Naíla Barbosa da Costa
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LEAP experimental ponds in the Gault Nature Reserve (Mont Saint-Hilaire, QC, Canada)
 PhD Research (2016-2022) - UdeM-Canada
​Eco-evolutionary dynamics of microbial communities in disturbed freshwater ecosystems | Supervisors: Jesse Shapiro and Gregor Fussmann

Aquatic microbial communities are constantly exposed to a combination of different stressors, usually brought from agricultural lands within the watershed. In my PhD, I studied the impact of  commonly-used agrochemicals on bacterioplankton. I worked in collaboration with researchers from McGill University in the LEAP  project to gather experimental data​ on how freshwater bacteria respond to environmental disturbances at the community, genetic and populational level. I also collaborated with the Lake Pulse microbiome research team producing sequencing data of bacterioplankton communities in lakes across Canada with different degrees of human impact.

PhD publications/collaborations:

Barbosa da Costa N, Pérez-Carrascal OM, Hébert M-P, Fugère V, Gonzalez A, Fussmann G, Shapiro BJ. Genome-wide selective sweeps rarely explain the ecological success of bacterial populations responding to a novel environmental stress (in prep.)

Kraemer SA, Barbosa da Costa N, Olivia A, Huot Y, Walsh DA. A resistome survey across hundreds of freshwater bacterial communities reveals the impacts of veterinary and human antibiotics use. Frontiers in Microbiology 2022 doi: 10.3389/fmicb.2022.995418

Barbosa da Costa N, Hébert M-P, Fugère V, Terrat Y, Fussmann G, Gonzalez A, Shapiro BJ. A glyphosate-based herbicide cross-selects for antibiotic resistance genes in bacterioplankton communities. mSystems 2022 doi: 10.1128/msystems.01482-21
  • Q&A about the paper
​
MacKeigan PW, Garner RE, Monchamp ME, Walsh DA, Onana VE, Kraemer SA, Pick FR, Beisner BE, Agbeti MD, Barbosa da Costa N, Shapiro J, Gregory-Eaves I. Comparing microscopy and DNA metabarcoding techniques for identifying cyanobacteria assemblages across hundreds of lakes, Harmful Algae. 2022 doi: 10.1016/j.hal.2022.102187

Barbosa da Costa N, Fugère V, Hébert M-P, Xu CCY, Barrett R, Beisner BE, Bell G, Yargeau V, Fussmann G,
Gonzalez A, Shapiro BJ. Resistance, resilience, and functional redundancy of freshwater microbial communities facing multiple agricultural stressors in a mesocosm experiment. Molecular Ecology. 2021. doi: 10.1111/mec.16100
  • ​Press-release on this publication and Hébert et al. 2021​

Hébert M-P, Fugère V, Beisner B, Barbosa da Costa N, Barrett R, Bell G, Shapiro BJ, Yargeau V, Gonzalez A, Fussmann G. Widespread agrochemicals differentially affect zooplankton biomass and community structure. Ecological Applications. 2021. doi: 10.1002/eap.2423

Fugère V, Hébert M, Barbosa da Costa N, Xu CCY, Barrett RDH, Beisner BE, Bell G, Fussmann G, Shapiro BJ, Yargeau V, Gonzalez A. Community rescue in experimental phytoplankton communities facing severe herbicide pollution. Nat Ecol Evol. 2020; 4:578–588. doi: 10.1038/s41559-020-1134-5

