Normand Bergeron

Institut National de la Recherche Scientifique

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André St‐Hilaire

Université Laval

Stephen J. Dugdale

University of Nottingham

Patrice Carbonneau

Durham University

Francis Bérubé

Institut National de la Recherche Scientifique

André G. Roy

Concordia University

Patricia Johnston

MRC Cognition and Brain Sciences Unit

Claudine Boyer

Institut National de la Recherche Scientifique

Anik Daigle

Cégep Garneau

Taha B. M. J. Ouarda

Institut National de la Recherche Scientifique

Carole‐Anne Gillis

Institut National de la Recherche Scientifique

Cooperative Institutions

Institut National de la Recherche Scientifique

Université Laval

Université de Montréal

Université du Québec à Montréal

Fisheries and Oceans Canada

University of New Brunswick

McGill University

Ministère des Forêts, de la Faune et des Parcs

Environment and Climate Change Canada

Université du Québec à Rimouski

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Summer stream habitat preferences of Nunavik anadromous Arctic char (Salvelinus alpinus) fry and parr

Canadian Journal of Fisheries and Aquatic Sciences (2022)

Véronique Dubos André St‐Hilaire Normand Bergeron

Arctic char (Salvelinus alpinus) is a fish species known to occupy diverse habitats within the Arctic region. However, summer habitat use during the juvenile stage of the anadromous form is largely unknown. The present study aims to characterize fry and parr summer habitat preferences. Surveys were conducted by electrofishing, associated with physical habitat characterization on several rivers of the Ungava Bay, Nunavik, Canada. At the microhabitat and station scales (group of microhabitats), fry showed significant habitat preferences for shallow water and slow velocity. At the mesohabitat scale, fry showed a significant habitat selectivity for riffles. This habitat selectivity implies that habitat models can be built to evaluate the potential of habitat suitability for Arctic char fry. However, no significant habitat selectivity was found for parr. Parr size was nonetheless positively correlated with velocity, which was found to be a limitative factor for juvenile habitat use. This first attempt at modeling juvenile anadromous Arctic char habitat in rivers emphasizes the importance of selecting an appropriate spatial scale and reiterates the fact that parr showed relatively high plasticity in stream habitat selection.

Arctic char

Electrofishing

10.1139/cjfas-2021-0119

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Analysis of Large-Scale Groundwater-Driven Cooling Zones in Rivers Using Thermal Infrared Imagery and Radon Measurements

Water (2023)

Milad Fakhari Jasmin Raymond Richard Martel Jean‐Philippe Drolet Stephen J. Dugdale

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 temperature plays a vital role in fish survival during extreme heat events. The identification of zones with GW input in rivers can, thus, help river management plans. However, detecting these zones at the watershed scale can be a challenge. This work combines thermal infrared (TIR) imagery of rivers and water sampling for radon measurements for better documentation of GW in rivers. The Sainte-Marguerite and Berard Rivers, both located in Quebec, Canada, are known for their abundance of salmonids. Their water temperature profiles were plotted using TIR imagery, and five cooling zones in the Berard River and two for the Sainte-Marguerite River were identified in which notable GW–SW exchange was the suspected cause. Radon concentrations measured within the cooling zones showed clear GW contribution to SW. TIR imagery is an effective and fast way to identify GW seepage at the watershed scale. Radon can be used as a complementary natural tracer of GW in rivers at finer scales. The combination of both methods was shown to be reliable for the identification of GW in rivers. This can help for a better anticipation of GW effects in management plans to deal with extreme heat waves that are predicted to occur more frequently under future climate change scenarios.

Hyporheic Zone

10.3390/w15050873

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Geosalar: Innovative Remote Sensing Methods for Spatially Continuous Mapping of Fluvial Habitat at Riverscape Scale

Normand Bergeron Patrice Carbonneau

10.1002/9781119940791.ch9

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Multi-day anchor ice cycles and bedload transport in a gravel-bed stream

Journal of Hydrology (2014)

Philippe Tremblay Robert Leconte Jay Lacey Normand Bergeron

Hyperconcentrated flow

Bedform

10.1016/j.jhydrol.2014.06.036

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Citations (19)

Hit the road: assisted migration as population enhancement?

