ACKNOWLEDGEMENTS

We thank J. Tahau (Tauhara Trust) and the New Zealand Department of Conservation for granting us site access. Funding support for water chemistry analyses was supplied by the Marsden Fund, Royal Society of New Zealand. Technical assistance was provided by A. Arcila, L. Cotterall, C. Hobbis, B. James, R. Sims, A. Turner, J. Wilmshurst, and B. Wong. Insightful discussions were held with K. Brown, K. Handley, N. Hinman, M. Hochstein, B. Lynne, B. Mountain, B. Ricketts and S. Turner. We also thank two anonymous reviewers for their valued comments.