Catherine Girard

Catherine Girard
Laval University | ULAVAL · Viral Ecology & Discovery Laboratory

PhD

About

22
Publications
5,099
Reads
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389
Citations
Introduction
For more info: http://catherine-girard.com/ I’m a postdoctoral fellow at Université Laval in the Viral Discovery and Ecology Lab, where I’m interested in the diversity of environmental viruses in the Arctic. My work focuses on the North at the intersection of environmental studies and human health, and I endeavour to develop collaborative research projects with Northern communities. I’m passionate about science advocacy, outreach and communication, as well as issues of diversity representation in STEM. Part of the Center for Northern Studies and the Sentinel North research program, board member of Acfas. Find me on Twitter @cath__girard!
Additional affiliations
September 2015 - June 2016
University of Texas at Austin
Position
  • Ph.D. visiting researcher
Description
  • Biotransformations of neonicotinoid insectides by the microbiome of the honey bee.
January 2015 - May 2015
Université de Montréal
Position
  • Teacher's assistant - Environmental Microbiology (BIO2405)
January 2014 - May 2014
Université de Montréal
Position
  • Teacher's assistant - Environmental Microbiology (BIO2405)
Education
September 2011 - September 2017
Université de Montréal
Field of study
  • Biology
September 2008 - May 2011
Université de Montréal
Field of study
  • Biology

Publications

Publications (22)
Article
Fish consumption is a major pathway for mercury exposure in humans. Current guidelines and risk assessments assume that 100% of methylmercury (MeHg) in fish is absorbed by the human body after ingestion. However, a growing body of literature suggests that this absorption rate may be overestimated. We used an in vitro digestion method to measure MeH...
Article
Full-text available
Arctic lakes are experiencing increasingly shorter periods of ice cover due to accelerated warming at northern high latitudes. Given the control of ice cover thickness and duration over many limnological processes, these changes will have pervasive effects. However, due to their remote and extreme locations even first-order data on lake ecology is...
Article
Full-text available
Permafrost thaw lakes including thermokarst lakes and ponds are ubiquitous features of Subarctic and Arctic landscapes and are hotspots of microbial activity. Input of terrestrial organic matter into the planktonic microbial loop of these lakes may greatly amplify global greenhouse gas emissions. This microbial loop, dominated in the summer by aero...
Chapter
Full-text available
Le Québec est mieux équipé que d’autres espaces nationaux parce que ses citoyens ont en partage des repères sociétaux clés ce qui permet à la communauté de construire sur cette cohésion et se projeter en faisant le point sur « un avant » et en imaginant « un après » à la crise sanitaire. Cela se fera en tablant sur quatre processus : le retour de l...
Book
Full-text available
Ces textes représentent un effort collectif d'universitaires et de chercheurs du milieu collégial, principalement au Québec, mais aussi d'autres établissements d'enseignement supérieur au Canada, à penser toutes les répercussions et les conséquences de la pandémie de la COVID-19 sur nos vies, et ce dans toutes les constellations de la vie scientifi...
Article
Full-text available
High-latitude, perennially stratified (meromictic) lakes are likely to be especially vulnerable to climate warming because of the importance of ice in maintaining their water column structure and associated distribution of microbial communities. This study aimed to characterize viral abundance, diversity, and distribution in a meromictic lake of ma...
Article
Full-text available
The phosphonate herbicide glyphosate, which is the active ingredient in the commercial formulation Roundup®, is currently the most globally used herbicide. In aquatic ecosystems, periphytic biofilms, or periphyton, are at the base of food webs and are often the first communities to be in direct contact with runoff. Microcosm experiments were conduc...
Article
Full-text available
Background: The human gut microbiome represents a diverse microbial community that varies across individuals and populations, and is influenced by factors such as host genetics and lifestyle. Diet is a major force shaping the gut microbiome, and the effects of dietary choices on microbiome composition are well documented. However, it remains poorl...
Article
Full-text available
Diet is a major determinant of community composition in the human gut microbiome, and "traditional" diets have been associated with distinct and highly diverse communities, compared to Western diets. However, most traditional diets studied have been those of agrarians and hunter-gatherers consuming fiberrich diets. In contrast, the Inuit of the Can...
Article
Permafrost thaw ponds of the warming Eastern Canadian Arctic are major landscape constituents and often display high levels of methylmercury (MeHg). We examined photodegradation potentials in high-dissolved organic matter (DOC) thaw ponds on Bylot Island (BYL) and a low-DOC oligotrophic lake on Cornwallis Island (Char Lake). In BYL, the ambient MeH...
Article
Permafrost thaw ponds are ubiquitous in the eastern Canadian Arctic, yet little information exists on their potential as sources of methylmercury (MeHg) to freshwaters. They are microbially-active and conducive to methylation of inorganic mercury, and are also affected by Arctic warming. This multi-year study investigates thaw ponds in a discontinu...
Article
Full-text available
The Canadian Arctic has vast freshwater resources, and fish are important in the diet of many Northerners. Mercury is a contaminant of concern because of its potential toxicity and elevated bioaccumulation in some fish populations. Over the last decade, significant advances have been made in characterizing the cycling and fate of mercury in these f...
Article
Full-text available
This review summarizes data and information which have been generated on mercury (Hg) in the marine environment of the Canadian Arctic since the previous Canadian Arctic Contaminants Assessment Report (CACAR) was released in 2003. Much new information has been collected on Hg concentrations in marine water, snow and ice in the Canadian Arctic. The...
Chapter
Full-text available
The Canadian Arctic contains vast freshwater resources that cover about 140,000 km 2 of land north of 60° latitude (Prowse et al. 2009). Freshwater fish are important in the diet of many Northerners, particularly in the Northwest Territories, Yukon, and northern Quebec. Over the last two decades, extensive monitoring of Hg in freshwater fish has be...

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