• Research
  • People
  • Publications
  • Teaching
  • Contact
  • Climate change and marine microbes
  • Research
  • People
  • Publications
  • Teaching
  • Contact
  • Climate change and marine microbes

THE RESEARCH TEAM

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David Walsh
Principal Investigator
Professor, Biology, Concordia University

E-mail: david.walsh@concordia.ca
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Arthi Ramachandran
PhD student

​Research interests: My research focuses on the metabolic diversity and evolution of methylotrophic bacteria in northern aquatic ecosystems and how they contribute to carbon cycling in freshwater and marine environments in a changing world. I'm also interested in habitat transitions between freshwater and marine environments, and plan to use the OM43/LD28 clade of methylotrophic bacteria as a model organism to study these evolutionary events
E-mail: a_ramac@live.concordia.ca
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Thomas Grevesse
PhD student

Research interests: My research seeks to understand how the composition, function and metabolism of marine microbial communities shape biogeochemical and ecological processes in the Arctic Ocean. I am particularly interested in how these processes are affected by a rapidly changing climate
E-mail: thomas.grevesse@gmail.com
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Vera Onana
PhD student (co-supervised with B. Beisner, UQAM)

Research Interests: My research involves investigating the distribution and biodiversity of microbial communities in lakes using genomic approaches. I am also interested in evaluating the relationship between the functional potential of lake microbial communities and anthropogenic impact. Hopefully, findings from my investigation will help predict how human impact may be disrupting lake health and functionality.
E-mail: vera.onana@mail.concordia.ca
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Rebecca Garner
PhD student (co-supervised with I. Gregory-Eaves, McGill U)

Research Interests: My research explores how human impact has altered Canadian lake microbial communities before and since industrialization by comparing the environmental DNA in shallow (present day) and deep (preindustrial) lake sediments.  Developing these paleogenetic techniques is in contrast with the classical paleolimnological approach, which has relied on plankton subfossil morphologies to reconstruct past lake communities.
E-mail: rebecca.garner@mail.concordia.ca

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Michelle Cheng
PhD student (co-supervised with I. Gregory-Eaves, McGill U)

Research Interests: My research focuses on assessing lake ecosystem changes over the past few centuries. Specifically, I apply both traditional paleolimnological proxies (e.g., subfossil diatoms) and emerging molecular genetics tools (i.e., sedimentary DNA) to reconstruct sockeye salmon population dynamics and shifts in their food-web composition.
E-mail: yuanyu.cheng@mail.mcgill.ca

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Susan McLatchie
MSc student

Research Interests: I’m interested in how the diversity and metabolic capacity of natural microbial communities shift in response to environmental change over time in the Arctic Ocean.
E-mail: mclatchiesusan@gmail.com
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Charlène Lawruk-Desjardins
MSc student (co-supervised with M. Amyot, U de Montréal)

Research Interests: The diversity and genetic composition of aquatic microbial communities living in cold ecosystems fascinates me. I am particularly interested in the effects that anthropogenic stresses can have on bacterial and viral communities, including how these changes can resonate in a larger scale on the ecosystem.
E-mail: charlene.lawruk-desjardins@mail.concordia.ca
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Roksana Sheikholmolouki
Undergraduate thesis student (BIOL490)

Research Interests: As a space enthusiast, I am fascinated with combining space data with artificial intelligence to find the blue print of the future. My research aims to predict the emergence of antibiotic resistance genes in lake bacterial communities using satellite data.
E-mail: roksana.sheikholmolouki@mail.concordia.ca

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Sara Palestini
Undergraduate thesis student (BIOL490)

Research Interests: I am most interested in the adaptation of ocean microbial communities to shifting abiotic factors, as a result of anthropogenic climate change. My research centres on the degradation of volatile organic compounds by bacteria in the Arctic; where -in such a rapidly changing state- this region plays a critical role in our understanding of humanity’s current and future impacts on the health of our oceans.
E-mail: sarapalestini@gmail.com

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June Kim
Undergraduate thesis student (BIOL490)

Research Interests: My research has the goal of characterizing viral communities in lakes. I am interested in studying the auxiliary metabolic genes carried by these freshwater viruses and how the distribution of these genes in different lakes changes in relation to trophic conditions.
E-mail: yeekyung.kim@mail.concordia.ca
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Thibault Maumy
Undergraduate thesis student (BIOL490)

Research Interests: My research aims at exploring fresh water bacterial communities and metabolic diversity using metagenomic data sampled across a variety of lakes in Canada. Acquiring knowledge of that diversity could potentially help predict carbon cycling and organic particle degradation processes which have further implications at higher trophic levels.
E-mail: th.maumy@gmail.com
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Wentworth Brookes
Systems analyst

Research Interests: Wentworth plays the essential role of keeping our high performance computer cluster operational.
E-mail:
wentworth.brookes@concordia.ca

Lab Alumni

Sebastien Granville— BIOL490 student (undergraduate thesis project) Sept 2021-May 2022
Camille Serra de Villeneuve— BIOL490 student (undergraduate thesis project) Sept 2020-May 2021
Maya Chahine— BIOL490 student (undergraduate thesis project) Sept 2020-May 2021
Veronika Storck— Postdoctoral fellow (co-supervised with M. Amyot, U de Montréal)
Susanne Kraemer— Postdoctoral fellow and Research Associate, 2017-2022
Lise Millera Ferriz— MSc, May 2018-Sept 2020 (co-supervised with M. Amyot, U de Montréal)
Joanna Gauthier— PhD, Sep 2014-Aug 2020 (co-supervised with I. Gregory-Eaves, McGill U)
Makayla Harrison— MSc, May 2017-Sept 2019
Stephanie Pacheco— MSc, May 2017-May 2019
David Colatriano— PhD student, May 2013-Sept 2019.
Nayereh Saborimanesh— Postdoctoral fellow,, January 2016-January 2018 (co-supervised with C. Mulligan, Concordia)
Patricia Tran— MSc student, Sept 2016-Sept 2018
Rebecca Garner— BIOL490 student (undergraduate thesis project) Sept 2017-May 2018
Ola Khawasik— MSc student, Sept 2013-April 2016.
Jackie Peters— BIOL490 student (undergraduate thesis project), May 2015-May 2016
Sabrina Shefa— Diploma in Biotechnology & Genomics student, Sept 2014-May 2015
Natali Samus— Diploma in Biotechnology & Genomics student, May 2015-Dec 2015.
Philippe Thibert— BIOL490 student (undergraduate thesis project), Sept 2014-May 2015.
Daniel Sinclair— CHEM419 student (undergraduate thesis project). May 2014-Jan 2015.
Arthi Ramachandran — BIOL490 student, completed thesis in May 2014.
Palig Khatcherian— Diploma in Biotechnology & Genomics student, Sept 2013-May 2014.
Ting Ting Cui— MSc student, September 2011-Sept 2013.
Heba El-Swais— MSc student, September 2011- Sept 2013. 5.     
Travis Dawson— MSc student, May 2011-Dec 2013.
Michael Gasse— MSc student, co-supervised with Emma Despland.
Sharadindu Sinha— Diploma in Biotechnology & Genomics student, Sept 2011-May 2012.
Christine Gaudreau— BIOL490 student, completed thesis in May 2011.
Anna Georges— Research Assistant, Sept 2011 to Sept 2012.

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