Research

I am an ecosystem ecologist with a keen interest in how carbon and key plant nutrients, such as nitrogen and phosphorus, are stored and exchanged between the atmosphere, vegetation, microbes, and soil horizons, including permafrost. Some of the research questions that I am currently investigating include:

  • What drives leaf litter decomposition on the tundra? Are decay rates affected more by abiotic factors or plant-soil interactions, and how will shrub expansion impact litter decomposition rates?
  • How do the seasonal shifts in soil thermal state affect ecosystem-atmosphere trace-gas exchange and microbial community composition, and does ecosystem productivity determine soil active layer and permafrost biogeochemistry?
  • What are the legacy effects of a changing climate and/or changing plant community on ecosystem carbon storage and -balance, and how might changes in one season affect ecosystem processes during subsequent seasons?
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