1. Department of Conservation, Biodiversity Group, Christchurch, New Zealand
2. Department of Conservation, Biodiversity Group, Hamilton, New Zealand
3. School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
4. School of Science, The University of Waikato, Hamilton, New Zealand
5. National Institute of Water and Atmospheric Research, Hamilton, New Zealand
6. School of Agriculture and Environment, Massey University, Palmerston North, New Zealand
7. Department of Conservation, Biodiversity Group, Wellington, New Zealand