Kraemer SA, Barbosa da Costa N, Shapiro BJ, Fradette M, Huot Y, Walsh D. A large-scale assessment of lakes reveals a pervasive signal of land use on bacterial communities. The ISME J. 2020. doi: 10.1038/s41396-020-0733-0
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Urban reservoir in the Pampulha region, in Belo Horizonte, Brazil. Aerial photo by Raffaello di Ponzio (@dronello_)
​​MSc Research (2013-2015) - UFMG-Brazil  
Temporal dynamics of cyanobacteria in a hypertrophic urban reservoir: a morphological and molecular approach
Aiming to understand what drives genetic diversity and seasonal changes in the cyanobacterial community of an important urban tropical reservoir, we collected monthly limnological data and performed molecular analyses based on 16S-23S rRNA ITS variability. A rapid molecular method for monitoring cyanobacterial blooms was implemented..
Supervisor: Alessandra Giani
Available publications:
Master thesis (in Portuguese)
:
Costa, N. B. (2015) Dinâmica temporal das cianobactérias em um reservatório urbano hipereutrófico: uma abordagem morfológica e molecular. Committee members: Alessandra Giani (supervisor), Andrea Maria Amaral Nascimento & Edel F. B. Stancioli. URI: 
http://hdl.handle.net/1843/BUBD-9VZG4A
PictureSaline alkaline lake in the Nhecolândia Pantanal wetland (MS, Brazil, 2013)
​Undergraduate thesis (2012-2013) - UFMG-Brazil
Diversity of Cyanobacteria from alkaline saline lakes in the Brazilian Pantanal wetland 
The saline alkaline lakes from the Brazilian Pantanal are extreme environments where some unique cyanobacteria species promote blooms. We collected limnological data in these lakes and performed molecular and morphological analyses to characterize the cyanobacteria community in different seasons, intending to infer how the environmental changes in the wetland are linked to blooms emergence.
Supervisors: Alessandra Giani, Maria Kolman

Available publications:
Peer-reviewed article: Costa NB, Kolman MA, Giani A. (2016). Cyanobacteria diversity in alkaline saline lakes in the Brazilian Pantanal wetland: a polyphasic approach. Journal of Plankton Research, 38(6): 1389-1403. doi: 10.1093/plankt/fbw066

Undergraduate thesis (in Portuguese): Costa, N. B. (2013) Diversidade de Cyanobacteria em lagoas salinas do pantanal da Nhecolândia (MS, Brasil), avaliada por meio da caracterização morfológica e molecular. Committee members: Alessandra Giani (supervisor), Maria A. Kolman (co-supervisor) & Edel F. B. Stancioli. Link for download
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Volta Grande reservoir (MG, Brazil, 2012). Photo by Valquíria Lima Viana.
Undergraduate internship (2010-2012) - UFMG-Brazil
Developing new methodologies to analyze the space-temporal distribution of cyanobacteria and cyanotoxins in reservoirs and the deleterious effect on fish 
  • Activities:  general limnological and phytoplankton sampling in a hydroelectric reservoir, extraction and quantification of cyanotoxins and chlorophyll.
Supervisor: Alessandra Giani
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Two bloom-forming cyanobacteria, the colonial Microcystis and filamentous Dolichospermum
 Undergraduate research internship (2010-2012)
UFMG-Brazil

Effect of increasing temperatures on growth and toxin production of different cyanobacterial strains
  • Activities: isolation and culture of freshwater cyanobacterial strains, extraction and quantification of cyanotoxins and chlorophyll, growth curves inference, data analysis.
Supervisor: Alessandra Giani
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An endophytic fungus (Xylaria venulosa) isolated from the herbaceous species Baccharis dracunculifolia
Undergraduate research voluntary internship (2009-2010) - UFMG-Brazil
Anti-pathogenic activity of endophytic fungal extracts
  • Activities: isolation and culture of endophytic fungi from Baccharis dracunculifolia, crude extracts preparation, inference of the Minimum Inhibitory Concentration against phytopathogens, data analysis.
 Supervisors: Geraldo W. Fernandes and Yumi Oki
Available publications:
- Oki Y, Nascimento IM, da Costa NB, Maia RA, Takahashi JA, Ferraz V, Correa Junior A, Wilson GW (2021) Effectiveness of Endophytic Fungi from Baccharis dracunculifolia Against Sucking Insect and Fungal Pathogens. In: Rosa LH (eds) Neotropical Endophytic Fungi. Springer, Cham. https://doi.org/10.1007/978-3-030-53506-3_15​
- Text for science popularization published in an online Brazilian journal in 2010: O silêncio dos inocentes , Revisa GEO
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