Emma Schubert

@emmaschubert.bsky.social

PhD Candidate at McGill University, Montreal studying the ecological impacts of goldfish invasions 🐟

Découvrez les personnes extraordinaires qui se présentent aux postes du comité exécutif de l’AFSébec! Apprenez-en davantage sur leur parcours, leurs expériences et leur passion pour les sciences aquatiques alors que nous nous préparons pour les prochaines élections. 🐟 Élections: 22 juillet 2026

Goldfish generate turbidity (cloudiness) by suspending sediment when they feed. This decreases sunlight penetration in the water and negatively impacts native macrophytes and visual predators. I use a turbidimeter to accurately determine the turbidity in my mesocosms from water samples.

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I use this fluoroprobe to measure the concentrations of green algae, bluegreen algae, diatoms, and cryptophyta in each of my mescosms to see how goldfish impact the algal composition of a shallow pond ecosystem.

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This is my experimental setup at Gault Nature Reserve in Mont-Sainte-Hilaire, QC. Each goldfish is measured before being added to one of the 36 experimental mesocosms. We record different parameters to measure the impacts of goldfish on these artificial ponds, including turbidity and algae growth.

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This is Burbank Pond in Danville, QC, where we collected 106 goldfish for this summer's artificial pond experiment on goldfish impacts. Burbank Pond currently has a large invasive goldfish population 🐟