal refuges analysed in relation to riverscape hydromorphology using airborne thermal infrared imagery
Spatial distribution of thermal refuges analysed in relation to riverscape hydromorphology using airborne thermal infrared imagery Open