Danielle M. Frechette Normand Bergeron Mélanie Dionne

Assisted migration applies human intervention to allow fish to bypass migration barriers through volitional passage (e.g. fishways) or translocation. There is increasing interest in using assisted migration to enhance Atlantic salmon populations, under the hypothesis that colonization of previously inaccessible habitat by reproductive adults will increase available habitat, thereby reducing densitydependent effects on juvenile growth and survival. We are evaluating a translocation program on population productivity of the SainteMarguerite River (Quebec). For three years, returning adults are being captured, transported by truck, and released upstream of a pair of impassable waterfalls. We will examine habitat use by adults following transport and assess spawning habitat choice on juvenile growth and development. We transported 12 adults in 2014 (2F, 10M) and 25 adults in 2015 (12F and 13M), which we tagged with acoustic transmitters. A high percentage of fish strayed downstream over the falls (42% in 2014; and 28% in 2015). Males moved greater distances, whereas females had a greater propensity to stray. Evidence of reproductive activity was obtained from fish telemetry, visual inspection, and electrofishing. Passive acoustic monitoring has proven ideal for tracking fish movements in a remote, gravelbed river. Our study will inform future translocation programs throughout Quebec rivers.

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Estimating shear velocity and roughness length from velocity profiles

Water Resources Research (1992)

Normand Bergeron Athol D. Abrahams

In turbulent boundary layer flows, shear velocity u * , and roughness length z 0 are commonly derived from semilogarithmic flow velocity profiles by fitting a straight line by ordinary least squares regression to the profile and calculating estimates of u * , and z 0 from the slope and intercept of the computed regression equation. However, it is not clear from the literature whether the appropriate regression is of flow velocity u on the logarithm of height above the bed In z or of ln z on u . In order to calculate estimates of u * and z 0 , the true or structural relation between u and In z must be established. Because u is generally observed with much greater error than is In z , the structural relation may be estimated by regressing u on ln z ; regressing ln z on u is incorrect. An analysis of 24 stream channel flow velocity profiles indicates that even in situations where the correlation between u and ln z exceeds 0.9, performing the incorrect regression can result in the considerable overestimation of u * and z 0 .

Shear velocity

10.1029/92wr00897

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Citations (86)

Développement et démonstration de techniques pour la restauration de la qualité du substrat de fraie des salmonidés: Rapport d'étape no.2.

Francis Bérubé Mylène Levasseur Marc-André Pouliot Normand Bergeron

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Flow and particle paths at a natural river confluence with coarse bed material

Geomorphology (1990)

AndréG. Roy Normand Bergeron

Confluence

Particle (ecology)

10.1016/0169-555x(90)90039-s

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Citations (117)

A knowledge-based framework for the support of sensor web deployment using multi-agent geo-simulation

Mehdi Mekni Normand Bergeron Hedi Haddad Bernard Moulin

Sensor Web deployment is by nature a spatial problem since nodes are highly constrained by the geographic characteristics of the environment. Therefore, there is a need for an efficient modelling paradigm to address the issue of SW deployment taking into consideration the constraints of the geographic space and knowledge it provides to support their autonomous decision making capabilities. In this paper we propose a knowledge-based framework to support the simulation of SW deployments in Informed Virtual Geographic Environments (VGE) using multi-agent geosimulation techniques. This framework builds on our previous works on Informed Virtual Geographic Environments, on spatially reasoning agents and on qualitative reasoning about geo-simulation results. The framework is illustrated with a scenario of a sensor web deployment for weather monitoring purposes.

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Le rôle de la végétation sur la morphologie d’un petit cours d’eau

Géographie physique et Quaternaire (2007)

Normand Bergeron André G. Roy

Dans cette étude, on démontre que la forme du chenal le long d'un petit affluent de la rivière au Saumon (Québec) varie en fonction des propriétés des racines des végétaux qui bordent les berges. Le cours d'eau est étroit et profond lorsque les deux berges sont occupées par des graminées, alors qu'il est plus large et moins profond lorsqu'au moins une des deux berges est couverte d'aulnes. Ces variations morphologiques sont en partie expliquées par la forme des berges, qui est elle-même contrôlée par la densité, la taille et le déploiement des racines des plantes qui y poussent.

10.7202/032613ar

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Citations (6)