Sian Kou-Giesbrecht
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Our research explores carbon and nutrient cycling through Canadian ecosystems and how they are impacted by global change in the field then integrates this knowledge into terrestrial biosphere and Earth system models with the goal of improving climate change projections informing climate policy and decision-making from local to global scales.
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​Please click on the topics above to learn more about who we are and what we do!

News


September 2025: The TBM-CaN research group will be moving to the Simon Fraser University Faculty of Environment's School of Resource and Environmental Management!
July 2026: New study out on how human activity redistributes nitrogen fixation across the terrestrial biosphere:
Global terrestrial nitrogen fixation and its modification by agriculture
​May 2025: New study out on how forest growth shapes future land use and land cover change:
​Role of Forest Carbon Change in Shaping Future Land Use and Land Cover Change
April 2025: Allie and Paige finished their honours undergraduate projects!
March 2025: New study out on terrestrial N cycling feedbacks in Earth system models!
​Rising nitrogen deposition leads to only a minor increase in CO2 uptake in Earth system models
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October 2024: Two new studies out on wildfire and its impacts due to climate change:
Attributing human mortality from fire PM2.5 to climate change
Global burned area increasingly explained by climate change
  • Media coverage: Thousands of annual deaths are linked to wildfire smoke inhalation: new research, The Canadian Press
  • Media coverage: CBC Radio One Halifax
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September 2024: Renée started her PhD and Lauren started her MSc.
​Allie and Paige started honours undergraduate projects.
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July 2024: New study on global net climate effects of anthropogenic reactive nitrogen:
Global net climate effects of anthropogenic reactive nitrogen


​July 2024: New study on greening of the Arctic and Amazonian dieback in terrestrial biosphere models:
The impacts of modelling prescribed vs. dynamic land cover in a high-CO2 future scenario – greening of the Arctic and Amazonian dieback
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June 2024: New Global Nitrous Oxide Budget!
  • Media coverage: Food has a climate problem: Nitrous oxide emissions are accelerating with growing demand for fertilizer and meat – but there are solutions, The Conversation
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April 2024: Invited review on perturbations to the nitrogen cycle and climate change:
​Anthropogenic-driven perturbations on nitrogen cycles and interactions with climate changes
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August 2023: Invited review on phosphorus cycling under climate change:
​Terrestrial Phosphorus Cycling: Responses to Climatic Change
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August 2023: An evaluation of nitrogen cycling across the Global Carbon Budget models:
​Evaluating nitrogen cycling in terrestrial biosphere models: a disconnect between the carbon and nitrogen cycles
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April 2023: A comparison of terrestrial biosphere models with and without nitrogen cycling in the Shared Socioeconomic Pathways:
Compensatory Effects Between CO2, Nitrogen Deposition, and Nitrogen Fertilization in Terrestrial Biosphere Models Without Nitrogen Compromise Projections of the Future Terrestrial Carbon Sink
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June 2022: A new representation of biological nitrogen fixation in CLASSIC:
Representing the Dynamic Response of Vegetation to Nitrogen Limitation via Biological Nitrogen Fixation in the CLASSIC Land Model

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