Long-term trends in non-forest ecosystems including tussock grasslands, shrublands and alpine communities;
The population demography of the rare endemic alpine species Myosotis oreophila;
Patterns and processes in epiphyte communities;
Patterns and processes in wetland ecosystems;
Species diversity and community ecology in low to high alpine environments;
Plant-invertebrate relationships:- community ecology and diversity with implications for biological conservation.