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Community and Ecosystem Ecology

My research uses community and ecosystem ecology to inform conservation and management of landscapes in the context of global change. I focus on understanding the controls on terrestrial ecosystem structure, function, and response to stress.

Grassland restoration
Current projects include:

 

  • Native forb re-establishment in nutrient-enriched grasslands in southeastern Australia following abandonment of agriculture

  • Abiotic constraints on native grass germination and growth in highly modified soils (honours project)

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Caribou-vegetation interactions

Projects include:

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  • Effects of low-intensity caribou browsing on tundra vegetation structure

  • Caribou browsing impacts to plant tissue chemistry via induction of defensive secondary metabolites

  • Interactions between browsing intensity and soil nutrient availability on plant regrowth following browsing

  • Impacts of warming on caribou forage quality and quantity

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Climate change impacts to tundra vegetation

Projects include:

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  • Impact of experimental warming on above- and below-ground tundra plant biomass, C, N and P concentrations, and C, N, and P pools

  • Experimental warming effects on tundra soil microbial, inorganic, and organic C, N, and P pools throughout the growing season

  • Temperature, moisture, and chemical controls over the decomposition of tundra plant leaf litter

  • Thresholds of increased N availability impacts on tundra plant growth, tissue chemistry, and nutrient pools

  • Relative importance of N and P to tundra plant growth

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