Naíla Barbosa da Costa

Université de Montréal
Ph.D. candidate

Supervisor: Jesse Shapiro
Gregor Fussmann
Jesse Shapiro
Start: 2016-09-01
Personal page


Eco-evolutionary dynamics of microbial communities in disturbed freshwater ecosystems
I use molecular biology tools to understand how bacterial populations and communities respond to common water contaminants. More specifically, I'm studying the combined impact of the herbicide glyphosate, the insecticide imidacloprid, and fertilizers (N and P), on the ecological and evolutionary dynamics of freshwater bacteria. I'm using amplicon and metagenomic sequencing to assess bacteria response to high doses of these stressors. Understanding the eco-evolutionary effects of extreme environmental perturbations on microbes is crucial in the context of global change since these impacts will directly affect ecosystem functions provided by microorganisms, such as decomposition and nutrient cycling.


pesticides, écologie microbienne / microbial ecology, contaminants, freshwater bacteria


1- Comparing microscopy and DNA metabarcoding techniques for identifying cyanobacteria assemblages across hundreds of lakes
MacKeigan, Paul W., Rebecca E. Garner, Marie-Ève Monchamp, David A. Walsh, Vera E. Onana, Susanne A. Kraemer, Frances R. Pick, Beatrix E. Beisner, Michael D. Agbeti, Naíla Barbosa da Costa, B. Jesse Shapiro, Irene Gregory-Eaves
2022 Harmful Algae

2- A large-scale assessment of lakes reveals a pervasive signal of land use on bacterial communities
Kraemer, S. A., N. Barbosa da Costa, B. J. Shapiro, M. Fradette, Y. Huot, D. A. Walsh
2020 The ISME Journal

3- Resistance, resilience, and functional redundancy of freshwater bacterioplankton communities facing a gradient of agricultural stressors in a mesocosm experiment
Barbosa da Costa, Naíla, Vincent Fugère, Marie‐Pier Hébert, Charles C.Y. Xu, Rowan D.H. Barrett, Beatrix E. Beisner, Graham Bell, Viviane Yargeau, Gregor F. Fussmann, Andrew Gonzalez, B. Jesse Shapiro
2021 Molecular Ecology

4- Widespread agrochemicals differentially affect zooplankton biomass and community structure
Hébert, Marie‐Pier, Vincent Fugère, Beatrix E. Beisner, Naíla Barbosa da Costa, Rowan D. H. Barrett, Graham Bell, B. Jesse Shapiro, Viviane Yargeau, Andrew Gonzalez, Gregor F. Fussmann
2021 Ecological Applications

5- Community rescue in experimental phytoplankton communities facing severe herbicide pollution
Fugère, Vincent, Marie-Pier Hébert, Naíla Barbosa da Costa, Charles C. Y. Xu, Rowan D. H. Barrett, Beatrix E. Beisner, Graham Bell, Gregor F. Fussmann, B. Jesse Shapiro, Viviane Yargeau, Andrew Gonzalez
2020 Nature Ecology & Evolution

6- Scientists Investigate Eutrophication Mystery and find Oligotrophication Instead
Barbosa da Costa, Naila
2018 Limnology and Oceanography Bulletin

7- Cyanobacteria diversity in alkaline saline lakes in the Brazilian Pantanal wetland: a polyphasic approach
Costa, Naíla B., Maria A. Kolman, Alessandra Giani
2016 Journal of Plankton Research

8- A Glyphosate-Based Herbicide Cross-Selects for Antibiotic Resistance Genes in Bacterioplankton Communities
Barbosa da Costa, Naíla, Marie-Pier Hébert, Vincent Fugère, Yves Terrat, Gregor F. Fussmann, Andrew Gonzalez, B. Jesse Shapiro,
2022 mSystems